Compact sharp cutoff wide stopband microstrip low‐pass filter using complementary split ring resonator | Zendy

Dwari Santanu | Zendy; Sanyal Subrata | Zendy

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Compact sharp cutoff wide stopband microstrip low‐pass filter using complementary split ring resonator

Author(s) -

Dwari Santanu,

Sanyal Subrata

Publication year - 2007

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.22825

Subject(s) - stopband , cutoff frequency , passband , microstrip , microwave , cutoff , transition band , resonator , split ring resonator , low pass filter , attenuation , materials science , filter (signal processing) , physics , optics , optoelectronics , band pass filter , electrical engineering , engineering , prototype filter , telecommunications , quantum mechanics

A novel compact microstrip low‐pass filter (LPF) is proposed using open circuit stubs and square patches alongwith complementary split ring resonator (CSRR). It exhibits wide stopband and sharp rejection. A demonstration LPF, having 3‐dB cutoff frequency of 1.45 GHz, was fabricated and measured. Measured passband to stopband attenuation slope is more than 355 dB/GHz. Measured rejection greater than 20 dB extends over more than 13.75 times of the 3‐dB cutoff frequency. Electrical length of the filter is less than 12% of the guided wavelength at 3‐dB cutoff frequency. Experimental and simulated results agree well. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2865–2867, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22825

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