Planar single feed circularly polarized microstrip antenna with

Details Planar single feed circularly polarized microstrip antenna with Planar single feed circularly polarized microstrip antenna with

1999-03-29

2000-12-26

Le, Hoanganh

Communications: radio wave antennas

Antennas

Microstrip

343770, 343829, H01Q 138

Patent

active

061666920

ABSTRACT:
A microstrip antenna providing circularly polarized radiation formed by two layered cavities with two rectangular conductive patches. A first cavity s formed by a ground plane and a first rectangular conductive patch having a lateral dimension and coupling holes placed therein. A second cavity is formed between the first rectangular conductive path and a second rectangular conductive patch having a longitudinal dimension. The longitudinal dimension of the second rectangular conductive patch is essentially equal to the lateral dimension of the first rectangular conductive patch. The second rectangular conductive patch is coupled through the coupling holes to the first rectangular conductive patch, resulting in circularly polarized radiation. The circularly polarized antenna can easily be manufactured using conventional microstrip techniques. Additionally, bandwidth and power are improved. The antenna has many applications, including military and commercial communication systems, aircraft antennas and global positioning system receivers.

REFERENCES:
patent: 5003318 (1991-03-01), Berneking et al.
patent: 5382959 (1995-01-01), Pett et al.
patent: 5408241 (1995-04-01), Shattuck, Jr. et al.
patent: 5646634 (1997-07-01), Bokhari et al.
patent: 5703601 (1997-12-01), Nalbandian et al.

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