EP2408062A1 - Module d'antenne à sorties et entrées multiples - Google Patents

Module d'antenne à sorties et entrées multiples Download PDF

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Publication number
EP2408062A1
EP2408062A1 EP10169286A EP10169286A EP2408062A1 EP 2408062 A1 EP2408062 A1 EP 2408062A1 EP 10169286 A EP10169286 A EP 10169286A EP 10169286 A EP10169286 A EP 10169286A EP 2408062 A1 EP2408062 A1 EP 2408062A1
Authority
EP
European Patent Office
Prior art keywords
antenna
array board
antenna array
slot
edge
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
EP10169286A
Other languages
German (de)
English (en)
Inventor
Quinjiang Rao
Mina Ayatollahi
James Paul Warden
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BlackBerry Ltd
Original Assignee
Research in Motion 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 Research in Motion Ltd filed Critical Research in Motion Ltd
Priority to EP10169286A priority Critical patent/EP2408062A1/fr
Publication of EP2408062A1 publication Critical patent/EP2408062A1/fr
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H01Q1/523—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between antennas of an array
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H01Q13/106—Microstrip slot antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • 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
    • H01Q3/24—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 orientation by switching energy from one active radiating element to another, e.g. for beam switching

Definitions

  • the present patent disclosure generally relates to antennas. More particularly, and not by way of any limitation, the present patent disclosure is directed to a Multiple Input Multiple Output (MIMO) antenna assembly and associated method.
  • MIMO Multiple Input Multiple Output
  • an internal antenna stems from the avoidance of using an external radiating element through the integration of the antenna into the communications device itself.
  • Internal antennas have several advantageous features such as being less prone to external damage, a reduction in overall size of the communications device with optimization, and easy portability.
  • the printed circuit board of the communications device serves as the ground plane of the internal antenna.
  • MIMO Multiple Input Multiple Output
  • LTE Long Term Evolution
  • MIMO technologies such as Long Term Evolution (LTE)
  • LTE Long Term Evolution
  • cross-coupling effects can be highly undesirable since effective MIMO performance requires relatively low correlation between each of the received signals of the multiple antennas.
  • LTE Long Term Evolution
  • the signals received by each of the antennas may be undesirably correlated, due to the tight confines typical of the compact devices that are favored by consumers. This can considerably affect MIMO performance. Accordingly, minimal coupling between antennas in MIMO antenna arrays is preferred to increase system efficiency and battery life, and thereby improve received signal quality. In order to optimize the characteristics of MIMO antenna arrays, a significant level of testing is generally required.
  • FIG. 1 depicts a functional block diagram of an example wireless user equipment (UE) device suitable for use with a multiple input multiple output (MIMO) antenna module of the present patent application;
  • UE wireless user equipment
  • MIMO multiple input multiple output
  • FIG. 2 depicts a MIMO antenna testing module in a schematic representation
  • FIG. 3 depicts one example embodiment of a MIMO antenna module in a frontal view representation
  • FIG. 4 depicts a second example embodiment of a MIMO antenna module in a frontal view representation
  • FIG. 5 depicts a third example embodiment of a MIMO antenna module in a frontal view representation
  • FIG. 6 depicts a flowchart showing certain steps performed in the process of testing a MIMO antenna module
  • FIGS. 7A-7C depict E-theta and E-phi patterns for the antenna of FIG. 3 in a first configuration
  • FIGS. 8A-8C depict E-theta and E-phi patterns for the antenna of FIG. 3 in a second configuration
  • FIGS. 9A-9C depict E-theta and E-phi patterns for the antenna of FIG. 3 in a third configuration
  • FIGS. 10A-10C depict E-theta and E-phi patterns for the antenna of FIG. 3 in a fourth configuration.
  • the present patent disclosure is broadly directed to various embodiments of a highly optimizable multiple input multiple output (MIMO) antenna module for multiple applications.
  • MIMO antenna module is particularly well-adapted to efficiently testing a variety of antenna designs in a short period of time, but the teachings herein may be employed within a variety of contexts.
