Novel 1.5-1.9 GHz Tunable Single-to-Balanced Bandpass Filter with Constant Bandwidth

Pei-Ling Chi, Tao Yang

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

A novel tunable single-to-balanced bandpass filter is proposed in this letter. It consists of pairs of stepped-impedance resonators (SIRs), which are connected by back-to-back varactors in between. Based on such a simple structure, the filter can cover from 1.5 GHz to 1.9 GHz with constant absolute bandwidth, and exhibit differential outputs in each tuning state. The amplitude and phase imbalances between each differential outputs are less than 0.7 dB and 3 degrees, respectively, in the passband of each tuning state.

Original languageEnglish
Article number7738473
Pages (from-to)972-974
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Volume26
Issue number12
DOIs
StatePublished - 1 Dec 2016

Keywords

  • Constant absolute bandwidth
  • differential outputs
  • tunable single-to-balanced filter

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