Dielectric filter of the band elimination type

Details Dielectric filter of the band elimination type Dielectric filter of the band elimination type

1995-02-17

2000-03-07

Lee, Benny

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333206, 333207, 333222, 333223, H01P 1205

Patent

active

060345799

ABSTRACT:
A dielectric filter is formed by a plurality of resonator holes which are formed in a single dielectric block in such a manner that they extend in a direction between an open-circuited end surface and a short-circuited end surface of the dielectric block. The resonator holes are opened only at the short-circuited end surface. An inner conductor is formed on an inner surface of each of the resonator holes. An outer conductor is formed on an outer surface of the dielectric block. Capacitor electrodes respectively corresponding to the resonator holes are formed on the open-circuited end surface of the dielectric block. Input/output electrodes electrically connected to the capacitor electrodes are formed in such a manner that they extend on both the open-circuited end surface and a bottom surface of the dielectric block. In this structure, since all the capacitive components constituting the filter can be obtained by either the capacitances formed between the capacitor electrodes and the inner conductors, or the capacitances formed in a gap between the capacitor electrodes, the dielectric filter can be constructed in the form of a single block.

REFERENCES:
patent: 5614875 (1997-03-01), Jang et al.

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