Communications: radio wave antennas – Antennas – Slot type
Patent
1989-07-31
1991-10-29
Wimer, Michael C.
Communications: radio wave antennas
Antennas
Slot type
343776, 343778, 343789, 343829, H01Q 138, H01Q 2100
Patent
active
050619438
ABSTRACT:
A planar antenna of the kind comprising feed lines disposed in a flat circuit and cooperating by hyperfrequency coupling with a metal ground plane plate pierced by apertures has the feed lines presenting a termination juxtaposed with each aperture. A lower ground plane plate is disposed at a distance of approximately a quarter wavelength from the apertured metal plate. The apertured metal plate comprises a metal coating deposited on a dielectric substrate. The feed line comprise central conductors disposed in channels which open into the apertures. The array of apertures, channels and conductors can be produced on the dielectric substate by single face printed circuit techniques. The antenna may be used for the reception of direct broadcasts from satellites.
REFERENCES:
patent: 4063246 (1977-12-01), Greiser
patent: 4291312 (1979-08-01), Kaloi
patent: 4486758 (1984-12-01), de Ronde
patent: 4719470 (1985-05-01), Munson
Conference Proceedings, 12th European Microwave Conference, Helsinki 13-17 Sep. 1982, pp. 478-482, Microwave Exhibitions Ltd.
Electronics Letters, vol. 18, No. 6, Mar. 1982, pp. 252-253, London, GB; E. Rammos.
Agence Spatiale Europenne
Wimer Michael C.
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