WO2013190442A1 - Systèmes radio à onde millimétrique compacts et procédés associés - Google Patents

Systèmes radio à onde millimétrique compacts et procédés associés Download PDF

Info

Publication number
WO2013190442A1
WO2013190442A1 PCT/IB2013/054924 IB2013054924W WO2013190442A1 WO 2013190442 A1 WO2013190442 A1 WO 2013190442A1 IB 2013054924 W IB2013054924 W IB 2013054924W WO 2013190442 A1 WO2013190442 A1 WO 2013190442A1
Authority
WO
WIPO (PCT)
Prior art keywords
waveguide
millimeter
electrically conductive
region
waves
Prior art date
Application number
PCT/IB2013/054924
Other languages
English (en)
Inventor
Yigal Leiba
Original Assignee
Siklu Communication ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siklu Communication ltd. filed Critical Siklu Communication ltd.
Publication of WO2013190442A1 publication Critical patent/WO2013190442A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/18—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces
    • H01Q19/19—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P3/00—Waveguides; Transmission lines of the waveguide type
    • H01P3/12—Hollow waveguides
    • H01P3/121—Hollow waveguides integrated in a substrate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
    • H01P5/10—Coupling devices of the waveguide type for linking dissimilar lines or devices for coupling balanced lines or devices with unbalanced lines or devices
    • H01P5/107—Hollow-waveguide/strip-line transitions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/10—Bump connectors; Manufacturing methods related thereto
    • H01L2224/15—Structure, shape, material or disposition of the bump connectors after the connecting process
    • H01L2224/16—Structure, shape, material or disposition of the bump connectors after the connecting process of an individual bump connector
    • H01L2224/161—Disposition
    • H01L2224/16151—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
    • H01L2224/16221—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
    • H01L2224/16225—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805—Shape
    • H01L2224/4809—Loop shape
    • H01L2224/48091—Arched
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
    • H01L2224/732—Location after the connecting process
    • H01L2224/73251—Location after the connecting process on different surfaces
    • H01L2224/73265—Layer and wire connectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/02—Coupling devices of the waveguide type with invariable factor of coupling
    • H01P5/022—Transitions between lines of the same kind and shape, but with different dimensions
    • H01P5/028—Transitions between lines of the same kind and shape, but with different dimensions between strip lines

