WO2014091458A2 - Agencement d'antennes à plaque à double polarisation - Google Patents

Agencement d'antennes à plaque à double polarisation Download PDF

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Publication number
WO2014091458A2
WO2014091458A2 PCT/IB2013/060914 IB2013060914W WO2014091458A2 WO 2014091458 A2 WO2014091458 A2 WO 2014091458A2 IB 2013060914 W IB2013060914 W IB 2013060914W WO 2014091458 A2 WO2014091458 A2 WO 2014091458A2
Authority
WO
WIPO (PCT)
Prior art keywords
patch
antenna
frequency band
antenna arrangement
radiating
Prior art date
Application number
PCT/IB2013/060914
Other languages
English (en)
Other versions
WO2014091458A3 (fr
Inventor
Andries Petrus Cronje Fourie
Derek Colin NITCH
Original Assignee
Poynting Antennas (Pty) Limited
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 Poynting Antennas (Pty) Limited filed Critical Poynting Antennas (Pty) Limited
Publication of WO2014091458A2 publication Critical patent/WO2014091458A2/fr
Publication of WO2014091458A3 publication Critical patent/WO2014091458A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0414—Substantially flat resonant element parallel to ground plane, e.g. patch antenna in a stacked or folded configuration
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0428—Substantially flat resonant element parallel to ground plane, e.g. patch antenna radiating a circular polarised wave
    • H01Q9/0435—Substantially flat resonant element parallel to ground plane, e.g. patch antenna radiating a circular polarised wave using two feed points

