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Journal of Electromagnetic Waves and Applications Volume 26, 2012 - Issue 10
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Articles

A compact dual-band bandstop filter with defected microstrip slot

D. Cheng Information Engineering School, Communication University of China, Beijing, 100024, China; Institute of Antenna and Microwave Techniques, Tianjin University of Technology and Education, Tianjin, 300222, China
,
H.-C. Yin Science and Technology on Electromagnetic Scattering Laboratory, Beijing, 100854, China
&
H.-X. Zheng Institute of Antenna and Microwave Techniques, Tianjin University of Technology and Education, Tianjin, 300222, ChinaCorrespondence[email protected]
Pages 1374-1380 | Received 15 Apr 2012, Accepted 17 May 2012, Published online: 10 Jul 2012
 
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Abstract

To investigate a compact dual-band bandstop filter (DBBSF), a defected microstrip structure is proposed in this paper. The filter is composed of a spur-line structure and a rectangle slot. Resonant frequencies and the bandwidths of the filter can be adjusted by changing the length of the slot. The frequencies of designed DBBSF are operated at 2.12 and 2.9 GHz. A fabricated sample has been tested to verify our design. Measured and simulated results are in good agreement. The proposed filter is much more efficient than other similar structures.

Acknowledgment

This work was supported by Tianjin Research Program of Application Foundation and Advanced Technology, China, under Grant 12JCYBJC10500.

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