Title :
Poynting vector of a horizontal 3-element Yagi-Uda antenna in the presence of a conductor half-space
Author :
Kawakami, H. ; Sato, G.
Author_Institution :
Antenna Giken Co., Ltd., Omiya, Japan
fDate :
June 28 1993-July 2 1993
Abstract :
The authors calculate Poynting vector for a horizontal three-element Yagi-Uda antenna for both maximum gain and maximum F/B ratio in different conditions and give the result in the form of maps using arrows to represent the Poynting currents. The use of arrows makes it possible to give a view of the overall flows of the Poynting currents as well as the direction and size of the Poynting vector at a particular point; it is possible to show how radio waves are transmitted around the antenna and the distribution of their strength.<>
Keywords :
Yagi antenna arrays; current distribution; vectors; Poynting currents; Poynting vector; conductor half-space; horizontal three-element Yagi-Uda antenna; radio waves; Antennas and propagation; Conductors; Dipole antennas; Directive antennas; Earth; Impedance; Load flow; Reflection; Surface waves; Transmitting antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1993. AP-S. Digest
Conference_Location :
Ann Arbor, MI, USA
Print_ISBN :
0-7803-1246-5
DOI :
10.1109/APS.1993.385494
