Title :
High Speed Varactor Tuned Notch Filter
Abstract :
A design procedure for a varactor tuned notch filter is presented. The filter provides speed and agility required for ECM applications where a large interfering signal must be suppressed. The circuit is based on varactor tuned microstrip resonator which is. edge coupled to the signal transmission line. A three stage filter is described which tunes to any frequency between 1070 and 1240 MHz in less than 5 microseconds. It has a 1 dB bandwidth of 100 MHz, a 20 dB bandwidth of 20 MHz, and an RF power capability of 10 mW.
Keywords :
Bandwidth; Coupling circuits; Distributed parameter circuits; Electrochemical machining; Frequency; Microstrip resonators; Power transmission lines; Resonator filters; Tuned circuits; Varactors;
Conference_Titel :
Microwave Symposium Digest, 1985 IEEE MTT-S International
Conference_Location :
St. Louis, MO, USA
DOI :
10.1109/MWSYM.1985.1132030
