BE771448A - Antenne cassegrain a energie de debordement limitee - Google Patents

Antenne cassegrain a energie de debordement limitee

Info

Publication number
BE771448A
BE771448A BE771448A BE771448A BE771448A BE 771448 A BE771448 A BE 771448A BE 771448 A BE771448 A BE 771448A BE 771448 A BE771448 A BE 771448A BE 771448 A BE771448 A BE 771448A
Authority
BE
Belgium
Prior art keywords
breakage
antenna
overflow energy
limited overflow
limited
Prior art date
Application number
BE771448A
Other languages
English (en)
Inventor
Cie Generale D'electricite. La
Original Assignee
Cit Alcatel
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 Cit Alcatel filed Critical Cit Alcatel
Publication of BE771448A publication Critical patent/BE771448A/fr

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
    • H01Q19/02—Details
    • H01Q19/021—Means for reducing undesirable effects
    • H01Q19/026—Means for reducing undesirable effects for reducing the primary feed spill-over
BE771448A 1970-08-28 1971-08-18 Antenne cassegrain a energie de debordement limitee BE771448A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7031536A FR2101144B1 (fr) 1970-08-28 1970-08-28

Publications (1)

Publication Number Publication Date
BE771448A true BE771448A (fr) 1972-02-18

Family

ID=9060697

Family Applications (1)

Application Number Title Priority Date Filing Date
BE771448A BE771448A (fr) 1970-08-28 1971-08-18 Antenne cassegrain a energie de debordement limitee

Country Status (6)

Country Link
US (1) US3706999A (fr)
BE (1) BE771448A (fr)
DE (1) DE2141047A1 (fr)
FR (1) FR2101144B1 (fr)
LU (1) LU63757A1 (fr)
NL (1) NL7111608A (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983560A (en) * 1974-06-06 1976-09-28 Andrew Corporation Cassegrain antenna with improved subreflector for terrestrial communication systems
DE2920781C2 (de) * 1979-05-22 1984-07-12 Siemens AG, 1000 Berlin und 8000 München Reflektorantenne, bestehend aus einem Hauptreflektor, einem Primärstrahler und einem Subreflektor
DE2954351C2 (de) * 1979-05-22 1986-07-17 Siemens AG, 1000 Berlin und 8000 München Reflektorantenne
US6778810B1 (en) * 1999-12-03 2004-08-17 The Directtv Group, Inc. Method and apparatus for mitigating interference from terrestrial broadcasts sharing the same channel with satellite broadcasts using an antenna with posterior sidelobes
US7369809B1 (en) 2000-10-30 2008-05-06 The Directv Group, Inc. System and method for continuous broadcast service from non-geostationary orbits
US6611238B1 (en) 2001-11-06 2003-08-26 Hughes Electronics Corporation Method and apparatus for reducing earth station interference from non-GSO and terrestrial sources
US6975837B1 (en) 2003-01-21 2005-12-13 The Directv Group, Inc. Method and apparatus for reducing interference between terrestrially-based and space-based broadcast systems

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3209361A (en) * 1963-01-14 1965-09-28 James E Webb Cassegrainian antenna subreflector flange for suppressing ground noise
US3430244A (en) * 1964-11-25 1969-02-25 Radiation Inc Reflector antennas
GB1190566A (en) * 1966-07-04 1970-05-06 Post Office Aerials

Also Published As

Publication number Publication date
LU63757A1 (fr) 1972-04-04
DE2141047A1 (de) 1972-03-02
US3706999A (en) 1972-12-19
FR2101144A1 (fr) 1972-03-31
NL7111608A (fr) 1972-03-01
FR2101144B1 (fr) 1973-11-23

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