Title :
A new Defected ground Structure with bandstop filter characteristics
Author :
Kumar Parui, Susanta ; Moyra, Tamosi ; Das, Santanu
Author_Institution :
Bengal Eng. & Sci. Univ., Shibpur
Abstract :
In this paper, a new asymmetric type Defected ground Structure (DGS) is investigated. The proposed DGS unit comprising of three numbers of square shaped slots separated from each other by same distance connect a rectangular slot by thin meander slots underneath a microstrip line. In its frequency characteristics, a finite attenuation zero is observed near to its attenuation pole frequency. The investigated unit is modeled by a Causer Pi-network consisting of a series resonant and a shunt resonant circuit. For a given dimension of the DGS, the equivalent LC parameters are extracted. The investigated DGS exhibits a sharp and deep bandstop filtering characteristics. The size of the DGS is very compact as the overall cutout area is 0.3 lambdag X 0.18 lambdag.
Keywords :
band-stop filters; microstrip lines; slot lines; Causer Pi-network; attenuation pole frequency; bandstop filter; defected ground structure; equivalent LC parameters; finite attenuation zero; microstrip line; rectangular slot; series resonant circuit; shunt resonant circuit; square shaped slots; thin meander slots; Attenuation; Band pass filters; Etching; Filtering; Frequency; Microstrip; Poles and zeros; RLC circuits; Resonance; Strips;
Conference_Titel :
Antenna Technology, 2009. iWAT 2009. IEEE International Workshop on
Conference_Location :
Santa Monica, CA
Print_ISBN :
978-1-4244-4395-6
Electronic_ISBN :
978-1-4244-4396-3
DOI :
10.1109/IWAT.2009.4906882
