Design of balanced dual-band bandpass filter based on substrate integrated waveguide

Author

Xin Xu ; Jianpeng Wang ; Gang Zhang ; Jianxin Chen

Author_Institution

Ministerial Key Lab. of JGMT, Nanjing Univ. of Sci. & Technol., Nanjing, China

Volume

49

Issue

20

fYear

2013

fDate

September 26 2013

Firstpage

1278

Lastpage

1280

Abstract

For the first time, a balanced dual-band bandpass filter using a substrate integrated waveguide structure is reported. The co-shared TE₁₀₂-mode cavities arranged on the symmetrical plane can greatly reduce the common-mode signal while selectively transmitting the differential-mode (DM) signal. In addition, the desired DM response can be easily analysed and obtained by the equivalent 2-port circuit model. To validate the design concept, one X-band prototype has been fabricated and tested. The measured results match well with the theoretical counterparts.

Keywords

band-pass filters; equivalent circuits; integrated circuit design; integrated circuit modelling; substrate integrated waveguides; waveguide filters; DM response; DM signal; SIW; TE₁₀₂-mode cavities; X-band prototype; balanced dual-band bandpass filter; common-mode signal; design concept; differential-mode signal; equivalent 2-port circuit model; substrate integrated waveguide structure; symmetrical plane;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2013.2371

Filename

6612829