A Substrate Integrated Waveguide Dual-mode Filter with a Slot Line Perturbation
Li Rong-qiang①② Xiao Shao-qiu②
①(School of Electronic Engineering, Chengdu University of Information Technology, Chengdu 610225, China) ②(School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China)
Abstract：In this paper, a novel miniaturized Substrate Integrated Waveguide (SIW) dual-mode filter is presented. By adopting an orthogonal input and output feed line, and an inclined slot line for disturbing two degenerate modes, two Transmission Zeros (TZs) are created. A 15 GHz SIW dual-mode filter with 350 MHz bandwidth is designed and fabricated using the proposed method. The filter has a very simple structure, low cost and is easily fabricated. The measured results are in good agreement with the simulated results, which show that the design of the proposed filter is correct and effective.
2014, Vol. 36 
