Compact Substrate Integrated Waveguide (SIW) Filter With Defected Ground Structure

Author

Shen, Wei ; Yin, Wen-Yan ; Sun, Xiao-Wei

Author_Institution

Center for Microwave & RF Technol. (CMRFT), Shanghai Jiao Tong Univ. (SJTU), Shanghai, China

Volume

21

Issue

2

fYear

2011

Firstpage

83

Lastpage

85

Abstract

A compact substrate integrated waveguide (SIW) filter with defected ground structure (DGS) is proposed. The DGS is etched on the ground plane of the SIW cavity, and it behaves as a resonator. Under such condition, better frequency selectivity contributed to three transmission zeros is obtained, and two of them are located at the lower stopband. The proposed filter, fabricated using standard printed circuit board technology, has the advantages of compactness, good spurious suppression characteristics and low cost. Its measured S-parameters agree well with the simulated ones.

Keywords

S-parameters; band-stop filters; defected ground structures; printed circuits; resonator filters; substrate integrated waveguides; waveguide filters; S-parameter measurement; compact substrate integrated waveguide filter; defected ground structure; frequency selectivity; printed circuit board technology; resonator; spurious suppression characteristics; stopband; Cavity resonators; Couplings; Filtering theory; Microwave filters; Passband; Resonant frequency; Substrates; Defected ground structure (DGS); S-parameters; filter; substrate integrated waveguide (SIW); transmission zeros;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2010.2091402

Filename

5711411