Title :
Analytic fields of a focused beam with higher-order compensations for FDTD TF/SF formulation
Author :
Singh, Gurpreet ; Tan, Eng Leong ; Chen, Zhi Ning
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore
Abstract :
This paper presents time-domain analytic fields of a focused beam with higher-order compensations for the finite-difference time-domain (FDTD) total-field/scattered-field (TF/SF) formulation. The higher-order compensations account for the FDTD numerical dispersion and the frequency-dependent field polarizations. With these compensations, the focused beam can be excited with minimal field leakage errors in the SF region. Numerical experiments are presented to validate the proposed fields and its compensations.
Keywords :
electromagnetic wave polarisation; electromagnetic wave scattering; finite difference time-domain analysis; FDTD numerical dispersion; finite-difference time-domain formulation; focused beam; frequency-dependent field polarizations; higher-order compensations; minimal field leakage errors; total-field-scattered-field formulation; Antennas; Approximation methods; Dispersion; Finite difference methods; Numerical models; Time domain analysis;
Conference_Titel :
Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on
Conference_Location :
Spokane, WA
Print_ISBN :
978-1-4244-9562-7
DOI :
10.1109/APS.2011.5996972
