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GB2277408B - Radar - Google Patents

Radar

Info

Publication number
GB2277408B
GB2277408B GB8911146A GB8911146A GB2277408B GB 2277408 B GB2277408 B GB 2277408B GB 8911146 A GB8911146 A GB 8911146A GB 8911146 A GB8911146 A GB 8911146A GB 2277408 B GB2277408 B GB 2277408B
Authority
GB
United Kingdom
Prior art keywords
radar
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.)
Expired - Fee Related
Application number
GB8911146A
Other versions
GB2277408A (en
GB8911146D0 (en
Inventor
Stephen Philip Rowe
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.)
GE Healthcare UK Ltd
Plessey Co Ltd
BAE Systems Defence Systems Ltd
Original Assignee
GE Healthcare UK Ltd
Plessey Co Ltd
Siemens Plessey Electronic Systems 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 GE Healthcare UK Ltd, Plessey Co Ltd, Siemens Plessey Electronic Systems Ltd filed Critical GE Healthcare UK Ltd
Priority to GB8911146A priority Critical patent/GB2277408B/en
Publication of GB8911146D0 publication Critical patent/GB8911146D0/en
Publication of GB2277408A publication Critical patent/GB2277408A/en
Application granted granted Critical
Publication of GB2277408B publication Critical patent/GB2277408B/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
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/18—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces
    • H01Q19/19—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
    • H01Q19/195—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface wherein a reflecting surface acts also as a polarisation filter or a polarising device
    • 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
    • H01Q3/12—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems
    • H01Q3/16—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device
    • H01Q3/20—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device wherein the primary active element is fixed and the reflecting device is movable
GB8911146A 1989-05-16 1989-05-16 Radar Expired - Fee Related GB2277408B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8911146A GB2277408B (en) 1989-05-16 1989-05-16 Radar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8911146A GB2277408B (en) 1989-05-16 1989-05-16 Radar

Publications (3)

Publication Number Publication Date
GB8911146D0 GB8911146D0 (en) 1994-06-22
GB2277408A GB2277408A (en) 1994-10-26
GB2277408B true GB2277408B (en) 1995-03-08

Family

ID=10656766

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8911146A Expired - Fee Related GB2277408B (en) 1989-05-16 1989-05-16 Radar

Country Status (1)

Country Link
GB (1) GB2277408B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19952516A1 (en) * 1999-10-30 2001-06-07 Daimler Chrysler Ag Antenna has polarization dependent beam direction rotation of reflector allows scanning
US6307523B1 (en) * 2000-05-15 2001-10-23 Harris Corporation Antenna apparatus and associated methods
US8339326B2 (en) * 2008-10-20 2012-12-25 Ems Technologies, Inc. Antenna polarization control

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253100A (en) * 1979-02-02 1981-02-24 Thomson-Csf Inverse cassegrain antenna for multiple function radar
US4612550A (en) * 1982-04-02 1986-09-16 Thomson Csf Inverted Cassegrain antenna for multiple function radars
US4665405A (en) * 1983-12-30 1987-05-12 Thomson-Csf Antenna having two crossed cylindro-parabolic reflectors

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253100A (en) * 1979-02-02 1981-02-24 Thomson-Csf Inverse cassegrain antenna for multiple function radar
US4612550A (en) * 1982-04-02 1986-09-16 Thomson Csf Inverted Cassegrain antenna for multiple function radars
US4665405A (en) * 1983-12-30 1987-05-12 Thomson-Csf Antenna having two crossed cylindro-parabolic reflectors

Also Published As

Publication number Publication date
GB2277408A (en) 1994-10-26
GB8911146D0 (en) 1994-06-22

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Legal Events

Date Code Title Description
730A Proceeding under section 30 patents act 1977
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070516