Bandpass filter with capacitively loaded coupled lines for wideband spurious rejection

Peng Chen, Luping Li, Kai Yang, Qiang Chen

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

Abstract

A stepped-impedance resonator (SIR) bandpass filter with capacitively loaded coupled lines for wideband spurious rejection is proposed in this paper. The SIR unit has the ability to realize a wideband spurious rejection while the capacitively loaded coupled lines can provide two additional transmission zeros at the upper stopband, which are essential to improve the rejection performance. Simulated and measured results show that the center frequency of the proposed second-order filter is at 2.184 GHz with -2.6 dB insertion loss. It can provide -19 dB rejection levels in the stopband up to 6 times of the passband center frequency.

Original languageEnglish
Title of host publication2018 Asia-Pacific Microwave Conference, APMC 2018 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1333-1335
Number of pages3
ISBN (Electronic)9784902339451
DOIs
Publication statusPublished - 2019 Jan 16
Event30th Asia-Pacific Microwave Conference, APMC 2018 - Kyoto, Japan
Duration: 2018 Nov 62018 Nov 9

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC
Volume2018-November

Conference

Conference30th Asia-Pacific Microwave Conference, APMC 2018
CountryJapan
CityKyoto
Period18/11/618/11/9

Keywords

  • Capacitively loaded
  • Coupled lines
  • SIR filter
  • Wideband spurious rejection

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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