Title :
Improved and compact 0.7 GHz tune-all bandpass filter
Author :
Pistono, E. ; Duvillaret, L. ; Duchamp, J.-M. ; Vilcot, A. ; Ferrari, P.
Author_Institution :
LAHC, Univ. de Savoie
Abstract :
A compact tune-all bandpass filter is presented. This electronically tuned filter is based on series-coupled slow-wave resonators. It allows wide simultaneous and continuous tunings of centre frequency (+/-15% around 0.7 GHz) and bandwidth (from 50 to 100 MHz) with insertion loss IL<5.4 dB and return loss RL>11 dB. This two-pole bandpass filter exhibits also a very small surface of only 7.3times10-3 lambda0 2 and a -20 dB stop-band that extends up to 10 GHz
Keywords :
UHF filters; band-pass filters; circuit tuning; poles and zeros; resonator filters; 0.7 GHz; 50 to 100 MHz; UHF; compact band pass filter; compact tune-all filter; series-coupled resonators; slow-wave resonators;
Journal_Title :
Electronics Letters
