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Improved and compact 0.7 GHz tune-all bandpass filter

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5 Author(s)

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

Published in:

Electronics Letters  (Volume:43 ,  Issue: 3 )