WO2021036779A1 - 一种腔体式移相器 - Google Patents

一种腔体式移相器 Download PDF

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Publication number
WO2021036779A1
WO2021036779A1 PCT/CN2020/108405 CN2020108405W WO2021036779A1 WO 2021036779 A1 WO2021036779 A1 WO 2021036779A1 CN 2020108405 W CN2020108405 W CN 2020108405W WO 2021036779 A1 WO2021036779 A1 WO 2021036779A1
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WO
WIPO (PCT)
Prior art keywords
cavity
radio frequency
frequency circuit
circuit board
phase shifter
Prior art date
Application number
PCT/CN2020/108405
Other languages
English (en)
French (fr)
Inventor
吴碧群
张鹏
孙丹
Original Assignee
广东博纬通信科技有限公司
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Filing date
Publication date
Application filed by 广东博纬通信科技有限公司 filed Critical 广东博纬通信科技有限公司
Publication of WO2021036779A1 publication Critical patent/WO2021036779A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/18—Phase-shifters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/207—Hollow waveguide filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
    • H01Q3/32—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by mechanical means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/02—Soldered or welded connections

Definitions

  • the invention relates to the technical field of wireless communication, in particular to a cavity type phase shifter.
  • the electronically adjustable antenna is one of the key equipment of the coverage network
  • the phase shifter is the core component of the electronically adjustable antenna.
  • the performance of the phase shifter directly determines the performance of the electronically adjustable antenna, and thus affects In terms of network coverage quality, the importance of phase shifters in the field of mobile base station antennas is self-evident.
  • Most of the mainstream phase shifters are developed using the "cavity + radio frequency circuit + sliding medium attached to the upper and lower surfaces of the radio frequency circuit".
  • the internal medium changes the signal propagation rate in the phase shifter, thereby making the flow
  • the signal output by the phase shifter forms a continuous linear phase difference, so as to achieve the purpose of adjusting the downward tilt angle through the phase shifter.
  • the existing phase shifter cavity is mainly designed in one piece, and the one piece cavity avoids screw connection with potential sources of intermodulation, so it is highly praised in the industry, but there are still many drawbacks in the realization of the scheme.
  • the patented solution with the patent name "cavity type microwave device" (publication number CN104037475B) introduces a wiring groove, and the wiring groove is provided with a first through hole (ie wiring hole) for the transmission cable to pass through and enter the cavity where the radio frequency line is located. ), and the operation hole (welding hole) arranged on the package wall where the non-wiring groove is located.
  • This patented solution also has some drawbacks: for the first time, regardless of the inclination angle between the axis of the first through hole and the longitudinal direction of the cavity, the transmission cable will inevitably be bent, which is easy to cause the stress of the solder joints of the outer conductor of the cable and form intermodulation.
  • Hidden danger secondly, the first through hole is arranged on the uneven wiring groove, which is difficult to process and the processing cost is relatively high, and because of the large number of card slots that penetrate into the interior, it is easy to cause mechanical problems in the cavity where the RF circuit is located. The burr remains, forming a hidden danger of intermodulation; again, the setting of the wiring groove also limits the wiring of the transmission cable outside the phase shifter.
  • the transmission cable can only be routed in the horizontal plane where the wiring groove is located, in order to avoid the transmission cable's too small bending radius Bending, it is necessary to leave enough space between the phase shifters during the antenna layout, which often limits the realization of further miniaturization of the antenna width; finally, the sliding medium needs to be installed in the cavity with the radio frequency circuit before the outer conductor of the transmission cable is welded In the body, there is a hidden danger of thermal deformation of the sliding medium due to the high temperature generated by the heating of the soldering operation, which affects the electrical performance, and also increases the friction of the medium sliding, affecting the realization of the phase adjustment function of the phase shifter.
  • the present invention provides a phase shifter that is small in size, light in weight, does not require screw connection, and further optimizes the existing phase shifter in terms of mechanical processing, production and assembly technology, and electrical performance, so that it can be manufactured
  • the processing is more convenient, the processing cost is lower, the size is smaller, and the electrical performance is better.
  • the present invention provides a cavity-type phase shifter, including a cavity and a radio frequency circuit board arranged in the cavity; the cavity has a plurality of packaging walls, and the cavity has at least one cavity built therein; At least one wiring groove is provided on at least one packaging wall parallel to the surface of the radio frequency circuit board, the wiring groove is used to place a transmission cable, and the wiring groove is provided with an operation hole for welding the transmission cable core wire; The transmission cable is routed along the wiring groove and passed through the operation hole on the wiring groove to be welded to the radio frequency circuit board.
  • the cavity is formed by extrusion molding or broaching of aluminum alloy.
  • the cavity is elongated, and at least one of the two end faces of the cavity along the longitudinal direction is open without a packaging wall, and the opening is used for mounting the radio frequency circuit board. Into and connected with external control components.
  • the cavity is provided with at least a pair of protruding tongues on both sides along its longitudinal direction to facilitate quick installation of the cavity.
  • the cavity is defined by two upper and lower packaging walls parallel to the surface of the radio frequency circuit board and two left and right packaging walls parallel to the vertical surface of the radio frequency circuit board.
  • the inner walls of the left and right packaging walls parallel to the vertical surface of the radio frequency circuit board are provided with card slots for fixing the radio frequency circuit board or the insulating support of the radio frequency circuit board, and the card slots are used to determine the position of the radio frequency circuit The height of the cavity.
  • one of the two packaging walls parallel to the surface of the radio frequency circuit board is provided with at least one wiring groove, and the center planes of the multiple wiring grooves are parallel to each other and perpendicular to the packaging wall where the wiring groove is located.
  • At least one wiring groove is provided on the two packaging walls parallel to the surface of the radio frequency circuit board, and the center planes of the multiple wiring grooves are parallel to each other and perpendicular to the packaging wall where the wiring groove is located.
  • the wiring groove is connected to the outer conductor of the transmission cable by soldering and solidified and positioned.
  • the cross section of the wiring groove is composed of a plurality of planes and a plurality of arcs, so as to retain enough solder during soldering to ensure the welding strength of the outer conductor of the transmission cable and avoid the influence caused by the bending of the wiring.
  • the operation holes are arranged on the wiring groove, and correspond to the number and positions of the feeding points on the radio frequency circuit board along the length of the wiring groove.
  • the operation hole allows the inner conductor of the transmission cable to pass through and enter the cavity to be soldered to the radio frequency circuit board.
