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Modeling and Characterization of TSV-Induced Noise Coupling
Published in Thomas Noulis, Noise Coupling in System-on-Chip, 2018
Xiao Sun, Martin Rack, Geert Van der Plas, Jean-Pierre Raskin, Eric Beyne
Ansys HFSS (high frequency structure simulators) utilizes a 3D, full-wave frequency domain electromagnetic field solver based on the finite element method (FEM). With HFSS, reliable extraction of SYZ parameters can be performed; the electromagnetic fields can be visualized in 3D; and it can generate component models to evaluate signal quality, transmission path loss, impedance mismatch, parasitic coupling, and far-field radiation. However, while HFSS solves Maxwell's equations, it does not include semiconductor equations.
EMI and EMC Control, Case Studies, EMC Prediction Techniques, and Computational Electromagnetic Modeling
Published in David A. Weston, Electromagnetic Compatibility, 2017
EMAP5 is a hybrid FEM/MOM code designed primarily to simulate electromagnetic interference (EMI) sources at the printed circuit board level. EMAP5 is a full-wave electromagnetic field solver that combines the method of moments with a vector finite element method (VFEM). It employs FEM to analyze three-dimensional volumes, and uses MOM to analyze the current distribution on the surface of these volumes.
A frequency tunable resonator using liquid crystals on flexible substrates
Published in Liquid Crystals, 2023
Xingye Fan, Yong Cheng, Bingxiang Li, Ying Yu, Yuting Huang, Zhenpeng Song
The geometry and its corresponding dimensions of the proposed frequency tunable resonator are shown in Figure 1(b), this coplanar resonator structure with liquid crystals is modelled and simulated by an electromagnetic field solver HFSS with the gap between signal and ground electrodes of the CPW in the middle part of the proposed structure gap1 = 0.1 mm, thickness of flexible substrates hFS1 = hFS2 = 0.5 mm. Considering the variation of the dielectric constant of liquid crystals, a rectangular block with length, width, and height of 80 mm,10 mm, and 0.2 mm is set to different values of dielectric constant for simulating the liquid crystal layer sandwiched between two flexible substrates. The simulation results are shown in Figure 2. It can be seen that this structure generated four resonant frequencies and varied with the variations of the dielectric constant of liquid crystals.