Communications: radio wave antennas – Antennas – Wave guide type
Reexamination Certificate
2005-06-28
2005-06-28
Vo, Tuyet (Department: 2821)
Communications: radio wave antennas
Antennas
Wave guide type
C343S7810CA, C343S779000
Reexamination Certificate
active
06911953
ABSTRACT:
A compact multi-band ring-focus antenna system. The antenna system includes a first and a second main reflector304, 306,each having a shaped surface of revolution about a common boresight axis (322) of the antenna. A first backfire type RF feed system (302, 312) is provided for feeding the first main reflector (304) on a first frequency band. A second RF feed (301) coaxial with the first RF feed (300) is provided for feeding the second main reflector (306) on a second frequency band spectrally offset from the first frequency band. Further a portion of the second RF feed passes through a first sub-reflectors (302) of the backfire feed. The second RF feed is terminated a distance from the first sub-reflector to illuminate a second sub-reflector (303).
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Durham Timothy E.
Gothard Griffin K.
Kralovec Jay A.
Ortiz Sean C.
Harris Corporation
Sacco & Associates PA
Vo Tuyet
Vy Hung Tran
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