Definitions

  • Some of the disclosed embodiments relate to millimeter-wave systems, and more specifically to systems for interfacing antennas with radio receivers.
  • Millimeter-wave communication systems typically include several components, such as a box housing electrical components, antenna, and waveguides or antenna feeds transporting millimeter- waves from inside the box to the antenna and vice- versa. These components need to be mechanically interconnected into a stable structure, while maintaining high mechanical accuracy in critical connection points such as interfaces between one waveguide to another, or between a millimeter-wave probe and a waveguide.
  • Using reflector antennas, comprising reflectors and feeds often makes it even harder to achieve both mechanical integrity and assembly accuracy with the same design.
  • One embodiment is a millimeter-wave radio system.
  • an antenna body made from a single mechanical part, the antenna body comprising a reflector region and a waveguide region.
  • a radio receiver mounted on a substrate, wherein the substrate is mechanically fixed to the waveguide region such that the substrate is mechanically held by the waveguide region.
  • the system in this form is operative to first, reflect millimeter- waves from the reflector region toward an aperture of the waveguide region, then second, to guide the millimeter-waves through the waveguide region, and then third, to feed the radio receiver with the millimeter- waves.
  • One embodiment is a millimeter-wave radio system.
  • an antenna body made from a single mechanical part, the antenna body comprising a reflector region and a waveguide region, in which the waveguide region has first and second apertures.
  • a radio receiver mounted on a substrate, wherein the substrate is mechanically fixed to the antenna body, such that the substrate is mechanically held by the antenna body, and the radio receiver is placed directly behind the first aperture.
  • the system in this form is operative to first, reflect millimeter-waves from the reflector region toward the second aperture, then second, to guide the millimeter-waves through the waveguide region, and then third to feed the radio receiver with the millimeter-waves exiting the second aperture.
  • One embodiment is a millimeter-wave radio system.
  • a part of a box made from a single mechanical part, the part of the box comprising a reflector region and a waveguide region.
  • a radio receiver mounted on a substrate, wherein the substrate is mechanically and thermally coupled to the waveguide region.
  • the part of the box in this form is operative to guide millimeter-waves from the reflector region to the waveguide region and from the waveguide region to the radio receiver, and also to remove heat from at least the radio receiver.
  • One embodiment is a method for focusing and guiding millimeter- waves.
  • a millimeter-wave radio system reflects millimeter-waves from the reflector region of an antenna body toward an aperture of a waveguide region of said antenna body.
  • the system then guides the millimeter-waves through the waveguide region.
  • the system then feeds a radio receiver, mounted on the waveguide region with the millimeter- waves.
  • One embodiment is a method for removing heat from a millimeter-wave radio system.
  • a millimeter-wave radio system generates heat by a radio receiver module thermally coupled to a waveguide region of an antenna body.
  • the system then conducts the heat, by the waveguide region to a reflector region of said antenna body.
  • the system then radiates the heat from the reflector region to surrounding air.
  • FIG. 1A illustrates one embodiment of a laminate waveguide structure
  • FIG. IB illustrates a lateral cross-section of a laminate waveguide structure
  • FIG. 2A illustrates one embodiment of a laminate waveguide structure
  • FIG. 2B illustrates a lateral cross-section of a laminate waveguide structure
  • FIG. 3A illustrates a lateral cross-section of a probe printed on a lamina and a laminate waveguide structure
  • FIG. 3B illustrates some electrically conductive elements of a probe printed on a lamina and some electrically conductive elements of a laminate waveguide structure
  • FIG. 3C illustrates a top view of a transmission line signal trace reaching a probe, and a ground trace or a ground layer;
  • FIG. 3D illustrates a top view of a coplanar waveguide transmission Line reaching a probe
  • FIG. 3E illustrates a lateral cross-section of a probe and a laminate waveguide structure comprising one lamina
  • FIG. 4A illustrates a lateral cross-section of a probe printed on a lamina and a laminate waveguide structure
  • FIG. 4B illustrates some electrically conductive elements of a probe printed on a lamina and some electrically conductive elements of a laminate waveguide structure
  • FIG. 5 illustrates a cross-section of a laminate waveguide structure and two probes
  • FIG. 6A illustrates a discrete waveguide
  • FIG. 6B illustrates a lateral cross-section of a probe, a laminate waveguide structure , and a discrete waveguide
  • FIG. 7A illustrates one embodiment of a probe and a laminate waveguide structure
  • FIG. 7B illustrates a cross-section of a laminate waveguide structure and a probe
  • FIG. 7C illustrates a cross-section of a laminate waveguide structure comprising one lamina, and a probe
  • FIG. 8 illustrates one embodiment of a laminate waveguide structure
  • FIG. 9A illustrates one embodiment of a probe and a laminate waveguide structure
  • FIG. 9B illustrates a lateral cross-section of a waveguide laminate structure
  • FIG. 10A illustrates a lateral cross-section of a laminate waveguide structure, and an Integrated Circuit comprising antenna
  • FIG. 10B illustrates a lateral cross-section of a laminate waveguide structure, and an Integrated Circuit comprising antenna
  • FIG. 11A illustrates some electrically conductive elements of a discrete waveguide, a probe, a backshort, and a plurality of Vertical Interconnect Access holes forming an electrically conductive cage
  • FIG. 11B illustrates a discrete waveguide
  • FIG. l lC illustrates a lateral cross-sections of a discrete waveguide, a probe, a backshort, and a plurality of Vertical Interconnect Access holes forming an electrically conductive cage;
  • FIG. 12A illustrates some electrically conductive elements of a laminate waveguide structure, a probe, a backshort, and a plurality of Vertical Interconnect Access holes forming an electrically conductive cage
  • FIG. 12B illustrates a lateral cross-sections of a laminate waveguide structure, a probe, a backshort, and a plurality of Vertical Interconnect Access holes forming an electrically conductive cage
  • FIG. 13 illustrates a lateral cross-section of a backshort, a laminate waveguide structure, and a millimeter- wave transmitter device comprising an integrated radiating element
  • FIG. 14 illustrates a lateral cross-section of a backshort, a discrete waveguide, and a millimeter- wave transmitter device comprising an integrated radiating element
  • FIG. 15 illustrates one embodiment of a laminate waveguide structure, two probes, and two backshorts
  • FIG. 16 illustrates one embodiment of a laminate waveguide structure, two probes, and two backshorts
  • FIG. 17A illustrates a lateral cross-section of a Printed Circuit Board (PCB), a bare-die Integrated Circuit, a bonding wire, and an electrically conductive pad;
  • PCB Printed Circuit Board
  • FIG. 17B illustrates a lateral cross-section of a PCB, a heightened bare-die Integrated Circuit, a bonding wire, and a printed pad;
  • FIG. 17C illustrates one embodiment of a PCB, a bare-die Integrated Circuit, three bonding wire, and three printed pads;
  • FIG. 17D illustrates one embodiment of a bare-die Integrated Circuit, three bonding wires, and three electrically conductive pads;
  • FIG. 18A illustrates a lateral cross-section of a PCB, a bare-die Integrated Circuit, a bonding wire, an electrically conductive pad, and a sealing layer;
  • FIG. 18B illustrates a lateral cross-section of a PCB, a bare-die Integrated Circuit, a bonding wire, a an electrically conductive pad, a sealing layer, and Vertical Interconnect
  • FIG. 19A illustrates one embodiments of a bare die Integrated Circuit, three bonding wires, three electrically conductive pads, and a Microstrip transmission line;
  • FIG. 19B illustrates one embodiments of a bare die Integrated Circuit, three bonding wires, three electrically conductive pads, and a coplanar transmission line;
  • FIG. 19C illustrates one embodiments of a bare die Integrated Circuit, two bonding wires, two electrically conductive pads extended into a coplanar or a slot-line transmission line, and a probe
  • FIG. 20 illustrates a lateral cross-section of a laminate structure, a bare-die Integrated Circuit, bonding wire, electrically conductive pad, a transmission line signal trace, a probe, a sealing layer, a backshort, Vertical Interconnect Access holes forming an electrically conductive cage, and a laminate waveguide structure;
  • FIG. 21 illustrates a lateral cross-section of a laminate structure, a flip chip, electrically conductive pad, a transmission line signal trace, a probe, a sealing layer, a backshort, Vertical Interconnect Access holes forming an electrically conductive cage, and a laminate waveguide structure;
  • FIG. 22 illustrates a lateral cross-section of a laminate structure, a bare-die Integrated Circuit, electrically conductive pad, a transmission line signal trace, a probe, a sealing layer, a backshort, Vertical Interconnect Access holes forming an electrically conductive cage, and a discrete waveguide;
  • FIG. 23 illustrates a lateral cross-section of a laminate structure, a bare-die Integrated Circuit, electrically conductive pad, a probe, a sealing layer, a backshort, Vertical Interconnect Access holes forming an electrically conductive cage, and a discrete waveguide;
  • FIG. 24A illustrates a top view of a bare-die Integrated Circuit, three bonding wires, three electrically conductive pads, and transmission line signal trace.
  • FIG. 24B illustrates one embodiment of using a Smith chart
  • FIG. 25 illustrates a top view of a bare-die Integrated Circuit, three bonding wires, three electrically conductive pads, and transmission line signal trace comprising a capacitive thickening;
  • FIG. 26 illustrates a top view of a bare-die Integrated Circuit, two bonding wires, two electrically conductive pads, one slot-line transmission line, one balanced-to-unbalanced signal converter, and a transmission line;
  • FIG. 27A illustrates one embodiment of a laminate waveguide structure
  • FIG. 27B illustrates a lateral cross-section of a laminate waveguide structure, and additional larninas comprising a probe and electrically conductive pads, before being pressed together into a PCB
  • FIG. 27C illustrates a lateral cross-section of a laminate waveguide structure, and additional larninas comprising a probe and electrically conductive pads, after being pressed together into a PCB;
  • FIG. 27D illustrates one embodiment of a laminate waveguide structure, and additional larninas comprising a probe and electrically conductive pads, after being pressed together into a PCB;
  • FIG. 27E illustrates a lateral cross-section of a laminate waveguide structure, additional larninas comprising a probe, electrically conductive pads, and a cavity formed by drilling a hole in the additional larninas;
  • FIG. 27F illustrates one embodiment of a laminate waveguide structure, additional larninas comprising a probe, electrically conductive pads, and a cavity formed by drilling a hole in the additional larninas;
  • FIG. 27G illustrates one embodiment of a bare-die Integrated Circuit, three boning wires, three electrically conductive pads, and a transmission line signal trace;
  • FIG. 27H illustrates one embodiment of a laminate structure, a bare-die Integrated Circuit, two boning wires, two electrically conductive pads, extending into a slot-line transmission line, and a printed probe;
  • FIG. 28A illustrates a flow diagram describing one method for constructing a PCB comprising a laminate waveguide structure and a probe
  • FIG. 28B illustrates a flow diagram describing one method for constructing a PCB comprising a laminate waveguide structure, a probe, and a bare-die Integrated Circuit
  • FIG. 28C illustrates a flow diagram describing one method for interfacing between a bare-die Integrated Circuit and a PCB
  • FIG. 29A illustrates one embodiment of a filter waveguide
  • FIG. 29B illustrates one embodiment of an extruded waveguide
  • FIG. 29C illustrates one embodiment of an extruded waveguide placed in series with a filter waveguide
  • FIG. 30A illustrates one embodiments of a reflector having a focal point located after a second aperture of the extruded waveguide
  • FIG. 30B illustrates one embodiments of a reflector having a focal point located after a second aperture of the extruded waveguide
  • FIG. 30C illustrates one embodiments of a reflector having a focal point located after a second aperture of the extruded waveguide
  • FIG. 30D illustrates a flow diagram describing one method for accurately guiding millimeter- waves .
  • FIG. 31 illustrates one embodiment of a millimeter- wave communication system including a first PCB mechanically fixed to a feed and a second PCB mechanically fixed to a box;
  • FIG. 32 illustrates one embodiment of a millimeter-wave communication system including a PCB mechanically fixed to a feed;
  • FIG. 33 illustrates one embodiment of a millimeter- wave communication system including a first PCB mechanically fixed to a feed doubling as a box;
  • FIG. 34 illustrates one embodiment of a millimeter-wave communication system including a first PCB mechanically fixed to a feed not mechanically fixed to a reflector;
  • FIG. 35A illustrates one embodiment of components of a millimeter-wave radio system
  • FIG. 35B illustrates one embodiment of the same components as in FIG. 35 A, but FIG.
  • FIG. 35A presented a front view whereas FIG. 35B presents a back view
  • FIG. 35C illustrates one embodiment of the components of a millimeter-wave radio system, with a back view
  • FIG. 36A illustrates one embodiment of components of a millimeter-wave radio system, with a cross-section looking down
  • FIG. 36B illustrates one embodiment of components of a millimeter-wave radio system, with a cross-section looking down
  • FIG. 36C illustrates one embodiment of components of a millimeter-wave radio system, with a cross-section looking down, in which there is also presented a coupling surface
  • FIG. 36D illustrates one embodiment of components of a millimeter-wave radio system, with a cross-section looking down, in which a possible ray path of a millimeter wave is depicted;
  • FIG. 37A illustrates one embodiment of components of a millimeter-wave radio system, with a cross-section looking sideway, depicting a different kind of shape for an antenna body
  • FIG. 37B illustrates one embodiment of the components of a millimeter-wave radio system as illustrated in FIG. 37A, with the additional illustration of a ray path for a millimeter wave;
  • FIG. 38 illustrates one embodiment of a millimeter-wave radio system, with a cross- section looking down, in which a possible ray path of a millimeter wave is depicted;
  • FIG. 39 illustrates one embodiment of the elements of a method for focusing and guiding millimeter- waves toward and through a waveguide region.
  • FIG. 40 illustrates one embodiment of the elements of a method for removing heat from a millimeter- wave radio system.
  • FIG. 1A and FIG. IB illustrate one embodiment of a laminate waveguide structure configured to guide millimeter-waves through larninas.
  • FIG. IB is a lateral cross-section of a laminate waveguide structure illustrated by FIG. 1A.
  • Typically such structure shall include at least two larninas.
  • Fig. IB three larninas 110, 111, 112 belonging to a laminate waveguide structure are illustrated by way of example.
  • a cavity 131 is formed perpendicularly through the larninas.
  • An electrically conductive plating 121 is applied on the insulating walls of cavity 131.
  • the electrically conductive plating 121 may be applied using PCB manufacturing techniques, or any other techniques used to deposit or coat an electrically conductive material on inner surfaces of cavities made in larninas.
  • the cavity 131 is operative to guide millimeter- waves 140 injected at one side of the cavity to the other side of the cavity.
  • the larninas 110, 111, and 112 belong to a Printed Circuit Board (PCB).
  • FIG. 2A and FIG. 2B illustrate one embodiment of a laminate waveguide structure configured to guide millimeter-waves through the larninas of the structure.
  • FIG. 2B is a lateral cross-section of a laminate waveguide structure illustrated by FIG. 2A.
  • Electrically conductive surfaces 126 are printed on at least two larninas illustrated as three larninas 110k, 11 lk, 112k by way of example.
  • the electrically conductive surfaces 126 extend outwards from an electrically conductive plating 126b applied on an inner surface of a cavity 141 formed perpendicularly through the larninas of the laminate waveguide structure.
  • the electrically conductive surfaces 126 are electrically connected to the electrically conductive plating 126b.
  • the electrically conductive surfaces 126 may be printed on the larninas using any appropriate technique used in conjunction with PCB technology.
  • Vertical Interconnect Access (VIA) holes 129 go through the larninas 110k, 111k, 112k and the electrically conductive surfaces 126.
  • the VIA holes 129 may be plated or filled with electrically conductive material connected to the electrically conductive surfaces 126, and are located around the cavity 141 forming an electrically conductive cage.
  • the electrically conductive cage is operative to enhance the conductivity of the electrically conductive plating 126b.
  • the cavity 141 is operative to guide millimeter- waves injected at one side of the cavity to the other side of the cavity.
  • the cavity 141 is dimensioned to form a waveguide having a cutoff frequency above 20GHz. In one embodiment, the cavity 141 is dimensioned to form a waveguide having a cutoff frequency above 50GHz. In one embodiment, the cavity 141 is dimensioned to form a waveguide having a cutoff frequency above 57GHz.
  • a system for injecting and guiding millimeter- waves through a Printed Circuit Board includes at least two larninas belonging to a PCB.
  • An electrically conductive plating is applied on the insulating walls of a cavity formed perpendicularly through the at least two larninas.
  • a probe is located above the cavity printed on a lamina belonging to the PCB.
  • the cavity guides millimeter- waves injected by the probe at one side of the cavity to the other side of the cavity.
  • electrically conductive surfaces are printed on the at least two larninas, the electrically conductive surfaces extend outwards from the cavity, and are electrically connected to the electrically conductive plating.
  • At least 10 Vertical Interconnect Access (VIA) holes go through the at least two larninas and the electrically conductive surfaces.
  • the VIA holes are plated or filled with electrically conductive material, which is connected to the electrically conductive surfaces, and the VIA holes are located around the cavity forming an electrically conductive cage.
  • FIG. 3A, FIG. 3B, and FIG. 3C illustrate one embodiment of a probe 166 printed on a lamina 108c and configured to radiate millimeter- waves 276 into a laminate waveguide structure similar to the laminate waveguide structure illustrated by FIG. 2A and FIG. 2B.
  • the probe 166 is located above the laminate waveguide structure, such that at least some of the energy of the millimeter-waves 276 is captured and guided by the laminate waveguide structure.
  • the probe 166 is simply a shape printed on one of the larninas 108c as an electrically conductive surface, and configured to convert signals into millimeter-waves 276.
  • a probe may also act as a receiver of electromagnetic waves. In such a case, the probe converts received electromagnetic waves into signals. Waveguides and laminate waveguide structures are also operative to guide waves towards the probe.
  • lamina 108c used to carry the probe 166 on one side is also used to carry the ground trace 156 on the opposite side, and the lamina 108c carrying probe 166 is made out of a soft laminate material suitable to be used as a millimeter- wave band substrate in PCB. It is noted that the term “ground trace” and the term “ground layer” are used interchangeably.
  • lamina 108c which carries probe 166 and ground trace 156 or ground layer 156 and acts as a substrate, is made out of a material selected from a group of soft laminate material suitable to be used as a millimeter-wave band substrate in PCB, such as Rogers® 4350B available from Rogers Corporation Chandler, AZ, USA, Arlon CLTE-XT, or Arlon AD255A available from ARLON-MED Rancho Cucamonga, CA, USA. Such material does not participate in the electromagnetic signal path of millimeter- waves.
  • only the probe carrying lamina 108c is made out of soft laminate material suitable to be used as a millimeter- wave band substrate in PCB, while the rest of the larninas in the PCB, such as 109c, may be made out of more conventional materials such as FR-4.
  • FIG. 3D illustrates one embodiment of a printed Coplanar-Waveguide- Transmission- Line 166e reaching a probe 166d.
  • Probe 166d may be used instead of probe 166.
  • the ground 157a - signal 167 - ground 157b structure makes a good candidate for interfacing to millimeter- wave device ports.
  • a system for injecting and guiding millimeter- waves through a PCB includes at least one lamina belonging to a PCB.
  • the at least one lamina includes a cavity shaped in the form of a waveguide aperture.
  • An electrically conductive plating is applied on the insulating walls of the cavity.
  • a probe is located above the cavity and printed on a lamina belonging to the PCB.
  • the cavity guides millimeter- waves injected by the probe at one side of the cavity to the other side of the cavity.
  • FIG. 3E illustrates one embodiment of a probe 166b configured to radiate electromagnetic millimeter-waves 276b into a laminate waveguide structure comprising one lamina 109v having a cavity. Electrically conductive plating 127b is applied on the inner walls of the cavity.
  • the probe 166b is optionally located above the laminate waveguide structure, such that at least some of the energy of the millimeter-waves 276b is captured and guided by the laminate waveguide structure.
  • the probe 166b is of a Monopole-Feed type.
  • the probe 166b is of a Tapered-Slotline type.
  • a transmission line signal trace reaching the probe belongs to a Microstrip.
  • a probe is usually illustrated as the ending of a transmission line, wherein the ending is located above a waveguide aperture.
  • a probe may also be simply a portion of a transmission line such as a Microstrip, wherein the portion passes over the aperture without necessarily ending above the aperture.
  • the portion of the line departs from a ground layer or ground traces when passing over the aperture; this departure produces millimeter-waves above the aperture when signal is applied.
  • the conductivity of the electrically conductive plating 127 forming the inner surface of the waveguide is enhanced using a VIA cage comprising VIA holes 129a filled or plated with electrically conductive material.
  • a ground layer 156 or at least one ground trace associated with a transmission line signal trace 166t forms a transmission line for millimeter waves, the transmission line reaching the probe 166.
  • the ground layer 156 is electrically connected to at least one electrically conductive surface 127s, and the transmission line carries a millimeter-wave signal from a source connected to one end of the transmission line to the probe 166.
  • VIA holes 129a filled with electrically conductive material electrically connect the electrically conductive plating 127 to the ground layer or ground trace 156.
  • the at least two laminas are PCB laminas, laminated together by at least one prepreg lamina.
  • the at least two laminas are PCB laminas, out of which at least one is a prepreg bonding lamina.
  • some of the VIA holes 129a are used to electrically interconnect a ground trace 156 with electrically conductive plating 127.
  • Ground trace or ground layer 156, together with a transmission line signal trace 166t reaching the probe 166, may form a transmission line configured to carry a millimeter- wave signal from a source into the laminate waveguide structure.
  • lamina 108c may be laminated to one of the laminas of the waveguide structure using a prepreg bonding lamina (element 109c), such as FR-2 (Phenolic cotton paper), FR-3 (Cotton paper and epoxy), FR-4 (Woven glass and epoxy), FR-5 (Woven glass and epoxy), FR-6 (Matte glass and polyester), G-10 (Woven glass and epoxy), CEM-1 (Cotton paper and epoxy), CEM-2 (Cotton paper and epoxy), CEM-3 (Woven glass and epoxy), CEM-4 (Woven glass and epoxy) or CEM-5 (Woven glass and polyester).
  • FR-2 Phhenolic cotton paper
  • FR-3 Cotton paper and epoxy
  • FR-4 Wideven glass and epoxy
