Title :
Lowpass filter using 50Ω microstrip line based on defected ground structure
Author :
Chen, Jian-Xin ; Li, JiaLin ; Xue, Quan
Author_Institution :
Dept. of Electron. Eng., Hong Kong City Univ., Kowloon, China
Abstract :
A novel defected ground structure (DGS) with 50Ω microstrip line is investigated for lowpass filter applications. The basic resonant element of the proposed DGS unit shows the characteristics of elliptic function. The equivalent lumped circuit model for the DGS is developed and its parameters are extracted. Based on the DGS, a lowpass filter with sharp rejection in the stopband using 50Ω microstrip line is developed. The theoretical and measured results are presented.
Keywords :
elliptic filters; equivalent circuits; low-pass filters; microstrip filters; microstrip lines; 50 ohm; defected ground structure; elliptic functions; equivalent lumped circuit model; lowpass filters; microstrip lines; resonant element; Circuit simulation; Cutoff frequency; Equivalent circuits; Etching; Filtering theory; Impedance; Microstrip filters; Microwave filters; Resonance; Solid modeling; Lowpass filter; defected ground structure (DGS); microstrip line;
Conference_Titel :
Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings
Print_ISBN :
0-7803-9433-X
DOI :
10.1109/APMC.2005.1606273
