Title :
Compact Design Of a Sharp-Rejection Low-Pass Filter Using a Novel Defected Ground Structure
Author :
Huina, Wang ; Guohui, Li ; Jun, Yan
Author_Institution :
Sch. of Commun. & Inf. Eng., Shanghai Univ., Shanghai
Abstract :
In this article, we propose a microstrip low-pass filter (LPF) comprising of open-circuited stubs on the upper surface and a novel defected ground structure (DGS) on the lower ground plane, and discuss the impacts of some of the DGS parameters on the frequency characteristics. Based on this structure, a compact S-band LPF with sharp-rejection is designed and simulated effectively. A center frequency f 0 of 2.65 GHz is obtained by adjusting the dimensions of the DGS cell, and the simulated 3 dB cutoff frequency f c is 2.53 GHz with a sharpness factor (SF) of 0.955.
Keywords :
UHF filters; low-pass filters; microstrip filters; network synthesis; S-band LPF; defected ground structure; frequency 2.53 GHz; frequency 2.65 GHz; frequency characteristics; microstrip low-pass filter; open-circuited stubs; sharp-rejection low-pass filter design; sharpness factor; Capacitance; Ceramics; Cutoff frequency; Distributed parameter circuits; Inductance; Information filtering; Information filters; Low pass filters; Photonic band gap; Power transmission lines; Defected ground structure (DGS); low-pass filter (LPF); sharp-rejection;
Conference_Titel :
Microwave Conference, 2008 China-Japan Joint
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-3821-1
DOI :
10.1109/CJMW.2008.4772452
