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2013-09-18
Compact Bandpass Filter Based on Novel Hairpin Resonator with Self-Contained Triple Transmission Zeros
By
Progress In Electromagnetics Research Letters, Vol. 43, 65-72, 2013
Abstract
A compact coupled-line hairpin resonator is proposed and analyzed for designing a novel bandpass filter (BPF) in this letter. Compared with conventional stepped-impedance and stub-loaded resonator, the proposed resonator can produce three transmission zeros, which can be applied to achieve a wide and highly-attenuated upper stopband. To validate this attractive feature, a microstrip BPF is designed and fabricated with the center frequency at 2.4 GHz and a fractional bandwidth of 6%. Measured frequencies responses show a wider upper stopband up to 6.9 GHz (2.9f0) with insertion loss higher than 20 dB.
Citation
Yun Xiu Wang, Lei Zhu, and Songbai Zhang, "Compact Bandpass Filter Based on Novel Hairpin Resonator with Self-Contained Triple Transmission Zeros," Progress In Electromagnetics Research Letters, Vol. 43, 65-72, 2013.
doi:10.2528/PIERL13080906
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