Dielectric filter

Details Dielectric filter Dielectric filter

1986-09-29

1988-04-26

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333202, 333207, 333222, H01P 1205, H01P 706

Patent

active

047407654

ABSTRACT:
A dielectric filter includes a single block made of dielectric material having three or more through holes in which an inner conductor is deposited to define three or more dielectric resonators coupled in a cascade manner. A reactance coupling arrangement is provided for coupling two spaced dielectric resonators with at least one dielectric resonator between them being skipped. By selecting the value of the reactance coupling arrangement, it is possible to provide a filter having a frequency characteristic in a desired format, including at least one pole at a selected point in an attenuation region thereof, without any increase in the number of stages of the dielectric resonators.

REFERENCES:
patent: 4180787 (1979-12-01), Pfitzenmaier
patent: 4418324 (1983-11-01), Higgins
patent: 4423396 (1983-12-01), Makimoto et al.
patent: 4426631 (1984-01-01), D'Avello et al.
patent: 4431977 (1984-02-01), Sokola et al.

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