Communications: radio wave antennas – Antennas – Microstrip
Patent
1997-06-30
2000-07-18
Font, Frank G.
Communications: radio wave antennas
Antennas
Microstrip
343846, H01Q 138
Patent
active
060913649
ABSTRACT:
A patch having a circular shape for instance is formed on the main surface of a substrate in the shape of, for example, an equilateral triangle. The center of the main surface of the patch is at a position different from the center of the substrate. A grounding conductor is disposed on the backside of the substrate. Power is supplied to the patch through, for example, a microstrip line, triplate line, coplanar waveguide, slot line or the like. An antenna configured as described above has the center of the patch at a position different from the center of the triangle substrate, so that beams can be tilted in a desired direction by a single patch and a single feeder circuit.
REFERENCES:
patent: 4329689 (1982-05-01), Yee
patent: 4389651 (1983-06-01), Tomasky
patent: 5043738 (1991-08-01), Shapiro et al.
patent: 5543811 (1996-08-01), Chethik
R. Mittra, et al., "Microstrip Patch Antennas for GPS Applications," Antennas Propagat. Digest, IEEE AP-S Intl. Symp., IEEE, May 1993.
N. Terada, Autumn Meetings of Electronic Information Communication Society (Japan), B-84, p. 2-84, 1992, "Mode Synthesized Annular Ring Microstrip With Squint Beam".
Iwasaki Hisao
Matsuoka Hidehiro
Murakami Yasushi
Shoki Hiroki
Tsujimura Akihiro
Font Frank G.
Kabushiki Kaisha Toshiba
Nguyen Tu T.
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