  • the radio frequency circuit board is a phase shifter circuit, and when the radio frequency circuit board is a PCB radio frequency strip line, it is directly inserted into the card slot in the cavity.
  • the radio frequency circuit board is a phase shifter circuit, and when the radio frequency circuit board is a thin metal plate radio frequency strip line, it is inserted into the card slot in the cavity through an insulating support.
  • the wiring groove is arranged on the packaging wall parallel to the radio frequency circuit, and the wiring groove is arranged on different packaging walls of the cavity (preferably on the two packaging walls parallel to the surface of the radio frequency circuit board), and the transmission
  • the inner conductor of the cable is soldered to the radio frequency circuit through the operation hole set on the wiring groove, allowing the outer conductor of the transmission cable to be soldered and connected to the cavity wiring groove, which effectively prevents the high temperature caused by the outer conductor of the transmission cable.
  • the thermal deformation caused by the sliding medium ensures the reliable realization of the phase adjustment function of the phase shifter; at the same time, the size of the phase shifter is minimized, and the weight of the phase shifter is lighter and the cost is lower.
  • the cross section of the cavity wiring groove of the present invention is composed of multiple planes and several arc surfaces. During soldering, enough solder can be reserved to ensure the welding strength of the outer conductor of the transmission cable, avoid the influence caused by the bending of the wiring, and further avoid the bending of the wiring. The hidden danger of passive intermodulation introduced by solder joint stress.
  • the mechanical processing boundary of the invention is very simple, easy to remove the burrs of subsequent mechanical processing, and avoids the hidden danger of passive intermodulation caused by the burrs.
  • Fig. 1 is a perspective view of the phase shifter of the first embodiment of the invention patent
  • Fig. 2 is a cross-sectional view taken along the line A-A of the phase shifter shown in Fig. 1;
  • Figure 3 is a cross-sectional view of the wiring groove
  • Figure 4 is a schematic diagram of the solder connection form of the outer conductor of the transmission cable in the wiring groove
  • Figure 5 is a schematic diagram of a transmission cable
  • FIG. 6 is a perspective view of another implementation of the phase shifter of the first embodiment of the present invention.
  • Fig. 7 is a three-dimensional view of a four-port phase shifter according to a second embodiment of the present invention.
  • FIG. 8 is a perspective view of another implementation of the four-port phase shifter according to the second embodiment of the present invention.
  • Fig. 9 is a perspective view of the cavity shown in Fig. 8.
  • 21-The cavity described in Example 2 22-The radio frequency circuit board described in Example 2, 23-The sliding medium described in Example 2, 24-Transmission cable, 211-The upper cavity of the cavity, 212-The lower cavity of the cavity , 213-wiring trough, 214-operation hole, 215-protruding tongue, 216-transmission cable sheath wiring trough, 221-radio frequency circuit board feed point, 241-transmission cable sheath, 242-transmission cable outer conductor, 243- Transmission cable core wire.
  • the cavity type phase shifter of the present invention includes a cavity and a radio frequency circuit board arranged in the cavity.
  • the cavity adopts aluminum alloy extrusion molding or broaching molding, which is roughly rectangular parallelepiped, and has a plurality of packaging walls inside and defined by the packaging walls for accommodating the radio frequency circuit board and other related components (such as The cavity of the sliding medium, etc.); on the outside, at least one of the two end faces along the longitudinal direction is not provided with an opening in the packaging wall, and the opening is used for the radio frequency circuit board to be loaded and connected with the external control element Are connected to each other, and at least a pair of protruding tongues are provided on both sides of the longitudinal direction to facilitate quick installation of the cavity. And generally, for ease of installation, when only a pair of protruding tongues are provided, the protruding tongues must be provided on the packaging wall on the opposite side of the wiring groove.
  • the cavity is defined by two upper and lower packaging walls parallel to the surface of the radio frequency circuit board and two left and right packaging walls parallel to the vertical surface of the radio frequency circuit board.
  • the plurality of cavities are arranged in layers along the upper and lower packaging walls, or left and right along the left and right packaging walls, or arranged in layers along the upper and lower packaging walls and left and right along the left and right packaging walls at the same time , Forming a structure with at least two cavities.
  • the wiring groove is arranged on the upper and lower packaging walls parallel to the surface of the radio frequency circuit board. At least one wiring groove is provided on one of the two packaging walls parallel to the surface of the radio frequency circuit board, or at least one wiring groove is provided on both of the two packaging walls parallel to the surface of the radio frequency circuit board, And the center planes of the multiple wiring grooves are parallel to each other and perpendicular to the packaging wall where the wiring grooves are located. That is, the wiring groove is provided on one of the upper and lower packaging walls of each cavity, or on both of the upper and lower packaging walls of each cavity.
  • a plurality of the wiring grooves may be provided on the upper packaging wall or the lower packaging wall of each cavity, and the center planes of the multiple wiring grooves are parallel to each other and perpendicular to the packaging wall where the wiring grooves are located.
  • the wiring groove is used for placing the transmission cable, and is connected to the outer conductor of the transmission cable by soldering and solidified and positioned.
  • the cross section of the wiring groove is composed of a plurality of planes and a plurality of arcs, which are used to retain enough solder during soldering to ensure the welding strength of the outer conductor of the transmission cable and avoid the influence caused by the bending of the wiring.
  • the size of the cross-sectional dimension of the wiring groove should be flexibly designed by those skilled in the art according to the design and operation requirements.
  • the wiring groove is provided with an operation hole for welding the transmission cable core wire; the transmission cable is routed along the wiring groove and passes through the operation hole on the wiring groove to be connected to the radio frequency circuit board by welding .
  • the operation hole allows the inner conductor of the transmission cable to pass through and enter the cavity to be soldered and connected with the radio frequency circuit, and provides an operation window for the soldering operation.
  • the operation holes are arranged on the wiring groove, and correspond to the number and position of the feed points of the radio frequency circuit along the length direction of the wiring groove.
  • the shape and size of the operation hole can be flexibly designed by those skilled in the art according to operation requirements.
  • the left and right packaging walls in the cavity are provided with clamping slots for fixing the radio frequency circuit board or the insulating support of the radio frequency circuit board.
  • the radio frequency circuit is a phase shifter circuit, which can be a radio frequency strip line based on a printed circuit board (PCB) or a radio frequency strip line made of a thin metal plate.
  • PCB printed circuit board
  • the radio frequency circuit board is a PCB radio frequency strip line
  • the radio frequency circuit is directly inserted into the card slot in the cavity.
  • the radio frequency circuit is a thin metal plate radio frequency strip line, it needs to be inserted into the card slot in the cavity through an insulating support.
