Title :
FDTD method analysis of a monopole antenna mounted on a conducting rectangular box
Author :
Li Chen ; Uno, T. ; Adachi, S. ; Luebbers, R.J. ; Kunz, K.S.
Author_Institution :
Dept. of Electr. Eng., Tohoku Univ., Sendai, Japan
Abstract :
The characteristics of a monopole antenna attached to a conducting object have been analyzed by a method of moments, wire-grid model. K. Fujimoto et al. (1982) studied the characteristics of a monopole antenna attached to a conducting rectangular box. However, the results of the wire-grid method depend on the wire radius and the arrangement of mesh. R. Yamaguchi et al. (1991) analyzed the radiation pattern of the same geometry using the method of moments, but the input impedance of the antenna is not reported. In the present work, the finite-difference time-domain (FDTD) method is applied to this geometry. The radiation pattern and the input impedance are calculated. The FDTD radiation patterns are compared with both moment method and experimental results, and FDTD impedance calculations are compared with measurements. The results calculated with the FDTD method agree with those of the moment method and the experiments. This shows that FDTD is an accurate method for this application.<>
Keywords :
antenna radiation patterns; finite difference time-domain analysis; monopole antennas; FDTD; conducting rectangular box; finite-difference time-domain; input impedance; method of moments; monopole antenna; radiation pattern; wire radius; wire-grid model; Absorption; Antenna radiation patterns; Finite difference methods; Geometry; Impedance measurement; Magnetic field measurement; Moment methods; Time domain analysis; Voltage; Wideband;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1992. AP-S. 1992 Digest. Held in Conjuction with: URSI Radio Science Meeting and Nuclear EMP Meeting., IEEE
Conference_Location :
Chicago, IL, USA
Print_ISBN :
0-7803-0730-5
DOI :
10.1109/APS.1992.221537