  • FR-5 Wiven glass and epoxy
  • FR-6 Matte glass and polyester
  • G-10 Wiven glass and epoxy
  • CEM-1 Cotton paper and epoxy
  • CEM-2 Cotton paper and epoxy
  • laminate structure may comprise a combination of both types of laminas, as usually applicable to PCB. It is noted that the lamina related processes associated with making VIA holes, cavities, electrically conductive plating, and printing of electrically conductive surfaces, are well known in the art, and are readily implemented in the PCB industry.
  • electrically conductive surfaces 127 s are printed on laminas associated with electrically conductive plating 127.
  • the surfaces 127s extend outwards from a cavity and are electrically connected to the electrically conductive plating 127.
  • a ground layer or a ground trace 156 associated with a transmission line signal trace 166t forms a transmission line for millimeter-waves, the transmission line reaching the probe 166.
  • the ground trace 156 is electrically connected to at least one of the electrically conductive surfaces 127s, and the transmission line carries a millimeter-wave signal from a source connected to one end of the transmission line to the probe 166.
  • Printing may refer to any process used to form electrically conductive shapes on laminas of PCB, such as chemical etching, mechanical etching, or direct-to-PCB inkjet printing.
  • FIG. 4A and FIG. 4B illustrate one embodiment of a laminate structure configured to guide millimeter-waves through the laminas of the structure.
  • Electrically conductive surfaces 125 are printed on at least two larninas. The surfaces extend outwards from an electrically conductive plating 125b applied on an inner surface of a cavity formed within the laminate structure. The surfaces are electrically connected to the electrically conductive plating 125b.
  • the cavity is operative to guide millimeter-waves 175 injected by a probe 165 at one side of the cavity to the other side of the cavity.
  • a ground layer or a ground trace 155 associated with a transmission line signal trace 165b forms a transmission line for millimeter- waves.
  • the ground layer or ground trace 155 is electrically connected to at least one of the electrically conductive surfaces 125 using VIA holes 129e filled with electrically conductive material.
  • the ground layer or ground trace 155 is a surface printed on the same side of a lamina carrying one of the electrically conductive surfaces 125, and the one of the electrically conductive surfaces 125 is a continuation of the ground layer or ground trace 155.
  • the transmission line is configured to carry a millimeter- wave signal 185 from one end of transmission line signal trace 165b to the probe 165. Millimeter- wave signal 185 is then converted by probe 165 into millimeter-waves 175.
  • a receiver probe is located below a cavity, and printed on a lamina belonging to a laminate structure.
  • the receiver probe receives millimeter-waves injected to the cavity by a probe located above the cavity.
  • FIG. 5 illustrates one embodiment of a laminate structure configured to generate millimeter- waves 172b, inject them through one end of a cavity formed within the laminate structure, guide the millimeter- waves 172b through the cavity, and receive them at the other end of the cavity.
  • An exemplary laminate structure comprising larninas 108A, 109A, 110A, 111A, 112A, 113A and 114A, a cavity, plated with electrically conductive plating 122, is formed within larninas 11 OA, 111A and 112A, a probe 162 printed on lamina 109 A above the cavity, and a receiving probe 161 printed on lamina 113A below the cavity.
  • Millimeter- wave signal 172a is carried by the probe 162 over the cavity, and radiated into the cavity as millimeter-waves 172b.
  • the millimeter- waves 172b are picked up by the receiving probe 161, which converts it back into a millimeter- wave signal 172c carried by the receiving probe 161.
  • Ground layers or ground traces 152, 151, electrically coupled to the electrically conductive plating, may be used to form transmission lines reaching probe 162 and receiving probe 161 respectively.
  • the transmission lines may be used in carrying the signals 172a and 172c. It is noted that the signal path is reciprocal, such that receiving probe 161 may radiate waves to be received by probe 162 via the waveguide.
  • a discrete waveguide is located below the cavity and as a continuation to the cavity.
  • the discrete waveguide passes-through waves guided by the cavity into the discrete waveguide.
  • FIG. 6A and FIG. 6B illustrate one embodiment of a laminate structure configured to generate millimeter- waves, inject the waves through one end of a cavity formed within a laminate structure, and guide the waves through the cavity into a discrete waveguide attached as continuation to the cavity.
  • An exemplary laminate structure comprising laminas 108B, 109B, HOB, 11 IB and 112B, a cavity formed within laminas HOB, 11 IB and 112B; the cavity is plated with electrically conductive plating 123, a probe 163 printed on lamina 108B, and a discrete waveguide 195 attached to lamina 112B, such that the apertures of the discrete waveguide and the cavity substantially overlap.
  • millimeter-wave signal 173a is radiated by the probe 163 into the cavity, and propagates through the cavity as millimeter-waves 173a.
  • millimeter-waves 173a then enter the discrete waveguide, and continues propagating there as millimeter- waves 173b.
  • a system for injecting and guiding millimeter- waves through a PCB includes a plurality of VIA holes passing through at least two laminas of a laminate structure belonging to a PCB.
  • the VIA holes are placed side by side forming a contour of a waveguide aperture, and the laminas are at least partially transparent to at least a range of millimeter- wave frequencies.
  • the VIA holes are plated or filled with an electrically conductive material, forming an electrically conductive cage enclosing the contour of the waveguide aperture.
  • the system further includes a probe located above the electrically conductive cage, and printed on a lamina belonging to the laminate structure.
  • the electrically conductive cage guides millimeter-waves, transmitted by the probe, through the at least two laminas.
  • FIG. 7A and FIG. 7B illustrate one embodiment of a laminate structure configured to guide millimeter- waves through a cage of VIA holes filled with electrically conductive material, embedded within the laminas of the structure.
  • a plurality of VIA holes 120j pass through at least two laminas l lOj, l l lj, and 112j of a pressed laminate structure belonging to a PCB (three laminas are illustrated by way of example).
  • the VIA holes 120j are placed side by side forming a contour of a waveguide aperture, and the laminas l lOj, l l lj, 112j are at least partially transparent to at least some frequencies of millimeter- waves.
  • the VIA holes 120j are plated or filled with an electrically conductive material, and therefore form an electrically conductive cage enclosing the contour of the waveguide aperture.
  • a probe 163j is located above the electrically conductive cage, and printed on lamina 109j belonging to the laminate structure.
  • the electrically conductive cage guides millimeter-waves 140j radiated by the probe 163j through the at least two laminas 1 lOj, 11 lj, and 112j.
  • a system for guiding millimeter- waves through a PCB includes a plurality of VIA holes passing through at least one lamina of a pressed laminate structure belonging to a PCB.
  • the VIA holes are placed side by side forming a contour of a waveguide aperture, and the lamina is at least partially transparent to at least a range of millimeter- wave frequencies.
  • the VIA holes are plated or filled with an electrically conductive material, forming an electrically conductive cage enclosing the contour of the waveguide aperture.
  • a probe is located above the electrically conductive cage, and printed on a lamina belonging to the laminate structure.
  • the electrically conductive cage guides millimeter-waves, transmitted by the probe, through the at least one lamina.
  • FIG. 7C illustrates one embodiment of a laminate structure configured to guide millimeter-waves through an electrically conductive cage of VIA holes filled with electrically conductive material, embedded within at least one lamina of structure PCB.
  • An electrically conductive cage 120t is formed in at least one lamina 1 lOt of the PCB.
  • the electrically conductive cage 120t forms a waveguide.
  • millimeter-waves 140t are formed by a probe 163t, and are guided by the waveguide.
  • a cavity is confined by an electrically conductive cage, the cavity going through at least two laminas, and millimeter-waves are guided through the cavity.
  • FIG. 8 illustrates one embodiment of the laminate structure illustrated by FIG. 7A and 7B, with the exception that a cavity 149c is formed perpendicularly through at least two larninas, and millimeter waves 149 are guided by an electrically conductive cage, made from VIA voles, through the cavity.
  • electrically conductive surfaces are printed on the at least two larninas, such that the VIA holes pass through the electrically conductive surfaces, and the electrically conductive surfaces enclose the contour.
  • FIG. 9A and FIG. 9B illustrate one embodiment of the laminate structure illustrated by FIG. 7A and FIG. 7B, with the exception that electrically conductive surfaces 151 are printed on at least two larninas. VIA holes pass through the electrically conductive surfaces 151, such that the electrically conductive surfaces 151 enclose the contour of the waveguide aperture.
  • a system for injecting and guiding millimeter- waves through a PCB includes at least two larninas belonging to a PCB.
  • the larninas are optionally contiguous and electrically insulating.
  • An electrically conductive plating is applied on the insulating walls of a cavity formed perpendicularly through the larninas.
  • the electrically conductive plating and the cavity form a waveguide,.
  • An antenna is embedded inside an Integrated Circuit.
  • the antenna is located above the cavity.
  • the Integrated Circuit is optionally soldered to electrically conductive pads printed on a lamina belonging to the PCB and located above the larninas through which the cavity is formed.
  • the cavity guides millimeter-waves injected by the antenna at one side of the cavity to the other side of the cavity.
  • the Integrated Circuit is a flip-chip or Solder-Bumped die
  • the antenna is an integrated patch antenna
  • the integrated patch antenna is configured to radiate towards the cavity.
  • FIG. 10A illustrates one embodiment of a laminate waveguide structure comprising electrically conductive plating 124, configured to guide millimeter- waves 174, in accordance with some embodiments.
  • An Integrated Circuit 200 comprising an antenna 210 is used to radiate millimeter- waves 174 into a cavity formed though larninas.
  • an antenna 210 is located above the larninas though which the cavity is formed, and the Integrated Circuit 200 is optionally soldered to pads printed on a lamina located above the larninas though which the cavity is formed.
  • the Integrated Circuit 200 is a flip-chip or Solder-Bumped die
  • the antenna 210 is an integrated patch antenna
  • the integrated patch antenna is configured to radiate towards the cavity.
  • electrically conductive surfaces are printed on the at least two larninas, the electrically conductive surfaces extending outwards from the cavity, and are electrically connected to the electrically conductive plating.
  • VIA holes go through the at least two larninas and the electrically conductive surfaces, the VIA holes are optionally plated or filled with electrically conductive material electrically connected to the electrically conductive surfaces, and the VIA holes are located around the cavity forming an electrically conductive cage extending the waveguide above the cavity towards the Integrated Circuit.
  • the electrically conductive pads are ground pads electrically connected to ground bumps of the Flip Chip or Solder Bumped Die, and the VIA holes extending from the waveguide reaching the ground pads.
  • the electrically conductive material is electrically connected to the ground bumps of the Flip Chip or Solder Bumped Die.
  • FIG. 10B illustrates one embodiment of the laminate waveguide structure illustrated by FIG. 10A, with the exception that electrically conductive surfaces 126y are printed on at least two of the larninas, extending outwards from the cavity, and are electrically connected to the electrically conductive plating.
  • VIA holes 129y go through the at least two larninas and the electrically conductive surfaces 126y.
  • the VIA holes 129y are plated or filled with electrically conductive material electrically connected to the electrically conductive surfaces 126y, and the VIA holes 129y located around the cavity forming an eclectically conductive cage in accordance with some embodiments.
  • the electrically conductive cage extends above the cavity and lengthens the laminate waveguide structure. In one embodiment the electrically conductive cage extends to the top of the PCB through ground pads 127y on the top lamina. In one embodiment the electrically conductive cage connects to ground bumps 128y of the Integrated Circuit, creating electrical continuity from the ground bumps 128y of the Integrated Circuit to the bottom end of the cavity.
  • electrically conductive cage made from VIA holes within a PCB extends the length of a waveguide attached to the PCB.
  • the cage seals the waveguide with an electrically conductive surface attached to the VIA cage.
  • the electrically conductive surface is printed on one of the larninas of the PCB, such that both the electrically conductive cage and the electrically conductive surface are contained within the PCB.
  • a probe is printed on one of the larninas of the PCB. The probe is located inside the electrically conductive cage, such that transmitted radiation is captured by the waveguide, and guided towards the unsealed end of the waveguide.
  • a system for directing electromagnetic millimeter-waves towards a waveguide using an electrically conductive formation within a Printed Circuit Board includes a waveguide having an aperture, and at least two larninas belonging to a PCB.
  • a first electrically conductive surface is printed on one of the larninas and located over the aperture such that the first electrically conductive surface covers at least most of the aperture.
  • a plurality of Vertical Interconnect Access (VIA) holes are filled or plated with an electrically conductive material electrically connecting the first electrically conductive surface to the waveguide, forming an electrically conductive cage over the aperture.
  • a probe is optionally printed on one of the larninas of the PCB and located inside the cage and over the aperture.
  • the system directs millimeter-waves, transmitted by the probe, towards the waveguide.
  • the waveguide is a discrete waveguide attached to the PCB, and electrically connected to the electrically conductive cage.
  • FIG. 11 A, FIG. 11B, and FIG. 11C illustrate one embodiment of a system configured to direct millimeter- waves towards a discrete waveguide using an electrically conductive formation within a PCB.
  • the PCB is illustrated as having larninas 320, 321, 322, 323 and 324 by way of example, and not as a limitation.
  • a discrete waveguide 301 is attached to a lamina 324 belonging to a PCB, optionally via an electrically conductive ground plating 310 printed on lamina 324, and such that the aperture 330 of the discrete waveguide 301 is not covered by the electrically conductive ground plating 310.
  • the first electrically conductive surface 313 has an area at least large enough to cover most of the aperture 330, and optionally cover the entire aperture 330.
  • a plurality of VIA holes 311 (not all VIA holes are illustrated or have reference numerals), filled or plated with an electrically conductive material, are used to electrically connect the first electrically conductive surface 313 to the discrete waveguide 301.
  • An electrically conductive cage 302 is formed over the aperture 330 by a combination of the VIA holes 311 filled or plated with an electrically conductive material and the first electrically conductive surface 313.
  • the electrically conductive cage 302 creates an electrical continuity with the discrete waveguide 301, and substantially seals it electro magnetically. It is noted that the entire electrically conductive cage 302 is formed within the PCB.
  • a probe 312 is optionally printed on one of the larninas located between lamina 322 and the discrete waveguide, such as lamina 342. The probe 312 is located inside the electrically conductive cage 302 and over the aperture 330. In one embodiment, the probe 312 enters the electrically conductive cage 302 through an opening 331 that does not contain VIA holes. A signal reaching the probe 312 is radiated by the probe 312 inside the electrically conductive cage 302 as millimeter- waves 335.
  • the electrically conductive cage 302 together with the discrete waveguide 301 are configured to guide the millimeter- waves 335 towards the unsealed end of the discreet waveguide 301.
  • the electrically conductive cage 302 prevents energy loss, by directing radiation energy towards the unsealed end of the discrete waveguide 301.
  • the first electrically conductive surface 313 is not continuous, and is formed by a printed net or printed porous structure operative to reflect millimeter- waves.
  • FIG. 12A and FIG. 12B illustrate one embodiment of a system configured to direct electromagnetic millimeter-waves towards a laminate waveguide structure, using an electrically conductive formation within the PCB.
  • a laminate waveguide structure 330c is included.
  • the laminate waveguide structure 330c has an aperture 330b.
  • At least two larninas 348, 349, 350 belonging to a PCB are also included.
  • a first electrically conductive surface 361 is printed on one of the larninas, such as lamina 348, and is located over the aperture 330b such that the first electrically conductive surface 361 covers at least most of the aperture 330b.
  • a plurality of Vertical Interconnect Access (VIA) holes 371 are filled or plated with an electrically conductive material electrically connecting the first electrically conductive surface 361 to the laminate waveguide structure 330c, forming an electrically conductive cage 302b over the aperture 330b.
  • a probe 362 is optionally printed on one of the larninas of the PCB and located inside the cage 302b and over the aperture 330b.
  • the laminate waveguide structure 330c within the PCB includes at least one additional lamina, such as larninas 351, 352, 353, 354 through which the laminate waveguide structure 330c is formed, the at least one additional lamina belongs to the PCB, and has a cavity 330d shaped in the form of the aperture 330b.
  • an electrically conductive plating 380 is applied on the walls of the cavity 330d.
  • the cavity 330d is located below the electrically conductive cage 302b.
  • additional electrically conductive surfaces 380b are printed on the at least one additional lamina 351, 352, 353, 354.
  • the additional electrically conductive surfaces 380b extend outwards from the cavity 330d, and are electrically connected to the electrically conductive plating 380, wherein the VIA holes 371 extend through the additional electrically conductive surfaces 380b and around the electrically conductive plating 380.
  • the thickness of the lamina carrying the first electrically conductive surface is operative to best position the first electrically conductive surface relative to the probe 362 in order to optimize millimeter-wave energy propagation through the waveguide and towards the unsealed end of the waveguide, optionally at a frequency band between 20GHz and 100GHz.
  • the frequency band between 20GHz and 100GHz is 57GHz-86GHz (29GHz).
  • a ground layer or at least one ground trace 362c associated with a transmission line signal trace 362b forms a transmission line for millimeter-waves, reaching the probe 362.
  • the ground trace 362c is electrically connected to at least one of the additional electrically conductive surfaces 380b.
  • the transmission line carries a millimeter-wave signal from a source connected to one end of the transmission line to the probe 362.
  • the ground layer or at least one ground trace 362c is connected to at least one of the additional electrically conductive surfaces 380b through at least one of the VIA holes 371, or through at least one additional VIA hole not illustrated.
  • the same lamina 350 used to carry the probe 362 on one side is the lamina used to carry the ground trace 362c on the opposite side.
  • the lamina 350 carrying the probe is made out of a soft laminate material suitable to be used as a millimeter-wave band substrate in PCB, such as Rogers® 4350B, ArlonTM CLTE- XT, or Arlon AD255A.
  • the aperture 330b is dimensioned to result in a laminate waveguide structure 330c having a cutoff frequency above 20GHz.
  • FIG. 13 illustrates one embodiment of a system for directing electromagnetic millimeter- waves towards a waveguide using an electrically conductive formation within a Printed Circuit Board (PCB).
  • the system includes a laminate waveguide structure 393c having an aperture 393b, and at least two larninas 390a, 390b, 390c belonging to a PCB.
  • a first electrically conductive surface 361b is printed on one of the larninas 390a and located over the aperture 393b.
  • the first electrically conductive surface 361b has an area at least large enough to cover most of the aperture 393b.
  • a plurality of Vertical Interconnect Access (VIA) holes 371b are filled or plated with an electrically conductive material, electrically connecting the first electrically conductive surface 361b to the laminate waveguide structure 393c, forming an electrically conductive cage 302c over the aperture 393b.
  • a millimeter- wave transmitter device 391 is optionally placed on one of the larninas 390a, inside a first cavity 393e formed in at least one of the larninas 390b, 390c, and contained inside the electrically conductive cage 302c over the aperture 393b.
  • the system directs millimeter-waves 395, transmitted by the millimeter- wave transmitter device 391 using an integrated radiating element 392, towards the laminate waveguide structure 393c.
  • the laminate waveguide structure includes at least one additional lamina 390d, 390e, 390f, belonging to the PCB and having a second cavity 393d shaped in the form of the aperture 393b, and an electrically conductive plating 394 applied on walls of the second cavity 393d.
  • the second cavity 393d is located below the electrically conductive cage 302c, and the electrically conductive cage 302c optionally reaches and electrically connects with the electrically conductive plating 394 via additional electrically conductive surfaces 394b extending outwards from the electrically conductive plating 394.
  • the electrically conductive cage 302c comprising the first electrically conductive surface 361b prevents energy loss by directing millimeter- waves 395 towards the unsealed end of the laminate waveguide structure 393c.
  • FIG. 14 illustrates one embodiment of a system for directing electromagnetic millimeter- waves towards a waveguide using an electrically conductive formation within a Printed Circuit Board (PCB).
  • the system includes a waveguide 396 having an aperture 425, and at least two laminas belonging to a PCB 420a, 420b, 420c, 420d, 420e, 420f, 420g.
  • a first electrically conductive surface 421 is printed on one of the laminas 420a and located over the aperture 425, the first electrically conductive surface 421 having an area at least large enough to cover most of the aperture 425.
  • a plurality of Vertical Interconnect Access (VIA) holes 422 are filled or plated with an electrically conductive material and electrically connect the first electrically conductive surface 421 to the waveguide 396, forming an electrically conductive cage 423 over the aperture 425.
  • a millimeter-wave transmitter device 398 is optionally placed on one of the laminas 420c, inside a first cavity 424 formed in at least one of the laminas, 420d, 420e, 420f, 420g, and is contained inside the electrically conductive cage 423 over the aperture 425.
  • the system directs millimeter- waves 399, transmitted by the millimeter- wave transmitter device 398 using an integrated radiating element 397, towards the waveguide 396.
  • the waveguide 396 is a discrete waveguide attached to the PCB, and electrically connected to the electrically conductive cage 423.
  • the area of the first electrically conductive surface 421 is large enough to substantially cover the aperture of a waveguide.
  • FIG. 15 illustrates one embodiment of a system for injecting, guiding, and receiving millimeter- waves inside a Printed Circuit Board (PCB).
  • the system includes at least two laminas, illustrated as seven laminas 411, 412, 413, 414, 415, 416, 417 by way of example, belonging to a PCB, and two electrically conductive surfaces 401, 402 printed on the at least two laminas 411, 417, each electrically conductive surface printed on a different lamina.
