Title :
Analysys of on-body antenna radiation pattern using a numerical technique based on FDTD and equivalence principle
Author :
Sani, Andrea ; Zhao, Yan ; Hao, Yang
Author_Institution :
Dept. of Electron. Eng., Queen Mary Univ. of London, London
Abstract :
This paper presents a numerical technique based on finite-difference time-domain (FDTD) and equivalence principle, to evaluate the on-body antenna radiation pattern distortion. With the FDTD method is very easy to model stratified dielectric objects like the human body, but to model antenna and human body together, the high resolution needed to model the radiating element leads to a strong increase of computational memory required. In the proposed technique the equivalence principle is used to separate the original problems into two sub-problems: 1) the antenna is analysed using CST Microwave Studio in free space; 2) the human body is handled with FDTD procedure. The described technique has been used to evaluate the on-body radiation pattern distortion for two different planar antennas at 2.4 GHz.
Keywords :
UHF antennas; antenna radiation patterns; biological effects of radiation; dielectric bodies; finite difference time-domain analysis; planar antennas; CST microwave studio; equivalence principle; finite-difference time-domain method; frequency 2.4 GHz; on-body antenna radiation pattern distortion; planar antenna; stratified dielectric object; Antenna radiation patterns; Biological system modeling; Dielectrics; Finite difference methods; Humans; Lead; Microwave antennas; Microwave theory and techniques; Pattern analysis; Time domain analysis;
Conference_Titel :
Antennas and Propagation Conference, 2008. LAPC 2008. Loughborough
Conference_Location :
Loughborough
Print_ISBN :
978-1-4244-1893-0
Electronic_ISBN :
978-1-4244-1894-7
DOI :
10.1109/LAPC.2008.4516889