Definitions

  • This invention relates to an antenna arrangement more particularly a broad band dual polarized arrangement.
  • LTE long term evolution
  • 3G and 4G more sophisticated antenna arrangements are required to provide multiple input multiple output (“MiMo") and diversity support for the networks at customer premise equipment.
  • the known antenna arrangements either do not cover the bandwidth required whilst also providing two cables and associated ports, each carrying a different polarization, and/or are too complex and/or cumbersome and/or are too expensive.
  • an antenna arrangement comprising: - at least a first patch antenna associated with a first frequency- band region and a second patch antenna associated with a second frequency band region, each patch antenna comprising a ground plane and a radiating patch and wherein the radiating patch of the first patch antenna also serves as the ground plane for the second patch antenna;
  • each radiating patch having at least two different axes of symmetry and wherein the axes are at an angle ⁇ relative to one another, with 0 ⁇ ⁇ ⁇ 90 degrees:
  • each patch antenna comprising at least a first feed point and a second feed point associated with at least first and second polarizations at a polarization angle differential equal to ⁇ ,
  • the first and second feed points of each of the patch antennas may be on the respective axes of symmetry.
  • the respective axes of symmetry may be at right angles relative to one another.
  • the radiating patches may be circular.
  • the radiating patches may be arranged concentrically.
  • the radiating patches may be arranged in a sequence of decreasing diameter from the radiating patch of the first patch antenna.
  • the antenna arrangement may comprise a third patch antenna associated with a third frequency band region and wherein the radiating patch of the second patch antenna also serves as the ground plane for the third patch antenna.
  • the first frequency band region may omprises frequencies in the range 700MHz to 1000MHz.
  • the second frequency band region may comprise frequencies in the range 1700MHz to 2200MHz.
  • the third frequency band region may comprise frequencies in the range 2500MHz to 2700MHz.
  • the antenna arrangement may comprise a frequency combiner/splitter between on the one hand at least first and second cables associated with first and second polarizations respectively and on the other hand, at least first and second ports for signals in the first frequency band region and associated with the first and second polarizations respectively and first and second ports for signals in the second frequency band region and associated with the first and second polarizations respectively.
  • the frequency combiner/splitter may be provided on one face of a substrate.
  • the ground plane of the first patch antenna may be provided on an opposite face of the substrate.
  • First and second radio frequency transmission lines may be provided between the first and second ports for signals in the first frequency band region and the first and second feed points of the first patch antenna and first and second radio frequency transmission lines may be provided between the first and second ports for signals in the second frequency band region and the first and second feed points of the second patch antenna.
  • the first and second feed points of each patch antenna may be provided on a respective insulating carrier located between the ground plane and the radiating patch of the patch antenna to be spaced from the radiating patch and to be in capacitive coupling relationship with the radiating patch.
  • the respective insulating carriers may be mounted in spaced relation on a central post.
  • the first feed point of the first patch antenna may be on a first axis
  • the first feed point of the second patch antenna may be on a second axis
  • the first and second axes may be angularly offset from one another.
  • the first and second axes are offset by 90 degrees.
  • figure 1 is a diagrammatic perspective view of an example embodiment of an antenna arrangement with some parts thereof in broken lines, for better clarity:
  • figure 2 is a diagrammatic representation of a frequency band covered by antennas of the arrangement
  • figure 3 is a plan view of a layout of a frequency multiplexer, more particularly a triplexer, or frequency band splitter/combiner forming part of the antenna arrangement;
  • figure 4 is a side view in direction IV in figure 1 of the antenna arrangement
  • figure 5 is a section on line V- V in figure 4;
  • figure 6 is a plan view of the antenna arrangement; figure 7 side view in direction VII in figure 1 of the antenna arrangement;
  • figure 8 is a section on line VIII - VIII' in figure 4.
  • figure 9 is a section on line IX - IX' in figure 4.
  • figure 10 is a section on line X - X' in figure 4.
  • An antenna arrangement is generally designated by the reference numeral 10 in figures 1 , 4, 6 and 7.
  • the antenna arrangement 10 comprises at least a first patch antenna 12 associated with a first frequency band region 20.1 (shown in figure 2) and a second patch antenna 14 associated with a second frequency band region 20.2.
  • the first patch antenna comprises a ground plane 16 and a radiating conductive patch 18 spaced from the ground plane.
  • the radiating patch 18 of the first patch antenna 12 serves as the ground plane for a radiating patch 30 of the second patch antenna 14.
  • Each radiating patch has at least first and second different axes of symmetry 22.1 and 22.2 (shown in figures 1 and 5) and the axes are at an angle ⁇ relative to one another and wherein 0 ⁇ ⁇ ⁇ 90 degrees.
  • Each patch antenna comprises at least a first feed point (24 in the case of patch antenna 12) and a second feed point (26 in the case of patch antenna 12) associated with at least first and second polarizations respectively at a polarization angle differential equal to ⁇ .
  • the antenna 5 arrangement 10 comprises a third patch antenna 28 which is associated with a third frequency band region 20.3 (shown in figure 2).
  • the radiating patch 30 of the second patch antenna 14 serves as the ground plane for a radiating patch 32 of the third patch antenna 28.
  • the radiating patches 18, 30 and 32 comprise respective circular conductive plates which are concentrically mounted in spaced and stacked relation above ground plane 16.
  • the radiating patches may be arranged in sequence of decreasing diameter from the radiating patch 18 of the first patch antenna.
  • ir ⁇ angle ⁇ 90 degrees.
  • ⁇ may be any suitable angle.
  • the first frequency band region comprises frequencies in the range 700MHz to 1000MHz.
  • the second frequency band region comprises frequencies in the range 1 700MHz to 2200MHz.
  • the third frequency band region comprises frequencies in the range 2500MHz to 2700MHz. It will be appreciated that in other embodiments other frequency band regions may be used.
  • the ground plane 16 of the first patch antenna 12 is provided on one face of a substrate 40. Any suitable printed circuit board technique may be used to provide the ground plane.
  • the antenna arrangement may be used as a receiving antenna arrangement, alternatively as a transmitting antenna arrangement and further alternatively as both receiving and transmitting antenna arrangement.
  • the antenna arrangement comprises a frequency multiplexer/demultiplexer or frequency band splitter/combiner 42 and which is provided in etched form on an opposite face of the substrate 40.
  • the splitter/combiner 42 may be etched on a second substrate 41 which is securab!e to the first substrate 40.
  • the frequency splitter/combiner comprises a first polarization port 44 and a second polarization port 46 which are connectable to first and second cables 48 and 50 respectively.
  • the splitter has a first pair of first and second frequency band ports 52.1 and 52.2 for signals with frequencies in the first frequency band region 20.1 and associated with the first and second polarizations respectively, a second pair of first and second frequency band ports 54.1 and 54.2 for signals with frequencies in the second frequency band region 20.2 and associated with the first and second polarizations respectively and a third pair of first and second frequency band ports 58.1 and 56.2 for signals with frequencies in the third frequency band region 20.3 and associated with the first and second polarizations respectively.
  • the first pair of frequency band ports 52.1 and 52.2 are connected via respective transmission lines 60 and 62 to feed points 24 and 26 (shown in figure 5) respectively on an insulating carrier 64 and which feed points are in capacitive coupling relation with radiating patch 18 of first patch antenna 12.
  • the feed points 24 and 26 are located on the axes of symmetry 22.2 and 22.1 respectively, which axes are at right angles relative to one another.
  • the second pair of frequency band ports 54.1 and 54.2 are connected via respective transmission lines 66 and 68 to feed points 70 and 72 respectively on an insulating carrier 74 and which feed points are located on the axes of symmetry of the radiating patch 30 of the second patch antenna 14, which axes are at right angles relative to one another and which feed points are in capacitive coupling relation with the radiating patch 30.
  • the third pair of frequency band ports 56.1 and 56.2 are connected via respective transmission lines 76 and 78 to feed points 80 and 82 respectively on an insulating carrier 84 and which feed points are located on the axes of symmetry of the radiating patch 32 of the third patch antenna 28, which axes are at right relative to one another and which feed points are in capacitive coupling relation with radiating patch 32 of third patch antenna 28.
  • Insulating earners 64, 74 and 84 are mounted on and carried by a central post.
  • transmission line 60 and its connection to port 52.1 on the one hand and feed point 24 on the other, which is coupled to radiating patch 18 as described above is shown in figure 8, which is self explanatory.
  • transmission line 68 and its connection to port 54.2 and feed point 72 which is coupled to radiating patch 30.
  • transmission line 76 and its connection to port 56.1 and feed point 80 which is coupled to radiating patch 32.
  • the signals to and from the first pair of frequency band ports 52.1 and 52.2 are coupled by feed points 24 and 26 to radiating patch 18 with a polarization angle differential of 90 degrees and the signals to and from the second pair of frequency band ports 54.1 and 54.2 are coupled by feed points 70 and 72 to radiating element 32 with a polarization differential of 90 degrees, but with feed point 26 for the first port 52.1 of the first pair of 5 frequency band ports on axis 22.1 which is angularly offset (in the example embodiment by 90 degrees, but in other embodiments other suitable angles may be used) relative to axis 22.2 on which the feed point 70 for the first port 54.1 of the second pair of frequency band ports is provided.
  • the signals to and from the third pair of frequency band ports 56.1 and i O 56.2 are coupled by feed points 80 and 82 to the radiating patch 32.
  • the antenna arrangement is scalable to cover any suitable number of more than two frequency band regions and the frequency band regions may be different from those of the example embodiment.
  • the antenna arrangement is reciprocal in use in that it can be used either as a transmitting antenna or a receiving antenna or as both.