  • the cavity type phase shifter 1 of the present invention includes a cavity 11, a radio frequency circuit 12 built in the cavity, and a sliding medium 13 attached to the radio frequency circuit and sliding on its surface.
  • the present invention also discloses the transmission cable 14 assembled with the phase shifter, and other embodiments can also be described by the transmission cable.
  • the cavity 11 is integrally formed by aluminum alloy extrusion or broaching and other molding methods, the cavity has a four-sided packaging wall (upper The package wall 116, the lower package wall 117, the left package wall 118, and the right package wall 119).
  • the packaging wall defines a cavity (not numbered) for accommodating the radio frequency circuit board and other related components (such as a sliding medium, etc.).
  • At least one of the two end surfaces (111, 112) along the longitudinal direction is not provided with an opening in the packaging wall, and the opening is used for the radio frequency circuit board and other related components (such as sliding media, etc.) ) Is installed and connected with an external control element (not shown), and at least a pair of protruding tongues 115 are provided on both sides of the longitudinal direction to facilitate quick installation of the cavity. And generally, for ease of installation, when only a pair of protruding tongues 115 are provided, the protruding tongues must be provided on the packaging wall on the opposite side of the wiring groove 113.
  • the wiring groove 113 is provided on one of the upper and lower packaging walls (116, 117) parallel to the surface of the radio frequency circuit board 12, or on both of the upper and lower packaging walls of each cavity Above.
  • the wiring groove 113 is used to place the transmission cable 14 and is connected to the outer conductor 142 of the transmission cable by solder 15 and solidified and positioned.
  • the wiring groove cross section is composed of multiple planes (132, 134, 136, and 138) and several arc surfaces (131, 133, 135, 137, and 139), and relative to the outer surface of the package wall where the wiring groove is located, the wiring groove It is in the shape of an inverted button with a small outside and a large inside, which is used to retain enough solder 15 during soldering to ensure the soldering strength of the outer conductor 142 of the transmission cable and avoid the influence of bending of the wiring.
  • the wiring groove 113 is provided with an operation hole 114 for welding the transmission cable core wire 143; the transmission cable 14 is routed along the wiring groove 113 and passes through the operation hole 114 on the wiring groove and the The feeding point 122 of the radio frequency circuit board is welded and connected.
  • the operating holes 114 are arranged on the wiring groove 113 and are arranged in a one-to-one correspondence according to the number and position of the radio frequency circuit feeding points 122 along the length direction of the wiring groove.
  • the radio frequency circuit is used to feed power.
  • the position of the point 122 is the center of the circle, and the diameter of the operating hole is generally not less than 10 mm, and its shape and size can be flexibly designed by those skilled in the art according to operating requirements.
  • the left and right packaging walls (118, 119) in the cavity 11 are provided with card slots (not numbered) for fixing the radio frequency circuit board (12) or the radio frequency circuit board insulating support (not shown).
  • the radio frequency circuit 12 is a strip circuit printed on a substrate such as a PCB board, where 121 is a substrate, which is a double-sided printed PCB board, and 120 is a radio frequency printed on the substrate 121.
  • the circuit unit, the upper and lower circuit units are connected by a number of vias (not shown).
  • the substrate 121 of the radio frequency circuit 12 is inserted into the slot (marked) of the cavity 11, and the substrate 121 is located on the cavity end surface (111, The two ends of 112) are respectively provided with positioning holes (not shown) for clamping and fixing with the insulating support (not shown).
  • the substrate 121 may also be a single-layer PCB board, and the radio frequency circuit 12 may also be a radio frequency strip line made of a thin metal plate.
  • the phase shifter 1 of the present invention includes a sliding medium 13 arranged between the cavity 11 and the radio frequency circuit 12.
  • the shape and size of the sliding medium 13 can be freely designed by those skilled in the art according to the phase adjustment needs of the phase shifter.
  • the selected material is a special engineering plastic, which can be one or more, and the dielectric constant of the plastic ⁇ r > 1.0 , And preferentially require low-loss tangent angle characteristics.
  • the phase shifter 1 can also form an impedance converter.
  • the impedance converter is formed in one or more of the sliding medium 13, the inner packaging wall of the cavity 11 and the radio frequency circuit 12.
  • the sliding medium 13 is controlled by an external force driving element (not shown) installed on it to make a reciprocating linear movement along the longitudinal direction of the cavity, thereby changing the signal propagation rate in the phase shifter 1, and thereby changing the phase of the signal.
  • a phase difference is formed to achieve the purpose of phase shifting.
  • the external force driving element is located at one end of the opening of the cavity 11 and is familiar to those skilled in the art.
  • the sliding medium is generally driven by an electric control device. Therefore, the external force driving element of the sliding medium 13 of the present invention should be It can be matched with other components, and it is best to form a phase shifting drive device.
  • the core wire 143 of the transmission cable 14 is bent into a "Z" shape, and it is attached to the surface of the radio frequency circuit feed point 122 and is electrically connected to the radio frequency circuit by soldering.
  • the outer conductor 141 of the transmission cable can be soldered with the wiring groove 113 in advance, and then the radio frequency circuit board and other related components (such as sliding medium, etc.) can be installed, which can effectively avoid the transmission cable outer conductor 141.
  • the high heat generated during soldering with the wiring groove 113 affects the material of the sliding medium, eliminates the hidden danger of thermal deformation of the sliding medium, and also provides convenience for the maintenance of the phase shifter and the replacement of the radio frequency circuit board and related components.
  • the transmission cable 14 can be parallel according to the geometric relationship between the transmission cable outer conductor 142, the transmission cable sheath 141 and the bending plane where the transmission cable core wire 143 is located (as shown in Fig. 5a) or arranged at an angle (including vertical, as shown in Fig. 5b) or partially parallel and arranged at an angle.
  • FIG. 6 is an embodiment in which the geometrical relationship between the transmission cable outer conductor 142 and the transmission cable sheath 141 relative to the bending plane of the transmission cable core 143 is at an angle.
  • the cavity-type phase shifter of the present invention is a four-port phase shifter 2, including a cavity 21, a radio frequency circuit 22 provided in the cavity 21, located between the cavity 21 and the radio frequency circuit 22 Sliding medium 23.
  • the cavity 21 is integrally formed by molding methods such as aluminum alloy extrusion or broaching, and a cavity (211, 212) that penetrates along the longitudinal direction of the cavity 21 and is arranged in layers along the upper and lower packaging walls is formed inside.
