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Journal of Electromagnetic Waves and Applications Volume 27, 2013 - Issue 8
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Articles

A novel tri-band band-pass filter using combined simplified CRLH and right-handed SIRs

Xin CaoSchool of Electronic Engineering, University of Electronic Science and Technology of China, No. 2006, Xiyuan Road, Hightech Area (west), Chengdu, 611731, P.R. China
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Zongxi TangSchool of Electronic Engineering, University of Electronic Science and Technology of China, No. 2006, Xiyuan Road, Hightech Area (west), Chengdu, 611731, P.R. China
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Fei WangInstitute of Astronautics and Aeronautics, University of Electronic Science and Technology of China, No. 2006, Xiyuan Road, Hightech Area (west), Chengdu, 611731, P.R. China
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Yunqiu WuSchool of Electronic Engineering, University of Electronic Science and Technology of China, No. 2006, Xiyuan Road, Hightech Area (west), Chengdu, 611731, P.R. China
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Wei YaoSchool of Electronic Engineering, University of Electronic Science and Technology of China, No. 2006, Xiyuan Road, Hightech Area (west), Chengdu, 611731, P.R. China
,
Biao ZhangSchool of Electronic Engineering, University of Electronic Science and Technology of China, No. 2006, Xiyuan Road, Hightech Area (west), Chengdu, 611731, P.R. China
&
Yingcong WangSchool of Electronic Engineering, University of Electronic Science and Technology of China, No. 2006, Xiyuan Road, Hightech Area (west), Chengdu, 611731, P.R. China
 show all
Pages 999-1007 | Received 26 Dec 2012, Accepted 15 Apr 2013, Published online: 08 May 2013
 
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Abstract

In this study, a novel tri-band band-pass filter using combined simplified composite right-/left-handed (CRLH) and right-handed (RH) stepped impedance resonators (SIR) is presented. This filter utilizes the zeroth order resonance of the SIRs in the CRLH region and RH resonance in the RH region to produce three different passbands. The proposed filter is simulated and measured, and measurement results match well with simulation ones. Good properties of low in-band insertion loss, good out-band rejection, and compact size have been achieved and verified, and it can be easily applied in the microwave circuits and wireless communication systems.

Acknowledgment

This study is supported by National Natural Science Foundation of China (Grant No.61201004) and the Fundamental Research Funds for the Central Universities (ZYGX2011J011).

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