Tuning arrangement for combiner filter having dielectric wavegui

Details Tuning arrangement for combiner filter having dielectric wavegui Tuning arrangement for combiner filter having dielectric wavegui

1990-11-29

1991-12-03

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

3332191, 333235, 334 82, H01P 120, H01P 710, H03J 320

Patent

active

050703137

ABSTRACT:
The present invention relates to a tuning arrangement for combiner filters which include a dielectric waveguide resonator (3) and a tuning capacitance (4) coacting therewith. According to the invention, the tuning capacitance (4) has the form of a substantially isosceles acute-angled triangle bent to a circular-cylindrical form with the cylinder axis parallel with the waveguide resonator (4). The apex of the triangle is attached to the center of the opposing side. The cylindrical tuning capacitance (4) can be rotated around the cylinder axis, for tuning the combiner filter.

REFERENCES:
patent: 2913683 (1959-11-01), Mason
patent: 4375626 (1983-03-01), Hudak
patent: 4639699 (1987-01-01), Nishikawa et al.
Derwent Publications Ltd., 89-347134/47 (SU 1462-438-A), Feb. 29, 1989.
Patent Abstracts of Japan, vol. 9 nr. 31, E-295, Abstract of JP 59-176906, 6 Oct. 1984.
Patent Abstracts of Japan, vol. nr. 31, E-295, Abstract of JP 59-176905, 6 Oct. 1984.

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