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2024-11-19
A Large-Frequency-Ratio Filtering Crossover Based on Ridged SIW Resonators
By
Progress In Electromagnetics Research Letters, Vol. 123, 69-76, 2025
Abstract
A novel filtering crossover featuring flexibly allocated center frequencies based on ridged substrate integrated waveguide (RSIW) is proposed. Two TE101-mode SIW cavities, two loading single ridge SIW (SRSIW) cavities and a loading triple ridge SIW (TRSIW) cavity are used to realize the filtering crossover. Good transmission and isolation responses can be achieved based on orthogonal degenerate TE102 and TE201 modes in the centered TRSIW cavity. The frequency ratio of the TE102 and TE201 modes can be significantly improved by adjusting the aspect ratio and the dimensions of ridges in the centered TRSIW cavity. A prototype operating at 4.98 GHz/10.1 GHz is fabricated and measured. The measured results demonstrate excellent agreement with the simulated one.
Citation
Tianle Zhou, Yuchen Yin, Wei Shen, Zixuan Yi, and Tao Zhao, "A Large-Frequency-Ratio Filtering Crossover Based on Ridged SIW Resonators," Progress In Electromagnetics Research Letters, Vol. 123, 69-76, 2025.
doi:10.2528/PIERL24090403
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