Adjustable band suspended substrate filter

Details Adjustable band suspended substrate filter Adjustable band suspended substrate filter

1987-09-25

1989-07-18

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333246, H01P 1203

Patent

active

048497223

ABSTRACT:
An adjustable band filter comprising a conductive screening body (10, 11) made of two parts (10 and 11) joined to each other on either side of a separation plane (13), a cavity (12) inside said body, said cavity containing a half wavelength resonant line (15) carried on a first face (16) of a suspended substrate (14), the substrate being end-coupled and received in grooves (17) made in the walls of the first portion (10). The first face (16) of the substrate (14) divides the cavity (12) into two asymmetrical volumes in such a manner as to enable the passband of said filter to be modified.

REFERENCES:
patent: 2820201 (1958-01-01), Tomigasa
patent: 2968012 (1961-01-01), Alstadter
patent: 3117379 (1964-01-01), Ayer
patent: 3754198 (1973-08-01), Anghel
patent: 3863181 (1975-01-01), Glance et al.
patent: 3882396 (1975-06-01), Schneider
patent: 4028650 (1977-06-01), Konishi et al.
patent: 4276655 (1981-06-01), Kraemer et al.
patent: 4365195 (1982-12-01), Stegens
patent: 4443314 (1984-02-01), Hislop et al.
Rooney, J. P. et al.; "Printed Circuit Integration of MW Filters" Microwave Journal; vol. 21, No. 9, Sep. 1978; pp. 68-73.

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