  • an embodiment of a MIMO antenna module which comprises a first signal feed port, coupled to a first antenna element on an antenna array board; a second signal feed port, coupled to a second antenna element, disposed on the antenna array board; and a transceiver operable to be selectively coupled to either or both of the first and second signal feed ports.
  • a MIMO antenna module of the present disclosure comprises a first antenna element, having a feed port, disposed on a peripheral region of a planar surface; a second antenna element disposed on the peripheral region of the planar surface, having a feed port, disposed on the planar surface; a first transceiver operable to be selectively coupled to either or both of the first and second antenna elements; and a second transceiver operable to be selectively coupled to either or both of the first and second antenna elements.
  • the MIMO antenna modules of the present disclosure are designed to be used with wireless user equipment (UE) devices.
  • UE wireless user equipment
  • FIG. 1 depicted therein is a functional block diagram of an example wireless UE device 100 suitable for use with the MIMO antenna modules and methods referenced herein.
  • UE 100 may comprise any mobile communications device that is capable of conducting wireless communications.
  • UE 100 may be operable with any frequency range or ranges of a wide area cellular network (WACN) technology such as, e.g., a General Packet Radio Service (GPRS) network, an Enhanced Data Rates for Global System for Mobile Communications (GSM) Evolution (EDGE) network, a 3rd or 4 th Generation network, an Integrated Digital Enhanced Network (IDEN), a Code Division Multiple Access (CDMA) network, a Universal Mobile Telecommunications System (UMTS) network, a Universal Terrestrial Radio Access Network (UTRAN), or any Long-Term Evolution (LTE) network.
  • WCN wide area cellular network
  • UE 100 may also effectuate wireless communications in a frequency range or ranges according to such standards as, e.g., the well-known Institute of Electrical and Electronics Engineers (IEEE) standards, like IEEE 802.11a/b/g/n standards or other related standards such as HiperLan standard, HiperLan II standard, Wi-Max standard, OpenAir standard, and Bluetooth standard.
  • IEEE Institute of Electrical and Electronics Engineers
  • a microprocessor 102 providing for the overall control of UE 100 is operably coupled to a communication subsystem 104, which includes appropriate receivers 108 and transmitters 114 as well as associated components such as antenna elements 106, 116 that can be representative or illustrative of a MIMO antenna module embodiment described hereinbelow. It will be recognized that appropriate GPS receiver circuitry may also be provided as part of the communication subsystem.
  • Communication subsystem 104 may include one or more local oscillator (LO) modules 110 and processing modules such as digital signal processors (DSP) 112, for operating with multiple access technologies in different bands.
  • LO local oscillator
  • DSP digital signal processors
  • the particular design of the communication module 104 may be dependent upon the communications network(s) with which the device is intended to operate, e.g., as exemplified by infrastructure elements 160 and 162.
  • Microprocessor 102 also interfaces with further device subsystems such as auxiliary input/output (I/O) 118, serial port 120, display 122, keyboard 124, speaker 126, microphone 128, random access memory (RAM) 130, other communications facilities 132, which may include for example a short-range communications subsystem, and any other device subsystems generally labeled as reference numeral 134.
  • I/O auxiliary input/output
  • RAM random access memory
  • other communications facilities 132 which may include for example a short-range communications subsystem, and any other device subsystems generally labeled as reference numeral 134.
  • SIM/RUIM interface 136 is also provided in communication with the microprocessor 102.
  • Operating system software and other system software may be embodied in a persistent storage module 138 (i.e., non-volatile storage) which may be implemented using Flash memory or another appropriate memory.
  • persistent storage module 138 may be segregated into different areas, e.g., transport stack 142, storage area for computer programs 144, as well as data storage regions such as device state 146, address book 148, other personal information manager (PIM) data 150, and other data storage areas generally labeled as reference numeral 152.
  • the persistent memory may include appropriate software/firmware necessary to effectuate communications in conjunction with one or more subsystems set forth herein under control of the microprocessor 102.
