Bandpass filter with dielectric resonators

Details Bandpass filter with dielectric resonators Bandpass filter with dielectric resonators

1985-09-20

1986-12-02

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333209, 333210, 333235, H01P 120, H01P 1219, H01P 710

Patent

active

046268090

ABSTRACT:
A bandpass filter in which a plurality of dielectric resonators are arranged in an array is disclosed. Two metallic posts each having a length which is substantially equal to a quarter of the wavelength of the fundamental frequency (center frequency of the bandpass filter) are arranged one between the dielectric resonator located at one end of the array and an input connector and the other between the dielectric resonator located at the other end of the array and an output connector. This suppresses propagation of spurious modes, particularly propagation at a twice higher frequency than the fundamental frequency.

REFERENCES:
patent: 4037182 (1977-07-01), Burnett et al.
patent: 4142164 (1979-02-01), Nishikawa et al.

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