Communications: radio wave antennas – Antennas – Microstrip
Patent
1993-08-31
1994-12-06
Hajec, Donald
Communications: radio wave antennas
Antennas
Microstrip
343767, 343846, H01Q 138, H01Q 1310
Patent
active
053715071
ABSTRACT:
A planar antenna comprised of a ground conductor, a dielectric layer laminated on the ground conductor, and a rectangular radiation element laminated on the dielectric layer on its surface opposing to the ground conductor, wherein a rectangular opening is concentrically formed through the radiation element so as to provide a ring radiation element and a feed point is disposed near a center of one side of the opening.
REFERENCES:
patent: 4060810 (1977-11-01), Kerr et al.
patent: 4827271 (1989-05-01), Berneking et al.
patent: 4987421 (1991-01-01), Sunahara et al.
patent: 5055852 (1991-10-01), Dusseux et al.
patent: 5233360 (1993-08-01), Kuroda et al.
IEEE Transactions on Antennas and Propagation, vol. 31, No. 6, Nov. 1983, New York, US, pp. 949-955, Sharma et al. `Analysis and Optimized Design of Single Feed Circularly Polarized Microstrip Antennas`, p. 950.
IEEE Transactions on Antennas and Propagation, vol. 34, No. 11, Nov. 1986, New York, US, pp. 1340-1346, Palanisamy et al. `Analysis of Circularly Polarized Square Ring and Crossed-Strip Microstrip Antennas`, pp. 1340-1343; figures 1-6.
Kuroda Shin-ichi
Ono Noboru
Toriyama Ichiro
Hajec Donald
Le Hoang-anh
Maioli Jay H.
Sony Corporation
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