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2012-06-24
Compact Lowpass Filter with High Selectivity Using g -Shaped Defected Microstrip Structure
By
Progress In Electromagnetics Research Letters, Vol. 33, 55-62, 2012
Abstract
In this paper, a novel G-shaped defected microstrip structure (DMS) is presented. Compared with the conventional DMS, the proposed G-shaped DMS exhibits lower resonant frequency and wider stopband. A lowpass filter with 3 dB cutoff frequency at 3.17 GHz using four pairs of parallel cascaded G-shaped DMS units is designed and fabricated. The measured results show that the transition band is only 0.09 GHz and the stopband over 25 dB attenuation covers 3.4 GHz to 10 GHz.The measured and simulated results are in good agreement.
Citation
Hailin Cao, Wei Guan, Sijia He, and Lisheng Yang, "Compact Lowpass Filter with High Selectivity Using g -Shaped Defected Microstrip Structure," Progress In Electromagnetics Research Letters, Vol. 33, 55-62, 2012.
doi:10.2528/PIERL12051412
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