Broadband substrate integrated waveguide filters with defected ground structure

Author

Tang, Yu

Author_Institution

Sch. of Phys. Electron., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

fYear

2012

fDate

19-21 Oct. 2012

Firstpage

198

Lastpage

201

Abstract

This paper presents a scheme for designing broadband filters based on the substrate integrated waveguide (SIW) cavity with defected ground structures (DGS).The proposed DGS split-ring resonator (SRR) is developed from micro-strip SRR. Through the cross coupling resonator with source-load coupling, a compact broadband filter with three transmission zeros in the stop-band is realized and measured. According to the test, such filter has a 27% fractional bandwidth with 26.6GHz center frequency. Furthermore, another broadband filter based on this method is illustrated and simulated to suppress the nearby spurious band by double SIW cavities.

Keywords

cavity resonator filters; defected ground structures; microstrip filters; microwave filters; substrate integrated waveguides; waveguide filters; DGS split-ring resonator; SIW cavity filter; broadband substrate integrated waveguide filters; cross-coupling resonator; defected ground structure; double SIW cavities; frequency 26.6 GHz; microstrip SRR; source-load coupling; spurious band suppression; transmission zeros; Broadband communication; Cavity resonators; Couplings; Filtering theory; Microwave filters; Resonator filters; Substrates; DGS; SIW; broadband; cross-coupling; filter;

fLanguage

English

Publisher

ieee

Conference_Titel

Computational Problem-Solving (ICCP), 2012 International Conference on

Conference_Location

Leshan

Print_ISBN

978-1-4673-1696-5

Electronic_ISBN

978-1-4673-1695-8

Type

conf

DOI

10.1109/ICCPS.2012.6384252

Filename

6384252