Title :
Analysis of scattering by dielectric bodies-comparison of TLM and FDTD-PML methods
Author :
Rao, R. Srinivasa ; Subbaiah, P.V. ; Rao, B. Prabhakar
Author_Institution :
Dept. of ECE, SVEC, Tirupathi, India
Abstract :
We present in this paper a comparison of two popular time domain numerical techniques, viz., the transmission line matrix (TLM) method and the finite-difference time-domain (FDTD) method for electromagnetic scattering problems. Even though there are many similarities between the two methods, the modeling philosophy is different. Whereas in FDTD Maxwell´s equations are solved using a differencing scheme, in TLM a scattering approach akin to Huygens principle is implemented by replacing the space domain with a system of interconnected transmission-lines. The comparison is made via standard canonical shapes, a dielectric cube, and a dielectric sphere, to address the factors affecting accuracy, efficiency, and the required computer resources.
Keywords :
Maxwell equations; dielectric bodies; electromagnetic wave scattering; finite difference time-domain analysis; transmission line matrix methods; FDTD-PML method; Huygens principle; Maxwell equations; TLM method; computer resources; dielectric bodies-comparison; dielectric cube; dielectric sphere; differencing scheme; electromagnetic scattering problems; finite-difference time-domain method; modeling philosophy; standard canonical shapes; time domain numerical techniques; transmission line matrix method; Dielectrics; Finite difference methods; Indexes; Three dimensional displays; Time domain analysis; Differential equations; Finite-difference methods; Transmission line matrix method;
Conference_Titel :
Devices, Circuits and Systems (ICDCS), 2012 International Conference on
Conference_Location :
Coimbatore
Print_ISBN :
978-1-4577-1545-7
DOI :
10.1109/ICDCSyst.2012.6188707
