Lead-strontium-titanate varactor-tuned CPW bandstop filter on liquid crystal polymer substrates

Young Hoon Chun, Roman Keller, Jia Sheng Hong, Charalampos Fragkiadakis, Robert V. Wright, Paul B. Kirby

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

3 Citations (Scopus)

Abstract

This paper presents an investigation of a tunable coplanar waveguide (CPW) bandstop filter with slotted ground structure. Spurious responses resulting from the shapes of resonator and the tuning position have been investigated by EM simulations. As a tuning element, Lead- Strontium- Titanate (PST) varactor chip is deployed. Also, in order to reduce required elements and unwanted spurious, LCP substrates are used as multi-layered laminates. A 2-pole tunable bandstop filter of this type is measured at the center frequency from 905 to 1040 MHz and its maximum rejection is more than 25 dB at the stopband with a wide passband response. © 2009 EuMA.

Original languageEnglish
Title of host publicationEuropean Microwave Week 2009, EuMW 2009: Science, Progress and Quality at Radiofrequencies, Conference Proceedings - 39th European Microwave Conference, EuMC 2009
Pages1373-1376
Number of pages4
DOIs
Publication statusPublished - 2009
EventEuropean Microwave Week 2009, EuMW 2009: Science, Progress and Quality at Radiofrequencies - 39th European Microwave Conference, EuMC 2009 - Rome, Italy
Duration: 28 Sep 20092 Oct 2009

Conference

ConferenceEuropean Microwave Week 2009, EuMW 2009: Science, Progress and Quality at Radiofrequencies - 39th European Microwave Conference, EuMC 2009
CountryItaly
CityRome
Period28/09/092/10/09

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