Broadband cavity-like array antenna element and a conformal arra

Details Broadband cavity-like array antenna element and a conformal arra Broadband cavity-like array antenna element and a conformal arra

1993-11-16

1995-07-18

Hajec, Donald

Communications: radio wave antennas

Antennas

Microstrip

343846, 343789, H01Q 138, H01Q 142

Patent

active

054345812

ABSTRACT:
The invention concerns a broadband antenna element for array antennas using microstrip technology. In accordance with the invention, an etched patch 2 on a dielectric substrate 1 is disposed at the bottom of a cavity 7 defined by conductive walls 8, cylindrical walls, for example, or walls of more complicated geometry. Depending on the embodiment, the conductive walls 8 can extend through the dielectric substrate 1 to form an electric contact with the ground plane 6 or a second resonator comprising a second etched patch 12 on a second thin dielectric substrate 11 may be placed in front of the cavity 7. The invention also applies to antenna subarrays constructed from a plurality of these antenna elements and to array antennas constructed from a plurality of these subarrays.

REFERENCES:
patent: 4131894 (1978-12-01), Schiavone
patent: 4197544 (1980-04-01), Kaloi
patent: 4605932 (1986-08-01), Butscher et al.
patent: 4709240 (1987-11-01), Bordenave
patent: 4816836 (1989-03-01), Lalezari
patent: 4990926 (1991-02-01), Otsuka et al.
patent: 5087920 (1992-02-01), Tsurumaru et al.
patent: 5124713 (1992-06-01), Mayes
patent: 5210542 (1993-05-01), Pett et al.
Japanese Patent Abstract JP 1-34002 dated Feb. 3, 1989.
A. Sabban et al, "A New Broadband Stacked two-Layer Microstrip Antenna" IEEE Transactions on Antennas and Propagation, 1983, pp. 63-66.

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