Modelling Yagi-Uda antennas using point source approximation
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A point source approximation is shown to be an efficient algorithm for calculating the near and far fields of Yagi-Uda antennas for the evaluation of the human radiation exposure zone boundaries. Results of a 12-element Yagi-Uda antenna compared to numerical electromagnetics code show that the modelled antenna field strength and front-to-back ratio were calculated to within 0.10 and 0.34 dB, respectively, while the occupational and general public exposure zone boundary distances were calculated to within 0.23 and 0.14 m, respectively.
Copyright 2004 Institution of Engineering and Technology. Reproduced in accordance with the copyright policy of the publisher. This journal is available online - use hypertext links