Summary
International Symposium on Antennas and Propagation
2006
Session Number:3POS
Session:
Number:3POS-17
Application of Quasi-Static Approximation Technique for Dipole Antenna Analysis to Bioelectromagnetic Problems
Pornanong Pongpaibool, Kanako Wake, Soichi Watanabe, Takuji Arima, Toru Uno,
pp.1-4
Publication Date:2006/11/2
Online ISSN:2188-5079
Summary:
In this paper, a quasi-static approximation technique for improving the accuracy in the Finite Difference Time Domain (FDTD) analysis of dipole antenna is appied to the bioelectromagnetic problems. In the numerical simulation of bioelectromagnetic problems, the FDTD cell size is normally determined by the voxel size of the lossy dielectric bodies, such as the numerical human models. This limitation of cell size causes the difficulty in modelling a dipole antenna which is placed nearby the dielectric body. The calculations using different cell sizes which results in different dipole antenna length have confirmed the validity of the technique. Moreover, the modification of the FDTD cells to model the exact antenna length and overcome the difficulty when antenna radius is equal to half cell size is examined. In both cases, the quasistatic approximation technique can achieve good agreement results.