Communications: radio wave antennas – Antennas – Microstrip
Patent
1988-02-04
1990-05-01
Hille, Rolf
Communications: radio wave antennas
Antennas
Microstrip
343705, 343829, 343853, H01Q 138, H01Q 2124
Patent
active
049222597
ABSTRACT:
A microstrap patch antenna with a substantially omni-directional radiation pattern includes an upper hemisphere microstrip patch radiator working against a ground plane and a lower hemisphere microstrip patch radiator working against a ground plane, the ground planes being oriented in close proximity and spaced apart from each other. One of the radiators is excited in left hand circular polarization and the other in right hand circular polarization such that their fields add constructively across their ground planes to achieve an omni-directional radiation pattern.
REFERENCES:
patent: 3478362 (1969-11-01), Ricardi et al.
patent: 4527163 (1985-07-01), Stanton
patent: 4709239 (1987-11-01), Herrick
Jasik, H., et al, Antenna Engineering Handbook 2nd Ed., New York, 1984.
Cranor Thomas H. B.
Hall Edward A.
Schmitt Gilbert J.
Finch George W.
Hille Rolf
Hudson, Jr. Benjamin
Johnson Doris J.
McDonnell Douglas Corporation
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