  • a plurality of Vertical Interconnect Access (VIA) holes 403 are filled or plated with an electrically conductive material, and placed side by side forming a contour of a waveguide aperture 410b.
  • VIP Vertical Interconnect Access
  • a transmitter probe 405 is optionally located within the waveguide 410, and is printed on one of the at least two larninas 411.
  • a receiver probe 406 is located within the waveguide 410, and is printed on one of the at least two larninas 417 not carrying the transmitter probe 405.
  • the receiver probe 406 configured to receive millimeter- waves 409 injected to the waveguide 410 by the transmitter probe 405.
  • at least two of the larninas 413, 414, 415 located between the transmitter probe 405 and the receiver probe 406 are contiguous, and include a cavity 410c formed in the at least two of the larninas 413, 414, 415.
  • An electrically conductive plating 410d is applied on the walls of the cavity 410c. In one embodiment, the electrically conductive plating 410d enhances the conductivity of the waveguide 410.
  • FIG. 16 illustrates one embodiment of a system for injecting, guiding, and receiving millimeter-waves inside a PCB, similar to the system illustrated by FIG. 15, with the only difference being that the electrically conductive cage 410k does not comprise a cavity.
  • the electrically conductive cage 410k of the waveguide is formed solely by VIA holes filled or plated with electrically conductive material.
  • a bare-die Integrated Circuit is placed in a specially made cavity within a PCB.
  • the cavity is optionally made as thin as the bare-die Integrated Circuit, such that the upper surface of the bare-die Integrated Circuit levels with an edge of the cavity.
  • This arrangement allows wire-bonding or strip-bonding signal and ground contacts on the bare-die Integrated Circuit with pads located on the edge of the cavity and printed on a lamina of the PCB.
  • the wire or strip used for bonding may be kept very short, because of the tight placement of the bare-die Integrated Circuit side-by-side with the edge of the cavity, and due to the fact that the bare-die Integrated Circuit may level at substantially the same height of the cavity edge. Short bonding wires or strips may facilitate efficient transport of millimeter-wave signals from the bare-die Integrated Circuit to the pads and vice versa.
  • the pads may be part of transmission line formations, such as Microstrip or waveguides, used to propagate signals through the PCB into other components and electrically conductive structures inside and on the PCB.
  • a system enabling interface between a millimeter-wave bare- die and a Printed Circuit Board includes a cavity of depth equal to X formed in at least one lamina of a PCB. Three electrically conductive pads are printed on one of the laminas of the PCB, the pads substantially reach the edge of the cavity.
  • a bare-die Integrated Circuit or a heightened bare-die Integrated Circuit, optionally having a thickness equal to X, is configured to output a millimeter-wave signal from three electrically conductive contacts arranged in a ground- signal- ground configuration on an upper side edge of the bare-die Integrated Circuit.
  • the bare-die Integrated Circuit is placed inside the cavity optionally such that the electrically conductive pads and the upper side edge containing the electrically conductive contacts are arranged side-by- side at substantially the same height.
  • Three bonding wires or strips electrically connect each electrically conductive contact to one of the electrically conductive pads.
  • the system transports millimeter-wave signals from the electrically conductive contacts to the electrically conductive pads across the small distance formed between the electrically conductive contacts and the electrically conductive pads.
  • FIG. 17A, FIG. 17B, FIG, 17C, and FIG. 17D illustrate one embodiment of a low- loss interface between a millimeter- wave bare-die Integrated Circuit 471 or a heightened bare-die Integrated Circuit 47 lh and a PCB 470.
  • the heightened bare-die Integrated Circuit 47 lh may include a bare-die Integrated Circuit 471b mounted on top of a heightening platform 479.
  • the heightening platform 479 may be heat conducting, and may be glued or bonded to the bare-die Integrated Circuit 471b.
  • a bare-die Integrated Circuit is completely interchangeable with a heightened bare-die Integrated Circuit.
  • a cavity 450 of depth equal to X is formed in the PCB, in at least one lamina of the PCB illustrated as two laminas 452 by way of example.
  • the depth of the cavity 450 is denoted by numeral 451.
  • Other embodiments not illustrated may include a cavity inside a single lamina, the cavity being of depth lesser than the single lamina, or a cavity through multiple laminas ending inside a lamina.
  • Three electrically conductive pads 461, 462, 463, are printed on one of the laminas of the Board, such that the electrically conductive pads 461, 462, 463 substantially reach the upper side edge 472 of the cavity 450.
  • the thickness of the bare-die Integrated Circuit 471 is denoted by numeral 451b.
  • the thickness of the heightened bare-die Integrated Circuit 47 lh is denoted by numeral 45 lh.
  • the thickness 451b of the bare-die Integrated Circuit 471 or the thickness 45 lh of the heightened bare-die Integrated Circuit 47 lh is substantially the same as the depth 451 of the cavity 450.
  • the bare-die Integrated Circuit is configured to transmit and/or receive millimeter-wave signals from three electrically conductive contacts 481, 482, 483 arranged in a ground- signal- ground configuration on an upper side edge of the bare-die Integrated Circuit 471.
  • the bare-die Integrated Circuit 471 is placed inside the cavity 450 such that the electrically conductive pads 461, 462, 463 and the upper side edge 472 are arranged side-by- side at substantially the same height equal to X above the floor of the cavity.
  • Three bonding wires 491, 492, 493 or strips are used to electrically connect each electrically conductive contact 481, 482, 483 to one of the electrically conductive pads 461, 462, 463 respectively.
  • the interface is operative to transport a millimeter-wave signal from the electrically conductive contacts 481, 482, 483 to the electrically conductive pads 461, 462, 463 across a distance 499 which is small and formed between the electrically conductive contacts 481, 482, 483 and the electrically conductive pads 461, 462, 463.
  • X is between 100 micron and 300 micron. In one embodiment the distance 499 is smaller than 150 micron. In one embodiment the distance 499 is smaller than 250 micron. In one embodiment the distance 499 is smaller than 350 micron. In one embodiment, at least one additional lamina belonging to the PCB is located above the at least one lamina in which the cavity 450 of depth equal to X is formed. The at least one additional lamina having a second cavity above the cavity of depth equal to X, such that the bare-die Integrated Circuit 471, the bonding wires 491, 492, 493, and the electrically conductive pads 461, 462, 463 are not covered by the at least one additional lamina, and the two cavities form a single cavity space.
  • a sealing layer placed over the second cavity, environmentally seals the bare-die Integrated Circuit 471, the bonding wires 491, 492, 493, and the electrically conductive pads 461, 462, 463, inside the PCB.
  • a plurality of Vertical Interconnect Access (VIA) holes reach the floor of the cavity 450 and are thermally coupled to the bottom of the bare-die Integrated Circuit or heightening platform.
  • the heat conducting material may both thermally conduct heat away from the bare-die Integrated Circuit into a heat sink coupled to the VIA holes, and maintain a sealed environment inside the cavity.
  • the heat conducting material is operative to maintain a sealed environment inside the cavity.
  • Conducting epoxy, solder or copper is operative to both maintain a sealed environment inside the cavity, and conduct heat.
  • FIG. 18A and FIG. 18B illustrate one embodiment of sealing a bare-die Integrated Circuit 471.
  • At least one additional lamina illustrated as two additional larninas 473 by way of example, is located above the larninas 452 through which the cavity 450 of depth equal to X is formed.
  • the additional larninas 473 have a second cavity 476 above the cavity 450 of depth equal to X, such that the bare-die Integrated Circuit 471, the bonding wires 491, 492, 493, and the electrically conductive pads 461, 462, 463 are not covered by additional larninas 473, and the cavity 450 and the second cavity 476 form a single cavity space 475.
  • a sealing layer 474 is placed over the second cavity 476, such that the bare-die Integrated Circuit 471, the bonding wires 491, 492, 493, and the electrically conductive pads 461, 462, 463 are environmentally sealed inside the PCB.
  • the sealing layer 474 may be constructed from millimeter- wave absorbing material such as ECCOSORB BSR provided by Emerson & Cuming, in order to prevent spurious oscillations.
  • the sealing layer 474 may be attached to the additional larninas 473 using adhesive, or soldered to the additional larninas 473, in order to provide hermetic seal.
  • a plurality of Vertical Interconnect Access holes 478 reach the floor of cavity 450.
  • the heat conductive fill is thermally coupled to the bottom of the bare-die Integrated Circuit 471 or the heightening platform 479.
  • the heat conducting material is optionally operative to both (i) thermally conduct heat away from the bare-die Integrated Circuit 471 into a heat sink coupled to the holes, and (ii) maintain a sealed environment inside the single cavity space 475, protecting a bare-die Integrated Circuit 471 against environmental elements such as humidity and dust.
  • a laminate waveguide structure is embedded in the laminas of PCB 470.
  • a probe is printed on the same lamina as the electrically conductive pad 462 connected to the electrically conductive contact 482 associated with the signal, and located inside the laminate waveguide structure.
  • a transmission line signal trace is printed as a continuation to the electrically conductive pad 462 connected to the electrically conductive contact 482 associated with the signal, the transmission line signal trace electrically connecting the electrically conductive contact 482 associated with the signal, to the probe.
  • the system guides a signal from the bare-die Integrated Circuit 471, through the transmission line signal trace, into the laminate waveguide structure, and outside of the laminate waveguide structure.
  • additional laminas 473 belonging to the PCB 470 are located above laminas 452 in which the cavity 450 of depth equal to X is formed.
  • the additional laminas 473 having a second cavity 476 above the cavity 450 of depth equal to X, such that the bare-die Integrated Circuit 471 and the bonding wires 491, 492, 493 are not covered by the additional laminas 473, and the two cavities 450, 476 form a single cavity space 475.
  • the laminate waveguide structure embedded in the laminas of the PCB 470 includes a third cavity optionally having an electrically conductive plating, in at least some of the laminas of the PCB 470, and optionally a first electrically conductive surface printed on one of the additional laminas 473.
  • the first electrically conductive surface seals the laminate waveguide structure from one end using an electrically conductive cage comprising VIA holes, in accordance with some embodiments.
  • two electrically conductive pads connected to the electrically conductive contacts 481, 483 associated with the ground are electrically connected, using electrically conductive VIA structures, to a ground layer below the electrically conductive pads, wherein the ground layer together with the transmission line signal trace form a Microstrip transmission line.
  • two electrically conductive pads connected to the electrically conductive contacts 481, 483 associated with the ground are continued as two electrically conductive traces alongside the transmission line signal trace, forming a Co- planar transmission line together with the transmission line signal trace.
  • FIG. 19A and FIG. 19B illustrate two embodiments of a bare-die Integrated
  • Circuit 47 It, 47 lu similar to bare-die Integrated Circuit 471, electrically connected to a transmission line signal trace 572, 572u.
  • the electrically conductive pads 46 It, 463t configured as ground are connected, using electrically conductive VIA structures 572t, to a ground layer 571 printed under the transmission line signal trace 572.
  • the ground layer 571 together with the transmission line signal trace 572 form a Microstrip transmission line.
  • electrically conductive pads 575g, 576g configured as ground are continued as two electrically conductive traces 575, 576 alongside the transmission line signal trace 572u, forming a Co-planar transmission line together with the transmission line signal trace 572u.
  • the same lamina used to carry the probe and transmission line signal trace 572 on one side is the lamina used to carry the ground layer 571 on the opposite side, and is made out of a soft laminate material suitable to be used as a millimeter-wave band substrate in PCB, such as Rogers® 4350B, Arlon CLTE-XT, or Arlon AD255A.
  • FIG. 20 illustrates one embodiment of a bare-die Integrated Circuit electrically connected to a transmission line reaching a printed probe inside a laminate waveguide structure.
  • a transmission line 501 electrically connects an electrically conductive pad 501b to a probe 502; wherein the electrically conductive pad 501b is associated with an electrically conductive contact through which a millimeter-wave signal is received or transmitted, such as electrically conductive contact 482 belonging to a bare-die Integrated Circuit such as bare-die Integrated Circuit 471.
  • a probe 502 is located inside a laminate waveguide structure 507 embedded within a PCB, in accordance with some embodiments.
  • a millimeter-wave signal generated by bare-die Integrated Circuit 509 similar to bare-die Integrated Circuit 471 is injected into the transmission line 501 via bonding wires, propagates up to the probe 502, radiated by the probe 502 inside the laminate waveguide structure 507 as a millimeter-wave 505, and is then guided by the laminate waveguide structure 507 out of the PCB.
  • the millimeter- wave signal path may be bi-directional, and optionally allows millimeter-wave signals to be picked-up by the bare-die Integrated Circuit 509.
  • the bare-die Integrated Circuit 509 is placed in a cavity formed in the PCB, in accordance with some embodiments.
  • the depth 508 of a second cavity 508b formed above the cavity in which the bare-die Integrated Circuit 509 is placed can be designed such as to form a desired distance 508 between the probe 502 and a first electrically conductive surface 500a used to electromagnetically seal the laminate waveguide formation 507 at one end.
  • the additional laminas 508c having a second cavity 508b above cavity 508e, such that the bare-die Integrated Circuit 509 and the bonding wires are not covered by the additional larninas 508c, and the two cavities 508e, 508b form a single cavity space 508f, in accordance with some embodiments.
  • the laminate waveguide structure 507 embedded in the laminas of the PCB includes a third cavity 508f optionally having an electrically conductive plating 500b, in at least some of the laminas of the PCB, and optionally a first electrically conductive surface 500a printed on one of the additional larninas 508c.
  • the first electrically conductive surface 500a seals the laminate waveguide structure 507 from one end using an electrically conductive cage comprising VIA holes 500c, in accordance with some embodiments.
  • the aperture of the laminate waveguide structure 507 is dimensioned to result in a laminate waveguide structure 507 having a cutoff frequency above 20GHz. In one embodiment, the aperture of laminate waveguide structure 507 is dimensioned to result in a laminate waveguide structure 507 having a cutoff frequency above 50GHz. In one embodiment, the aperture of laminate waveguide structure 507 is dimensioned to result in a laminate waveguide structure 507 having a cutoff frequency above 57GHz.
  • a discrete waveguide is attached to the PCB 470.
  • a probe printed on the same lamina as the electrically conductive pad 462 connected to the electrically conductive contact 482 associated with the signal, and located below the aperture of the discrete waveguide.
  • a transmission line signal trace printed as a continuation to the electrically conductive pad 462 connected to the electrically conductive contact 482 associated with the signal, the transmission line signal trace electrically connecting the electrically conductive contact 482 associated with the signal to the probe.
  • the system guides a signal from the bare-die Integrated Circuit 471, through the transmission line signal trace, into the discrete waveguide, and outside of the discrete waveguide.
  • additional laminas 473 belonging to the PCB 470 are located above laminas 452 in which the cavity 450 of depth equal to X is formed, and carries the discrete waveguide.
  • the additional laminas 473 have a second cavity 476 above the cavity 450 of depth equal to X, such that the bare-die Integrated Circuit 471, the bonding wires 491, 492, 493, and the electrically conductive pads 461, 462, 463 are not covered by the additional laminas 473, and the two cavities 450, 476 form a single cavity space 475.
  • a first electrically conductive surface printed on a lamina located below the probe seals the discrete waveguide from one end using an electrically conductive cage comprising VIA holes.
  • FIG. 22 illustrates one embodiment of a bare-die Integrated Circuit IC, electrically connected to a transmission line signal trace ending with a probe located inside an electrically conductive cage configured to seal one end of a discrete waveguide, in accordance with some embodiments.
  • a bare-die Integrated Circuit 542 is placed inside a cavity in a PCB, and is connected with a transmission line signal trace 543b using bonding wire or strip, in accordance with some embodiments.
  • a discrete waveguide 541 is attached to the PCB.
  • a probe 543 is printed at one end of the transmission line signal trace 543b, and located below the aperture of the discrete waveguide 541.
  • a first electrically conductive surface 545 is printed on a lamina located below the probe 543, sealing the discrete waveguide from one end using an electrically conductive cage comprising VIA holes filled with eclectically conductive material, in accordance with some embodiments.
  • a millimeter- wave signal is transported by the transmission line signal trace 543b from the bare-die Integrated Circuit 542 to the probe 543, and is radiated as millimeter- waves 547 through the discrete waveguide 541.
  • a probe is printed in continuation to the electrically conductive pad 462 connected to the electrically conductive contact 482 associated with the signal.
  • a discrete waveguide is attached to the PCB 470, such that the bare-die Integrated Circuit 471 and the probe are located below the aperture of the discrete waveguide.
  • the system is configured to guide a signal from the bare-die Integrated Circuit 471, through the probe, into the discrete waveguide, and outside of the discrete waveguide.
  • a first electrically conductive surface printed on a lamina located below the probe and bare-bare-die Integrated Circuit 471 seal the discrete waveguide from one end using an electrically conductive cage comprising VIA holes, such that the probe and bare-bare-die Integrated Circuit 471 are located inside the electrically conductive cage.
  • FIG. 23 illustrates one embodiment of a bare-die Integrated Circuit 559, electrically connected to a probe 551, both located inside an electrically conductive cage 553 that seals one end of a discrete waveguide 541b.
  • a bare-die Integrated Circuit 559 is placed inside a cavity in a PCB, and is connected with a probe 551 using a bonding wire or strip, in accordance with some embodiments.
  • a discrete waveguide 541b is attached to the PCB.
  • the probe 551 is located below the aperture of the discrete waveguide 541b.
  • a first electrically conductive surface 552 is printed on a lamina located below the probe 551, sealing the discrete waveguide 541b from one end using an electrically conductive cage 553 comprising VIA holes 554 filled with electrically conductive material, in accordance with some embodiments.
  • Both the bare-die Integrated Circuit 559 and the probe 551 are located inside the electrically conductive cage 553.
  • a millimeter- wave signal is delivered to the probe 551 directly from the bare-die Integrated Circuit 559, and is radiated from there through the discrete waveguide.
  • a system for interfacing between a millimeter-wave flip-chip and a laminate waveguide structure embedded inside a Printed Circuit Board includes a cavity formed in a PCB, going through at least one lamina of the PCB. An electrically conductive pad inside the cavity is printed on a lamina under the cavity, wherein the lamina under the cavity forms a floor to the cavity.
  • a flip-chip Integrated Circuit or a Solder-Bumped die is configured to output a millimeter-wave signal from a bump electrically connected with the electrically conductive pad.
  • a laminate waveguide structure is embedded in laminas of the PCB, comprising a first electrically conductive surface printed on a lamina of the PCB above the floor of the cavity.
  • a probe is optionally printed on the same lamina as the electrically conductive pad, and is located inside the laminate waveguide structure and under the first electrically conductive surface.
  • a transmission line signal trace is printed as a continuation to the electrically conductive pad, the transmission line electrically connecting the bump associated with the signal to the probe.
  • the system guides a signal from the flip-chip or Solder-
  • the laminate waveguide structure embedded in the laminas of the PCB includes a second cavity, plated with electrically conductive plating, in at least some of the laminas of the PCB, and the first electrically conductive surface printed above the second cavity seals the laminate waveguide structure from one end using an electrically conductive cage comprising VIA holes.
  • FIG. 21 illustrates one embodiment of a flip-chip Integrated Circuit, or Solder- Bumped die 521, electrically connected to a transmission line signal trace 523 reaching a probe 525 inside a laminate waveguide structure 529.
  • a cavity 528 is formed in a PCB, going through at least one lamina of the PCB.
  • An electrically conductive pad 522b is printed on a lamina 528b comprising the floor of the cavity 528c.
  • a flip-chip Integrated Circuit, or Solder-Bumped die, 521, placed inside cavity 528, is configured to output a millimeter-wave signal from a bump 522 electrically connected to the electrically conductive pad 522b.
  • a laminate waveguide structure 529 in accordance with some embodiments, is embedded in the PCB.
  • a probe 525 is printed on the same lamina 528b as the electrically conductive pad 522b, and located inside the laminate waveguide structure 529, under a first electrically conductive surface 526 printed above lamina 528b.
  • a transmission line signal trace 523 printed as a continuation to the electrically conductive pad 522b, is electrically connecting the bump to the probe 525.
  • the system is configured to guide a signal from the flip-chip Integrated Circuit, 521 through the transmission line signal trace 523, into the laminate waveguide structure 529, and outside of the laminate waveguide structure 529 in the form of millimeter- waves 527.
  • the depth of the cavity 528 can be designed such as to form a desired distance between the probe 525 and a first electrically conducive surface 526 used to electromagnetically seal the laminate waveguide structure at one end.
  • the flip-chip Integrated Circuit, or Solder-Bumped die is sealed inside the cavity 528, in accordance with some embodiments.
  • the laminate waveguide structure 529 embedded in the laminas of the PCB includes a second cavity 529b, plated with electrically conductive plating 526c, in at least some of the laminas of the PCB, and the first electrically conductive surface 526 printed above the second cavity 529b seals the laminate waveguide structure 529 from one end using an electrically conductive cage 526a comprising VIA holes 526b.
  • a system enabling interface between a millimeter-wave bare- die Integrated Circuit and a Printed Circuit Board includes a cavity of depth equal to X formed in at least one lamina of a PCB. Two electrically conductive pads are printed on one of the laminas of the PCB, the electrically conductive pads reach the edge of the cavity,.
