Circularly polarized array antenna

Details Circularly polarized array antenna Circularly polarized array antenna

2007-09-18

2007-09-18

Chen, Shih-Chao (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S770000

Reexamination Certificate

active

11229544

ABSTRACT:
The invention relates to a circularly polarized array antenna for receiving and transmitting a circularly polarized signal. The circularly polarized array antenna comprises: a plurality of circularly polarized antennas with phase shift mechanism for receiving circularly polarized signals and transmitting the circularly polarized signals; a plurality of power lines which differ from each other in length and are coupled to the circularly polarized antennas respectively; and a power divider coupled to the power lines for receiving the circularly polarized signals. Wherein each of the circularly polarized antennas comprises a plurality of antenna elements and each comprises a microstrip antenna and a slot coupling apparatus.

REFERENCES:
patent: 6642908 (2003-11-01), Pleva et al.
patent: 7075485 (2006-07-01), Song et al.

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