Monolithic ceramic filter with bandstop function

Details Monolithic ceramic filter with bandstop function Monolithic ceramic filter with bandstop function

H - Electricity

01

P

333/63, 333/90

H01P 7/10 (2006.01) H01P 1/205 (2006.01) H01P 1/213 (2006.01)

Patent

CA 1311534

CE00449G Abstract of the Disclosure A ceramic filter (144,118) includes a multiple zero bandstop filter function. The ceramic filter has a dielectric block (210) with top and bottom surfaces and at least two holes (221- 227), extending from the top surface toward the bottom surface of the block. The block (210) is selectively covered with a conductive material to provide a transmission line resonator for each of the two holes. The filter also includes an input electrode (214) coupled to the dielectric means at a predetermined distance form one first hole (201), and an output electrode (216) coupled to the dielectric means at a predetermined distance from another hole (207). Finally, conductive plating (240), in the form of a transmission line, is contiguously disposed on the dielectric means adjacent the two holes and coupled thereto to provide a bandstop filter function with a zero represented at each hole.

598369

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