  • a bare-die Integrated Circuit of thickness equal to X, or a heightened bare-die Integrated Circuit of thickness equal to X, is configured to output a millimeter- wave signal from two electrically conductive contacts arranged in differential signal configuration on an upper side edge of the bare-die Integrated Circuit; the bare-die Integrated Circuit is placed inside the cavity such that the electrically conductive pads and the upper side edge containing the electrically conductive contacts are arranged side- by-side at substantially the same height. Two bonding wires or strips electrically connect each electrically conductive contact to a corresponding electrically conductive pad.
  • the system transports millimeter-wave signals from the electrically conductive contacts to the electrically conductive pads across the small distance formed between the electrically conductive contacts and the electrically conductive pads.
  • a laminate waveguide structure is embedded in the laminas of the PCB.
  • a probe is printed on the same lamina as the electrically conductive pads, and located inside the laminate waveguide structure.
  • a co-planar or slot-line transmission line printed as a continuation to the electrically conductive pads, the co-planar or slot- line transmission line electrically connecting the electrically conductive pads to the probe.
  • the system guides a signal from the bare-die Integrated Circuit, through the co-planar or slot-line transmission line, into the laminate waveguide structure, and outside of the laminate waveguide structure.
  • a discrete waveguide is attached to the PCB.
  • a probe is printed on the same lamina as the electrically conductive pads, and located below the aperture of the discrete waveguide.
  • a co-planar or slot-line transmission line is printed as a continuation to the electrically conductive pads, the co-planar or slot-line transmission line electrically connecting the electrically conductive pads to the probe.
  • the system guides a signal from the bare-die Integrated Circuit, through the co-planar or slot-line transmission line, into the discrete waveguide, and outside of the discrete waveguide.
  • FIG. 19C illustrates one embodiments of a bare-die Integrated Circuit 47 lv or a heightened bare-die Integrated Circuit electrically connected to a co-planar or slot-line transmission line 575d, 576d.
  • the bare-die Integrated Circuit 47 lv of thickness equal to X is placed in a cavity of depth equal to X, in accordance with some embodiments.
  • Two bonding wires 489a, 489b are used to electrically connect electrically conductive contacts 479a, 479b, arranged in differential signal configuration on the bare-die Integrated Circuit, to two electrically conductive pads 499a, 499b, extending into the co- planar or slot-line transmission line 575d, 576d transmission line.
  • the transmission line reaches a probe 575p.
  • the probe is located either above a laminate waveguide structure formed within the PCB, or below a discrete waveguide attached to the PCB, in accordance with some embodiments.
  • a bare-die Integrated Circuit implemented in SiGe (silicon- germanium) or CMOS typically has electrically conductive contacts placed on the top side of the bare-die Integrated Circuit.
  • the electrically conductive contacts are optionally arranged in a tight pitch configuration, resulting in small distances between one electrically conductive contact center point to a neighboring electrically conductive contact center point. According to one example, a 150 micron pitch is used.
  • the electrically conductive contacts are connected with electrically conductive pads on the PCB via bonding wires or strips.
  • the bonding wires or strips have a characteristic impedance typically higher than the impedance of the bare-die Integrated Circuit used to drive or load the bonding wires.
  • the bonding wires have a characteristic impedance between 75 and 160 ohm, and a single ended bare-die Integrated Circuit has an impedance of 50 ohm used to drive or load the bonding wires.
  • a narrow transmission line signal trace printed on the PCB is used to transport a millimeter- wave signal away from the electrically conductive pads.
  • the narrow transmission line signal trace is narrow enough to fit between two electrically conductive pads of ground, closely placed alongside corresponding electrically conductive contacts of ground on the bare-die Integrated Circuit.
  • the thin transmission line signal trace has a width of 75 microns, which allows a clearance of about 75 microns to each direction where electrically conductive pads of ground are found, assuming a ground- signal- ground configuration at an electrically conductive contact pitch (and corresponding electrically conductive pad pitch) of 150 microns.
  • the thin transmission line signal trace results in a characteristic impedance higher than the impedance of the bare-die Integrated Circuit used to drive or load the bonding wires, and typically in the range of 75 - 160 ohm.
  • a long-enough thin transmission line signal trace together with the bonding wires or strips, creates an impedance match for the bare-die Integrated Circuit impedance used to drive or load the bonding wires.
  • the length of the thin transmission line signal trace is calculated to result in said match.
  • the thin transmission line signal trace widens to a standard transmission line width, having standard characteristic impedance similar to the bare-die Integrated Circuit impedance used to drive or load the bonding wires, and typically 50 ohm.
  • a system for matching impedances of a bare-die Integrated Circuit and bonding wires includes a bare-die Integrated Circuit or a heightened bare-die Integrated Circuit configured to output or input, at an impedance of Z3, a millimeter- wave signal from three electrically conductive contacts arranged in a ground- signal- ground configuration on an upper side edge of the bare-die Integrated Circuit.
  • the spacing between the center point of the electrically conductive contact associated with the signal to each of the center points of the electrically conductive contact associated with the ground is between 100 and 250 microns.
  • Three electrically conductive pads are printed on one of the laminas of a Printed Circuit Board (PCB), arranged in a ground- signal- ground configuration alongside the upper side edge of the bare-die Integrated Circuit, and connected to the three electrically conductive contacts via three bonding wires respectively, the bonding wires have a characteristic impedance of Zl, wherein Z1>Z3.
  • the electrically conductive pad associated with the signal extends to form a transmission line signal trace of length L, the transmission line signal trace has a first width resulting in characteristic impedance of Z2, wherein Z2>Z3.
  • the transmission line signal trace widens to a second width, higher than the first width, after the length of L, operative to decrease the characteristic impedance of the transmission line signal trace to substantially Z3 after the length L and onwards, where Z3 is at most 70% of Z2 and Z3 is at most 70% of Zl.
  • the system is configured to match an impedance seen by the bare-die Integrated Circuit at the electrically conductive contacts with the impedance Z3, by determining L.
  • FIG. 24A illustrates one embodiment of a system configured to match driving or loading impedances of a bare-die Integrated Circuit and bonding wires.
  • a bare-die Integrated Circuit 631 is configured to output or input at an impedance of Z3, a millimeter-wave signal from three electrically conductive contacts 633, 634, 635 arranged in a ground- signal- ground configuration on an upper side edge of the bare-die Integrated Circuit.
  • the spacings 621, 622 between the center point of the electrically conductive contact 634 to each of the center points of the electrically conductive contacts 633, 635 is between 100 and 250 microns.
  • Three electrically conductive pads 637, 638, 639 are printed on one of the laminas of a PCB.
  • the electrically conductive pads are arranged in a ground- signal- ground configuration alongside the electrically conductive contacts 633, 634, 635, or in proximity to the electrically conductive contacts.
  • the electrically conductive pads 637, 638, 639 are connected to the three electrically conductive contacts 633, 634, 635 via three short bonding wires 641, 642, 643 respectively.
  • the bonding wires 641, 642, 643 have a characteristic impedance of Z1>Z3.
  • Electrically conductive pad 638 extends to form a transmission line signal trace transmission line signal trace, denoted by numeral 627, is designed to result in a characteristic impedance of Z2, wherein Z2>Z3.
  • the transmission line signal trace widens, to a new width denoted by numeral 628, after the length of L.
  • the transmission line signal trace has a characteristic impedance of substantially Z3 after the length L and onwards.
  • Z3 is at most 70% of Z2 and Z3 is at most 70% of Zl.
  • the system matches an impedance seen by the bare-die Integrated Circuit at the electrically conductive contacts with the impedance Z3, by determining L.
  • the length L is determined such that the cumulative electrical length, up to the point where the transmission line signal trace 638b widens, is substantially one half the wavelength of the millimeter- wave signal transmitted via the electrically conductive contact 634 associated with the signal.
  • a cavity of depth equal to X is formed in the PCB, going through at least one lamina of the PCB, wherein the three electrically conductive pads 637, 638, 639 are printed on one of the larninas of the PCB, and the electrically conductive pads 637, 638, 639 substantially reach the edge of the cavity.
  • the bare-die Integrated Circuit or the heightened bare-die Integrated Circuit 631 is of thickness equal to X, and the bare-die Integrated Circuit or the heightened bare-die Integrated Circuit 631 is placed inside the cavity such that the electrically conductive pads 637, 638, 639 and the electrically conductive contacts 633, 634, 635 are arranged side-by-side at substantially the same height, in accordance with some embodiments.
  • the system transports millimeter-wave signals between the electrically conductive contacts 633, 634, 635 and the electrically conductive pads 637, 638, 639 across a small distance of less than 500 microns, formed between each electrically conductive contact 633, 634, 635 and corresponding electrically conductive pad 637, 638, 639 .
  • the two electrically conductive pads 637, 639 connected to the electrically conductive contacts 633, 635 associated with the ground are electrically connected, through Vertical Interconnect Access holes, to a ground layer below the electrically conductive pads 637, 639, wherein the ground layer together with the transmission line signal trace 638b form a Microstrip transmission line, in accordance with some embodiments.
  • the two electrically conductive pads 637, 639 connected to the electrically conductive contacts 633, 635 associated with the ground are electrically connected, using capacitive pad extensions, to a ground layer below the electrically conductive pads 637, 639, wherein the ground layer together with the transmission line signal trace form a Microstrip transmission line.
  • the capacitive pad extensions are radial stubs.
  • the same lamina used to carry transmission line signal trace 638b and electrically conductive pads 637, 638, 639 on one side is the lamina used to carry the ground layer on the opposite side, and the lamina used to carry transmission line signal trace 638b is made out of a soft laminate material suitable to be used as a millimeter-wave band substrate in PCB, such as Rogers® 4350B, Arlon CLTE-XT, or Arlon AD255A.
  • Zl is between 75 and 160 ohm
  • Z2 is between 75 and 160 ohm
  • Z3 is substantially 50 ohm.
  • the spacings 621, 622 between the center point of electrically conductive contact 634 associated with the signal to each of the center points of electrically conductive contacts 633, 635 associated with the grounds is substantially 150 microns
  • the width 627 of transmission line signal trace 638b up to length L is between 65 and 85 microns
  • the spacing between the transmission line signal trace 638b and each of electrically conductive pads 637, 639 associated with the ground is between 65 and 85 microns.
  • a transmission line signal trace 638b has a characteristic impedance Z2 between 75 and 160 ohm and length L between 0.5 and 2 millimeters, is used to compensate a mismatch introduced by bonding wires 641, 642, 643 that have a characteristic impedance Zl between 75 and 160 ohm and a length between 200 and 500 microns.
  • FIG. 24B illustrates one embodiment of using a Smith chart 650 to determine the length L.
  • Location 651, illustrated as a first X on the Smith chart represents impedance Z3, at which the bare-die Integrated Circuit inputs or outputs millimeter- wave signals.
  • Location 652, illustrated as a second X on the Smith chart represents a first shift in load seen by the bare-die Integrated Circuit, as a result of introducing the bonding wires 641, 642, 643.
  • Path 659 connecting location 652 back to location 651 in a clockwise motion, represents a second shift in load seen by the bare-die Integrated Circuit, as a result of introducing the transmission line signal trace of length L.
  • L is defined as the length of a transmission line signal trace needed to create the Smith chart motion from location 652 back to location 651, which represents a match to impedance Z3, and cancelation of a mismatch introduced by the bonding wires.
  • location 651 represents 50 ohm.
  • the system is operative to transport the millimeter- wave signal belonging to a frequency band between 20GHz and 100GHz, from electrically conductive contact 634 associated with the signal to the transmission line signal trace 638b.
  • a capacitive thickening along the transmission line signal trace 638b, and before the transmission line signal trace 638b widens, is added in order to reduce the length L needed to match the impedance seen by the bare-die Integrated Circuit 631at the electrically conductive contacts 633, 634, 635 with the impedance Z3.
  • FIG. 25 illustrates one embodiment of a system configured to match driving or loading impedances of a bare-die Integrated Circuit and bonding wires, in accordance with some embodiments, with the exception that a capacitive thickening 642 of the transmission line signal trace is added, in order to reduce the length L, denoted by numeral 641, needed to match an impedance, seen by a bare-die Integrated Circuit at electrically conductive contacts of the bare-die Integrated Circuit, with the impedance Z3 in accordance with some embodiments. All things otherwise equal, the length 641 is shorter than the length 629 of FIG. 24, because of the capacitive thickening 642.
  • a system configured to match impedances of a bare-die Integrated Circuit and bonding wires includes a bare-die Integrated Circuit or a heightened bare-die Integrated Circuit configured to output or input, at an impedance Z3, a millimeter- wave signal from two electrically conductive contacts arranged in a side-by-side differential signal configuration on an upper side edge of the bare-die Integrated Circuit.
  • Two electrically conductive pads printed on one of the larninas of a Printed Circuit Board (PCB), are arranged alongside the upper side edge of the bare-die Integrated Circuit, and connected to the two electrically conductive contacts via two bonding wires respectively, the wires have a characteristic impedance of Zl, wherein Z1>Z3.
  • the two electrically conductive pads extend to form a slot-line transmission line of length L, having a characteristic impedance of Z2, wherein Z2>Z3.
  • the slot-line transmission line is configured to interface with a second transmission line having a characteristic impedance seen by the slot-line transmission line as substantially Z3.
  • the system is configured to match an impedance seen by the bare-die Integrated Circuit at the electrically conductive contacts with the impedance Z3, by determining L.
  • a cavity of depth equal to X is formed in the PCB, going through at least one lamina of the PCB.
  • the two electrically conductive pads are printed on one of the larninas of the PCB, the electrically conductive pads substantially reach the edge of the cavity.
  • the bare-die Integrated Circuit or the heightened bare-die Integrated Circuit is optionally of thickness equal to X, and the bare-die Integrated Circuit is placed inside the cavity such that the electrically conductive pads and the upper side edge that contains the electrically conductive contacts are arranged side-by- side at substantially the same height.
  • the system is configured to transport millimeter- wave signals from the electrically conductive contacts to the electrically conductive pads across a small distance of less than 500 microns, formed between each electrically conductive contact and corresponding electrically conductive pad.
  • the lamina used to carry the slot-line transmission line is made out of a soft laminate material suitable to be used as a millimeter-wave band substrate in PCB, such as Rogers® 4350B, Rogers RT6010, Arlon CLTE-XT, or Arlon AD255A.
  • the system transports millimeter-wave signals belonging to a frequency band between 20GHz and 100GHz, from the electrically conductive contacts to the slot-line transmission line.
  • Zl is between 120 and 260 ohm
  • Z2 is between 120 and 260 ohm
  • Z3 is substantially two times 50 ohm
  • the length L is determined such that the cumulative electrical length, up to the end of the slot-line transmission line, is substantially one half the wavelength of the millimeter- wave signal transmitted via the electrically conductive contacts.
  • the second transmission line is a Microstrip
  • the interface comprises balanced-to-unbalanced signal conversion.
  • Zl is between 120 and 260 ohm
  • Z2 is between 120 and 260 ohm
  • Z3 is substantially two times 50 ohm
  • the Microstrip has a characteristic impedance of substantially 50 ohm.
  • FIG. 26 illustrates one embodiment of a system configured to match impedances of a bare-die Integrated Circuit and bonding wires.
  • a bare-die Integrated Circuit 63 Id is configured to output or input at a differential port impedance Z3, a millimeter- wave signal from two electrically conductive contacts 678, 679 arranged in a side-by-side differential signal port configuration on an upper side edge of the bare-die Integrated Circuit 63 Id.
  • Two electrically conductive pads 685, 686 are printed on one of the larninas of a PCB.
  • the electrically conductive pads 685, 686 are arranged alongside the electrically conductive contacts 678, 679, or in proximity to the electrically conductive contacts, and connected to the two electrically conductive contacts via two bonding wires 681, 682 respectively.
  • the bonding wires have a characteristic impedance of Zl, wherein Z1>Z3.
  • the two electrically conductive pads 685, 686 extend to form a slot- line transmission line 685, 686 of length L 675.
  • the slot-line transmission line 685, 686 has a characteristic impedance of Z2, wherein Z2>Z3.
  • the slot-line transmission line 685, 686 is configured to interface with a second transmission line 689 having a characteristic impedance seen by the slot-line transmission line 685, 686 as substantially Z3.
  • the system is configured to match an impedance seen by the bare-die Integrated Circuit 63 Id at the electrically conductive contacts 678, 679 with the impedance Z3, by determining L.
  • a PCB comprising a waveguide embedded within a laminate structure of the PCB, in accordance with some embodiments, is constructed by first creating a pressed laminate structure comprising a cavity belonging to a waveguide. The pressed laminate structure is then pressed again together with additional larninas to form a PCB.
  • the additional larninas comprise additional elements such as a probe printed and positioned above the cavity, and/or a bare-die Integrated Circuit placed in a second cavity within the additional larninas.
  • a method for constructing millimeter- wave laminate structures using Printed Circuit Board (PCB) processes includes the following steps: Creating a first pressed laminate structure comprising at least two larninas and a cavity, the cavity is shaped as an aperture of a waveguide, and goes perpendicularly through all larninas of the laminate structure. Plating the cavity with electrically conductive plating, using a PCB plating process.
  • PCB Printed Circuit Board
  • FIG. 27 A, FIG. 27B, FIG. 27C, and FIG. 27D illustrate one embodiment of a method for constructing a millimeter-wave laminate structure using PCB processes.
  • a first pressed laminate structure 702 comprising at least two larninas, illustrated as three larninas 705, 706 707 by way of example, and a cavity 703 is created.
  • the cavity is plated with an electrically conductive plating 704, using a PCB plating process.
  • the cavity 703 is operative to guide millimeter waves, in accordance with some embodiments.
  • the first pressed laminate structure 702 is pressed, again, together with at least two additional larninas 709, 710 comprising a probe 712, into a PCB 715 comprising the first pressed laminate structure 702 and the additional larninas 709, 710, such that the cavity 703 is sealed only from one end by the additional larninas 709, 710, and the probe 712 is positioned above the cavity 703 and operative to transmit millimeter- waves through the cavity.
  • holes 718, 719 are drilled in the additional larninas 709, 710, the holes 718, 719 operative to form a second cavity 720a. It is noted that the second cavity 720a is illustrated as being sealed, but cavity 720a may also be open if hole 718 is made through all of lamina 709. A bare-die Integrated Circuit is placed inside the second cavity 720a.
  • An electrically conductive contact on the bare-die Integrated Circuit is wire-bonded with a transmission line signal trace 712d printed on one of the additional larninas 709 that carries the probe 712, the transmission line signal trace 712d operative to connect with the probe 712 and transport a millimeter- wave signal from the bare-die Integrated Circuit to the probe 712, and into the cavity 703.
  • "drilling holes” in the specifications and claims may refer to using a drill to form the holes, may refer to using a cutting blade to form the holes, or may refer to any other hole-forming action.
  • FIG. 27B, FIG. 27C, FIG. 27D, FIG. 27E, FIG. 27F, and FIG. 27G illustrate one embodiment of a method for interfacing a laminate structure with a bare-die Integrated Circuit.
  • Holes 718, 719 are drilled in the additional larninas 709, 710.
  • the holes 718, 719 form a second cavity 720b. It is noted that hole 718 is illustrated as being partially made through lamina 709, but it may also be made fully through lamina 718, such that cavity 720b is formed unsealed.
  • a bare-die Integrated Circuit 725 is placed inside the second cavity 720b.
  • Bonding wire 727b is then used to connect an electrically conductive contact 728a on the bare-die Integrated Circuit 725 with a transmission line signal trace 712d printed on one of the additional larninas 709 that carries the printed probe 712, in accordance with some embodiments.
  • the transmission line signal trace 712d is operative to connect with the probe 712 and transport a millimeter- wave signal from the bare-die Integrated Circuit 725 to the probe 712, and into the cavity 703, in accordance with some embodiments.
  • numeral 712d denotes a transmission line signal trace which may be printed in continuation to a portion 712b' of electrically conductive pad 712b. Therefore, bonding wire 727b may be interchangeably describe as either being connected to the transmission line signal trace 712d or to the portion 712b' of electrically conductive pad 712b.
  • the holes 718, 719 in the additional larninas 709, 710 are drilled prior to the step of pressing the first laminate structure 702 together with the additional larninas 709, 710, and the holes 718, 719 operative to form the second cavity 720b after the step of pressing the first laminate structure 702 together with the additional larninas 709, 710.
  • the holes in the additional larninas 709, 710 are drilled such that the second cavity 720a is sealed inside the PCB 715 after the step of pressing the first laminate structure together with the additional larninas 709, 710.
  • an additional hole is drilled. The additional hole is operative to open the second cavity 720a when sealed.
  • the second cavity 720b may house the bare-die Integrated Circuit 725 after being opened, wherein the second cavity 720a is operative to stay clear of dirt accumulation prior to being opened.
  • holes 718, 719 in the additional laminas 709, 710 are drilled such that a second cavity 720a is sealed inside the PCB 715 after the step of pressing the first laminate structure 702 together with the additional laminas 709, 710. This may be achieved by drilling hole 718 partially through lamina 709.
  • an additional hole is drilled. The additional hole is operative to open the second cavity 720a into a second cavity 720b.
  • numerals 720a and 720b denote a second cavity
  • numeral 720a denotes the second cavity in a sealed state
  • numeral 702b denotes the second cavity in an open state.
  • the second cavity 720b is operative to house the bare-die Integrated Circuit 725
