Title :
FDTD handset antenna modelling at 1800 MHz for electrical performance and SAR results
Author :
Rowley, John T. ; Waterhouse, Rod B. ; Joyner, Ken H.
Author_Institution :
Telstra Res. Labs., Clayton, Vic., Australia
Abstract :
The Finite Difference Time Domain Technique (FDTD) has been favoured for numerical bioelectromagnetic analysis by a number of researchers because of the relative ease of modelling complex dielectric bodies. Antenna performance and specific absorption rate (SAR) results are presented at 1800 MHz for a half wavelength dipole, a monopole and a planar inverted F antenna in free space and in the presence of different head phantoms. The phantoms used were a homogeneous sphere, a layered sphere and a realistic head model all using a 2.5 mm cubic voxel grid. The trend in the SAR results confirms the observation of others that the simpler head phantoms tend to overestimate the maximum SAR in comparison to more realistic models
Keywords :
antenna theory; biological effects of fields; cellular radio; dipole antennas; electromagnetic compatibility; finite difference time-domain analysis; monopole antennas; physiological models; radiofrequency interference; telephone sets; 1800 MHz; EM compatibility; FDTD handset antenna modelling; RF energy absorption by tissues; antenna performance; canonical models; complex dielectric bodies modelling; electrical performance; free space; half wavelength dipole; head phantoms; homogeneous sphere; layered sphere; mobile phones; monopole; numerical bioelectromagnetic analysis; planar inverted F antenna; realistic head model; specific absorption rate; voxel grid; Antenna feeds; Australia; Dipole antennas; Directive antennas; Finite difference methods; Imaging phantoms; Laboratories; Performance analysis; Telephone sets; Time domain analysis;
Conference_Titel :
Bioelectromagnetism, 1998. Proceedings of the 2nd International Conference on
Conference_Location :
Melbourne, Vic.
Print_ISBN :
0-7803-3867-7
DOI :
10.1109/ICBEM.1998.666408
