Design of varactor-tuned dual-mode tunable filter with constant fractional bandwidth

H.-Y. TsaiT.-Y. HuangR.-B. WuRUEY-BEEI WU2019-10-242019-10-242016https://scholars.lib.ntu.edu.tw/handle/123456789/427875Design of varactor-tuned dual-mode tunable filter with constant fractional bandwidthjournal article