  • FIG. 2 is a schematic diagram illustrating the general concept for a testing apparatus incorporating the MIMO antenna structures of the present disclosure.
  • a generally-rectangular printed circuit board 200 comprises a central region 202 surrounded by a peripheral region 204.
  • peripheral region 204 is employed for the placement of multiple antenna elements, while central region 202 may be reserved for other functions.
  • the antenna elements may be disposed within the front plane of the printed circuit board 200, within the edge planes normal to the front plane of the printed circuit board, or both.
  • the testing apparatus set forth in FIG. 2 incorporates a set of transceivers 208, 210, 212 operably connected to a radio-frequency multiplexer (RF MUX) 214.
  • RF MUX 214 any one of transceivers 208, 210, 212 may be operably connected to any one or more of the radiating elements disposed on printed circuit board 200.
  • Transceivers 208, 210, 212 may incorporate circuitry enabling them to generate signals corresponding to the signals required by the application for which the antenna is being employed.
  • Such circuitry may include, but is not limited to, Bluetooth-compatible transceiver circuitry adapted to operate in a 2.4GHz band, WiFi- compatible transceiver circuitry adapted to operate in the 2.4GHz band and wide area cellular network (WACN)-compatible transceiver circuitry adapted to operate in a GPS frequency range.
  • Bluetooth-compatible transceiver circuitry adapted to operate in a 2.4GHz band
  • WiFi- compatible transceiver circuitry adapted to operate in the 2.4GHz band
  • WACN wide area cellular network
  • Certain teachings of the present disclosure may be particularly useful in the course of the product development process.
  • varying combinations of radiating elements disposed on printed circuit board 200 may be efficiently tested within a short time frame.
  • the fabrication of multiple rounds of antenna prototypes can add significantly to the antenna design cycle.
  • the present disclosure may be employed to quickly and efficiently test a wide variety of antenna design and configuration options in short order, as set forth in further detail below.
  • FIG. 3 is a frontal view of an antenna array board 300 incorporating a set of slot elements in its peripheral region.
  • Antenna array board 300 comprises a conductive layer 302 disposed on a non-conductive layer 304.
  • the conductive layer 302 may be copper and the non-conductive layer 304 may be a glass-fiber reinforced polymer, although other materials may be used.
  • Antenna array board 300 comprises a first straight slot element 306, a second straight slot element 308, a third straight slot element 310 and a fourth straight slot element 312, each disposed in one of the four corners of the generally-rectangular antenna array board 300.
  • Straight slot elements 306 and 310 are substantially aligned to the left and right edges of antenna array board 300, while straight slot elements 308 and 312 are substantially- aligned to the top and bottom edges of antenna array board 300.
  • Each of the slot elements comprises an extended linear aperture from the front of antenna array board 300 through the conductive layer 302 to the non-conductive layer 304.
  • straight slot elements 306, 308, 310, 312 may extend into the non-conductive layer 304, as well.
  • Straight slot element 306 comprises a straight slot 314 running parallel to the left edge of antenna array board 300 from the top edge of antenna array board 300 toward the center thereof.
  • Straight slot 314 is bounded by a conductive strip 316 disposed between the straight slot 314 and the left edge of antenna array board 300.
  • the width of the conducting strip 316 may be adjusted to optimize antenna resonance frequency and bandwidth.
  • Straight slot element 306 is fed by signal feed port 318 disposed near the end of straight slot 314 furthest from the upper edge of antenna array board 300.
  • Signal feed port 318 comprises a pair of contacts on the conductive layer 302 on opposite sides of straight slot 314.
  • Straight slot element 308 comprises a straight slot 320 running parallel to the top edge of antenna array board 300 from the right edge of antenna array board 300 toward the center thereof.
  • Straight slot 320 is bounded by a conductive strip 322 disposed between the straight slot 320 and the upper edge of antenna array board 300.
  • Straight slot element 308 is fed by a signal feed port 324 disposed near the end of straight slot 320 furthest from the right edge of antenna array board 300.
