Title :
A Novel Spurline Bandstop Filter Using Defected Ground and Defected Microstrip Structures
Author :
Chao, Chen ; Qun, Wu
Author_Institution :
Sch. of Electron. & Inf. Technol., Harbin Inst. of Technol., Harbin
Abstract :
In this paper, an improved spurline bandstop filter (BSF) using defected ground structures (DGS) and defected microstrip structures (DMS) is proposed. This method is based on the increment of the slow-wave factor (SWF) when DGS and DMS cells are successfully applied to enhance the out-of-band characteristics of the spurline bandstop filters. By using this method, the proposed filter has a stopband from 3.9 to 5.2 GHz with S21 less than -20 dB and the maximum rejection level of 62 dB.
Keywords :
band-stop filters; microstrip filters; microwave filters; transmission lines; defected ground structures; defected microstrip structures; frequency 3.9 GHz to 5.2 GHz; out-of-band characteristics; slow-wave factor; slow-wave structure; spurline bandstop filter; transmission lines; Chaos; Information filtering; Information filters; Microstrip antennas; Microstrip filters; Microstrip resonators; Microwave filters; Periodic structures; Resonant frequency; Spurline; Bandstop filter; DGS; DMS; Spurline;
Conference_Titel :
Microwave Conference, 2008 China-Japan Joint
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-3821-1
DOI :
10.1109/CJMW.2008.4772379
