Dual circularly polarized antenna system and a method of...

Communications: radio wave antennas – Antennas – Microstrip

Reexamination Certificate

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Reexamination Certificate

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07864118

ABSTRACT:
An antenna system and a method for communicating signals by a dual circularly polarized antenna system are provided. The antenna system includes a substantially straight microstrip segment and a plurality of substantially straight microstrip projections. The plurality of microstrip projections extend from the microstrip segment in pairs at a predetermined angle, wherein each microstrip projection of the pair of microstrip projections extends from substantially the same location on the microstrip segment. A first microstrip projection extends from the microstrip segment on a first side of the microstrip segment and a second microstrip projection extends from the microstrip segment on a second side of the microstrip segment, such that the first and second microstrip projections at least one of emit and receive circularly polarized radiation in a first direction and circularly polarized radiation in a second direction simultaneously.

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David J. Jefferies, The Fishbone Antenna a Simple Slow Wave Structure Implementation, Jan. 2007, pp. 1-11.

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