Title: Chebyshev filtering character frequency selecting surface
Application Number: 200610096791 Application Date: 2006.10.17
Publication Number: 1949586 Publication Date: 2007.04.18
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H01P1/207;H01P1/20
Applicant(s) Name: Dongnan Univ. Address:
Inventor(s) Name: Hong Wei;Luo Guoqing
Attorney & Agent: yelian sheng
Abstract:
    The invention is a Chebyshew filter characteristic frequency selection surface, able to act as frequency range multiplexer applied to multifrequency antennas of satellites, radars and other communication systems, characterized in pressing two layers of microwave plates into a multilayer substrate of the frequency selection surface, where the multilayer substrate comprises top and bottom metal surfaces and intermediate metal surface, where top and bottom medium layers are filled between the threee metal surfaces; besides, making large square annular slots of the same size on the top and bottom metal surfaces, and etching small square annular slots of the other size on the intermediate metal surface, which coincides with the centers of the large square annular slots; finally arranging a series of metalized through holes at regular intervals around each periodical square annular slot unit on the ready-laminated substrate and forming a substrate integrated waveguide cavity equivalent to traditional metal cavity. And the structure has stable pass band and selectivity for variation of angle and polarity of incident wave.
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