GB2234120A - Microstrip antenna - Google Patents

Microstrip antenna

Info

Publication number
GB2234120A
GB2234120A GB9015665A GB9015665A GB2234120A GB 2234120 A GB2234120 A GB 2234120A GB 9015665 A GB9015665 A GB 9015665A GB 9015665 A GB9015665 A GB 9015665A GB 2234120 A GB2234120 A GB 2234120A
Authority
GB
United Kingdom
Prior art keywords
fed
patches
lambda
patch
pair
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.)
Granted
Application number
GB9015665A
Other versions
GB2234120B (en
GB9015665D0 (en
Inventor
Mark Robert Staker
John Cameron Mackichan
Jashwant Singh Dahele
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.)
British Telecommunications PLC
Original Assignee
British Telecommunications PLC
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
Priority claimed from GB888803451A external-priority patent/GB8803451D0/en
Application filed by British Telecommunications PLC filed Critical British Telecommunications PLC
Priority to GB9015665A priority Critical patent/GB2234120B/en
Publication of GB9015665D0 publication Critical patent/GB9015665D0/en
Publication of GB2234120A publication Critical patent/GB2234120A/en
Application granted granted Critical
Publication of GB2234120B publication Critical patent/GB2234120B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/005—Patch antenna using one or more coplanar parasitic elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061—Two dimensional planar arrays
    • H01Q21/065—Patch antenna array

Landscapes

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

Abstract

A patch array microwave antenna comprising spaced sub-arrays each consisting of a fed patch (1) and at least a pair of parasitic patches (3a, 3b) fed from the non radiative (as herein defined) edges of the fed patch (1); in a second embodiment a second pair of parasitic patches (3c, 3d) fed from the radiative edges are also provided, so as to form a five-member cross. Spacings between patches in a group are kept to below lambda /15, and groups are spaced apart by at least double this. Intergroup distances P are kept below 2 lambda , but may be greater than lambda if alternate lines of patches are staggered by P/2 so no on-axis diffraction lobes appear in the radiation pattern.
GB9015665A 1988-02-15 1989-02-13 Microstrip antenna Expired - Fee Related GB2234120B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9015665A GB2234120B (en) 1988-02-15 1989-02-13 Microstrip antenna

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB888803451A GB8803451D0 (en) 1988-02-15 1988-02-15 Antenna
GB9015665A GB2234120B (en) 1988-02-15 1989-02-13 Microstrip antenna
PCT/GB1989/000141 WO1989007838A1 (en) 1988-02-15 1989-02-13 Microstrip antenna

Publications (3)

Publication Number Publication Date
GB9015665D0 GB9015665D0 (en) 1990-10-03
GB2234120A true GB2234120A (en) 1991-01-23
GB2234120B GB2234120B (en) 1992-01-22

Family

ID=26293494

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9015665A Expired - Fee Related GB2234120B (en) 1988-02-15 1989-02-13 Microstrip antenna

Country Status (1)

Country Link
GB (1) GB2234120B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2300760A (en) * 1995-04-13 1996-11-13 Northern Telecom Ltd A layered antenna

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2067842A (en) * 1980-01-16 1981-07-30 Secr Defence Microstrip Antenna
US4370657A (en) * 1981-03-09 1983-01-25 The United States Of America As Represented By The Secretary Of The Navy Electrically end coupled parasitic microstrip antennas
US4415900A (en) * 1981-12-28 1983-11-15 The United States Of America As Represented By The Secretary Of The Navy Cavity/microstrip multi-mode antenna
EP0154858A2 (en) * 1984-03-15 1985-09-18 BROWN, BOVERI & CIE Aktiengesellschaft Antenna

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2067842A (en) * 1980-01-16 1981-07-30 Secr Defence Microstrip Antenna
US4370657A (en) * 1981-03-09 1983-01-25 The United States Of America As Represented By The Secretary Of The Navy Electrically end coupled parasitic microstrip antennas
US4415900A (en) * 1981-12-28 1983-11-15 The United States Of America As Represented By The Secretary Of The Navy Cavity/microstrip multi-mode antenna
EP0154858A2 (en) * 1984-03-15 1985-09-18 BROWN, BOVERI & CIE Aktiengesellschaft Antenna

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Pat. Abs. of Japan, Vol. 8, No. 99, E243, JP 59- *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2300760A (en) * 1995-04-13 1996-11-13 Northern Telecom Ltd A layered antenna

Also Published As

Publication number Publication date
GB2234120B (en) 1992-01-22
GB9015665D0 (en) 1990-10-03

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20040213