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

✍ Scribed by Santanu Dwari; Subrata Sanyal

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
201 KB
Volume
49
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

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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