Microwave bandpass filters including dielectric resonators

Details Microwave bandpass filters including dielectric resonators Microwave bandpass filters including dielectric resonators

H - Electricity

01

P

333/69

H01P 1/208 (2006.01) H01P 1/219 (2006.01)

Patent

CA 1229389

MICROWAVE BANDPASS FILTERS INCLUDING DIELECTRIC RESONATORS Abstract of the Disclosure A dielectric resonator microwave bandpass filter includes a printed circuit board supported within a cut-off waveguide, with dielectric resonators and coupling loops on an upper surface of the board and a well beneath the board so that the resonators are well spaced from ground planes. Tuning screws beneath the resonators, and coupling adjustment screws above the board adjacent to the coupling loops and between adjacent resonators, provide for adjustments to provide desired filter characteristics within a wide range. Isolators within the waveguide have ports coupled to the resonators via microstrip transmission lines comprising conductive tracks on the board and ports coupled to coaxial connectors in end walls of the waveguide. The waveguide is formed from a cast body and a flat lid. - i -

478332

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