Title :
Estimation of current distribution by near-field measurement
Author :
Qiang Chen ; Hangai, M. ; Sawaya, K.
Author_Institution :
Dept. of Electr. Commun., Tohoku Univ., Sendai, Japan
Abstract :
A method to estimate the current distribution by measuring the near-field distribution has been proposed and applied to the Yagi-Uda antenna. The optimum parameters to scan the near field, such as the positions for measuring the near field, the area of scanning plane, and the number of measuring points for near field measurement have been determined by using the condition number. Numerically estimated results are presented and compared with the real data, confirming the validity of the method.
Keywords :
Yagi antenna arrays; antenna radiation patterns; antenna testing; current distribution; numerical analysis; Yagi-Uda antenna; condition number; current distribution estimation; measuring point number; measuring positions; near-field distribution; near-field measurement; optimum parameters; scanning plane area; Antenna measurements; Circuits; Current distribution; Current measurement; Dipole antennas; Electric variables measurement; Impedance; Integral equations; Magnetic field measurement; Probes;
Conference_Titel :
Environmental Electromagnetics, 2003. CEEM 2003. Proceedings. Asia-Pacific Conference on
Conference_Location :
Hangzhou, China
Print_ISBN :
7-5635-0802-3
DOI :
10.1109/CEEM.2003.238294
