DocumentCode :
1015673
Title :
Loaded horizontal antenna over an imperfect ground
Author :
Samii, Y. Rahmat ; Parhami, P. ; Mittra, R.
Author_Institution :
California Inst. of Technology, Pasadena, CA, USA
Volume :
26
Issue :
6
fYear :
1978
fDate :
11/1/1978 12:00:00 AM
Firstpage :
789
Lastpage :
796
Abstract :
The Fresnel reflection coefficient technique is employed to establish an E -field integral equation for the antenna current. A resistive loading of the form \\Lambda (x) = \\Lambda _{0}/(1 - |x|/L) is used to load the antenna. An optimization technique is discussed for determining the value of critical loading \\Lambda _{0}^{c} , which enforces a traveling wave current on the antenna. Results are given for the critical loading parameters, antenna currents, input impedances and radiation patterns versus different antenna dimensions and ground permittivities and conductivities. Some representative time-domain results for such loaded antennas are also included.
Keywords :
Elevated antennas; Loaded antennas; Antenna radiation patterns; EMP radiation effects; Electromagnetics; Feeds; Frequency; Fresnel reflection; Impedance; Laboratories; Loaded antennas; Reflector antennas;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.1978.1141942
Filename :
1141942
Link To Document :
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