Design of a novel V-band coplanar waveguide low-pass filter based on defected ground structures

Author

Xu, Mingming ; Yu, Weihua ; Deng, Hong ; Mou, Jinchao ; Chen, Ling

Author_Institution

Lab. of Microwave Commun. & Electron. Syst., Beijing Inst. of Technol., Beijing, China

fYear

2011

fDate

22-25 May 2011

Firstpage

148

Lastpage

151

Abstract

This paper presents a novel V-band coplanar waveguide low pass filter based on defected ground structure (DGS) cells. The proposed DGS cell provides low-pass characteristic whose cutoff frequency could be changed by tuning its dimensions. To realize a low pass filter with excellent rejection in the stop-band, several DGS cells with different sizes are cascaded together. Gallium arsenide is adopted to be the substrate of the low-pass filter with the cutoff frequency located in the V band. By optimization, a low-pass filter with the cutoff frequency of 60 GHz is designed, whose insertion loss in the pass band is less than 0.2 dB and the rejection in the stop-band is better than 25 dB from 65 GHz to 100 GHz.

Keywords

III-V semiconductors; coplanar waveguide components; defected ground structures; gallium arsenide; low-pass filters; millimetre wave filters; waveguide filters; GaAs; V-band; coplanar waveguide low-pass filter; cutoff frequency; defected ground structures; frequency 60 GHz; frequency 65 GHz to 100 GHz; insertion loss; millimetre wave filters; Band pass filters; Coplanar waveguides; Cutoff frequency; Filtering theory; Low pass filters; Microwave filters; Optical filters; Coplanar Waveguide (CPW); Defected Ground Structure (DGS); Low-Pass Filter (LFP);

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Technology & Computational Electromagnetics (ICMTCE), 2011 IEEE International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-8556-7

Type

conf

DOI

10.1109/ICMTCE.2011.5915186

Filename

5915186