  • Straight slot element 310 comprises a straight slot 330 running parallel to the right edge of antenna array board 300 from the bottom edge of antenna array board 300 toward the center thereof.
  • Straight slot 330 is bounded by a conductive strip 332 disposed between the straight slot 330 and the right edge of antenna array board 300.
  • Straight slot element 310 is fed by a signal feed port 334 disposed near the end of straight slot 330 furthest from the bottom edge of antenna array board 300.
  • Straight slot element 312 comprises a straight slot 340 running parallel to the bottom edge of antenna array board 300 from the left edge of antenna array board 300 toward the center thereof.
  • Straight slot 340 is bounded by a conductive strip 342 disposed between the straight slot 340 and the bottom edge of antenna array board 300.
  • Straight slot element 312 is fed by a signal feed port 344 disposed near the end of straight slot 340 furthest from the left edge of antenna array board 300.
  • the length, width and other characteristics of the slot elements described herein, as well as the optimal placement of the signal feed ports, will be determined according to the design criteria for the antenna array board 300.
  • the dimensions of the slot elements, their shape and their location with respect to the any edge of the antenna array board 300 can be adjusted to optimize the resonance frequency, bandwidth, impedance matching, directivity, and other antenna performance parameters.
  • the length of the slot elements will generally be approximately a quarter of a wavelength of the principal operating frequency for signal for which the element is designed, but may vary according to the particular application.
  • corresponding elements may have identical shapes and dimensions, but certain other embodiments may not employ corresponding elements having identical shapes or dimensions.
  • alternate embodiments may include additional elements, either within the front plane of antenna array board 300, within the edge planes normal to the front plane of the printed circuit board, or both. All of these variations are well-known to those of skill in the art of antenna design.
  • one or more of straight slot elements 306, 308, 310, 312 may be selectively coupled to one or more transceivers at a given time, thereby enabling the wireless characteristics of a mobile communication device or other communications apparatus to be varied and optimized according to conditions.
  • This selective coupling may be accomplished by means of diode switches or other technology well-known to those of skill in the art.
  • Those of skill in the art will recognize that there is nothing whatsoever in the spirit and scope of the present disclosure limiting it to use with slot elements, and the teachings of the present disclosure may be employed in connection with a wide variety of antenna element types.
  • FIG. 4 is a frontal view of an antenna array board 400 incorporating a pair of L-slot elements.
  • Antenna array board 400 comprises a conductive layer 402 disposed on a non-conductive layer 404.
  • the conductive layer 402 may be copper and the non-conductive layer 404 may be a glass-fiber reinforced polymer, although other materials may be used.
  • Antenna array board 400 comprises a first L-slot element 406 and a second L-slot element 408. The longer internal leg of each of L-slot elements 406 and 408 is substantially aligned to the parallel left and right edges of antenna array board 300, while the shorter outer legs run perpendicular thereto.
  • Each of the slot elements comprises an extended L-shaped aperture from the front of antenna array board 400 through the conductive layer 402 to the non-conductive layer 404. In certain embodiments, the slot elements may extend into the non-conductive layer 404, as well.
  • L-slot element 406 comprises an L-slot 414 having a shorter outer segment and a longer inner segment.
  • the outer segment of L-slot 414 runs from, and perpendicular to, the left edge of antenna array board 400 toward the center thereof.
  • the inner segment of L-slot 414 runs perpendicular to the outer segment and parallel to the left edge of antenna array board 400.
  • L-slot 414 is bounded by a conductive strip 416 disposed between the L-slot 414 and the left edge of antenna array board 400.
  • L-slot element 406 is fed by signal feed port 418 disposed near the interior end of L-slot 414.
  • L-slot element 408 comprises an L-slot 420 having a shorter outer segment and a longer inner segment.
  • the outer segment of L-slot 420 runs from, and perpendicular to, the right edge of antenna array board 400 toward the center thereof.
  • the inner segment of L-slot 420 runs perpendicular to the outer segment and parallel to the right edge of antenna array board 400.
