IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
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A novel ultra-wideband bandpass filter using defected microstrip structures
Haodong LinHao PengXinlin XiaTao YangHaiyan Jin
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2016 Volume 13 Issue 7 Pages 20160165

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Abstract

A novel ultra-wideband (UWB) bandpass filter with compact size, improved stopband performance and wider bandwidth is presented in this paper. A new defected microstrip structures resonator (DMSR) is proposed and analyzed theoretically. In order to improve the stopband characteristics, three interdigitated parallel coupled-lines (IPCL) and two complementary split ring resonators (CSRR) are adopted. Finally, a filter prototype is fabricated and measured. The measured results show that the proposed filter achieves a bandwidth of 129% from 2.35 to 10.8 GHz. And the insertion loss is less than 0.5 dB with good return loss.

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© 2016 by The Institute of Electronics, Information and Communication Engineers
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