Title :
Ultra-wide stopband low-pass filter using novel coupled defected ground structure
Author :
Zhang, Sheng ; Liu, Jia ; Zhai, Yao ; Bian, Tian-Jian
Author_Institution :
Sch. of Inf. & Electr. Eng., China Univ. of Min. & Technol., Xuzhou, China
Abstract :
In this paper, a kind of coupled gap-ring defected ground structure (CGRDGS) is proposed firstly. The electric and magnetic coupling characteristics are studied. The S-parameters show that this type DGS has high selectivity, wide and deep stopband characteristics. At the same time, the effects of varying the parameters of CGRDGS have been studied. In order to explore the usefulness of the CGRDGS, a kind of seven-pole low-pass filter (LPF) is designed. This filter has compact size, sharp attenuation skirt and ultrawide stopband.
Keywords :
S-parameters; band-stop filters; defected ground structures; electromagnetic coupling; low-pass filters; ultra wideband technology; S-parameters; coupled gap-ring defected ground structure; electric coupling characteristics; magnetic coupling characteristics; seven-pole low-pass filter; sharp attenuation skirt; ultrawide stopband low-pass filter; Attenuation; Couplings; Filtering theory; Low pass filters; Microstrip filters; Microwave filters; Resonator filters; coupled gap-ring defected ground structure (CGRDGS); low-pass filter (LPF); ultra-wide stopband;
Conference_Titel :
Microwave, Antenna, Propagation, and EMC Technologies for Wireless Communications (MAPE), 2011 IEEE 4th International Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-8265-8
DOI :
10.1109/MAPE.2011.6156277