  • L-slot 420 is bounded by a conductive strip 422 disposed between the L-slot 420 and the right edge of antenna array board 400.
  • L-slot element 408 is fed by signal feed port 424 disposed near the interior end of L-slot 414.
  • either or both of L-slot elements 406, 408 may be selectively coupled to one or more transceivers 104 at a given time, thereby enabling the wireless characteristics of a mobile communication device such as UE 100 or other communications apparatus to be varied and optimized according to conditions.
  • a mobile communication device such as UE 100 or other communications apparatus
  • FIG. 3 those of skill in the art will recognize that there is nothing whatsoever within the spirit and scope of the present disclosure limiting it to use with slot elements, and the teachings of the present disclosure may be employed in connection with a wide variety of antenna element types.
  • alternate embodiments may include additional elements, either within the front plane of antenna array board 400, within the edge planes normal to the front plane of the printed circuit board, or both.
  • FIG. 5 is a frontal view of an antenna array board 500 operable to be employed in the apparatus set forth in FIG. 2 .
  • Antenna array board 500 comprises a conductive layer 502 disposed on a non-conductive layer 504.
  • the conductive layer 502 may be copper and the non-conductive layer 504 may be a glass-fiber reinforced polymer, although other materials may be used.
  • Antenna array board 500 comprises a wide variety of elements, as set forth in detail below. The elements comprise a variety of shaped apertures extending from the front of antenna array board 500 through the conductive layer 502 to the non-conductive layer 504. In certain embodiments, the shaped apertures may extend into the non-conductive layer 504, as well.
  • the rectangular geometry of the antenna array board 500 is substantially defined by peripheral edges YL, YR, XB and XT.
  • Peripheral edges YL and YR run parallel to centerline axis Y, which runs down the center of the antenna array board 500 along its major axis.
  • Peripheral edges XB and XT run parallel to centerline axis X, which runs down the center of the antenna array board 500 along its minor axis and orthogonal to centerline axis Y.
  • antenna array board 500 incorporates a wide variety of elements of varying types, and thus is operable to be employed in a wide variety of applications.
  • the elements include straight slots 510, 512, T-slot elements 514, 516, 532, 540, L-slots 518, 520, 534, 538, T-and-slot element 526, Y-slot element 524 and slot element 536.
  • the upper portion of antenna array board 500 houses two straight slots 510, 512 separated by a T-slot element 514.
  • Straight slot 510 runs parallel to the upper edge of antenna array board 500 from the left edge of antenna array board 500 toward the center thereof.
  • Straight slot 510 is bounded by a conductive strip 574 disposed between the straight slot 510 and the upper edge of antenna array board 500.
  • Straight slot 510 is fed by a signal feed port 576 disposed near the inboard end of straight slot 510 furthest from the left edge of antenna array board 500.
  • Straight slot 512 runs parallel to the upper edge of antenna array board 500 from the right edge of antenna array board 500 toward the center thereof.
  • Straight slot 512 is bounded by a conductive strip 542 disposed between the straight slot 512 and the upper edge of antenna array board 500.
  • Straight slot 512 is fed by a signal feed port 544 disposed near the inboard end of straight slot 512 furthest from the right edge of antenna array board 500.
  • T-slot element 514 is interposed between straight slot 510 and straight slot 512 along the upper edge of antenna array board 500.
  • T-slot element 514 extends from the upper edge of antenna array board 500 to a point below straight slots 510, 512.
  • T-slot element 514 is narrower in the region immediately between straight slots 510, 512 and wider in the region below straight slots 510, 512.
  • L-slots 518, 520 and a pair of T-slot elements 516, 522 are disposed along the right edge of antenna array board 500.
  • L-slot 518 incorporates a shorter outer segment and a longer inner segment.
  • the outer segment of L-slot 518 runs from the right edge of antenna array board 500 toward the center thereof.
  • the inner segment of L-slot 518 runs perpendicular to the outer segment and parallel to the right edge of antenna array board 500.