  • the second cavity 720a is operative to stay clear of dirt accumulation prior to bare-die Integrated Circuit 725 placement. Dirt accumulation may result from various manufacturing processes occurring between the step of pressing the laminate structure 702 together with laminas 709, 710, and the step of opening the second cavity 720a.
  • lamina 709 used to carry the probe 712 on one side is the same lamina used to carry a ground layer on the opposite side, and is made out of a soft laminate material suitable to be used as a millimeter- wave substrate in PCB, such as Rogers® 4350B, Arlon CLTE-XT, or Arlon AD255A.
  • the cavity 703 is dimensioned as an aperture of waveguide configured to have a cutoff frequency of 20GHz, in accordance with some embodiments.
  • Circuit with a PCB comprises: (i) printing an electrically conductive pad on a lamina of a PCB, (ii) forming a cavity in the PCB, using a cutting tool that also cuts through the electrically conductive pads during the cavity-cutting instance, leaving a portion of the electrically conductive pad that exactly reaches the edge of the cavity, (iii) placing a bare- die Integrated Circuit inside the cavity, such that an electrically conductive contact present on an upper edge of the bare-die Integrated Circuit is brought substantially as close as possible to the portion of the electrically conductive pad, and (iv) wire-bonding the portion of the electrically conductive pad to the electrically conductive contact using a very short bonding wire required to bridge the very small distance formed between the portion of the electrically conductive pad and the electrically conductive contact.
  • the upper edge of the bare-die Integrated Circuit substantially reaches the height of the portion of the electrically conductive pad, in accordance with some embodiments, resulting is a very short bonding wire, typically 250 microns in length.
  • the very short bonding wire facilitates low-loss transport of millimeter-wave signals from the bare-die Integrated Circuit to the portion of the electrically conductive pad, and to transmission lines signal traces typically connected to the portion of the electrically conductive pad.
  • a method for interfacing a bare-die Integrated Circuit with a Printed Circuit Board includes the following steps: Printing electrically conductive pads on one lamina of a PCB. Forming a cavity of depth equal to X in the PCB, going through at least one lamina of the PCB; the act of forming the cavity also cuts through the electrically conductive pads, such that portions of the electrically conductive pads, still remaining on the PCB, reach an edge of the cavity.
  • a bare- die Integrated Circuit of thickness substantially equal to X or a heightened bare-die Integrated Circuit of thickness substantially equal to X inside the cavity the bare-die Integrated Circuit configured to output a millimeter-wave signal from electrically conductive contacts on an upper side edge of the die; the die is placed inside the cavity such that the portions of the electrically conductive pads and the upper side edge containing the electrically conductive contacts are closely arranged side-by- side at substantially the same height. Wire-bonding each electrically conductive contact to one of the portions of the electrically conductive pads using a bonding wire to bridge a small distance formed between the electrically conductive contacts and the portions of the electrically conductive pads when placing the bare-die Integrated Circuit inside the cavity.
  • the electrically conductive pads comprise three electrically conductive pads 712a, 712b, 712c, printed on one of the larninas 709 of the PCB, the portions 712a', 712b', 712c' of the three electrically conductive pads 712a, 712b, 712c operative to substantially reach the edge 713 of the cavity.
  • the bare-die Integrated Circuit 725 is configured to output a millimeter-wave signal from three electrically conductive contacts 728a, 728b, 728c arranged in a ground- signal- ground configuration on the upper side edge of the die.
  • Three bonding wires 727a, 727b, 727c or strips are used to wire-bond each electrically conductive contact 728a, 728b, 728c to one of the portions 712a', 712b', 712c' of the electrically conductive pads 712a, 712b, 712c.
  • FIG. 27D, FIG. 27E, FIG. 27F, FIG. 27G, and FIG. 27H illustrate one embodiment of a method for interfacing a bare-die Integrated Circuit with a PCB, in accordance with some embodiments.
  • Electrically conductive pads 712a, 712b, 712c are printed on lamina 709 of a PCB 715.
  • a cavity 720b of depth equal to X is formed in the PCB 715.
  • At least one of the cuts used to form the cavity also cuts through the electrically conductive pads 712a, 712b, 712c the at least one cut is denoted by numeral 721, such that portions 712a', 712b', 712c' of the electrically conductive pads 712a, 712b, 712c, still remaining on the PCB, reach an edge 713 of the cavity 720b, and the other portions 714 are removed from the PCB.
  • a bare-die Integrated Circuit 725 of thickness substantially equal to X is placed inside the cavity 720b, such that the remaining portions 712a', 712b', 712c' of pads 712a, 712b, 712c and an upper side edge containing electrically conductive contacts 728a, 728b, 728c of the bare-die Integrated Circuit 725 are closely arranged side-by- side at substantially the same height, in accordance with some embodiments.
  • the electrically conductive contacts are then wire- bonded to the remaining portions 712a', 712b', 712c' of the electrically conductive pads 712a, 712b, 712c using short bonding wires 727a, 727b, 727c.
  • a probe 712 is printed on the same lamina 709 as the portion 712b' of electrically conductive pad 712b connected to the electrically conductive contact 728b associated with the signal.
  • a transmission line signal trace 712d is printed as a continuation to the portion 712b' of electrically conductive pad 712 connected to electrically conductive contact 728b associated with the signal, the transmission line signal trace 712d electrically connecting electrically conductive contact 728b associated with the signal to the probe 712.
  • the electrically conductive pads comprise two electrically conductive pads, printed on one of the larninas of the PCB, the portions 733, 734 of the two electrically conductive pads operative to substantially reach the edge of the cavity.
  • a bare-die Integrated Circuit is configured to output a millimeter- wave signal from two electrically conductive contacts arranged in a differential signal configuration on the upper side edge of the die in accordance with some embodiments.
  • Two bonding wires 735a, 735b or strips are used to wire-bond each electrically conductive contact to one of the portions 733, 734 of the electrically conductive pads, in accordance with some embodiments.
  • a probe 733c, 734c is printed on the same lamina as the portions 733, 734 of electrically conductive pads connected to electrically conductive contacts in accordance with some embodiments.
  • a slot-line transmission line 733b, 734b is printed as a continuation to portions 733, 734 of the electrically conductive pads, the slot-line transmission line 733b, 734b electrically connecting the electrically conductive contacts to the probe 733c, 734c.
  • a laminate waveguide structure is embedded in the laminas of the PCB 715 and the probe 712 is located above the laminate waveguide structure, in accordance with some embodiments.
  • the laminate waveguide structure includes cavity 703 in accordance with some embodiments.
  • FIG. 28A is a flow diagram illustrating one method of constructing laminate waveguide structures within a PCB, comprising the following steps: In step 1001, creating a first pressed laminate structure comprising a cavity. In step 1002, plating the cavity with electrically conductive material. In step 1003, pressing the first laminate structure, with additional laminas comprising a probe, into a PCB comprising the probe located above the cavity.
  • FIG. 28B is a flow diagram illustrating one method of constructing a system comprising a bare-die Integrated Circuit and a PCB, comprising the following steps: In step 1011, creating a first pressed laminate structure comprising a cavity. In step 1012, plating the cavity with electrically conductive material. In step 1013, drilling holes in additional laminas comprising a probe. In step 1014, pressing the first pressed laminate structure, with the additional laminas, into a PCB comprising the probe located above the cavity and a second cavity formed by the holes and sealed in the PCB. In step 1015, opening the sealed second cavity and inserting a bare-die Integrated Circuit into the cavity.
  • FIG. 28C is a flow diagram illustrating one method of interfacing between a bare- die Integrated Circuit and a PCB, comprising the following steps: In step 1021, printing electrically conductive pads on a PCB. In step 1022, forming a cavity of depth equal to X in the PCB, the act of forming the cavity also cuts through the electrically conductive pads, leaving portions the electrically conductive pads that reach an edge of the cavity. In step 1023, placing a bare-die Integrated Circuit of thickness substantially equal to X inside the cavity, such that electrically conductive contacts on an upper side edge of the bare-die Integrated Circuit are placed side-by- side with the portions of the electrically conductive pads. In step 1024, using bonding wires or strips to wire-bond the electrically conductive contacts with the portions of the electrically conductive pads.
  • the physical dimensions of millimeter-wave structures or components described in some embodiments are optimized for operation in the 57GHz - 86GHz band.
  • a chain comprising a filter waveguide, an extended waveguide, and optionally sub-reflectors and millimeter-wave lenses is used for accurately guiding the millimeter- waves into the focal point location of the reflector.
  • the filter waveguide achieves certain polarization characteristics by suppressing cross-polarization products.
  • the extended waveguide guides the millimeter-waves across the distance separating the filter waveguide form the focal point.
  • the filter waveguide is a relatively complex metal construction difficult to manufacture accurately, while the extended waveguide has a very simple shape, such as a tube, which can be very accurately manufactured using extrusion.
  • the combination of a filter waveguide having a relatively inaccurate structure and an extended waveguide very accurately made by extrusion meets a combined requirement for both radiation pattern accuracy and cross-polarization product suppression.
  • a system for guiding millimeter-waves includes (i) a filter waveguide shorter than 9 centimeters, having a first end featuring a first shape aperture and a second end featuring a second shape aperture.
  • the filter waveguide filters millimeter-waves applied at the first shape aperture, (ii) An extruded waveguide of length between 9 centimeters and 25 centimeters, having a cavity featuring a cross- section that is accurate to within +/-0.05 millimeters throughout the length of the extruded waveguide.
  • the cross-section is substantially shaped and sized as the second shape aperture.
  • the extruded waveguide is placed in series with the filter waveguide, such that a first aperture of the extruded waveguide is substantially aligned with the second shape aperture, and (iii) a reflector having a focal point.
  • the reflector is positioned such that the focal point is substantially located after a second aperture of the extruded waveguide.
  • the system guides millimeter-waves applied at the first shape aperture up to the location of the focal point, filters the millimeter-waves, and produces, on the reflector, an i umination pattern that is accurate to a degree that allows conforming to a first level of radiation pattern accuracy.
  • the focal point of the reflector may be (i) an actual focal point of the reflector, created by the reflector without using any additional lenses or sub-reflectors, or (ii) a focal point which is the combined result of the reflector and additional lenses or sub-reflectors placed in conjunction with the reflector.
  • FIG. 29 A illustrates one embodiment of a filter waveguide.
  • the filter waveguide 1201 is shorter than 9 centimeters, and has a first end featuring a first shape aperture 1202 and a second end featuring a second shape aperture 1203.
  • the filter waveguide 1201 filters millimeter- waves applied at the first shape aperture 1202. Similar filter waveguides having a first shape aperture and a second shape aperture are described in Application No. 12/819,206 filed on June 20, 2010.
  • the first shape aperture 1202 functions as an entrance/exit to/from cavity 1201a.
  • Cavity 1201a may have a variable cross-section.
  • the second shape aperture 1203 functions as an entrance/exit to/from cavity 1201a.
  • Cavity 1201b may have a variable cross-section.
  • FIG. 29B illustrates one embodiment of an extruded waveguide.
  • An extruded waveguide 1221 of length between 9 centimeters and 25 centimeters has a cavity 1222 featuring a cross-section 1223 that is accurate to within +/-0.05 millimeters throughout the length of the extruded waveguide 1221.
  • the cross-section 1223 is substantially shaped and sized as the second shape aperture 1203.
  • Extrusion is a process used to create objects of a fixed cross-sectional profile. A material is pushed or drawn through a die of the desired cross-section. The main advantage of this process over other manufacturing processes is its ability to form finished parts with an excellent surface finish and accuracy.
  • the extruded waveguide 1221 is manufactured using extrusion, thus achieving cavity 1222 featuring a cross-section 1223 that is accurate to within +/- 0.05 millimeters throughout the length of the extruded waveguide 1221.
  • the cross-section 1223 is circular, and has a diameter that is accurate to within +/-0.05 millimeters throughout the length of the extruded waveguide 1221.
  • the actual diameter of cross-section 1223 may also fluctuate as a function of position along the length of the extruded waveguide 1221.
  • the actual diameter of cross-section 1223 may be 4.95 millimeters at one point along the extruded waveguide 1221, and 5.05 millimeters at a different point along the extruded waveguide 1221.
  • the cross-section 1223 is rectangular, and has at least one side that is accurate to within +/-0.05 millimeters throughout the length of the extruded waveguide 1221.
  • FIG. 29C illustrates one embodiment of an extruded waveguide placed in series with a filter waveguide.
  • the extruded waveguide 1221 is placed in series with the filter waveguide 1201, such that a first aperture 1224 of the extruded waveguide is substantially aligned with the second shape aperture 1203.
  • a cavity path operative to guide millimeter- waves is created starting at the first shape aperture 1202 of the filter waveguide 1201 and ending at the second aperture 1225 of the extruded waveguide 1221.
  • FIG. 30A illustrates one embodiments of a reflector having a focal point located after a second aperture of the extruded waveguide.
  • Reflector 1250a is positioned such that focal point 1251a (denoted by an X) is located after a second aperture 1225 of extruded waveguide 1221.
  • the system guides millimeter- waves applied at the first shape aperture 1202 up to the location of focal point 1251a, filters the millimeter-waves, and produces, on reflector 1250a, an i umination pattern 1260a that is accurate to a degree that allows conforming to a first level of radiation pattern accuracy.
  • the accuracy of i umination pattern 1260a is a direct result of the +/-0.05 millimeters accuracy in the cross-section 1223 of cavity 1222 throughout the length of the extruded waveguide 1221.
  • an extruded waveguide 1221 having a length of between 9 and 25 centimeters has to feature a cross-section 1223 that is accurate to within +/-0.05 millimeters throughout the length of the extruded waveguide 1221.
  • FIG. 30B illustrates one embodiments of a reflector having a focal point located after a second aperture of the extruded waveguide.
  • Reflector 1250b and sub-reflector 1270 are positioned such that focal point 1251b (denoted by an X) is substantially located after a second aperture 1225 of extruded waveguide 1221.
  • the system guides millimeter- waves applied at the first shape aperture 1202 up to the location of focal point 1251b, filters the millimeter- waves, and produces, on reflector 1250b, an i umination pattern 1260b that is accurate to a degree that allows conforming to a first level of radiation pattern accuracy.
  • the filter waveguide 1201 filters the millimeter- waves by suppressing cross-polarization products of the millimeter-waves applied at the first shape aperture 1202.
  • the first shape aperture 1202 and a cavity 1201a of the filter waveguide 1201 are dimensioned and shaped such as to suppress millimeter- wave cross-polarization products.
  • the first shape aperture of the filter waveguide has a non- circular shape, and the non-circular shape suppresses cross-polarization products of the millimeter-waves applied at the first shape aperture 1202.
  • the non- circular shape is a rectangular shape.
  • the filter waveguide 1201 is not extruded due to having a first shape aperture 1202 and a second shape aperture 1203, resulting in manufacturing accuracy worse than +/-0.1 millimeters.
  • filter waveguide 1201 that is less accurate than +/-0.1 millimeters cannot be longer than 9 centimeters, in order not to reduce the accuracies of i uminations patterns 1260a and 1260b. Therefore, filter waveguide 1201 is shorter than 9 centimeters, while extruded waveguide 1221 may be longer than 9 centimeters.
  • filter waveguide 1201 that is relatively short and extruded waveguide 1221 that is relatively long, yields a waveguide structure 1200 operative to (i) transport millimeter-waves across distances of up to 34 centimeters, (ii) facilitate the accuracy of i umination patterns 1260a and 1260b, and (iii) facilitate radiation patterns that comply with certain polarization requirements.
  • the first shape aperture 1202 of the filter waveguide 1201 has a rectangular shape
  • the second shape aperture 1203 of the filter waveguide 1201 has a circular shape
  • the second aperture 1225 of the extruded waveguide 1221 has a circular shape as well.
  • reflector 1250a or 1250b is substantially parabolic, or comprises several parabolic shapes, and the circular shape of the second aperture 1225 of the extruded waveguide 1221 is operative to i uminate reflector 1250a or 1250b.
  • the first level of radiation pattern accuracy is in accordance with standard CFR 47 part 101.115, 10-1-09 Edition. In one embodiment, the first level of radiation pattern accuracy is in accordance with ETSI EN 302 217-4-2, VI.5.1.
  • the millimeter- waves have a frequency of between 20GHz and 100GHz. In one embodiment, the millimeter- waves have a frequency of between 57GHz and 86GHz.
  • FIG. 30C illustrates one embodiments of a reflector having a focal point located after a second aperture of the extruded waveguide.
  • a lens 1261 has one side substantially flat while the other side convex. The convex side of the lens is attached to the extruded waveguide 1221 at the second aperture 1225 of the extruded waveguide 1221.
  • a substantially flat sub-reflector 1271 is attached to the substantially flat side of the lens.
  • the lens 1261 and the substantially flat sub-reflector 1271 reflect and refract millimeter- waves exiting the extruded waveguide 1221 onto reflector 1250c.
  • the flat surfaces of lens 1261 and the substantially flat sub-reflector 1271 are inherently tolerant to inaccuracies in attaching the substantially flat sub-reflector 1271 to the substantially flat side of lens 1261, facilitating the first level of radiation pattern accuracy.
  • the lens 1261 is attached to the extruded waveguide 1221 using a protrusion 1262 of the lens 1261 having a cross-section substantially equal to the cross-section 1223 of cavity 1222 of the extruded waveguide 1221, causing the substantially flat sub-reflector 1271 to be positioned substantially perpendicularly to extruded waveguide 1221, facilitating the first level of radiation pattern accuracy.
  • millimeter- waves are accurately guided. Millimeter- waves are filtered by applying the millimeter- waves at a first shape aperture 1202 of a filter waveguide 1201, resulting in filtered millimeter- waves exiting a second shape aperture 1203 of the filter waveguide 1201.
  • the filtered millimeter- waves are transported over a distance of between 9 centimeters and 25 centimeters, by applying the filtered millimeter- waves to an extruded waveguide 1221 having a length of between 9 centimeters and 25 centimeters and having a cavity 1222 featuring a cross-section 1223 that is accurate to within +/-0.05 millimeters throughout the length of the extruded waveguide 1221, resulting in transported millimeter- waves exiting the extruded waveguide 1221.
  • An i umination pattern which is accurate to a degree that allows conforming to a first level of radiation pattern accuracy, is produced on a reflector 1250c, by applying the transported millimeter- waves at a focal point 1251c of the reflector 1250c.
  • FIG. 30D illustrates a flow diagram describing one method for accurately guiding millimeter-waves, comprising the following steps: In step 1301, filtering millimeter- waves by applying the millimeter- waves at a first shape aperture 1202 of a filter waveguide 1201, resulting in filtered millimeter- waves exiting a second shape aperture 1203 of the filter waveguide 1201.
  • step 1302 transporting the filtered millimeter- waves over a distance of between 9 centimeters and 25 centimeters, by applying the filtered millimeter- waves to an extruded waveguide 1221 having a length of between 9 centimeters and 25 centimeters and having a cavity 1222 featuring a cross-section 1223 that is accurate to within +/-0.05 millimeters throughout the length of the extruded waveguide 1221, resulting in transported millimeter- waves exiting the extruded waveguide 1221.
  • step 1303 producing, on a reflector 1250c, an i umination pattern that is accurate to a degree that allows conforming to a first level of radiation pattern accuracy, by applying the transported millimeter- waves at a focal point 1251c of the reflector 1250c.
  • a PCB including a millimeter-wave radio transceiver is mechanically fixed to an antenna feed carrying millimeter-waves between the radio transceiver and a reflector of an antenna.
  • the PCB is placed inside a protective box, but it is not directly mechanically fixed to the protective box. Instead, only the antenna feed is fixed to the protective box, and the PCB "floats" inside the box, while being firmly held by the antenna feed, which may be constructed from a single robust metal part. Having only one mechanical anchor via the antenna feed, the PCB may be very accurately attached to the antenna feed, enabling a very precise alignment of internal PCB waveguides and/or millimeter- wave probes with the antenna feed.
  • a millimeter-wave communication system includes (i) an antenna comprising a reflector and a feed, the feed comprising a first waveguide, (ii) a first Printed Circuit Board (PCB) comprising a radio receiver coupled with a probe, the first PCB is mechanically fixed to one end of the feed, such that the first PCB is mechanically held by the feed, and the probe is located in a position allowing reception of millimeter- waves exiting the first waveguide towards the first PCB, (iii) a second PCB, (iv) at least one flexible cable operative to carry base-band signals and control signals between the first PCB and the second PCB, wherein the base-band signals are generated by the radio receiver from millimeter waves received by the probe, and (v) a box housing the first PCB and the second PCB.
  • the second PCB and the feed are mechanically fixed to the box, and the only mechanical connection between the first PCB and the box is via the feed.
  • FIG. 31 illustrates one embodiment of a millimeter- wave communication system.
  • An antenna includes a reflector 1506 and a feed 1503 + 1504.
  • the feed 1503 + 1504 includes a first waveguide 1503.
  • a first PCB 1501 includes a radio receiver 1513 coupled with a probe 1512.
  • the first PCB 1501 is mechanically fixed to one end of feed 1503 + 1504, such that the first PCB 1501 is mechanicaUy held by feed 1503 + 1504, and the probe 1512 is located in a position allowing reception of millimeter- waves exiting the first waveguide 1503 towards the first PCB 1501.
  • the first PCB 1501 may be mechanically fixed to one end of feed 1503 + 1504 using bolts (not illustrated), adhesive, or any other appropriate way.
  • At least one flexible cable 1510 carries base-band signals and control signals between the first PCB 1501 and a second PCB 1502; the base-band signals are generated by radio receiver 1513 from millimeter waves received by probe 1512.
  • a box 1508 houses the first PCB 1501 and the second PCB 1502.
  • the second PCB 1502 and feed 1503 + 1504 are mechanicaUy fixed to box 1508, and the only mechanical connection between the first PCB 1501 and box 1508 is via feed 1503 + 1504.