  • the same radio frequency circuit 22 can be provided in the upper cavity 211 and the lower cavity 212, so that the four-port phase shifter 2 is suitable for a single-frequency dual-polarized antenna; it can also be provided with different radio frequency circuits 22 to make the phase shifter 2 Suitable for multi-frequency antennas.
  • the outer side of the cavity 21 is provided with at least a pair of protruding tongues 215 on the left and right packaging walls (not labeled) in the longitudinal direction of the cavity 21 to facilitate quick installation of the cavity.
  • the packaging walls (not labeled) of the upper cavity 211 and the lower cavity 212 of the cavity 21 are provided with wiring grooves 213 extending through the two end faces of the cavity along the longitudinal direction of the cavity 21 for placing the transmission cables 24 and The outer conductor 242 of the transmission cable is connected by soldering.
  • the wiring groove 213 is provided with an operation hole 214 for welding the transmission cable core wire 243; the transmission cable 24 is routed along the wiring groove 213 and passes through the operation hole 214 and the wiring groove 213
  • the feeding point 221 of the radio frequency circuit board is connected by welding.
  • the radio frequency circuit 22 is a circuit with a phase shifting function printed on a double-sided printed circuit board. During assembly, the radio frequency circuit 22 is basically inserted into the slot of the cavity 21 and is paired by an insulating structure. It supports it.
  • the inside of the cavity 21 can be combined into multiple cavities through different arrangements such as left-right arrangement or up-down arrangement or left-right up-and-down arrangement.
  • different radio frequency circuits 22 it can work in different frequency bands and is suitable for multi-frequency antennas.
  • Those skilled in the art can know that a multi-port phase shifter with multiple phase shifter components can be formed in this way, no matter how many phase shifting elements are contained in the phase shifter, and how many ports each phase shifting element contains , Wherein the cavity 21 is integrally formed.
  • the four-port phase shifter 2 also includes a sliding medium 23.
  • the sliding medium 23 is arranged between the cavity 21 and the radio frequency circuit 22.
  • the shape and size of the sliding medium 23 can be freely designed by those skilled in the art according to the phase adjustment needs of the phase shifter.
  • the selected material is a special engineering plastic, which can be one or more, and the dielectric constant of the plastic ⁇ r > 1.0 , And preferentially require low-loss tangent angle characteristics.
  • the phase shifter 2 can also form an impedance converter.
  • the impedance converter is formed in one or more of the sliding medium 23, the inner packaging wall of the cavity 21, and the radio frequency circuit 22.
  • the sliding medium 23 is controlled to make a reciprocating linear movement along the longitudinal direction of the cavity through an external force driving element (not shown) installed on it, thereby changing the signal propagation rate in the phase shifter 2 and thereby changing the phase of the signal.
  • a phase difference is formed to achieve the purpose of phase shifting.
  • the external force driving element is located at one end of the opening of the cavity 21 and is familiar to those skilled in the art.
  • the sliding medium is generally driven by an electric control device. Therefore, the external force driving element of the sliding medium 23 of the present invention should be It can be matched with other components, and it is best to form a phase shifting drive device.
  • the geometric relationship between the transmission cable outer conductor 242 and the transmission cable sheath 241 relative to the bending plane where the transmission cable core 243 is located is at an angle (90° shown in the figure) ), this arrangement can make better use of the layout space of the antenna width and height, and corresponds to the operation holes arranged at both ends of the cavity on the wiring groove.
  • the transmission cable sheath wiring groove 216 is further provided to avoid deformation stress caused by the soldering of the transmission cable outer conductor 242 and the wiring groove 213 due to wiring.
  • arranging the cavity wiring groove on the packaging wall parallel to the radio frequency circuit minimizes the size of the phase shifter, and further reduces the weight and cost of the phase shifter.
  • the radio frequency circuit of the phase shifter can adopt a PCB board or a thin metal plate structure as required, which has greater flexibility.
  • the cavity of the present invention is formed by aluminum alloy extrusion or broaching, has a simple structure, does not require any metal screw fastening connection, is convenient to assemble, and avoids the hidden danger of passive intermodulation introduced by screw fastening.
  • the mechanical processing boundary of the present invention is further simplified, easy to remove the burrs of subsequent mechanical processing, and it is easier to avoid the hidden danger of passive intermodulation caused by the burrs.
  • the cross section of the cavity wiring groove of the present invention is composed of multiple planes and several arc surfaces. During soldering, enough solder can be reserved to ensure the welding strength of the outer conductor of the transmission cable, avoid the influence caused by the bending of the wiring, and further avoid the bending of the wiring. The hidden danger of passive intermodulation introduced by solder joint stress.
  • the inner conductor of the transmission cable is soldered and connected to the radio frequency circuit through the operating hole provided on the wiring groove, which allows the outer conductor of the transmission cable to be soldered and connected to the cavity wiring groove, thereby effectively preventing the tinning of the outer conductor of the transmission cable.
  • the thermal deformation of the sliding medium caused by the high temperature during welding ensures the reliable realization of the phase adjustment function of the phase shifter.
  • the wiring groove is arranged on the packaging wall parallel to the radio frequency circuit, and the wiring groove is arranged on different packaging walls of the cavity (preferably on the two packaging walls parallel to the surface of the radio frequency circuit board), and the transmission
  • the inner conductor of the cable is soldered to the radio frequency circuit through the operation hole set on the wiring groove, allowing the outer conductor of the transmission cable to be soldered and connected to the cavity wiring groove, which effectively prevents the high temperature caused by the outer conductor of the transmission cable.
  • the thermal deformation caused by the sliding medium ensures the reliable realization of the phase adjustment function of the phase shifter; at the same time, the size of the phase shifter is minimized, and the weight of the phase shifter is lighter and the cost is lower.
  • the cross section of the cavity wiring groove of the present invention is composed of multiple planes and several arc surfaces. During soldering, enough solder can be reserved to ensure the welding strength of the outer conductor of the transmission cable, avoid the influence caused by the bending of the wiring, and further avoid the bending of the wiring. The hidden danger of passive intermodulation introduced by solder joint stress.
  • the mechanical processing boundary of the invention is very simple, easy to remove the burrs of subsequent mechanical processing, and avoids the hidden danger of passive intermodulation caused by the burrs.

