Multi-band coaxial ring-focus antenna with co-located...

Details Multi-band coaxial ring-focus antenna with co-located... Multi-band coaxial ring-focus antenna with co-located...

2005-08-30

2005-08-30

Nguyen, Hoang V. (Department: 2821)

Communications: radio wave antennas

Antennas

Wave guide type

C343S7810CA

Reexamination Certificate

active

06937201

ABSTRACT:
A multi-band ring focus antenna system includes a main reflector (408) that is operable at a plurality spectrally offset frequency bands. A first feed (301, 403) includes a first feed horn (301) and a first sub-reflector (403), which are positioned spaced apart from each other at respective locations along a boresight axis of the main reflector. The locations are selected so that the first feed horn and the first sub-reflector share a commonly located first phase center (401). A second feed (302, 404) designed for operation on a second RF frequency band includes a second feed horn (302) and a second sub-reflector (404), each positioned at a location along the boresight axis of the main reflector so that they share a commonly located second phase center.

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U.S. Appl. No. 10/231,933, filed Aug. 29, 2002, Gothard et al.
U.S. Appl. No. 10/600,627, filed Jun. 20, 2003, Gothard et al.

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