Reflector-type microwave antennas with absorber lined...

Details Reflector-type microwave antennas with absorber lined... Reflector-type microwave antennas with absorber lined...

H - Electricity

01

Q

351/28

H01Q 13/02 (2006.01) H01Q 17/00 (2006.01) H01Q 19/13 (2006.01)

Patent

CA 1185696

Abstract Of The Disclosure A feed horn for a reflector-type microwave antenna comprises a smooth-walled conical horn and a lining of absorber material on the inside wall of the horn for reducing the width of the RPE (radiation pattern envelope) in the E plane of the antenna. The lining of absorber material extends from the wide end of the conical feed toward the narrow end thereof, terminating at a point where the horn diameter is about 7 times the longest wavelength of the microwave signals being transmitted. The width of the RPE in the E-plane of the antenna can be reduced to be nearly equal to the width of the RPE of the H-plane of the antenna without significantly degrading this H-plane RPE from its shape without absorber and without significantly changing the gain of the antenna.

403673

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