  • L-slot 518 is bounded by a conductive strip 546 disposed between the L-slot 518 and the right edge of antenna array board 500.
  • L-slot 518 is fed by a signal feed port 548 disposed near the upper end of L-slot 518.
  • L-slot 520 also incorporates a shorter outer segment and a longer inner segment.
  • the outer segment of L-slot 520 runs from the right edge of antenna array board 500 toward the center thereof.
  • the inner segment of L-slot 520 runs perpendicular to the outer segment and parallel to the right edge of antenna array board 500.
  • L-slot 520 is bounded by a conductive strip 550 disposed between the L-slot 520 and the right edge of antenna array board 500.
  • L-slot 520 is fed by a signal feed port 552 disposed near the lower end of L-slot 520.
  • T-slot element 516 is interposed between L-slot 518 and straight slot 512 along the right edge of antenna array board 500.
  • T-slot element 514 extends from the right edge of antenna array board 500 to a point inside of the innermost extents of L-slots 518, 520.
  • T-slot element 516 is narrower in the region adjacent to L-slot 518 and wider in the region inside of the inward extent of L-slot 518.
  • T-slot element 522 is interposed between L-slot 520 and Y-slot element 524 along the right edge of antenna array board 500.
  • T-slot element 514 extends from the right edge of antenna array board 500 to a point inside of the innermost extents of L-slots 518, 520.
  • T-slot element 522 is narrower in the region adjacent to L-slot 520 and wider in the region inside of the inward extent of L-slot 520.
  • T-slot element 522 incorporates a signal feed port 554 adjacent to the lower end of the aperture.
  • L-slots 534, 538, a pair of T-slot elements 532, 540 and a straight slot element 536 are disposed along the left edge of antenna array board 500.
  • L-slot 534 incorporates a shorter outer segment and a longer inner segment.
  • the outer segment of L-slot 534 runs from the left edge of antenna array board 500 toward the center thereof.
  • the inner segment of L-slot 534 runs perpendicular to the outer segment and parallel to the left edge of antenna array board 500.
  • L-slot 534 is bounded by a conductive strip 566 disposed between the L-slot 534 and the left edge of antenna array board 500.
  • L-slot 534 is fed by a signal feed port 568 disposed near the lower end of L-slot 534.
  • L-slot 538 incorporates a shorter outer segment and a longer inner segment.
  • the outer segment of L-slot 538 runs from the left edge of antenna array board 500 toward the center thereof.
  • the inner segment of L-slot 538 runs perpendicular to the outer segment and parallel to the left edge of antenna array board 500.
  • L-slot 538 is bounded by a conductive strip 570 disposed between the L-slot 538 and the left edge of antenna array board 500.
  • L-slot 538 is fed by a signal feed port 572 disposed near the lower end of L-slot 538.
  • T-slot element 532 is interposed between L-slot 534 and Y-slot element 528 along the left edge of antenna array board 500.
  • T-slot element 532 extends from the left edge of antenna array board 500 to a point inside of the innermost extents of L-slots 534, 538.
  • T-slot element 532 is narrower in the region adjacent to L-slot 534 and wider in the region inside of the inward extent of L-slot 534.
  • T-slot element 540 is interposed between L-slot 538 and straight slot 510 along the left edge of antenna array board 500.
  • T-slot element 540 extends from the left edge of antenna array board 500 to a point inside of the innermost extents of L-slots 534, 538.
  • T-slot element 540 is narrower in the region adjacent to L-slot 538 and wider in the region inside of the inward extent of L-slot 538.
  • Straight slot element 536 is interposed between L-slots 534, 538.
  • Straight slot element 536 extends perpendicularly inward from the left edge of antenna array board 500 toward the center thereof. In the embodiment shown in Figure 5 , straight slot element 536 extends into antenna array panel 500 approximately the same distance as T-slot elements 532, 540 extend into antenna array panel 500.
  • a pair of Y-shaped elements 528, 530 and T-and-slot element 526 are disposed along the lower edge of antenna array board 500.
