Adjustable ceramic filter and method for tuning it

Details Adjustable ceramic filter and method for tuning it Adjustable ceramic filter and method for tuning it

H - Electricity

03

H

H03H 9/46 (2006.01) H01P 1/205 (2006.01) H03H 9/24 (2006.01)

Patent

CA 2065714

Abstract The resonator frequency of a ceramic filter comprising sev- eral resonators can be adjusted so that above the top sur- face (3) of the block (1) there is placed above each hole (61 - 67) requiring adjustment a metallic cover (10) with parts (71 - 77) to be bent, whereby bending a part changes the frequency of the resonator located at that part. The coupling between the resonators will be affected by another part (e.g. 111) to be bent, located in the cover (103 above an area between two holes (e.g. 61 and 62). A part to be bent (121 - 126) affecting the coupling can also be located adjacent the side surface of the block (1) opposite an area between the resonators.

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