Design of the band-pass filter with wide stopband performance using λ/4 forked SIRs

Wei Chen Lin, Min-Hua Ho

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

2 Citations (Scopus)

Abstract

In this paper, a band-pass filter (BPF) using forked stepped-impedance resonators (SIRs) was proposed with having a very wide stopband performance. The circuit composed of two forked SIRs connected with a narrow microstrip with the latter's middle point shorting to the ground through a via hole. The FSIRs filter operated under a quarterwavelength resonance condition. The filter was built for WLAN IEEE 802.11b/g (2.4/2.45 GHz) applications. A long narrow coupled microstrip which increasing the stopband range was used to couple I/O signal to/from the resonators. The upper stopband, its frequency range was measured from 2.76 to 23.08 GHz with the criterion of the signal rejection levels greater than 20 dB. The stopband's upper-end is over 9.5 f0 with the central frequency of 2.44 GHz. Experiment was conducted and a good agreement was observed between the measurement and simulation.

Original languageEnglish
Title of host publicationAPMC 2009 - Asia Pacific Microwave Conference 2009
Pages1380-1382
Number of pages3
DOIs
Publication statusPublished - 2009 Dec 1
EventAsia Pacific Microwave Conference 2009, APMC 2009 - Singapore, Singapore
Duration: 2009 Dec 72009 Dec 10

Publication series

NameAPMC 2009 - Asia Pacific Microwave Conference 2009

Other

OtherAsia Pacific Microwave Conference 2009, APMC 2009
CountrySingapore
CitySingapore
Period09-12-0709-12-10

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All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Electrical and Electronic Engineering

Cite this

Lin, W. C., & Ho, M-H. (2009). Design of the band-pass filter with wide stopband performance using λ/4 forked SIRs. In APMC 2009 - Asia Pacific Microwave Conference 2009 (pp. 1380-1382). [5384493] (APMC 2009 - Asia Pacific Microwave Conference 2009). https://doi.org/10.1109/APMC.2009.5384493