NDLI: Design of a dual-mode substrate integrated waveguide filter with slot line perturbation

Content Provider	IEEE Xplore Digital Library
Author	Xuehui Guan Bin Wang Xiaoyan Wang Haiwen Liu Ye Yuan Xiaoyan Zhang
Copyright Year	2012
Description	Author affiliation: School of Information Engineering, East China Jiaotong University, Nanchang 330013, China (Xuehui Guan; Bin Wang; Xiaoyan Wang; Haiwen Liu; Ye Yuan; Xiaoyan Zhang)
Abstract	A single-cavity dual-mode substrate integrated waveguide (SIW) bandpass filter (BPF) for X-band application is presented in this paper. Coplanar waveguide (CPW) is used as SIW-microstrip transition in this design. Two slots of the CPW with unequal lengths are used to excite two degenerate modes, i.e. TE102 and TE201. A slot line is etched on the ground plane of the SIW cavity for perturbation. Its size and position are related to the effect of mode-split, namely the coupling between the two degenerate modes. Due to the cancellation of the two modes, a transmission zero in the lower stopband of the BPF is achieved, which improves the selectivity of the proposed BPF. And the location of the transmission zero can be controlled by adjusting the position and the size of the slot line perturbation properly. By introducing source-load coupling, an additional transmission zero is produced in the upper stopband of the BPF, it enhances the stopband performance of the BPF. Influences of the slot line perturbation on the BPF have been studied. A dual-mode BPF for X-band application has been designed, fabricated and measured. A good agreement between simulation and measurement verifies the validity of this design methodology.
Starting Page	1
Ending Page	4
File Size	955697
Page Count	4
File Format	PDF
ISBN	9781467321846
e-ISBN	9781467321853
DOI	10.1109/ICMMT.2012.6229916
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-05-05
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Band pass filters Filtering theory Couplings Microwave filters Cavity resonators Resonator filters Coplanar waveguides
Content Type	Text
Resource Type	Article

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