Microstrip quasi-elliptic function bandpass filter with improved tuning range

Wenxing Tang, Jia Sheng Hong

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

9 Citations (Scopus)

Abstract

This paper proposes a new type of varactor-tuned microstrip quasi-elliptic bandpass filter with improved tuning range. By employing the unique characteristic of the dual-mode open-loop resonator, that is, whose two operating modes (odd-and even-modes) do not couple each other, tuning the passband frequency becomes simple with single DC bias circuit. In addition, by using a wideband transformer, the tuning range of the proposed filter is doubled the previous work [1] while keeping nearly constant absolute-bandwidth. A designed four-pole tunable bandpass filter of this type is demonstrated experimentally. © 2010 EuMA.

Original languageEnglish
Title of host publicationEuropean Microwave Week 2010, EuMW2010: Connecting the World, Conference Proceedings - European Microwave Conference, EuMC 2010
Pages751-754
Number of pages4
Publication statusPublished - 2010
Event13th European Microwave Week 2010: Connectng the World - 40th European Microwave Conference - Paris, France
Duration: 28 Sep 201030 Sep 2010

Conference

Conference13th European Microwave Week 2010: Connectng the World - 40th European Microwave Conference
Abbreviated titleEuMW2010 and EuMC 2010
CountryFrance
CityParis
Period28/09/1030/09/10

Keywords

  • Dual-mode resonator filter
  • Microstrip filter
  • Tunable filter

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