Waveguide filter

Details Waveguide filter Waveguide filter

1986-09-02

1987-10-20

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333209, 333232, 29600, H01P 1208, H01P 706, H01P 312

Patent

active

047017287

ABSTRACT:
A waveguide filter for use in a communication system that treats microwaves or millimetric waves comprises waveguides of a U-shaped cross section and a support on which the waveguides are longitudinally connected in series. Two inductor plates bear on each of the waveguides to form a waveguide resonator. Each inductor plate has first and second planes meeting at right angles. Thus, each inductor plate assumes an L-shaped form. Each first plane covers the corresponding longitudinal U-shaped end of the waveguides. Each second plane covers half of the corresponding open bottom of the waveguides, and has a tongue formed by two notches. This tongue can be bent and inserted into the corresponding waveguide to adjust the center frequency of the passband of the bandpass filter formed by the waveguide filter.

REFERENCES:
patent: 3137828 (1964-06-01), Gerig et al.
patent: 4320367 (1982-03-01), Boujet
patent: 4396896 (1983-08-01), Williams

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