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  • Waveguide Switches, Polarizers, And Phase Shifters (AREA)

Abstract

本发明提供了一种腔体式移相器，包括腔体及设于所述腔体内的射频电路板；所述腔体具有多个封装壁，在与所述射频电路板表面平行的至少一个封装壁上设置有至少一个布线槽，所述布线槽上设置有供所述传输电缆芯线焊接的操作孔；所述传输电缆沿所述布线槽布线并穿过所述布线槽上的所述操作孔与所述射频电路板焊接连接。本发明将布线槽设置到与射频电路板平行的封装壁上，多个布线槽设置在不同的封装壁上，传输电缆内导体通过操作孔与射频电路锡焊连接作业，允许在传输电缆外导体与腔体布线槽锡焊连接后才进行，从而避免了因传输电缆外导体锡焊时高温对滑动介质造成的热变形影响，保证了移相器相位调节功能的可靠实现；缩小了移相器尺寸，更轻，成本更低。

Description

一种腔体式移相器 技术领域
本发明涉及无线通信技术领域，具体涉及一种腔体式移相器。
背景技术
在移动通信网络覆盖中，电调天线是覆盖网络的关键设备之一，而移相器又是电调天线的最核心部件，移相器性能的优劣直接决定了电调天线性能，进而影响到网络覆盖质量，故移相器在移动基站天线领域的重要性是不言而喻的。主流的移相器大多是采用“腔体+射频线路+依附于射频线路上下表面的滑动介质”方案进行开发，通过内部的介质改变信号在该移相器中的传播速率，由此可使流经该移相器输出的信号形成连续的线性相位差，从而实现通过移相器调整下倾角度的目的。
现有的移相器腔体主要是一体成型设计的，一体成型的腔体避免了存在互调隐患源的螺钉连接，因而受到业内推崇，但在方案实现上仍然存在诸多的弊端。专利名称为“腔体式微波器件”(公开号为CN104037475B)的专利方案引入了布线槽，并在布线槽上设置有供传输电缆穿过进入射频线路所在空腔的第一通孔(即布线孔)，以及布置于非布线槽所在封装壁上的操作孔(焊接孔)。该专利方案也存在一些缺陷：首次，无论其第一通孔轴线与腔体纵长方向的倾角如何，传输电缆都将必不可免的存在弯曲，易于造成电缆外导体焊点应力而形成互调隐患；其次，第一通孔布置在外形不平整的布线槽上，既难加工，加工成本比较高，又因为数量众多且贯穿至内部的卡槽，容易在射频线路所在的空腔内造成机械毛刺残留，形成互调隐患；再次，布线槽的设置也限制 了传输电缆在移相器外部的布线，传输电缆仅能在布线槽所在的水平面内布线，为了避免传输电缆的过小折弯半径弯曲，在天线布局时需要给移相器间留取足够的空间，这也往往限制了天线宽度的进一步小型化的实现；最后，滑动介质需要随射频电路在传输电缆外导体焊接之前装入腔体内，由于锡焊作业加热产生的高温存在导致滑动介质热变形的隐患，影响电气性能，也增大了介质滑动的摩擦力，影响移相器相位调节功能的实现。
发明内容
针对上述问题，本发明提供一种尺寸小、重量轻，无需螺钉连接，并从机械加工、生产组装工艺和电气性能等诸多方面对现有移相器进行进一步优化的移相器，使之制造加工更加方便，加工成本更低，尺寸更小，电气性能更好。
本发明提出一种腔体式移相器，包括腔体及设于所述腔体内的射频电路板；所述腔体具有多个封装壁，且所述腔体内置至少一个空腔；在与所述射频电路板表面平行的至少一个封装壁上设置有至少一个布线槽，所述布线槽用于放置传输电缆，且所述布线槽上设置有供所述传输电缆芯线焊接的操作孔；所述传输电缆沿所述布线槽布线并穿过所述布线槽上的所述操作孔与所述射频电路板焊接连接。
进一步地，所述腔体通过铝合金挤压成型或拉削成型。
进一步地，所述腔体呈长条状，且所述腔体沿纵长方向的两个端面中至少有一个端面不设置封装壁而成开口状，其开口用以供所述射频电路板装入并与外部操控元件相连接。
进一步地，所述腔体沿其纵长方向在其两侧至少设有一对凸舌，以便于腔体的快捷安装。
进一步地，所述空腔由与射频电路板表面平行的上下两个封装壁以及与射频电路板垂直面平行的左右两个封装壁限定而成。
进一步地，在与所述射频电路板垂直面平行的左右两个封装壁的内壁上设置有用以固定射频电路板或射频电路板绝缘支撑件的卡槽，所述卡槽用以确定射频电路在空腔中高度。
进一步地，与所述射频电路板表面平行的两个封装壁的其中一个封装壁上设置有至少一个布线槽，且多个布线槽中心平面相互平行且与布线槽所在封装壁垂直。
进一步地，在与所述射频电路板表面平行的两个封装壁上均设置有至少一个布线槽，且多个布线槽中心平面相互平行且与布线槽所在封装壁垂直。
进一步地，所述布线槽通过焊锡与传输电缆的外导体相互连接并进行固化定位。
进一步地，所述布线槽截面由多个平面和数个弧面组成，用以在焊锡时留存足够的焊锡以保障传输电缆外导体焊接强度，避免布线弯曲造成的影响。
进一步地，所述操作孔设置在布线槽上，并沿布线槽长度方向依据射频电路板上馈电点数量及位置一一对应。
进一步地，所述操作孔允许传输电缆的内导体通过并进入到空腔内与所述的射频电路板相锡焊连接。
进一步地，所述射频电路板为移相器电路，所述射频电路板为PCB射频带状线路时，其直接插入空腔内的卡槽中。
进一步地，所述射频电路板为移相器电路，所述射频电路板为金属薄板射频带状线路时，其通过绝缘支撑件插入空腔内的卡槽中。
本发明的有益效果为：
本发明将布线槽设置到与射频电路平行的封装壁上，并且布线槽设置在所述腔体的不同封装壁上(优选为与所述射频电路板表面平行的两个封装壁上)，传输电缆内导体通过布线槽上设置的操作孔与射频电路锡焊连接作业，允许在传输电缆外导体与腔体布线槽锡焊连接后才进行，从而有效防止了因传输电缆外导体锡焊时高温对滑动介质造成的热变形影响，保证了移相器相位调节功能的可靠实现；同时，最大限度的缩小了移相器的尺寸，使移相器重量更轻、成本更低。
本发明腔体布线槽截面由多个平面和数个弧面组成，在焊锡时可以留存足够的焊锡以保障传输电缆外导体焊接强度，避免布线弯曲造成的影响，进一步也避免了应布线弯曲造成焊点应力所引入的无源互调隐患。