  • the first PCB 1501 is free to make smaU position adjustments in respect to the second PCB 1502 and in respect to box 1508, as a result of being fixed to one end of feed 1503 + 1504, and as a result of not being directly fixed to box 1508.
  • the second PCB 1502 typically includes components related to modems and general data processing. The second PCB 1502 does not process millimeter-waves, and is therefore not required in any way to be aligned with feed 1503 + 1504.
  • Flexible cable 1510 is used to electrically connect the first PCB 1501 with the second PCB 1502.
  • a flexibility is needed form flexible cable 1510 in order to compensate for design, manufacturing, and assembly inaccuracies associated with the different components attached to one another.
  • design, manufacturing, and assembly inaccuracies prevent the first PCB 1501, which is anchored to feed 1503 + 1504, from being accurately aligned with the second PCB, which is anchored to box 1508.
  • probe 1512 is located above a laminate waveguide structure 1514 embedded in the first PCB 1501.
  • the laminate waveguide structure 1514 together with the first waveguide 1503 create a concatenated waveguide 1514 + 1503 operative to guide millimeter- waves directly onto probe 1512.
  • waveguide structure 1514 is accurately placed together with the first waveguide 1503, by accurately attaching the first PCB 1501 to feed 1503 + 1504, and as a result of feed 1503 + 1504 being the only mechanical connection between the first PCB 1501 and the 1508.
  • the accuracy in attachment is better than +/-0.1 millimeters during attachment and after attachment. In one embodiment, the accuracy in attachment is better than +/-0.05 millimeters during attachment and after attachment. In one embodiment, the accuracy in attachment is better than +/-0.02 millimeters during attachment and after attachment.
  • the system is configured to relieve mechanical stresses from the first PCB 1501, as a result of the feed 1503 + 1504 being the only mechanical connection between the first PCB 1501 and box 1508.
  • a second waveguide 1504 is connected in concatenation to the first waveguide 1503, together forming the feed 1503 + 1504.
  • the first PCB 1501 is mechanically fixed to the first waveguide 1503, and the first waveguide 1503 is mechanically fixed to box 1508.
  • the first waveguide 1503 may be mechanically fixed to box 1508 using bolts (not illustrated), adhesive, or any other appropriate way including welding.
  • the first PCB 1501 is mechanically fixed to the first waveguide 1503
  • the first waveguide 1503 is mechanically fixed to the second waveguide 1504
  • the second waveguide 1504 is mechanically fixed to box 1508.
  • the first PCB 1501 is smaller than the second PCB 1502, the first PCB 1501 comprises larninas suitable to function as substrates for millimeter- waves, and the second PCB 1502 is made out of standard PCB larninas.
  • a millimeter-wave communication system includes (i) an antenna comprising a reflector and a feed, the feed comprising a first waveguide, (ii) a Printed Circuit Board (PCB) comprising a modem, a processor, and a radio receiver coupled with a probe, the PCB is mechanically fixed to one end of the feed, such that the PCB is mechanically held by the feed, and the probe is located in a position allowing reception of millimeter- waves exiting the first waveguide towards the PCB, (iii) an Ethernet connector, (iv) at least one flexible cable operative to carry Ethernet signals between the first PCB and the Ethernet connector, and (v) a box housing the PCB and the Ethernet connector.
  • the Ethernet connector and the feed are mechanically fixed to the box, and the only mechanical connection between the PCB and the box is via the feed.
  • FIG. 32 illustrates one embodiment of a millimeter-wave communication system.
  • An antenna includes a reflector 1606 and a feed 1603 + 1604.
  • the feed 1603 + 1604 includes a first waveguide 1603.
  • a PCB 1601 includes a modem, a processor, and a radio receiver 1613 coupled with a probe 1612.
  • PCB 1601 is mechanically fixed to one end of feed 1603 + 1604, such that PCB 1601 is mechanically held by the feed 1603 + 1604, and the probe 1612 is located in a position allowing reception of millimeter-waves exiting the first waveguide 1603 towards PCB 1601.
  • At least one flexible cable 1610 carries Ethernet signals between PCB 1601 and an Ethernet connector 1611.
  • a box 1608 houses PCB 1601 and Ethernet connector 1611.
  • the Ethernet connector 1611 and the feed 1603 + 1604 are mechanically fixed to box 1608, and the only mechanical connection between PCB 1601 and box 1608 is via feed 1603 + 1604.
  • probe 1612 is located above a laminate waveguide structure
  • the waveguide structure 1614 is accurately placed together with the first waveguide 1603, by accurately attaching the PCB 1601 to the feed 1603 + 1604, and as a result of the feed 1603 + 1604 being the only mechanical connection between the PCB 1601 and the box 1608.
  • the system relieves mechanical stresses from PCB 1601, as a result of feed 1603 + 1604 being the only mechanical connection between PCB 1601 and box 1608.
  • a second waveguide 1604 is connected in concatenation to the first waveguide 1603, together forming feed 1603 + 1604.
  • PCB 1601 is mechanically fixed to the first waveguide 1603, and the first waveguide 1603 is mechanically fixed to box 1608.
  • PCB 1601 is mechanically fixed to the first waveguide 1603, the first waveguide 1603 is mechanically fixed to the second waveguide 1604, and the second waveguide 1604 is mechanically fixed to box 1608.
  • a millimeter- wave communication system includes an antenna comprising a reflector and a feed, the feed comprising a first waveguide, and the first waveguide doubles as a box operative to house electronic components, and a Printed Circuit Board (PCB) comprising a modem, a processor, and a radio receiver coupled with a probe, the PCB is mechanically fixed to the first waveguide, such that the PCB is mechanically held by the first waveguide, and the probe is located in a position allowing reception of millimeter- waves exiting the first waveguide towards the PCB.
  • the first waveguide that doubles as a box houses the PCB.
  • FIG. 33 illustrates one embodiment of a millimeter-wave communication system.
  • An antenna includes a reflector 1706 and a feed 1703 + 1704.
  • Feed 1703 + 1704 includes a first waveguide 1703, and the first waveguide 1703 doubles as a box 1703' operative to house electronic components.
  • a PCB 1701 includes a modem, a processor, and a radio receiver 1713 coupled with a probe 1712.
  • PCB 1701 is mechanically fixed to the first waveguide 1703, such that PCB 1701 is mechanically held by the first waveguide 1703, and probe 1712 is located in a position allowing reception of millimeter- waves exiting the first waveguide 1703 towards PCB 1701.
  • the first waveguide 1703 that doubles as a box 1703' houses PCB 1701.
  • probe 1712 is located above a laminate waveguide structure 1714 embedded in PCB 1701, and the laminate waveguide structure 1714 together with the first waveguide 1703 create a concatenated waveguide 1714 + 1703 operative to guide millimeter- waves directly onto probe 1712.
  • a second waveguide 1704 is connected in concatenation to the first waveguide 1703, together forming feed 1703 + 1704.
  • the reflector 1706 is mechanically fixed to the first waveguide 1703.
  • the reflector 1706 and the first waveguide 1703 are a single mechanical part.
  • a PCB including a millimeter- wave radio transceiver is mechanically fixed to a an antenna feed carrying millimeter-waves between the radio transceiver and a reflector of an antenna.
  • the PCB is placed inside a protective box and is mechanically fixed to the protective box.
  • the reflector is fixed to the protective box, but the antenna feed is not fixed to the reflector.
  • the antenna feed may slightly move at least in one dimension in respect to the reflector during assembly or after assembly. This movement compensates for manufacturing and assembly tolerances, as well as for thermal and aging effects, and enables a very precise alignment of internal PCB waveguides and/or millimeter- wave probes with the antenna feed.
  • a millimeter-wave communication system includes (i) an antenna comprising a reflector and a feed, the feed comprising a first waveguide, and the feed is not mechanically fixed to the reflector, (ii) a first Printed Circuit Board (PCB) comprising a radio receiver coupled with a probe, the first PCB is mechanically fixed to one end of the feed, and the probe is located in a position allowing reception of millimeter- waves exiting the first waveguide towards the first PCB, and (iii) a box housing the first PCB and part of the feed.
  • the first PCB is mechanically fixed to the box at a first location in the box, forcing the position of the feed.
  • the reflector is fixed to the box at a second location in the box, and the feed is configured to move at least in one dimension in respect to the reflector, resulting in reduction of mechanical stress on the first PCB.
  • FIG. 34 illustrates one embodiment of a millimeter-wave communication system.
  • An antenna includes a reflector 1806 and a feed 1803 + 1804.
  • the feed 1803 + 1804 includes a first waveguide 1803, and the feed 1803 + 1804 is not mechanically fixed to reflector 1806.
  • a first PCB 1802 includes a radio receiver 1813 coupled with a probe 1812.
  • the first PCB 1802 is mechanically fixed to one end of feed 1803 + 1804, and probe 1812 is located in a position allowing reception of millimeter- waves exiting the first waveguide 1803 towards the first PCB 1802.
  • the first PCB 1802 is mechanically fixed to the box 1808 at a first location 1808' in the box, forcing the position of the feed 1803 + 1804.
  • the reflector 1806 is fixed to the box 1808 at a second location 1806' in the box, and the feed 1803 + 1804 moves in respect to reflector 1806, resulting in reduction of mechanical stress on the first PCB 1802.
  • the probe 1812 is located above a laminate waveguide structure 1814 embedded in the first PCB 1802, and the laminate waveguide structure 1814 together with the first waveguide 1803 create a concatenated waveguide 1814 +
  • the waveguide structure 1814 is accurately placed together with the first waveguide
  • a second waveguide 1804 is connected in concatenation to the first waveguide 1803, together forming feed 1803 + 1804.
  • FIG. 35A illustrates one embodiment of various components of a millimeter-wave communication system.
  • an antenna body 2000 manufactured from a single block of material. Such material might be, but is not limited to, a metal or a plastic.
  • the antenna body 2000 encompasses a reflector region 2000a of radio waves, as well as a waveguide region 2000b. The entire system would typically operate at approximately 30GHz and higher in spectrum frequency.
  • FIG. 35B illustrates the same components as illustrated in FIG. 35A, except that in FIG. 35B there is a back-side view. Again, the antenna body 2000 encompasses a reflector region 2000a and a waveguide region 2000b.
  • FIG. 35C illustrates the same components as in FIGS. 35A and 35B, with the same view as in FIG. 35B, except that in FIG. 35C there is the additional component 2001, a substrate which would include electrical components, such as, for example, receiver components, transmitter components, or transceiver components.
  • Elements 2000, 2000a, and 2000b, are unchanged from FIG. 35B.
  • Each of the elements listed as 2000r is a radiator fin region, comprising multiple radiator fins.
  • the assembly presented in FIG. 35C presents a system that is very efficient in the use of space, that has fewer parts and hence lower cost than prior art systems, and that is very efficient in the dissipation of heat.
  • FIG. 36A presents the same components as illustrated in FIGS. 35A and 35B, except this is a down-looking cross-section view.
  • FIG. 36A illustrates the waveguide region 2000b with a cavity in the middle through which the millimeter radio waves are guided.
  • Element 2000a is the reflector region, shown as being on two sides of the millimeter waveguide 2000b.
  • FIG. 36B presents the same view as in FIG. 36A, but FIG. 36B includes more components in this millimeter-wave radio system.
  • substrate 2001 having a laminate waveguide structure 2004 is placed on the waveguide region 2000b, and a back cover 2019 closes the antenna body 2000.
  • a radio frequency integrated chip, "RFIC”, 2002 is placed on the substrate 2001, and is connected to micro strip 2003 (which may also be referenced as trace 2003 ).
  • the very end of 2003 is element 2003, a probe.
  • the element shown as 2005 is a radio receiver or a component of a radio receiver, which is itself comprised of the RFIC 2002 and the microstrip 2003 ⁇ FIG.
  • FIG. 36B also illustrates a second waveguide 2008, which is present in some embodiments. Also in some embodiments is a sub- reflector, 2009, shown here in front of reflector region 2000a. Millimeter waves strike the reflector 2000a and bounce off, hit the sub-reflector 2009 and bounce off into the second waveguide 2008, go through waveguide region 2000b, hit the probe 2003, where they are conveyed as electrical signals to the RFIC 2002.
  • the overall structure presented by FIG. 36B is, relatively simple and relatively inexpensive.
  • FIG. 36C illustrates embodiments in which there is what may be called a "coupling surface", element 2001c.
  • a coupling surface is a layer between the waveguide region 2000b and the substrate 2001.
  • FIGS. 36B and 36C may be compared in that FIG. 36B shows direct connection between substrate 2001 and waveguide region 2000b, whereas FIG. 36C shows only indirect connection, via coupling surface 2001c, between the substrate 2001 and the waveguide region 2000b.
  • FIG. 36D shows the ray path of a millimeter wave.
  • millimeter wave 2020 hits the reflector region 2000a, bounces off reflector region 2000a and hits sub- reflector 2009, bounces off sub-reflector 2009 and enters waveguide region 2000b from a point 2000front in front of the reflector region 2000a, travels through the waveguide region 2000b, passes through the gap in the substrate 2001, enters the region behind the reflector region 2000behind, and reaches the radio receiver 2005.
  • FIG. 37 A and FIG. 37B illustrate one embodiment of components of a millimeter- wave radio system, with a cross-section looking sideway, depicting a different kind of shape for an antenna body.
  • an antenna body, 2000' which has a reflector region 2000a' and a waveguide region 2000b'.
  • Millimeter waves 2020' will be reflected by reflector region 2000a', will travel to a point 2000' front 1 in front of the reflector region 2000a', will enter the waveguide region 2000b', and will be in a position 2000'front2 in front of the reflector region 2000a'.
  • the millimeter waves 2020' will then reach a radio receiver region 2005' located in close proximity to the waveguide region 2000b'.
  • the radio receiver region 2005' includes at least a component of a radio receiver that is placed on a substrate.
  • FIG. 38 illustrates one embodiment of a millimeter-wave radio system, with a cross-section looking down, in which a possible ray path of a millimeter wave is depicted.
  • antenna body 2000 which has a reflector region 2000a", a waveguide region 2000b", a first aperture 2000bal in the waveguide region 2000b", a second aperture 2000ba2 in the waveguide region 2000b", a substrate 2001", a radio receiver 2005” attached to the substrate 2001", and a probe 2003" at one end of the radio receiver 2005".
  • the antenna body 2000" and the substrate 2001" are connected at only one point, which in FIG. 38 is located toward the bottom of FIG. 38, below apertures 2000bal and 2000ba2.
  • the antenna body 2000" and the substrate 2001" could have been connected at a different single point, or may have been connected at multiple points.
  • the connection between antenna body 2000" and substrate 2001" is direct, but the connection could have been indirect, through a coupling surface.
  • An air gap 2000gap between the antenna body 2000" and the substrate 2001” is shown. Millimeter waves 2020" which hit the reflector region 2000a" of the antenna body 2000", bounce off toward a sub-reflector, reflect from the sub-reflector back toward the antenna body 2000", enter the waveguide region 2000b", and continue to the radio receiver 20005" via air gap 2000gap.
  • a millimeter-wave radio system comprising an antenna body 2000 in FIGS. 35 A - 36D inclusive, made from a single piece of material. Said material may be a metal, a plastic, or any other material that would support the form and functionality of an antenna body.
  • the antenna body is comprised of a reflector region 2000a in FIGS. 35 A - 36D inclusive, and a waveguide region 2000b in FIGS. 35A - 36D inclusive.
  • the system also comprises a radio receiver 2005 in FIGS. 36B and 36D, which is mounted on a substrate 2001 in FIGS.
  • the system is operative (i) to reflect millimeter- waves 2020 in FIG. 36D, from the reflector region 2000a toward an aperture of the waveguide region 2000b, then (ii) guide the millimeter-waves 2020 through the waveguide region 2000b, and then (iii) feed the radio receiver 2005 with the millimeter- waves 2020.
  • the substrate 2001 is a printed circuit board.
  • the printed circuit board comprises a laminate waveguide structure 2004 in FIG. 36B, and the printed circuit board is mechanically fixed to the waveguide region 2000b such that the laminate waveguide structure 2004 together with the waveguide region 2000b create a concatenated waveguide operative to guide the millimeter-waves 2020 directly to the radio receiver 2005.
  • the radio receiver 2005 comprises a probe 2003 in FIG. 36B located above the laminate waveguide structure 2004 or inside the laminate waveguide structure 2004, and the probe 2003 is operative to transform the millimeter-waves 2020 into a corresponding electrical signal.
  • the probe 2003 is printed on one lamina of the printed circuit board.
  • the radio receiver 2005 comprises a radio frequency integrated circuit 2002 in FIG. 36B, and the radio frequency integrated circuit 2002 is connected to the probe 2003 via a micro strip 2003' in FIG. 36B.
  • the substrate 2001 is a low temperature co-fired ceramic.
  • the substrate 2001 is mechanically fixed to the waveguide region 2000b such that the substrate 2001 directly touches the waveguide region 2000b at least at one point.
  • the substrate 2001 is mechanically fixed to the waveguide region 2000b via a coupling surface 2001c in FIG. 36C, such that the substrate 2001 does not directly touch the waveguide region 2000b.
  • a coupling surface 2001c in FIG. 36C, it is possible that there is an additional and different point of contact between the substrate 2001 and the waveguide region 2000b, said additional point of contact being direct, but in this fourth alternative embodiment there is at least one indirect contact, in which a coupling surface 2001c is inserted between the substrate 2001 and the waveguide region 2000b.
  • the thickness of the coupling surface 2001c is less than 5 millimeters.
  • the waveguide region 2000b is operative to guide the millimeter- waves 2020 from a location 2000front in FIG. 36D in front of the reflector region 2000a, to a location 2000behind in FIG. 36D behind the reflector region 2000a.
  • the radio receiver 2005 is located behind the reflector region 2000a.
  • the system further comprises a sub-reflector 2009 in FIGS. 36B and 36D located in front of the reflector region 2000a, wherein the sub-reflector 2009 is operative to reflect millimeter- waves 2020, coming from the reflector region 2000a, toward the aperture, thereby implementing a Cassegrain antenna.
  • the sub- reflector 2009 is connected to the waveguide region 2000b via a second waveguide 2008 in FIG. 36B, and the second waveguide 2008 together with the waveguide region 2000b form a feed.
  • the waveguide region 2000b' in FIG. 37 A is operative to guide the millimeter- waves 2020' in FIG. 37B from a first location 2000'frontl in FIG. 37A in front of the reflector region 2000a' in FIG. 37A, to a second location 2000'front2 in FIG. 37A in front of the reflector region 2000a' .
  • a radio receiver located in a radio receiver region 2005' in FIG. 37B, is located in front of the reflector region 2000a', thereby implementing a front fed reflector antenna.
  • the antenna body 2000 doubles as part of a box 2000 + 2019 in FIG. 36B, and the box 2000 + 2019 is operative to house electrical components such as radio receiver 2005.
  • the part of the box 2000 comprises a radiator fins region 2000r in FIG. 35C operative to remove heat at least from the radio receiver 2005, and the radio receiver 2005 is thermally coupled to the part of the box 2000 at least via the waveguide region 2000b and the substrate 2001.
  • the reflector region 2000a is operative to focus the millimeter-waves 2020 toward the aperture.
  • the antenna body 2000 comprised of a single block of material is formed using metal injection molding.
  • the antenna body 2000 comprised of a single block of material is formed using a milling machine.
  • the antenna body 2000 comprised of a single block of material is made from aluminum or magnesium.
  • a millimeter-wave radio system comprising an an antenna body 2000" in FIG. 38 made from a single block of material, said antenna body 2000” comprising a reflector region 2000a" in FIG. 38 and a waveguide region 2000b" in FIG. 38 having first 2000bal in FIG. 38 and second 2000ba2 in FIG. 38 apertures.
  • the millimeter-wave radio system also comprises a radio receiver 2005" in FIG. 38 mounted on a substrate 2001" in FIG. 38, wherein the substrate 2001" is mechanically fixed to the antenna body 2000", such that (i) the substrate 2001” is mechanically held by the antenna body 2000", and (ii) the radio receiver 2005" is placed directly behind the first aperture 2000bal.
  • the system is operative to (i) reflect millimeter- waves 2020" from the reflector region 2000a" toward the second aperture 2000ba2, then (ii) guide the millimeter-waves 2020" through the waveguide region 2000b", and then (iii) feed the radio receiver 2005" with the millimeter-waves 2020" exiting from the first aperture 2000bal.
  • the radio receiver 2005" comprises a probe 2003" in FIG. 38.
  • the substrate 2001" is mechanically fixed to the antenna body 2000" such that (i) the probe 2003" is located less than 1 millimeter behind the first aperture 2000bal, and (ii) the probe 2003" is separated from the first aperture 2000bal by an air gap 2000gap in FIG. 38.
  • a millimeter- wave radio system comprising a part of a box 2000 made from a single block of material, in which the part of the box comprises a reflector region 2000a and a waveguide region 2000b.
  • the system also comprises a radio receiver 2005 mounted on a substrate 2001, wherein the substrate 2001 is mechanically and thermally coupled to the waveguide region 200b.
  • the part of the box is operative to (i) guide millimeter- waves 2020 from the reflector region 2000a to the waveguide region 2000b, and from the waveguide region 200b to the radio receiver 2005, and (ii) remove heat from at least the radio receiver 2005.
  • the substrate 2001 is mechanically and thermally fixed to the waveguide region such that the substrate 2001 directly touches the waveguide region 2000b at least at one point.
  • the substrate 2001 is mechanically and thermally fixed to the waveguide region 2000b via a coupling surface 2001c in FIG. 36C, such that the substrate 2001 does not necessarily directly touch the waveguide region 2000b.
  • the part of the box further comprises a radiator fins region 2000r operative to remove heat from the part of the box.
  • FIG. 39 is a flow diagram illustrating one method for focusing and guiding millimeter- waves in a millimeter- wave radio system.
  • step 2101 the system reflecting millimeter- waves 2020 from a reflector region 2000a of an antenna body 2000 toward an aperture of a waveguide region 2000b of said antenna body 2000.
  • step 2102 the system guiding the millimeter-waves 2020 through the waveguide region 2000b.
  • step 2103 the system feeding said millimeter- waves 2020 to a radio receiver 2005 mounted on the waveguide region 2000b.
  • FIG. 40 is a flow diagram illustrating one method for removing heat from a millimeter- wave radio system.
  • a radio receiver module 2005 thermally coupled to a waveguide region 2000b of an antenna body 2000, generating heat.
  • the system conducting the heat via the waveguide region 2000b to a reflector region 2000a of said antenna body.
  • the system radiating the heat from the reflector region 2000a to surrounding air.
  • the method further comprises the system conducting the heat via the waveguide region 2000b to a radiator fin region 2000r of said antenna body 2000, and the system radiating the heat from the reflector region 2000a to surrounding air.
  • the method further comprises the system conducting the heat via the reflector region 2000a to a radiator fin region 2000r of said antenna body 2000, and the system radiating the heat from the radiator fin region 2000r to surrounding air.

