Antennas with means for blocking current in ground planes

Details Antennas with means for blocking current in ground planes Antennas with means for blocking current in ground planes

1994-12-08

1996-09-24

Hajec, Donald T.

Communications: radio wave antennas

Antennas

Microstrip

343846, H01Q 138

Patent

active

055595219

ABSTRACT:
Dielectric components extend between top and bottom surfaces of a ground plane in a resonant microstrip patch antenna over a distance of one-quarter-wavelength of a resonant frequency of the antenna. The components form quarter-wave chokes within which waves cancel with reflected waves and reduce currents in the bottom surfaces of the ground plane. This reduces back lobe responses.

REFERENCES:
patent: 4131894 (1978-12-01), Schiavone
patent: 4170013 (1979-10-01), Black
patent: 4197544 (1980-04-01), Kaloi
patent: 4364050 (1982-12-01), Lopez
patent: 4477813 (1984-10-01), Weiss
patent: 4623893 (1986-11-01), Sabban
patent: 4719470 (1988-01-01), Munson
patent: 5155493 (1992-10-01), Thursby et al.
patent: 5227749 (1993-07-01), Raguenet et al.
patent: 5307075 (1994-04-01), Huynh
patent: 5408241 (1995-04-01), Shattuck, Jr. et al.

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