Title :
Switchable Band-Stop Filter for M.I.C.
Author_Institution :
THOMSON-CSF, DIVISION AVS, 178 Bd Gabriel Péri - 92242 MALAKOFF CEDEX - FRANCE
Abstract :
A switchable filter structure using transmission lines switched by means of PIN diodes permits to obtain according to the bias diode state either a transfer function band-stop or a transfer function pseudo all pass. This switchable filter consists of : quarter-wave open-circuited lines separated by quarter-wave series lines, beam lead PIN diodes and biasing circuits. It is well suited for M. I. C. technology. A device operating up to 18 GHz has been realized on alumina substrate using a microstrip propagation mode. An application of this kind of switchable band-stop filter is the second harmonic suppression in wide band system.
Keywords :
Attenuation; Band pass filters; Diodes; Frequency; Impedance; Insertion loss; Microstrip; Power harmonic filters; Switches; Transfer functions;
Conference_Titel :
Microwave Conference, 1984. 14th European
Conference_Location :
Liege, Belgium
DOI :
10.1109/EUMA.1984.333440
