Title :
A combined complex image-induced EMF solution of vertical antennas above a dielectric half-space
Author :
Shubair, R.M. ; Chow, Y.L.
Author_Institution :
Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada
fDate :
June 28 1993-July 2 1993
Abstract :
A simple closed-form expression for the input impedance of a vertical antenna above a dielectric half-space is derived. The expression is obtained from the induced EMF (electromotive force) method using a complex-image spatial Green´s function for the vector potential. The input impedance of the vertical antenna is found as the superposition of the antenna´s self-impedance in free-space and the mutual impedances due to the quasi-dynamic and complex image antennas. Numerical results verify the accuracy of the derived impedance expression for vertical antennas above a dielectric half-space with or without loss.<>
Keywords :
Green´s function methods; antenna theory; dipole antennas; electric impedance; electric potential; accuracy; complex-image spatial Green´s function; dielectric half-space; electromotive force; induced EMF; input impedance; mutual impedances; self-impedance; vector potential; vertical antenna; Antenna arrays; Antenna feeds; Antenna theory; Closed-form solution; Current distribution; Dielectric losses; Dipole antennas; Green´s function methods; Impedance; Permittivity;
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.1993.385173
