PIER Letters
Progress In Electromagnetics Research Letters
ISSN: 1937-6480
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By S. Fallahzadeh and M. Tayarani

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In this paper, a novel microstrip bandstop filter by etching a square split ring in the center of microstrip line is proposed. Low insertion loss in the passband, high rejection level and integrated structure should be mentioned as advantages for this resonator. A transmission line model for this resonator is introduced and its resonant frequency is calculated analytically. Good agreement between the experimental results, full-wave simulation, transmission line model and analytical result has been achieved.

S. Fallahzadeh and M. Tayarani, "A Compact Microstrip Bandstop Filter," Progress In Electromagnetics Research Letters, Vol. 11, 167-172, 2009.

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