TY - JOUR
T1 - A General Scheme for the Discontinuous Galerkin Time-Domain Modeling and S-Parameter Extraction of Inhomogeneous Waveports
AU - Chen, Geng
AU - Zhao, Lei
AU - Yu, Wenhua
AU - Yan, Su
AU - Zhang, Kedi
AU - Jin, Jian Ming
N1 - Manuscript received July 28, 2017; revised November 6, 2017; accepted December 12, 2017. Date of publication January 5, 2018; date of current version April 3, 2018. This work was supported in part by the National Science Foundation of China under Grant 61771226, Grant 61671223, and Grant 61372057 and in part by the Open Project of State Key Laboratory of Millimeter Waves under Grant K201613. (Corresponding author: Lei Zhao.) G. Chen, L. Zhao, and W. Yu are with the Center for Computational Science and Engineering, School of Mathematics and Statistics, Jiangsu Normal University, Xuzhou 22116, China (e-mail: [email protected]; [email protected]; [email protected]).
PY - 2018/4
Y1 - 2018/4
N2 - A general numerical scheme is proposed for the waveport modeling and scattering-parameter (S-parameter) extraction of inhomogeneous waveports with the discontinuous Galerkin time-domain method. In this scheme, the waveports are truncated with perfectly matched layers with a hybrid mesh automatically extruded from the mesh of the physical device to be simulated. The waveports are then excited by a total-field/scattered-field technique, with which the incident and scattered waves can be obtained for an accurate calculation of the S-parameters. A novel eigenmode solver is also developed to calculate the required modal profiles for the eigenmodes in both homogeneous and inhomogeneous waveports. Special attention is paid to the S-parameter extraction for evanescent modes, which has been a difficult task for time-domain simulations. Numerical examples are given to validate the proposed numerical scheme.
AB - A general numerical scheme is proposed for the waveport modeling and scattering-parameter (S-parameter) extraction of inhomogeneous waveports with the discontinuous Galerkin time-domain method. In this scheme, the waveports are truncated with perfectly matched layers with a hybrid mesh automatically extruded from the mesh of the physical device to be simulated. The waveports are then excited by a total-field/scattered-field technique, with which the incident and scattered waves can be obtained for an accurate calculation of the S-parameters. A novel eigenmode solver is also developed to calculate the required modal profiles for the eigenmodes in both homogeneous and inhomogeneous waveports. Special attention is paid to the S-parameter extraction for evanescent modes, which has been a difficult task for time-domain simulations. Numerical examples are given to validate the proposed numerical scheme.
KW - Discontinuous Galerkin time domain (DGTD)
KW - S-parameter extraction
KW - total-field/scattered-field (TF/SF) decomposition
KW - waveport modeling
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U2 - 10.1109/TMTT.2017.2785800
DO - 10.1109/TMTT.2017.2785800
M3 - Article
AN - SCOPUS:85040562343
SN - 0018-9480
VL - 66
SP - 1701
EP - 1712
JO - IEEE Transactions on Microwave Theory and Techniques
JF - IEEE Transactions on Microwave Theory and Techniques
IS - 4
ER -