A Wide Tuning Range Bandpass Filter Using Unequal Width Parallel-Coupled Dual- Mode Resonator

David Chatzichristodoulou*, Michalis Yiannakou, Dimitris E. Anagnostou, Symeon Nikolaou, Photos Vryonides

*Corresponding author for this work

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

Abstract

This paper presents a novel frequency reconfigurable microstrip bandpass filter (BPF) with wide tuning range based on parallel-coupled dual-mode resonator. The addition of the dual-mode resonator substantially suppresses the unwanted passband close to 2f0. In particular, each of the unequal width parallel coupled lines has a varactor diode connected to one end of the coupled-line while the other end is connected to a dual-mode resonator. A two-pole BPF was designed and fabricated and tested demonstrating 1.37:1 center frequency tuning. Furthermore the insertion loss within the frequency tuning range is 1.3 to 1.7 dB and the return loss greater than 20 dB.

Original languageEnglish
Title of host publication12th International Conference on Modern Circuits and Systems Technologies 2023
PublisherIEEE
ISBN (Electronic)9798350321074
DOIs
Publication statusPublished - 17 Jul 2023
Event12th International Conference on Modern Circuits and Systems Technologies 2023 - Athens, Greece
Duration: 28 Jun 202330 Jun 2023

Conference

Conference12th International Conference on Modern Circuits and Systems Technologies 2023
Abbreviated titleMOCAST 2023
Country/TerritoryGreece
CityAthens
Period28/06/2330/06/23

Keywords

  • bandpass filter (BPF)
  • dual- mode resonator
  • varactor diode

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture
  • Information Systems
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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