Evanescent mode microwave bandpass filter with a rotatable crank

Details Evanescent mode microwave bandpass filter with a rotatable crank Evanescent mode microwave bandpass filter with a rotatable crank

1986-06-13

1988-05-24

Laroche, Eugene R.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333210, H01P 120

Patent

active

047468831

ABSTRACT:
The microwave bandpass filter in the form of a cutoff frequency waveguide (1) or evanescent mode guide, being besides tunable within a range of frequencies and having at least one terminal (21, 22) of the coaxial type, has terminals each equipped with a crank-shaped coupling antenna (15) operable to be rotated about its longitudinal axis for filter tuning purposes.

REFERENCES:
patent: 2395165 (1946-02-01), Collard
patent: 2490845 (1949-12-01), Sorg
patent: 2910659 (1959-10-01), Caroselli
patent: 3105207 (1963-09-01), Capewell et al.
patent: 3214684 (1965-10-01), Everitt
patent: 3933226 (1976-08-01), Affolter
patent: 4028652 (1977-06-01), Wakino et al.
patent: 4206428 (1980-06-01), Kaegebein
patent: 4414516 (1983-11-01), Howard
patent: 4551694 (1985-11-01), Biehl et al.
patent: 4578655 (1986-03-01), Etienne et al.

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