Dual band hybrid solid/dichroic antenna reflector

Details Dual band hybrid solid/dichroic antenna reflector Dual band hybrid solid/dichroic antenna reflector

1999-09-08

2000-10-31

Ho, Tan

Communications: radio wave antennas

Antennas

Antenna components

343756, 343781P, H01Q 1502, H01Q 1900

Patent

active

061409782

ABSTRACT:
A spaceborne hybrid antenna reflector for dual frequency band illumination of common spot beam coverage regions contains an interior solid reflector region, that is adjacent at its perimeter to a ring-shaped exterior dichroic reflector region and adjoined by a common backing structure. The solid interior region is reflective to RF energy at each of first and second spaced apart frequency bands, while the exterior dichroic reflector region is reflective at the first frequency band, but non-reflective at the second frequency band. This allows the hybrid reflector to realize the same beamwidth coverage for a transmitter operating at one frequency band and a receiver operating at the other frequency band. The backing support frame at the rear side of the reflector is electrically decoupled from the exterior dichroic ring.

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