本发明机械加工边界非常简单，易于后续机械加工毛刺的清除，避免了因毛刺引入的无源互调隐患。
附图说明
图1为本发明专利的第一个实施例的移相器立体图；
图2为图1所示移相器的A-A向剖视图；
图3为布线槽截面图；
图4为传输电缆外导体在布线槽中锡焊连接形态示意图；
图5为传输电缆示意图；
图6为本发明的第一个实施例的移相器的另一个实施方式立体图；
图7为本发明的第二个实施例的四端口移相器立体图；
图8为本发明的第二个实施例的四端口移相器的另一个实施方式立体图；
图9为图8所示的腔体立体图。
其中：11-实施例1所述腔体，12-实施例1所述射频电路板，13-实施例1所述滑动介质，14-传输电缆，15-焊锡，111、112-腔体端面，113-布线槽，114-操作孔，115-凸舌，116-上封装壁，117-下封装壁，118-左封装壁，119-右封装壁，120-射频电路单元，121-射频电路板基板，122-射频电路板馈电点，131-布线槽截面第一弧面，132-布线槽截面第一平面，133-布线槽截面第二弧面，134-布线槽截面第二平面，135-布线槽截面第三弧面，136-布线槽截面第三平面，137-布线槽截面第四弧面，138-布线槽截面第四平面，139-布线槽截面第五弧面，141-传输电缆护套，142-传输电缆外导体，143-传输电缆芯线；
21-实施例2所述腔体，22-实施例2所述射频电路板，23-实施例2所述滑动介质，24-传输电缆，211-腔体上空腔，212-腔体下空腔，213-布线槽，214-操作孔，215-凸舌，216-传输电缆护套布线槽，221-射频电路板馈电点，241-传输电缆护套，242-传输电缆外导体，243-传输电缆芯线。
具体实施方式
为了加深对本发明的理解，下面将结合实施例对本发明做进一步详述，其中附图中相同的标号全部指的是相同的部件，本实施例仅用于解释本发明，并不构成对本发明保护范围的限定。此外，如果已知技术的详细描述对于本发明的特征是不必要的，则将其省略。
本发明的腔体式移相器包括腔体及设于所述腔体内的射频线路板。
所述腔体采用铝合金挤压成型或拉削成型，其大致呈长方体状，内置多个封装壁和由所述封装壁限定的、用于容置所述射频电路板及其他相关组件(如 滑动介质等)的空腔；于其外部，沿纵长方向的两个端面中至少有一个端面不设置封装壁成开口状，其开口用以供所述射频电路板装入并与外部操控元件相连接，而在其纵长方向的两侧至少设有一对凸舌，用以便于腔体的快捷安装。且一般地，为便于安装，当只设置一对凸舌时，凸舌须设置在布线槽对侧的封装壁上。
所述空腔由与射频电路板表面平行的上下两个封装壁以及与射频电路板垂直面平行的左右两个封装壁限定而成。
多个所述空腔沿所述上下两个封装壁分层布置，或沿所述左右两个封装壁左右布置，或同时沿上下两个封装壁分层布置和沿左右两个封装壁左右布置，形成至少有两个空腔的结构。
所述布线槽设置在与所述射频电路板表面平行的上下两个封装壁上。与所述射频电路板表面平行的两个封装壁的其中一个封装壁上设置有至少一个布线槽，或者在与所述射频电路板表面平行的两个封装壁上均设置有至少一个布线槽，且多个布线槽中心平面相互平行且与布线槽所在封装壁垂直。即，所述布线槽设置在每一个所述腔体的上下两个封装壁的其中一个封装壁上，或者设置在每一个所述腔体的上下两个封装壁的两者之上。
所述布线槽在每一个所述空腔的上封装壁上或下封装壁上可以设置多个，且多个布线槽中心平面相互平行且与布线槽所在封装壁垂直。
所述布线槽用于放置传输电缆，并通过焊锡与传输电缆的外导体相互连接并进行固化定位。且所述布线槽截面由多个平面和数个弧面组成，用以在焊锡时留存足够的焊锡以保障传输电缆外导体焊接强度，避免布线弯曲造成的影响。布线槽截面尺寸的大小应由本领域技术人员根据设计和操作需要灵活设 计。
所述布线槽上设置有供所述传输电缆芯线焊接的操作孔；所述传输电缆沿所述布线槽布线并穿过所述布线槽上的所述操作孔与所述射频电路板焊接连接。
所述操作孔允许传输电缆的内导体通过并进入到空腔内与所述的射频电路相锡焊连接，并提供锡焊作业的操作窗口。所述操作孔布置在布线槽上，并沿布线槽长度方向依据射频电路馈电点数量及位置一一对应。
为便于传输电缆和所述射频电路的连接、维护等操作，所述操作孔的形状、大小可以由本领域技术人员根据操作需要灵活设计。
所述空腔内的左右封装壁上设置有用以固定射频电路板或射频电路板绝缘支撑件的卡槽。
所述空腔内的卡槽用以确定射频电路板在空腔中高度。作为本领域技术人员所熟知，所述射频电路为移相器电路，其可以是基于印刷线路板(PCB)的射频带状线路，也可以是有金属薄板制作的射频带状线路。
所述射频电路板为PCB射频带状线路时，其直接插入空腔内的卡槽中。所述射频电路为金属薄板射频带状线路时，其需要通过绝缘支撑件插入空腔内的卡槽中。
实施例一
请参考图1，本发明的腔体式移相器1，包括腔体11，内置于所述腔体的射频电路12，附着于所述射频电路并于其表面滑动的滑动介质13。为了更好地阐述本发明的结构和原理，本发明还揭示与该移相器组装在一起的传输电缆14，其他实施例同样可以通过传输电缆来说明。
请参考图1，结合图2、图3和图4、图5，所述腔体11通过铝合金挤压或拉削等成型方式一体成型，所述腔体具有四个面的封装壁(上封装壁116、下封装壁117、左封装壁118和右封装壁119)。封装壁限定形成用于容置所述射频电路板及其他相关组件(如滑动介质等)的空腔(未标号)。于腔体外部，沿纵长方向的两个端面中至少有一个端面(111、112)不设置封装壁成开口状，其开口用以供所述射频电路板及其他相关组件(如滑动介质等)装入并与外部操控元件(未示出)相连接，而在其纵长方向的两侧至少设有一对凸舌115，用以便于腔体的快捷安装。且一般地，为便于安装，当只设置一对凸舌115时，凸舌须设置在布线槽113对侧的封装壁上。布线槽113设置在与所述射频电路板12表面平行的上下两个封装壁(116、117)的其中一个封装壁上，或者设置在每一个所述空腔的上下两个封装壁的两者之上。所述布线槽113用于放置传输电缆14，并通过焊锡15与传输电缆的外导体142相互连接并进行固化定位。且所述布线槽截面由多个平面(132、134、136和138)和数个弧面(131、133、135、137和139)组成，且相对于布线槽所在封装壁外表面，布线槽呈外小内大的倒扣状，用以在锡焊时留存足够的焊锡15以保障传输电缆外导体142的焊接强度，避免布线弯曲造成的影响。所述布线槽113上设置有供所述传输电缆芯线143焊接的操作孔114；所述传输电缆14沿所述布线槽113布线并穿过所述布线槽上的所述操作孔114与所述射频电路板馈电点122焊接连接。
