Dielectric image-resonator multiplexer

Details Dielectric image-resonator multiplexer Dielectric image-resonator multiplexer

H - Electricity

03

H

333/16, 363/8

H03H 9/70 (2006.01) H01P 1/208 (2006.01) H01P 1/213 (2006.01) H01P 7/10 (2006.01) H04J 1/02 (2006.01)

Patent

CA 1251835

ABSTRACT A two, three or four channel multiplexer can be operated in the TE01.delta. or HE11.delta. modes, each channel of the multiplexer has one bandpass filter, with each filter usually having a plurality of cavities. One cavity of each filter is a common cavity with all of the other filters of the multiplexer. The common cavity contains one independent dielectric quarter-cut or half-cut image resonator for each filter representing a channel of the multiplexer. Each resonator is mounted on a support the common cavity provides a common junction and contains a loop coupling to couple electromagnetic energy between the various channels. The multiplexer has at least one input and at least one output. Previous microwave multiplexers have a plurality of bandpass filters arranged on a coaxial manifold. With the multiplexer of the present invention, the manifold can be eliminated. Further, at the S-band or L-band, substantial weight and volume savings can be achieved using the multiplexer of the present invention without sacrificing performance. This can be very important for space applications.

563315

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