Landscapes

  • Waveguide Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

La présente invention porte sur un agencement d'antennes 10 qui comprend au moins une première antenne à plaque 12 associée à une première région de bande de fréquences et une seconde antenne à plaque 14 associée à une seconde région de bande fréquences. Chaque antenne à plaque comprend un plan de masse 16 et une plaque rayonnante 18. La plaque rayonnante 18 de la première antenne à plaque sert également en tant que plan de masse pour la seconde antenne à plaque. Chaque plaque rayonnante a au moins deux axes différents de symétrie 22.1 et 22.2 et les axes sont à un angle Θ l'un par rapport à l'autre, avec 0 < Θ ≤ 90 degrés. Chaque antenne à plaque comprend au moins un premier point d'alimentation et un second point d'alimentation associés à au moins des première et seconde polarisations à un angle de polarisation différentiel égal à Θ.
PCT/IB2013/060914 2012-12-13 2013-12-13 Agencement d'antennes à plaque à double polarisation WO2014091458A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA201209478 2012-12-13
ZA2012/09478 2012-12-13

Publications (2)

Publication Number Publication Date
WO2014091458A2 true WO2014091458A2 (fr) 2014-06-19
WO2014091458A3 WO2014091458A3 (fr) 2014-11-06

Family

ID=50792470

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2013/060914 WO2014091458A2 (fr) 2012-12-13 2013-12-13 Agencement d'antennes à plaque à double polarisation

Country Status (1)

Country Link
WO (1) WO2014091458A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220131280A1 (en) * 2019-12-26 2022-04-28 Shure Acquisition Holdings, Inc. Dual Band Antenna

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106935963A (zh) * 2017-01-20 2017-07-07 西南电子技术研究所（中国电子科技集团公司第十研究所） 高隔离度双极化环缝微带天线单元

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2352091B (en) * 1999-07-10 2003-09-17 Alan Dick & Company Ltd Patch antenna
US6452549B1 (en) * 2000-05-02 2002-09-17 Bae Systems Information And Electronic Systems Integration Inc Stacked, multi-band look-through antenna
US7084815B2 (en) * 2004-03-22 2006-08-01 Motorola, Inc. Differential-fed stacked patch antenna
EP1906484A1 (fr) * 2006-09-28 2008-04-02 Selex Communications S.P.A. Capacité distribuée dans des lignes à ruban, filtres, transformateurs, résonateurs et combinateurs
WO2009093980A1 (fr) * 2008-01-22 2009-07-30 Agency For Science, Technology & Research Antenne large bande en plage à polarisation circulaire

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220131280A1 (en) * 2019-12-26 2022-04-28 Shure Acquisition Holdings, Inc. Dual Band Antenna
US11749910B2 (en) * 2019-12-26 2023-09-05 Shure Acquisition Holdings, Inc. Dual band antenna

Also Published As

Publication number Publication date
WO2014091458A3 (fr) 2014-11-06

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