BE712495A - - Google Patents

Info

Publication number
BE712495A
BE712495A BE712495DA BE712495A BE 712495 A BE712495 A BE 712495A BE 712495D A BE712495D A BE 712495DA BE 712495 A BE712495 A BE 712495A
Authority
BE
Belgium
Application number
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 filed Critical
Publication of BE712495A publication Critical patent/BE712495A/xx

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/02—Antennas or antenna systems providing at least two radiating patterns providing sum and difference patterns
BE712495D 1967-03-22 1968-03-20 BE712495A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6704219A NL6704219A (en) 1967-03-22 1967-03-22

Publications (1)

Publication Number Publication Date
BE712495A true BE712495A (en) 1968-07-31

Family

ID=19799640

Family Applications (1)

Application Number Title Priority Date Filing Date
BE712495D BE712495A (en) 1967-03-22 1968-03-20

Country Status (9)

Country Link
US (1) US3550135A (en)
BE (1) BE712495A (en)
CH (1) CH473488A (en)
DE (1) DE1766002B1 (en)
FR (1) FR1556858A (en)
GB (1) GB1182724A (en)
NL (1) NL6704219A (en)
NO (1) NO127476B (en)
SE (1) SE323725B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3680143A (en) * 1970-07-01 1972-07-25 Hughes Aircraft Co Shaped beam antenna
FR2177564B1 (en) * 1972-03-29 1974-08-02 Nathan Guy
US4097868A (en) * 1976-12-06 1978-06-27 The United States Of America As Represented By The Secretary Of The Army Antenna for combined surveillance and foliage penetration radar
US4095230A (en) * 1977-06-06 1978-06-13 General Dynamics Corporation High accuracy broadband antenna system
FR2445629A1 (en) * 1978-12-27 1980-07-25 Thomson Csf COMMON ANTENNA FOR PRIMARY RADAR AND SECONDARY RADAR
FR2474770A2 (en) * 1978-12-27 1981-07-31 Thomson Csf Common antenna for primary and secondary radar - uses totally integrated radiating waveguides generating linearly, circularly or elliptically polarised waves
IT1166889B (en) * 1979-06-14 1987-05-06 Contraves Italiana Spa ARRANGEMENT OF INTEGRATED ANTENNAS FOR RADAR EQUIPMENT THAT ALLOWS THE CONTEMPORARY GENERATION OF TWO OR MORE IRRADIATION DIAGRAMS, ONE DIFFERENT FROM THE OTHER
EP0033676B1 (en) * 1980-01-28 1985-05-02 Thomson-Csf Common antenna for primary radar and secondary radar
DE9014875U1 (en) * 1990-10-27 1991-01-10 Kabelmetal Electro Gmbh, 30179 Hannover Antenna with a parabolic reflector
US5187491A (en) * 1991-01-29 1993-02-16 Raytheon Company Low sidelobes antenna
FR2691581B1 (en) * 1992-05-19 1994-08-26 Thomson Csf Low cost and space-saving microwave antenna for vehicle transmitter and / or receiver system.
US5835057A (en) * 1996-01-26 1998-11-10 Kvh Industries, Inc. Mobile satellite communication system including a dual-frequency, low-profile, self-steering antenna assembly
DE19859120C1 (en) * 1998-12-21 2000-03-23 Howaldtswerke Deutsche Werft Aerial assembly for satellite communication installations on ships and submarines uses small, level planar aerials as satellite aerials fitted on the rear side with a radar aerial.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2653238A (en) * 1945-10-26 1953-09-22 Kenneth T Bainbridge Dual frequency antenna
US2895127A (en) * 1954-07-20 1959-07-14 Rca Corp Directive diplex antenna
US2846678A (en) * 1955-06-09 1958-08-05 Sanders Associates Inc Dual frequency antenna
US3164835A (en) * 1962-06-07 1965-01-05 Bell Telephone Labor Inc Alignment of microwave antenna
US3245081A (en) * 1963-02-08 1966-04-05 Hughes Aircraft Co Multiple feed wide angle antenna utilizing biconcave spherical delay lens
US3276022A (en) * 1964-05-13 1966-09-27 Aeronca Mfg Corp Dual frequency gregorian-newtonian antenna system with newtonian feed located at common focus of parabolic main dish and ellipsoidal sub-dish
US3445850A (en) * 1965-11-08 1969-05-20 Canoga Electronics Corp Dual frequency antenna employing parabolic reflector

Also Published As

Publication number Publication date
FR1556858A (en) 1969-02-07
NL6704219A (en) 1968-09-23
DE1766002B1 (en) 1971-03-04
US3550135A (en) 1970-12-22
NO127476B (en) 1973-06-25
SE323725B (en) 1970-05-11
CH473488A (en) 1969-05-31
GB1182724A (en) 1970-03-04

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Legal Events

Date Code Title Description
RE20 Patent expired

Owner name: N.V. HOLLANDSE SIGNAALAPPARATEN

Effective date: 19880320