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Journal of Electromagnetic Waves and Applications Volume 22, 2008 - Issue 2-3
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Articles

Novel Dual-band Bandpass Filter Design Using Microstrip Open-loop Resonators

X.-W. Dai National Key Laboratory of Antennas and Microwave Technology, Xidian University, Xi'an, Shaanxi, China
,
C.-H. Liang School of Electronics Engineering, Xidian University, P. O. Box 223 Xi'an, Shaanxi 710071, China
,
B. Wu National Key Laboratory of Antennas and Microwave Technology Xidian University Xi'an, Shaanxi, China
&
J.-W. Fan National Key Laboratory of Antennas and Microwave Technology, Xidian University, Xi'an, Shaanxi, China
Pages 219-225 | Published online: 03 Apr 2012
 
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Abstract

This paper presents a novel dual-band banpass filter using microstrip open-loop resonators. A new microstrip unit of dual-band bandpass filter is introduced, which can be used as unit element of duan-band filter design. The two open-loop resonators are treated as passband resonator and stopband resonator in analysis, respectively. A five-pole C-band dual-band bandpsss filter has been designed and fabricated. The measured results show a good agreement with the simulated results.

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