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Progress In Electromagnetics Research
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NOVEL NESTED SPLIT-RING-RESONATOR (SRR) FOR COMPACT FILTER APPLICATION

By Y. Liu, X. Tang, Z. X. Zhang, and X. L. Huang

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Abstract:
In this paper, a novel miniaturized nested split-ring resonator (SRR) structure is proposed. The nested SRR structure incorporates multiple split-ring resonators in a compact nested structure, and has more split gaps than the conventional SRR structure. Compared with conventional SRR, this nested SRR has better performance on miniaturization and high-Q value. To verify good characteristics of the proposed resonator structure, a novel resonator-embedded band-pass filter (BPF), which is constructed by four nested resonators, is designed. This novel BPF is very compact and has good in- and out-band performances. The proposed nested SRR unit cell has size of 0.04λg x 0.04λg(λg is the signal wavelength at the 2.4 GHz central frequency of the pass-band). Its stop-bands are extended 0.5~2 GHz at lower band and 2.7~5.4 GHz at upper band with a rejection level of higher than 20 dB, and its 1-dB pass-band is 2.2~2.55 GHz with 1.8 dB optimized insertion loss. The measured and simulated results are well complied with each other.

Citation:
Y. Liu, X. Tang, Z. X. Zhang, and X. L. Huang, "Novel nested split-ring-resonator (srr) for compact filter application," Progress In Electromagnetics Research, Vol. 136, 765-773, 2013.
doi:10.2528/PIER12121306
http://www.jpier.org/pier/pier.php?paper=12121306

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