Dielectric filter using quarter wavelength coaxial dielectric re

Details Dielectric filter using quarter wavelength coaxial dielectric re Dielectric filter using quarter wavelength coaxial dielectric re

1994-07-22

1996-02-20

Lee, Benny

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333222, H01P 1202

Patent

active

054932610

ABSTRACT:
A dielectric filter having a plurality of .lambda./4 coaxial dielectric resonators in stages, the resonator being filled with a dielectric material between its inner and outer conductors, comprising at least one stage in which the outer conductor of the .lambda./4 coaxial dielectric resonator is grounded via a capacitance or inductance. The dielectric filter is embodied as a low-pass filter, high-pass filter or a band-pass filter. As a result, by utilizing dielectric resonators having a desired resonant frequency, it is possible to readily achieve a dielectric filter having an attenuating pole in the neighborhood of the frequency passband and small in insertion loss.

REFERENCES:
patent: 4245198 (1981-01-01), Nishikawa et al.
patent: 4703291 (1987-10-01), Nishikawa et al.

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