  • Y-shaped element 524 comprises vertical segment 584 and horizontal segment 580.
  • Vertical segment 584 extends up perpendicularly from the bottom edge of antenna array board 500, parallel to the right edge of antenna array board 500.
  • Vertical segment 584 is separated from the right edge of the antenna array board 500 by conductive strip 578.
  • Horizontal segment 580 extends inward from the vertical segment 584 and parallel to the lower edge of antenna array board 500.
  • Horizontal segment 580 is separated from the lower edge of antenna array board 500 by conductive strip 582.
  • Y-shaped element 528 comprises vertical segment 530 and horizontal segment 586.
  • Vertical segment 530 extends up perpendicularly from the bottom edge of antenna array board 500, parallel to the left edge of antenna array board 500.
  • Vertical segment 530 is separated from the left edge of the antenna array board 500 by conductive strip 562.
  • Signal feed port 564 is disposed at the upper end of vertical segment 530.
  • Horizontal segment 586 extends inward from vertical segment 530 and parallel to the lower edge of antenna array board 500. Horizontal segment 586 is separated from the lower edge of antenna array board 500 by conductive strip 558.
  • Signal feed port 560 is disposed at the inboard end of horizontal segment 586.
  • antenna array board 500 makes use of design features providing various types of diversity, including spatial diversity and polarization diversity to enhance antenna performance. Spatial diversity may be achieved by placing similar elements on opposite edges of antenna array board 500. Polarization diversity may be achieved by aligning the polarization of the elements with the edges along which they run. Using these three design strategies in concert with others known to those of skill in the art, an optimal antenna design may be achieved.
  • antenna elements described above are disposed within the front plane of the antenna array board 500, but those of skill in the art will recognize that antenna elements may be disposed within the edge planes normal to the front plane of the printed circuit board, as well. As noted above in connection with FIGS. 3 and 4 , those of skill in the art will recognize that there is nothing whatsoever within the spirit and scope of the present disclosure limiting it to use with any particular style or type of antenna elements, and the teachings of the present disclosure may be employed in connection with a wide variety of antenna element types.
  • antenna array panel 500 may be selectively coupled to one or more transceivers 104 at a given time, thereby enabling the wireless characteristics of a mobile communication device such as UE 100 or other communications apparatus employing antenna array board 500 to be widely varied and optimized according to conditions. In certain embodiments, this coupling may be effectuated on both the transmit and receive sides.
  • FIG. 6 is a flowchart of an example method 600 of the present patent application with respect to testing a MIMO module in one embodiment.
  • a set of antenna elements is selected (block 602).
  • signal parameters are selected (block 604).
  • the signal parameters may include, but are not limited to, frequency, amplitude and phase.
  • a signal having the selected signal parameters is transmitted via the selected antenna elements (block 606).
  • Various antenna characteristics are then recorded according to the observed performance of the selected antenna elements under the selected conditions (block 608).
  • FIGS. 7A-10C depict measured radiation patterns associated with the four slot elements 306, 308, 310, 312 of antenna array board 300 depicted in FIG. 3 . These patterns are intended to represent the types of data which can be generated via the use of the teachings of the present disclosure.
  • the convention employed in the following patterns is as identified by the coordinate datum of FIG. 3 .
  • the X-axis is aligned to the top and bottom edges of antenna array board 300
  • the Y-axis is aligned to the right and left edges of antenna array board 300
  • the Z-axis extends orthogonal to the front surface of antenna array board 300.
  • the same convention is used for each of FIGS. 7A-10C .
  • FIGS. 7A-7C depict two-dimensional E-theta and E-phi patterns for straight slot element 306 of FIG. 3 under certain conditions.
  • the outer extent of the graph represents a signal level of 0dB
  • the first and second reference dotted lines represent signal levels of -10dB and -20 dB, respectively.
  • the same convention is used in each of FIGS. 7A-10C . It can be seen in FIG. 7A that the E-theta pattern is relatively attenuated, while the E-phi pattern is relatively strong, with multiple prominent lobes.
