Planar, phased array antenna

Details Planar, phased array antenna Planar, phased array antenna

1994-04-08

1995-05-23

Hajec, Donald

Communications: radio wave antennas

Antennas

Microstrip

343770, H01Q 138

Patent

active

054185416

ABSTRACT:
A planar, phased array antenna includes a ground plate, a signal plate having a plurality of active elements and conductive branches electrically connecting said active elements in mirror symmetrical pairs, an aperture plate having a plurality of apertures oriented in the same direction and aligned with said active elements to provide electromagnetic coupling between each active element and the corresponding aperture, and spacers between the plates. The ground plate is formed on a first spacer, e.g. by screen printing, and the aperture plate is formed on the other spacer, e.g. by screen printing. The signal plate includes an insulating substrate and a patterned conductive layer on said substrate. Alternatively, the aperture plate is separate from the other spacer and includes an insulating substrate and a patterned conductive layer on the substrate.

REFERENCES:
patent: Re29911 (1979-02-01), Munson
patent: 3587110 (1971-06-01), Woodward
patent: 4191959 (1980-03-01), Kerr
patent: 4410891 (1983-10-01), Schaubert et al.
patent: 4686535 (1987-08-01), Lalezari
patent: 4713670 (1987-12-01), Makimoto et al.
patent: 4816835 (1989-03-01), Abiko et al.
patent: 4829309 (1989-05-01), Tsukamoto et al.
patent: 4857938 (1989-08-01), Tsukamoto et al.
patent: 4914445 (1990-04-01), Shoemaker
patent: 4937585 (1990-06-01), Shoemaker
patent: 5223848 (1993-06-01), Rammos et al.
patent: 5270721 (1993-12-01), Tsukamoto et al.
patent: 5278569 (1994-01-01), Ohta et al.

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