Quadruple mode filter

Details Quadruple mode filter Quadruple mode filter

H - Electricity

03

H

333/69

H03H 7/12 (2006.01) H01P 1/208 (2006.01)

Patent

CA 1218122

ABSTRACT A quadruple mode band pass filter has at least one cavity resonating in four independent orthogonal modes simultaneously. Preferably, the filter has two cavities, one cavity being a quadruple mode cavity and the remaining cavity being either a single mode, dual mode, triple mode or quadruple mode cavity. By introducing a resonant feedback coupling into filters of the present invention, the number of transmission zeros produced by the filter is equal to the order of the filter. Previous filters have cavities resonating in either a single, dual or triple mode and the maximum number of transmission zeros is equal to the order of the filter minus two.

502403

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