EP0141281A3 - Device for preventing a main beam parallax in a circularly polarized antenna camprising a curved reflector and an off-set primary radiating element - Google Patents

Device for preventing a main beam parallax in a circularly polarized antenna camprising a curved reflector and an off-set primary radiating element Download PDF

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Publication number
EP0141281A3
EP0141281A3 EP84111833A EP84111833A EP0141281A3 EP 0141281 A3 EP0141281 A3 EP 0141281A3 EP 84111833 A EP84111833 A EP 84111833A EP 84111833 A EP84111833 A EP 84111833A EP 0141281 A3 EP0141281 A3 EP 0141281A3
Authority
EP
European Patent Office
Prior art keywords
camprising
preventing
circularly polarized
radiating element
main beam
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Withdrawn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
EP84111833A
Other languages
German (de)
French (fr)
Other versions
EP0141281A2 (en
Inventor
Uwe Dipl.-Ing. Leupelt
Anton Dipl.-Ing. Giefing
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0141281A2 publication Critical patent/EP0141281A2/en
Publication of EP0141281A3 publication Critical patent/EP0141281A3/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Withdrawn legal-status Critical Current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
    • H01Q19/10—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
    • H01Q19/12—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 wherein the surfaces are concave
    • H01Q19/13—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 wherein the surfaces are concave the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
    • H01Q19/132—Horn reflector antennas; Off-set feeding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/04—Multimode antennas

Abstract

Im Zuführungshohlleiter (7) zum Antennenhornstrahler (8) werden mittels eines einen äußeren Signaleingang (5) aufweisenden Modenkopplers (6) Wellen eines im Vergleich zur Grundwelie höheren Wellentyps eingekoppelt, die gegenphasig die gleiche Amplitude haben wie Wellen desje­ nigen Wellentyps, der die gleiche störende Strahlungskeule­ nauslenkung hervorrufen würde, wie der gekrümmte Reflek­ tor sie tatsächlich verursacht. Der Modenkoppler wird am äußeren Signaleingang von einem Korrektursignal beauf­ schlagt, das vom Grundwellensignal im Zuführungshohllei­ ter mittels eines Kopplers (3) abgeleitet und in einem Korrektursignalweg mittels eines Korrekturnetzwerks (4) phasen- und amplitudenmäßig passend eingestellt wird, so daß eine breitbandige Anregung der gegenphasigen Kom­ pensationswelle möglich ist. Die Einrichtung nach der Erfin­ dung ist zur Anwendung bei Satelliten- und Richtfunkanten­ nen geeignet. In the feed waveguide (7) to the antenna horn (8) are by means of an external signal input (5) having mode coupler (6) waves in comparison coupled to the bottom of the higher wave type, the have the same amplitude in opposite phases as waves some wave type, which has the same disturbing radiation lobe would cause deflection, like the curved reflect tor actually caused it. The mode coupler is on external signal input from a correction signal strikes that from the fundamental wave signal in the feed cavity ter derived by means of a coupler (3) and in one Correction signal path by means of a correction network (4) is adjusted appropriately in terms of phase and amplitude, so that a broadband excitation of the antiphase com pensationswelle is possible. The device according to the inven is for use by satellite and directional radio operators suitable.

EP84111833A 1983-10-06 1984-10-03 Device for preventing a main beam parallax in a circularly polarized antenna camprising a curved reflector and an off-set primary radiating element Withdrawn EP0141281A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833336452 DE3336452A1 (en) 1983-10-06 1983-10-06 DEVICE FOR PREVENTING RADIATION DIFFERENTIATION IN AN ANTENNA PROVIDED FOR CIRCULAR POLARISATION WITH A CURVED REFLECTOR AND A SIDE-RADIATING PRIME RADIATOR
DE3336452 1983-10-06

Publications (2)

Publication Number Publication Date
EP0141281A2 EP0141281A2 (en) 1985-05-15
EP0141281A3 true EP0141281A3 (en) 1986-07-30

Family

ID=6211205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84111833A Withdrawn EP0141281A3 (en) 1983-10-06 1984-10-03 Device for preventing a main beam parallax in a circularly polarized antenna camprising a curved reflector and an off-set primary radiating element

Country Status (2)

Country Link
EP (1) EP0141281A3 (en)
DE (1) DE3336452A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2854503B1 (en) * 2003-04-30 2006-12-15 Cit Alcatel SATELLITE WITH MULTI-ZONES COVERAGE PROVIDED BY BEAM DEVIATION

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1449265A (en) * 1965-10-05 1966-08-12 Ass Elect Ind Improvements in microwave beam exploration devices
DE1953083A1 (en) * 1968-10-28 1970-05-14 Hughes Aircraft Co Horn antenna
GB1525514A (en) * 1975-10-29 1978-09-20 Rudge A Primary feeds for offset parabolic reflector antennas

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3413642A (en) * 1966-05-05 1968-11-26 Bell Telephone Labor Inc Dual mode antenna
CA890032A (en) * 1970-08-10 1972-01-04 Wu Chuang-Jy Microwave horn-paraboloidal antenna
JPS544049A (en) * 1977-06-13 1979-01-12 Nippon Telegr & Teleph Corp <Ntt> Offset antenna

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1449265A (en) * 1965-10-05 1966-08-12 Ass Elect Ind Improvements in microwave beam exploration devices
DE1953083A1 (en) * 1968-10-28 1970-05-14 Hughes Aircraft Co Horn antenna
GB1525514A (en) * 1975-10-29 1978-09-20 Rudge A Primary feeds for offset parabolic reflector antennas

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
NTG-FACHBERICHTE, "ANTENNEN", NTG-Fachtagung, 8.-11. März 1977, Bad Nauheim, DE, Band 57, Seiten 86-90, VDE-Verlag GmbH, Berlin, DE; G. MÖRZ: "Ein neues Mehrmoden-Speisesystem zur elektrisch gesteuerten Strahlschwenkung bei parabolischen Reflektorantennen" *
PATENTS ABSTRACTS OF JAPAN, Band 3, Nr. 26 (E-95), 6. March 1979, Seite 15 E 95; & JP-A-54 004 049 (NIPPON DENSHIN DENWA KOSHA) 01-12-1979 *

Also Published As

Publication number Publication date
DE3336452A1 (en) 1985-05-02
EP0141281A2 (en) 1985-05-15
DE3336452C2 (en) 1987-09-24

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Inventor name: GIEFING, ANTON, DIPL.-ING.

Inventor name: LEUPELT, UWE, DIPL.-ING.