  • FIGS. 8A-8C depict two-dimensional E-theta and E-phi patterns for straight slot element 308 of FIG. 3 under certain conditions.
  • FIG. 8A depicts a chart showing two-dimensional E-theta and E-phi patterns for straight slot element 306 of FIG. 3 under certain conditions in the XY plane.
  • FIG. 8B depicts a chart showing two-dimensional E-theta and E-phi patterns for straight slot element 306 of FIG. 3 under certain conditions in the XZ plane.
  • FIG. 8C depicts a chart showing two-dimensional E-theta and E-phi patterns for straight slot element 306 of FIG. 3 under certain conditions in the YZ plane.
  • FIGS. 9A-9C depict two-dimensional E-theta and E-phi patterns for straight slot element 310 of FIG. 3 under certain conditions.
  • FIG. 9A depicts a chart showing two-dimensional E-theta and E-phi patterns for straight slot element 306 of FIG. 3 under certain conditions in the XY plane.
  • FIG. 9B depicts a chart showing two-dimensional E-theta and E-phi patterns for straight slot element 306 of FIG. 3 under certain conditions in the XZ plane.
  • FIG. 9C depicts a chart showing two-dimensional E-theta and E-phi patterns for straight slot element 306 of FIG. 3 under certain conditions in the YZ plane.
  • FIGS. 10A-10C depict two-dimensional E-theta and E-phi patterns for straight slot element 312 of FIG. 3 .
  • FIG. 10A depicts a chart showing two-dimensional E-theta and E-phi patterns for straight slot element 306 of FIG. 3 under certain conditions in the XY plane.
  • FIG. 10B depicts a chart showing two-dimensional E-theta and E-phi patterns for straight slot element 306 of FIG. 3 under certain conditions in the XZ plane.
  • FIG. 10C depicts a chart showing two-dimensional E-theta and E-phi patterns for straight slot element 306 of FIG. 3 under certain conditions in the YZ plane.
EP10169286A 2010-07-12 2010-07-12 Module d'antenne à sorties et entrées multiples Ceased EP2408062A1 (fr)

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CN104505592A (zh) * 2015-01-14 2015-04-08 华南理工大学 一种具有宽频带特性的mimo移动终端天线
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US9319155B2 (en) 2010-07-12 2016-04-19 Blackberry Limited Multiple input multiple output antenna module and associated method
US8750798B2 (en) 2010-07-12 2014-06-10 Blackberry Limited Multiple input multiple output antenna module and associated method
US9748668B2 (en) 2011-07-15 2017-08-29 Blackberry Limited Diversity antenna module and associated method for a user equipment (UE) device
US9136595B2 (en) 2011-07-15 2015-09-15 Blackberry Limited Diversity antenna module and associated method for a user equipment (UE) device
WO2013140770A1 (fr) * 2012-03-22 2013-09-26 日本電気株式会社 Dispositif d'antenne et dispositif de terminal sans fil l'utilisant
US10305185B2 (en) 2014-07-25 2019-05-28 Kathrein Se Multiband antenna
WO2016072035A1 (fr) * 2014-11-06 2016-05-12 Sony Corporation Antenne couplée à une ligne ruban avec fentes périodiques pour dispositifs électroniques sans fil
JP2017533675A (ja) * 2014-11-06 2017-11-09 ソニー株式会社 ワイヤレス電子デバイスのための周期スロットを有するストリップライン結合アンテナ
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US20180321285A1 (en) * 2017-05-05 2018-11-08 Southern States, Llc Combined Current and Voltage Sensor for High Voltage Electric Power Lines
WO2018204874A1 (fr) * 2017-05-05 2018-11-08 Southern States Llc Capteur combiné de courant et de tension pour ligne d'alimentation électrique haute tension
US10627431B2 (en) 2017-05-05 2020-04-21 Southern States, Llc Combined in-line DC and AC current sensor for high voltage electric power lines
US10698010B2 (en) 2017-05-05 2020-06-30 Southern States Combined current and voltage sensor for high voltage electric power lines

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