Design of a Compact Ultra-Wideband Bandpass Filter with an Extremely Broad Stopband Region

Siang Wen Lan, Min Hang Weng, Cheng Yuan Hung, Shoou-Jinn Chang

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

This letter presents a design of a compact ultra-wideband (UWB) bandpass filter (BPF), which can exhibit an UWB response from 3.1 to 9.9 GHz with low insertion loss (IL) of 0.8 dB and an extremely broad stopband region from 10.9 to 25.1 GHz with high rejection level of 20 dB. This UWB BPF is simply constructed by using only one single-stage parallel-coupled line and two rectangular stub resonators. In this design, the rectangular stub resonators provide an exciting mode to enhance the desired UWB response and also create tunable transmission zeros to extend a wide stopband by controlling the impedance ratio (R) properly. The filter was fabricated and measured to verify the design concept.

Original languageEnglish
Article number7466108
Pages (from-to)392-394
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Volume26
Issue number6
DOIs
Publication statusPublished - 2016 Jun 1

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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