Double layer circularly polarized antenna with single feed

Details Double layer circularly polarized antenna with single feed Double layer circularly polarized antenna with single feed

1996-09-09

1997-12-30

Le, Hoanganh T.

Communications: radio wave antennas

Antennas

Microstrip

343770, 343846, H01Q 138

Patent

active

057036012

ABSTRACT:
A circularly polarized antenna is described having a ground plane and spa conductive patches parallel to it forming lower and upper cavities. The lower cavity is excited by a coax introduced at an impedance matching point in the ground plane, and the upper cavity is energized by apertures in the middle patch. The sides of the lower cavity from which radiation does not emanate are shorted to the ground plane, and the sides of the upper cavity from which radiation does not emanate as shorted to the middle patch.

REFERENCES:
patent: 4131892 (1978-12-01), Munson et al.
patent: 4131893 (1978-12-01), Munson et al.
patent: 4783661 (1988-11-01), Smith

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