Optimization design of TEM cell based on multi-stage curved edge transition structure and magnetic loss method

Jianfei Wu, Yang Li, Yanfang Lu, Hongli Zhang, Fang Liu, Yifei Zheng, Ledong Chen, Shuli Zhao and Lei Han

Journal of Electromagnetic Waves and Applications, 2024, vol. 38, issue 10, 1187-1199

Abstract: This article describes how to raise the TEM cells' operating bandwidth and lower their VSWR. A multi-stage curved-edge transition structure for minimizing VSWR and a magnetic loss mechanism for extending the operating bandwidth are proposed by evaluating the workings and constraints of TEM cells. A hybrid simulation strategy based on the particle swarm algorithm and 3D electromagnetic simulation (EM) software is suggested in order to identify the optimal quickly. In the 3D EM simulation software, the TEM cell's 3D model is created, the VSWR and return loss were solved for. It is possible to raise the operational bandwidth from 0–2 GHz to 0–5 GHz. At 0-3 GHz, measurement and simulation results are practically equal. At 3-4.5 GHz, measurement results differ somewhat from simulation results. At 4.5-5 GHz, measurement results greatly diverge from simulation results, and the parameters no longer fulfill standard criteria.

Date: 2024
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DOI: 10.1080/09205071.2024.2362261

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