Wide bandwidth multiband feed system with polarization...

Details Wide bandwidth multiband feed system with polarization... Wide bandwidth multiband feed system with polarization...

H - Electricity

01

Q

351/26, 351/57

H01Q 5/00 (2006.01) H01P 1/16 (2006.01) H01P 1/161 (2006.01) H01P 1/213 (2006.01) H01Q 13/02 (2006.01)

Patent

CA 1260609

A WIDE BANDWIDTH MULTIBAND FEED SYSTEM WITH POLARIZATION DIVERSITY ABSTRACT A multiband feed system for a reflector antenna, capable of operating simultaneously at a plurality of separate bands of wide bandwidths and of having both frequency and polarization diversity, comprises a common tapered waveguide for carrying the frequency multiplexed bands and orthomode junctions spaced along the length of the waveguide for coupling signals in a single frequency band in and out of the waveguide. 90° and 180° narrowband polarization devices between the orthomode junctions and the orthomode transducers provide polarization diversity. A dual-depth corrugated flared horn operating in a beamwidth saturation mode with the feed system gives a radiation pattern with low cross-polarization content and nearly equalized subreflector illumination at all bands of operation.

518140

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