Title :
Investigations of polarization purity and specific absorption rate for two dual-band antennas for satellite-mobile handsets
Author :
Abd-Alhameed, Read A. ; Mangoud, M. ; Excell, P.S. ; Khalil, K.
Author_Institution :
Mobile & Satellite Commun. Res. Centre, Bradford Univ., UK
fDate :
6/1/2005 12:00:00 AM
Abstract :
A study of the effects of human proximity on the polarization purity of two types of circularly-polarized handset antennas for personal satellite communications was investigated using the hybrid method of moments (MoM)/finite-difference time-domain technique. Associated with this, assessments of specific absorption rate in the head were made. The method gave stable results, in accordance with physical expectations; good agreement with the pure Method of Moments was shown in simplified cases omitting the head. The quadrifilar spiral antenna (QSA) was shown to be a propitious design for personal satellite communications.
Keywords :
biological effects of microwaves; electromagnetic wave absorption; electromagnetic wave polarisation; finite difference time-domain analysis; method of moments; mobile antennas; mobile handsets; mobile satellite communication; multifrequency antennas; spiral antennas; MoM; QSA; SAR; circularly-polarized handset antenna; dual-band antenna; finite-difference time-domain technique; hybrid method of moment; mobile communication; personal satellite communication; physical expectation; quadrifilar spiral antenna; specific absorption rate; Dual band; Finite difference methods; Humans; Moment methods; Polarization; Satellite antennas; Satellite communication; Spirals; Telephone sets; Time domain analysis; Circular polarization; finite-difference time-domain (FDTD); hybrid method; method of moments (MoM); satellite mobile communications; specific absorption rate (SAR);
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2005.848516
