Simulations and Analysis of the Corner Geometry and Its Influence on the Electromagnetic Behavior of Components and Structures:Comments on GTEM and Other Microwave Guided Structures
In this paper,it is shown the electromagnetic influence of the rounded corners which arises on the mechanical manufacturing process.Normally,microwave devices and resonant cavities are designed on the EM simulator with sharp corners.However,with this consideration,some response and behaviors are neglected.Concerning the differences between sharp and rounded corners,the investigation was carried out for a GTEM | Gigahertz Transverse Electromagnetic Chamber,specifically the APEX(the exciter sector)and a horn antenna.An EM simulator,based on the Finite Element method(FEM)was employed with very accurate models to identify the influence of the rounded corners on the propagation regime.To be sure that the simulation tool is doing a refined numerical solution,a close up of the meshing at the corner was verified.The simulated results show that the numerical analysis is compatible with the analytical solution for electrostatic fields presented in several works.Also,they show a non-negligible sensitivity of S11 parameter when comparison between sharp and rounded corners are done.
H.X.Araújo L.C.Kretly
University of Campinas,Brazil
国际会议
Progress in Electromagnetics Research Symposium 2011(2011年电磁学研究新进展学术研讨会)
苏州
英文
321-324
2011-09-01（万方平台首次上网日期，不代表论文的发表时间）