应当知道，所述操作孔114布置在布线槽113上并沿布线槽长度方向依据射频电路馈电点122的数量及位置一一对应设置，且一般地，根据工程实践经验，以射频电路馈电点122的位置为圆心，操作孔的直径大小一般不小于 10mm，其形状、大小可以由本领域技术人员根据操作需要灵活设计。
进一步结合图2，在腔体11内左右封装壁(118、119)上设置有用以固定射频电路板(12)或射频电路板绝缘支撑件(未示出)的卡槽(未标号)。
本实施例中，所述射频电路12为基于PCB板之类的基板印制的带状电路，其中121为基板，其为双面印制的PCB板，120为印制在基板121上的射频电路单元，上、下层电路单元用若干过孔(未示出)相连。此外，为了防止使用过程中基板121在所述腔体11中的位置变动，射频电路12的基板121插入腔体11的卡槽(为标号)内，并在基板121位于腔体端面(111、112)的两端分别设置有与绝缘支撑件(未示出)卡接固定用的定位孔(未示出)。在其他实施方式中，所述基板121也可以为单层PCB板，所述射频电路12还可以是金属薄板制作的射频带状线路。
请参考图1和图2，如前所述，本发明的移相器1包括设于所述腔体11与所述射频电路12之间的滑动介质13。所述滑动介质13其形状、大小可以由本领域技术人员根据移相器相位调节需要自由设计，所选用的材料为特种工程塑料，可以是一种或多种，塑料的介电常数ε r＞1.0，并优先要求具有低损耗正切角特性。为了实现良好的电路性能，所述移相器1还可形成阻抗变换器。所述阻抗变换器在滑动介质13、腔体11内部封装壁和射频电路12三者之一或更多中形成。
所述滑动介质13通过安装在其上的外力驱动元件(未示出)控制沿腔体纵长方向做往复直线运动，从而改变移相器1中的信号传播速率，进而改变该信号的相位，形成相位差，达到移相的目的。所述外力驱动元件位于所述腔体11开口的一端，且为本领域技术人员所熟悉的，所述滑动介质一般通过电动控 制装置实现驱动，因此，本发明的滑动介质13的外力驱动元件应能与其他部件相配合，最好形成移相驱动装置。
请参考图5，所述传输电缆14的芯线143经折弯呈“Z”型，且其与射频电路馈电点122表面相贴合并通过锡焊与射频电路实现电连接。在工程实践上，可以先将传输电缆外导体141与布线槽113预先锡焊，而后将射频电路板及其他相关组件(如滑动介质等)装入，这既可以有效避免因传输电缆外导体141与布线槽113锡焊时产生的高热对滑动介质材质的影响，消除滑动介质的热变形隐患，也可以为移相器的维护、射频电路板及其相关组件的更换提供便利。
请参考图5，为了便于天线的布线，可以将传输电缆14可以根据传输电缆外导体142、传输电缆护套141相对于传输电缆芯线143所在的折弯平面间的几何关系呈平行(如图5a所示)或呈一夹角(包括垂直，如图5b所示)方式布置或部分呈平行部分呈一夹角方式布置。
请参考图6，即为本实施例的一个传输电缆外导体142、传输电缆护套141相对于传输电缆芯线143所在的折弯平面间的几何关系呈夹角的实施方式。
实施例二
请参考图7，本发明的腔体式移相器为四端口移相器2，包括腔体21，设于所述腔体21内的射频电路22，位于腔体21与射频电路22之间的滑动介质23。
所述腔体21通过铝合金挤压或拉削等成型方式一体成型，内部形成有沿腔体21纵长方向贯通的沿所述上下两个封装壁分层布置的空腔(211，212)。上空腔211和下空腔212中可设置相同的射频电路22，使该四端口移相器2适 用于单频双极化天线；其也可以设置不同的射频电路22，使该移相器2适用于多频天线。
所述腔体21的外侧在其纵长方向的左右两个封装壁(未标号)上设置有至少一对凸舌215，用以便于腔体的快捷安装。
所述腔体21的上空腔211和下空腔212的封装壁(未标号)上设于沿腔体21纵长方向贯通腔体两个端面的布线槽213，用以放置传输电缆24并与传输电缆外导体242通过锡焊连接。所述布线槽213上设置有供所述传输电缆芯线243焊接的操作孔214；所述传输电缆24沿所述布线槽213布线并穿过所述布线槽213上的所述操作孔214与所述射频电路板馈电点221焊接连接。
在腔体21内的上空腔211和下空腔212的左右封装壁上，各设置有用以固定所述射频电路22的卡槽(未标号)。所述射频电路22为基于双面印制电路板印制的、具有移相功能的电路，装配时，所述承载射频电路22的基本插入腔体21的卡槽内，并由绝缘结构件对其进行支撑。
腔体21内部可以通过左右排列或上下排列或左右上下排列等不同排列方式组合成多个空腔，通过使用不同的射频电路22，可工作于不同频段，适用于多频天线。本领域内技术人员可以知晓，按此方式同理可组成具有多个移相器组件的多端口移相器，不管该移相器内含有多少移相元件，每个移相元件内含多少端口，其中腔体21均一体成型。
如前所述，该四端口移相器2还包括滑动介质23。所述滑动介质23设于腔体21与射频电路22之间。所述滑动介质23其形状、大小可以由本领域技术人员根据移相器相位调节需要自由设计，所选用的材料为特种工程塑料，可以是一种或多种，塑料的介电常数ε r＞1.0，并优先要求具有低损耗正切角特 性。为了实现良好的电路性能，所述移相器2还可形成阻抗变换器。所述阻抗变换器在滑动介质23、腔体21内部封装壁和射频电路22三者之一或更多中形成。
