Vol. 43

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2013-11-08

Microstrip Wideband Bandpass Filter Based on Square Ring Loaded Resonator

By Kun Deng, Jian Zhong Chen, Shou Jia Sun, Bian Wu, and Chang-Hong Liang
Progress In Electromagnetics Research Letters, Vol. 43, 175-184, 2013
doi:10.2528/PIERL13100805

Abstract

In this paper, a compact microstrip wideband bandpass filter (BPF) based on square ring loaded resonator (SRLR) is proposed. The SRLR is formed by loading a pair of bent open-stubs outside the diagonal corners of a square ring, which generates three split degenerated modes. The first two split modes form a dominant wideband passband. By introducing another pair of loaded open-stubs, the third split mode is moved into the passband to achieve an extra bandwidth for the wideband passband. Measured results show that this proposed BPF has a 3 dB fractional bandwidth of 69%, and the insertion loss of the BPF is less than 1.0 dB.

Citation


Kun Deng, Jian Zhong Chen, Shou Jia Sun, Bian Wu, and Chang-Hong Liang, "Microstrip Wideband Bandpass Filter Based on Square Ring Loaded Resonator," Progress In Electromagnetics Research Letters, Vol. 43, 175-184, 2013.
doi:10.2528/PIERL13100805
http://test.jpier.org/PIERL/pier.php?paper=13100805

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