Temperature compensated dielectric filter

Details Temperature compensated dielectric filter Temperature compensated dielectric filter

H - Electricity

01

P

H01P 1/20 (2006.01) H01P 1/205 (2006.01) H01P 1/30 (2006.01)

Patent

CA 2071257

1182-10 TEMPERATURE COMPENSATED DIELECTRIC FILTER ABSTRACT A temperature compensated filter comprises a block (1) of dielectric material having at least one transmission line resonator (3) formed herein. All surfaces except one side surface of the block are substantially coated with an electrically conductive layer (11). For achieving tempera- ture compensation, a capacitor (6) coupled to the conductive layer (11) through a strip line (7) is attached, in a heat conductive way, to the uncoated side surface of the di- electric block. The capacitor (6) tunes the main resonator and the temperature dependence of its frequency is opposite that of the dielectric body so that it compensates the temperature dependence of the frequency of the main reson- ator.

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