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Microstrip lowpass filter based on split ring and complementary split ring resonators
Author(s) -
Yang Yang,
Zhu Xi,
Karmakar Nemai C.
Publication year - 2012
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.26887
Subject(s) - resonator , microstrip , stopband , cutoff frequency , microwave , low pass filter , attenuation , split ring resonator , filter (signal processing) , cutoff , passband , materials science , acoustics , physics , optics , electronic engineering , band pass filter , electrical engineering , telecommunications , engineering , quantum mechanics
A novel split ring and complementary split ring resonator is proposed in this letter.The proposed resonator can generate two notches without increasing the physical size. A microstrip lowpass filter (LPF) is designed based on the proposed resonator. The cutoff frequency of the designed LPF is 3.7 GHz and the stopband with an attenuation level lower than −20 dB is obtained from 3.9 to 7.5 GHz. The selectivity is calculated to be 85 dB/GHz. The physical size of the LPF with transmission lines is 29 × 6 mm 2 . A good agreement between simulated and measured results is achieved. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1723–1726, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26887
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