Title :
Equivalent circuit modelling of spiral defected ground structure for microstrip line
Author :
Kim, Chul-Soo ; Lim, Jong-Sik ; Nam, Sangwook ; Kang, Kwang-Yong ; Ahn, Dal
Author_Institution :
Telecommun. Basic Res. Lab., ETRI, Taejon, South Korea
fDate :
9/12/2002 12:00:00 AM
Abstract :
An equivalent circuit for the microstrip line with a spiral defected ground structure (DGS), which is etched on the metallic ground plane, and a parameter extraction method, are presented. The proposed spiral DGS provides steep rejection characteristics with only one spiral-shaped defect. Experimental results show excellent agreement with simulated results of the equivalent circuit and the validity of equivalent circuit modelling for the spiral DGS
Keywords :
Butterworth filters; equivalent circuits; low-pass filters; microstrip filters; microstrip lines; transmission line theory; Butterworth-type one-pole lowpass filter; EM simulation; equivalent circuit modelling; metallic ground plane; microstrip line; parameter extraction method; spiral defected ground structure; spiral-shaped defect; steep rejection characteristics;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20020742
