Title :
Spiral antenna irradiation into lossy media with Debye dispersion
Author :
Tofighi, M.R. ; Sunal, A.
Author_Institution :
Penn State Univ., Middletown
Abstract :
This paper presents the analysis of single arm Archimedean spiral antennas radiating into a lossy medium (i.e. water) characterized by Debye dispersion. Conformal Finite Difference Time Domain (CFDTD) method is used for simulation. The error due to the staircase approximation of FDTD mesh is remedied by using CFDTD algorithm. The reflection coefficient simulation result with Debye dispersion is presented and compared with the measurement. CFDTD was also applied to analyze spiral antennas´ near-field beam (SAR) in the water medium.
Keywords :
absorbing media; finite difference time-domain analysis; spiral antennas; CFDTD algorithm; Debye dispersion; SAR; finite difference time domain method; lossy media; single arm Archimedean spiral antenna irradiation; staircase approximation; Biomedical monitoring; Dispersion; Electromagnetic heating; Finite difference methods; Hyperthermia; Microstrip antennas; Microwave radiometry; Spirals; Temperature sensors; Time domain analysis; Conformal FDTD; Debye Dispersion; Medical Antennas; Spiral Antenna;
Conference_Titel :
Radio and Wireless Symposium, 2008 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-1462-8
Electronic_ISBN :
978-1-4244-1463-5
DOI :
10.1109/RWS.2008.4463491