所述滑动介质23通过安装在其上的外力驱动元件(未示出)控制沿腔体纵长方向做往复直线运动，从而改变移相器2中的信号传播速率，进而改变该信号的相位，形成相位差，达到移相的目的。所述外力驱动元件位于所述腔体21开口的一端，且为本领域技术人员所熟悉的，所述滑动介质一般通过电动控制装置实现驱动，因此，本发明的滑动介质23的外力驱动元件应能与其他部件相配合，最好形成移相驱动装置。
在其他实施方式中，请参考图8、图9，传输电缆外导体242、传输电缆护套241相对于传输电缆芯线243所在的折弯平面间的几何关系呈夹角(图示为90°)，这种布置可以更好的利用天线宽度及高度方向的布局空间，而对应于布线槽上费布置在腔体两端的操作孔，为了优化传输电缆护套241的布线，需要在布线槽上进一步设置传输电缆护套布线槽216，进而避免因布线导致传输电缆外导体242与布线槽213锡焊后产生的变形应力。
综上所述，本发明中，将腔体布线槽布置到与射频电路平行的封装壁上，最大限度的缩小了移相器的尺寸，移相器重量进一步减轻、成本进一步降低。
本发明中，移相器射频电路可以根据需要采用PCB板或金属薄板结构，具有较大的灵活性。
本发明的腔体通过铝合金挤压成型或拉削成型，结构简单，无需任何金属螺钉紧固连接，既组装便捷，又避免了螺钉紧固引入的无源互调隐患。
本发明机械加工边界进一步精简，易于后续机械加工毛刺的清除，更易于 避免了因毛刺引入的无源互调隐患。
本发明腔体布线槽截面由多个平面和数个弧面组成，在焊锡时可以留存足够的焊锡以保障传输电缆外导体焊接强度，避免布线弯曲造成的影响，进一步也避免了应布线弯曲造成焊点应力所引入的无源互调隐患。
本发明传输电缆内导体通过布线槽上设置的操作孔与射频电路锡焊连接作业，允许在传输电缆外导体与腔体布线槽锡焊连接后才进行，从而有效防止了因传输电缆外导体锡焊时高温对滑动介质造成的热变形影响，保证了移相器相位调节功能的可靠实现。
有益效果：
本发明将布线槽设置到与射频电路平行的封装壁上，并且布线槽设置在所述腔体的不同封装壁上(优选为与所述射频电路板表面平行的两个封装壁上)，传输电缆内导体通过布线槽上设置的操作孔与射频电路锡焊连接作业，允许在传输电缆外导体与腔体布线槽锡焊连接后才进行，从而有效防止了因传输电缆外导体锡焊时高温对滑动介质造成的热变形影响，保证了移相器相位调节功能的可靠实现；同时，最大限度的缩小了移相器的尺寸，使移相器重量更轻、成本更低。
本发明腔体布线槽截面由多个平面和数个弧面组成，在焊锡时可以留存足够的焊锡以保障传输电缆外导体焊接强度，避免布线弯曲造成的影响，进一步也避免了应布线弯曲造成焊点应力所引入的无源互调隐患。
本发明机械加工边界非常简单，易于后续机械加工毛刺的清除，避免了因毛刺引入的无源互调隐患。
以上显示和描述了本发明的基本原理、主要特征和优点。本行业的技术人员应 该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (14)

  1. 一种腔体式移相器，包括腔体及设于所述腔体内的射频电路板；所述腔体具有多个封装壁，且所述腔体内设置至少一个空腔；在与所述射频电路板表面平行的至少一个封装壁上设置有至少一个布线槽，所述布线槽用于放置传输电缆，且所述布线槽上设置有供所述传输电缆芯线焊接的操作孔；所述传输电缆沿所述布线槽布线并穿过所述布线槽上的所述操作孔与所述射频电路板焊接连接。
  2. 根据权利要求1所述的一种腔体式移相器，其特征在于：所述腔体通过铝合金挤压成型或拉削成型。
  3. 根据权利要求1所述的一种腔体式移相器，其特征在于：所述腔体呈长条状，且所述腔体沿纵长方向的两个端面中至少有一个端面不设置封装壁而成开口状，其开口用以供所述射频电路板装入并与外部操控元件相连接。
  4. 根据权利要求1所述的一种腔体式移相器，其特征在于：所述腔体沿其纵长方向在其两侧至少设有一对凸舌，以便于腔体的快捷安装。
  5. 根据权利要求1所述的一种腔体式移相器，其特征在于：所述空腔由与射频电路板表面平行的上下两个封装壁以及与射频电路板垂直面平行的左右两个封装壁限定而成。
  6. 根据权利要求1所述的一种腔体式移相器，其特征在于：在与所述射频电路板垂直面平行的左右两个封装壁的内壁上设置有用以固定射频电路板或射频电路板绝缘支撑件的卡槽，所述卡槽用以确定射频电路在空腔中高度。
  7. 根据权利要求1所述的一种腔体式移相器，其特征在于：与所述射频电路板表面平行的两个封装壁的其中一个封装壁上设置有至少一个布线槽，且多个布线槽中心平面相互平行且与布线槽所在封装壁垂直。
  8. 根据权利要求1所述的一种腔体式移相器，其特征在于：在与所述射频电路板表面平行的两个封装壁上均设置有至少一个布线槽，且多个布线槽中心平面相互平行且与布线槽所在封装壁垂直。
  9. 根据权利要求1所述的一种腔体式移相器，其特征在于：所述布线槽通过焊锡与传输电缆的外导体相互连接并进行固化定位。
  10. 根据权利要求1所述的一种腔体式移相器，其特征在于：所述布线槽截面由多个平面和数个弧面组成，用以在焊锡时留存足够的焊锡以保障传输电缆外导体焊接强度，避免布线弯曲造成的影响。
  11. 根据权利要求1所述的一种腔体式移相器，其特征在于：所述操作孔设置在布线槽上，并沿布线槽长度方向依据射频电路板上馈电点数量及位置一一对应。
  12. 根据权利要求1所述的一种腔体式移相器，其特征在于：所述操作孔允许传输电缆的内导体通过并进入到空腔内与所述的射频电路板相锡焊连接。
  13. 根据权利要求1所述的一种腔体式移相器，其特征在于：所述射频电路板为移相器电路，所述射频电路板为PCB射频带状线路时，其直接插入空腔内的卡槽中。
  14. 根据权利要求1所述的一种腔体式移相器，其特征在于：所述射频电路板为移相器电路，所述射频电路板为金属薄板射频带状线路时，其通过绝缘支撑件插入空腔内的卡槽中。
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