GB8918803D0 - Cassegrain antenna - Google Patents

Cassegrain antenna

Info

Publication number
GB8918803D0
GB8918803D0 GB898918803A GB8918803A GB8918803D0 GB 8918803 D0 GB8918803 D0 GB 8918803D0 GB 898918803 A GB898918803 A GB 898918803A GB 8918803 A GB8918803 A GB 8918803A GB 8918803 D0 GB8918803 D0 GB 8918803D0
Authority
GB
United Kingdom
Prior art keywords
cassegrain antenna
cassegrain
antenna
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.)
Withdrawn
Application number
GB898918803A
Other versions
GB2234858A (en
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.)
EMI Group Electronics Ltd
Original Assignee
Thorn EMI Electronics 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 Thorn EMI Electronics Ltd filed Critical Thorn EMI Electronics Ltd
Publication of GB8918803D0 publication Critical patent/GB8918803D0/en
Publication of GB2234858A publication Critical patent/GB2234858A/en
Withdrawn legal-status Critical Current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
    • H01Q19/06—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 refracting or diffracting devices, e.g. lens
    • 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
GB8918803A 1988-09-02 1989-08-17 Cassegrain antenna Withdrawn GB2234858A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8821678 1988-09-02

Publications (2)

Publication Number Publication Date
GB8918803D0 true GB8918803D0 (en) 1990-11-21
GB2234858A GB2234858A (en) 1991-02-13

Family

ID=10643660

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8918803A Withdrawn GB2234858A (en) 1988-09-02 1989-08-17 Cassegrain antenna

Country Status (3)

Country Link
DE (1) DE3930497A1 (en)
FR (1) FR2661562A1 (en)
GB (1) GB2234858A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112585819A (en) * 2018-08-08 2021-03-30 上海诺基亚贝尔股份有限公司 Antenna with a shield

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7855691B2 (en) 2008-08-07 2010-12-21 Toyota Motor Engineering & Manufacturing North America, Inc. Automotive radar using a metamaterial lens
CN104234544A (en) 2009-05-29 2014-12-24 艾可品牌美国有限公司 Security device with attachment means
EP2772988A4 (en) * 2011-10-27 2015-09-09 Kuang Chi Innovative Tech Ltd Metamaterial antenna
CN103094710B (en) * 2011-10-27 2016-06-29 深圳光启高等理工研究院 Super-material antenna

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL272152A (en) * 1960-12-27
US3231893A (en) * 1961-10-05 1966-01-25 Bell Telephone Labor Inc Cassegrainian antenna with aperture blocking compensation
US3231892A (en) * 1962-06-26 1966-01-25 Philco Corp Antenna feed system simultaneously operable at two frequencies utilizing polarization independent frequency selective intermediate reflector
GB1305117A (en) * 1970-07-13 1973-01-31
GB2108326A (en) * 1981-10-24 1983-05-11 British Aerospace Antennas
FR2535906B1 (en) * 1982-11-05 1985-09-20 Thomson Csf DUAL REFLECTOR ANTENNA FOR TRACKING RADAR FOR IMPROVING ACQUISITION
SU1133632A1 (en) * 1983-10-28 1985-01-07 Московский Ордена Ленина И Ордена Октябрьской Революции Авиационный Институт Им.Серго Орджоникидзе Cassegrainian aerial

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112585819A (en) * 2018-08-08 2021-03-30 上海诺基亚贝尔股份有限公司 Antenna with a shield

Also Published As

Publication number Publication date
DE3930497A1 (en) 1991-05-08
GB2234858A (en) 1991-02-13
FR2661562A1 (en) 1991-10-31

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)