Landscapes

  • Waveguides (AREA)

Abstract

La présente invention porte sur un système radio à onde millimétrique compact qui comprend un corps d'antenne ayant une région de réflecteur et une région de guide d'onde toutes faites d'une unique pièce de matière, et un récepteur radio qui est monté sur un substrat qui est mécaniquement fixé à et maintenu par la région de guide d'onde. Le système présente une solution compacte, relativement peu coûteuse et de dissipation thermique relativement efficace pour recevoir et émettre des ondes millimétriques.
PCT/IB2013/054924 2012-06-20 2013-06-16 Systèmes radio à onde millimétrique compacts et procédés associés WO2013190442A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261661954P 2012-06-20 2012-06-20
US61/661,954 2012-06-20

Publications (1)

Publication Number Publication Date
WO2013190442A1 true WO2013190442A1 (fr) 2013-12-27

Family

ID=49768200

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2013/054924 WO2013190442A1 (fr) 2012-06-20 2013-06-16 Systèmes radio à onde millimétrique compacts et procédés associés

Country Status (1)

Country Link
WO (1) WO2013190442A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016055793A1 (fr) * 2014-10-10 2016-04-14 Cambium Networks Ltd Système d'antenne à large bande à base d'antenne à plaque
JP2016225801A (ja) * 2015-05-29 2016-12-28 三菱電機株式会社 導波管マイクロストリップ線路変換器
CN107978846A (zh) * 2017-11-21 2018-05-01 锐捷网络股份有限公司 一种天线、微波网桥及天线对准方法
JP6345371B1 (ja) * 2017-09-13 2018-06-20 三菱電機株式会社 誘電体フィルタ
CN109301436A (zh) * 2018-09-04 2019-02-01 中国电子科技集团公司第二十九研究所 一种自适应波导长度偏差的天线连接结构及方法
CN111755812A (zh) * 2019-03-28 2020-10-09 电连技术股份有限公司 天线模组及终端
EP3637623A4 (fr) * 2017-04-20 2021-01-06 Fujikura Ltd. Dispositif de communication radio et carte
CN114050420A (zh) * 2021-11-29 2022-02-15 南京航空航天大学 一种散热-吸波一体的无源频率选择表面吸波器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050046011A1 (en) * 2003-07-07 2005-03-03 Board Of Regents, The University Of Texas System System, method and apparatus for improved electrical-to-optical transmitters disposed within printed circuit boards
US20110309899A1 (en) * 2010-06-20 2011-12-22 Siklu Communication ltd. Accurate millimeter-wave antennas and related structures
US20120050125A1 (en) * 2010-08-31 2012-03-01 Siklu Communication ltd. Systems for interfacing waveguide antenna feeds with printed circuit boards
US20120256796A1 (en) * 2010-08-31 2012-10-11 Siklu Communication ltd. Compact millimeter-wave radio systems and methods

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050046011A1 (en) * 2003-07-07 2005-03-03 Board Of Regents, The University Of Texas System System, method and apparatus for improved electrical-to-optical transmitters disposed within printed circuit boards
US20110309899A1 (en) * 2010-06-20 2011-12-22 Siklu Communication ltd. Accurate millimeter-wave antennas and related structures
US20120050125A1 (en) * 2010-08-31 2012-03-01 Siklu Communication ltd. Systems for interfacing waveguide antenna feeds with printed circuit boards
US20120256796A1 (en) * 2010-08-31 2012-10-11 Siklu Communication ltd. Compact millimeter-wave radio systems and methods

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016055793A1 (fr) * 2014-10-10 2016-04-14 Cambium Networks Ltd Système d'antenne à large bande à base d'antenne à plaque
US9716320B2 (en) 2014-10-10 2017-07-25 Cambium Networks Limited Patch antenna-based wideband antenna system
CN107004940A (zh) * 2014-10-10 2017-08-01 新生组织网络有限公司 基于贴片天线的宽带天线系统
JP2016225801A (ja) * 2015-05-29 2016-12-28 三菱電機株式会社 導波管マイクロストリップ線路変換器
US11095019B2 (en) 2017-04-20 2021-08-17 Fujikura Ltd. Radio communication device and board
EP3637623A4 (fr) * 2017-04-20 2021-01-06 Fujikura Ltd. Dispositif de communication radio et carte
JPWO2019053972A1 (ja) * 2017-09-13 2019-12-26 三菱電機株式会社 誘電体フィルタ、アレーアンテナ装置
WO2019053972A1 (fr) * 2017-09-13 2019-03-21 三菱電機株式会社 Filtre diélectrique, dispositif d'antenne réseau
WO2019053823A1 (fr) * 2017-09-13 2019-03-21 三菱電機株式会社 Filtre dielectrique
JP6345371B1 (ja) * 2017-09-13 2018-06-20 三菱電機株式会社 誘電体フィルタ
CN107978846B (zh) * 2017-11-21 2020-01-21 锐捷网络股份有限公司 一种天线、微波网桥及天线对准方法
CN107978846A (zh) * 2017-11-21 2018-05-01 锐捷网络股份有限公司 一种天线、微波网桥及天线对准方法
CN109301436A (zh) * 2018-09-04 2019-02-01 中国电子科技集团公司第二十九研究所 一种自适应波导长度偏差的天线连接结构及方法
CN111755812A (zh) * 2019-03-28 2020-10-09 电连技术股份有限公司 天线模组及终端
CN114050420A (zh) * 2021-11-29 2022-02-15 南京航空航天大学 一种散热-吸波一体的无源频率选择表面吸波器

Similar Documents

Publication Publication Date Title
US9774076B2 (en) Compact millimeter-wave radio systems and methods
US8674885B2 (en) Systems for interfacing waveguide antenna feeds with printed circuit boards
US8674892B2 (en) Accurate millimeter-wave antennas and related structures
WO2013190442A1 (fr) Systèmes radio à onde millimétrique compacts et procédés associés
US9270005B2 (en) Laminate structures having a hole surrounding a probe for propagating millimeter waves
US9577340B2 (en) Waveguide adapter plate to facilitate accurate alignment of sectioned waveguide channel in microwave antenna assembly
US9515385B2 (en) Coplanar waveguide implementing launcher and waveguide channel section in IC package substrate
EP2500978B1 (fr) Transition de guide d'onde
WO2011030277A2 (fr) Interfaces de puce de radiofréquence (rfic) et structures d'onde millimétrique
US20130278349A1 (en) Enhancing operation of laminate waveguide structures using an electrically conductive fence
AU2011218651B2 (en) Leadframe package with integrated partial waveguide interface
US20130104387A1 (en) On pcb dielectric waveguide
US9419341B2 (en) RF system-in-package with quasi-coaxial coplanar waveguide transition
US8766855B2 (en) Microstrip-fed slot antenna
US9088058B2 (en) Waveguide interface with a launch transducer and a circular interface plate
US8917151B2 (en) Transition between a laminated PCB and a waveguide through a cavity in the laminated PCB
US9019033B2 (en) Contactless connector
IL270826B (en) Broadband waveguide launch designs on a single layer printed circuit board
EP3695457A1 (fr) Interposeur entre un substrat de boîtier microélectronique et un connecteur de guide d'ondes diélectrique
WO2014116420A1 (fr) Connecteur sans contact
WO2013190437A1 (fr) Systèmes et procédés pour structures stratifiées à ondes de l'ordre du millimètre
US20130127563A1 (en) High frequency, high bandwidth, low loss microstrip to waveguide transition
US20120242427A1 (en) High-frequency conversion circuit
US10325850B1 (en) Ground pattern for solderability and radio-frequency properties in millimeter-wave packages
CN114696873A (zh) 太赫兹载波发送装置、接收装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13806766

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13806766

Country of ref document: EP

Kind code of ref document: A1