Tunable bandstop filters using BST varactor chips

Young Hoon Chun, Jia Sheng Hong, Peng Bao, Timothy J. Jackson, Michael J. Lancaster

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Citations (Scopus)


Ferroelectric Barium-Strontium-Titanate (BST) film varactor chips are fabricated and applied to the design of electronically tunable bandstop filters (BSFs) based on stepped impedance line resonator (SIR). Three different types of filters are designed and three different BST varactor chips are used to investigate the properties of BST varactors at microwave frequencies. The designed tunable BSFs show more than 30 dB of band rejection at the center frequency of 1.1 GHz with 10 % of frequency tuning ranges. © 2007 EuMA.

Original languageEnglish
Title of host publicationProceedings of the 37th European Microwave Conference, EUMC
Number of pages4
Publication statusPublished - 2007
Event37th European Microwave Conference - Munich, Germany
Duration: 9 Oct 200712 Oct 2007


Conference37th European Microwave Conference
Abbreviated titleEUMC


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