Title :
Wideband bandpass filter with excellent selectivity using new CSRR-based resonator
Author :
Luo, Xiaohua ; Qian, Hua ; Ma, J.-G. ; Li, Er-Ping
Author_Institution :
Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A wideband bandpass filter (WBPF) with excellent selectivity is proposed. An equivalent circuit model of the new complementary split-ring resonator (CSRR)-based resonator with good wideband response is presented. A WBPF with strong passband selectivity and wide stopband can be achieved by the new resonators with a proper coupled scheme using the eighth-wavelength (λ/8) directly coupled parallel microstrip-lines. Specifically, the filter exhibits a competitive attenuation slope of 262.2 and 75.9 dB/GHz in the lower and upper passband transitions, respectively.
Keywords :
attenuators; band-pass filters; equivalent circuits; microstrip lines; strip line resonators; CSRR-based resonator; attenuation slope; complementary split-ring resonator; directly coupled parallel microstrip-lines; equivalent circuit; lower passband transitions; passband selectivity; upper passband transitions; wide stopband; wideband bandpass filter; wideband response;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2010.1817
