Improved and compact 0.7 GHz tune-all bandpass filter.

Authors :: Pistono, E.
Duvillaret, L.
Duchamp, J.-M.
Vilcot, A.
Ferrari, P.
Source :: Electronics Letters (Institution of Engineering & Technology); 2/1/2007, Vol. 43 Issue 3, p165-166, 2p, 2 Diagrams, 1 Chart, 3 Graphs
Publication Year :: 2007
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 7.3×10-3 λ02 and a -20 dB stop-band that extends up to 10 GHz. [ABSTRACT FROM AUTHOR]