Compact and switchable dual-band bandpass filter with high selectivity and wide stopband

S. C. Weng, K. W. Hsu, W. H. Tu

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

A compact and independently switchable dual-band bandpass filter is presented. To achieve high selectivity response, transmission zeros beside the two passbands are generated due to crossed coupling. On the other hand, the use of quarter-wavelength stepped-impedance resonators can not only miniaturise circuit size but also widen the stopband by arranging the resonant frequencies in a stagger with the same fundamental frequency. The pin diodes are loaded at the end of the resonators as the switching devices to independently control each passband.

Original languageEnglish
Pages (from-to)1275-1277
Number of pages3
JournalElectronics Letters
Volume49
Issue number20
DOIs
StatePublished - 26 Sep 2013

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