A compact bandpass filter with enhanced stopband characteristics by an asymmetric cross-shape defected ground structure

Han Jan Chen, Tsung Hui Huang, Chin Sheng Chang, Lih Shan Chen, Jui Hong Horng, Yeong Her Wang, Mau Phon Houng

研究成果: Article同行評審

5 引文 斯高帕斯(Scopus)

摘要

In this paper, we present an effective technique to enhance stopband bandwidth for a bandpass filter by using an asymmetric, cross-shape defected ground structure (CSDGS). A single CSDGS can provide a higher attenuation rate near passband and broader stopband bandwidth. Moreover, with the asymmetric CSDGS, two different resonant frequencies can be excited and controlled independently, resulting in synthesizing a passband. The synthesized bandpass filter can be modeled by parallel LC resonant circuits in connection with T-networks. The bandwidth and insertion loss of this bandpass filter at 4.2 GHz is 28.6% and -1.44 dB, respectively, and 20 dB rejection in the stopband is up to four times the central frequency. All the synthesized bandpass filters have been measured and are in good agreement with simulated results.

原文English
頁(從 - 到)2183-2187
頁數5
期刊IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
53
發行號11
DOIs
出版狀態Published - 2006 十一月

All Science Journal Classification (ASJC) codes

  • 儀器
  • 聲學與超音波
  • 電氣與電子工程

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