Analysis of wire antennas in the presence of a conducting half space. Part III. The buried antenna
Abstract
The report extends an earlier one dealing with the reflection coefficient approximation (RCA) for modeling objects located near an interface between electrically different half spaces. The procedure to handle objects on opposite sides of the interface is described. The method, which is denoted as the transmission coefficient approximation (TCA), is based on a rayoptics formulation and an assumed reciprocity along a given ray path. An integralequation, momentmethod technique for wires, when combined with the RCATCA, permits modeling the response of antennas above ground to buried objects. Similar problems of geophysical interest, as well as those of the more conventional antenna interface, may also be modeled. Sample results to illustrate how the technique may be applied are presented. A comparison of results is made between the RCATCA and those obtained from a rigorous treatment based on the Sommerfeld integrals to demonstrate the validity of the approximate approach. The approximate approach offers much greater efficiency (approximately 50 times faster) relative to the rigorous approach.
 Authors:
 Publication Date:
 Research Org.:
 California Univ., Livermore (USA). Lawrence Livermore Lab.
 OSTI Identifier:
 7112799
 Report Number(s):
 UCRL52228
 DOE Contract Number:
 W7405ENG36
 Resource Type:
 Technical Report
 Country of Publication:
 United States
 Language:
 English
 Subject:
 42 ENGINEERING; ANTENNAS; INTEGRAL EQUATIONS; INTERFACES; NUMERICAL SOLUTION; UNDERGROUND; ELECTRICAL EQUIPMENT; EQUATIONS; EQUIPMENT; LEVELS; 420800*  Engineering Electronic Circuits & Devices (1989)
Citation Formats
Miller, E.K., and Deadrick, F.J. Analysis of wire antennas in the presence of a conducting half space. Part III. The buried antenna. United States: N. p., 1977.
Web.
Miller, E.K., & Deadrick, F.J. Analysis of wire antennas in the presence of a conducting half space. Part III. The buried antenna. United States.
Miller, E.K., and Deadrick, F.J. Fri .
"Analysis of wire antennas in the presence of a conducting half space. Part III. The buried antenna". United States.
doi:.
@article{osti_7112799,
title = {Analysis of wire antennas in the presence of a conducting half space. Part III. The buried antenna},
author = {Miller, E.K. and Deadrick, F.J.},
abstractNote = {The report extends an earlier one dealing with the reflection coefficient approximation (RCA) for modeling objects located near an interface between electrically different half spaces. The procedure to handle objects on opposite sides of the interface is described. The method, which is denoted as the transmission coefficient approximation (TCA), is based on a rayoptics formulation and an assumed reciprocity along a given ray path. An integralequation, momentmethod technique for wires, when combined with the RCATCA, permits modeling the response of antennas above ground to buried objects. Similar problems of geophysical interest, as well as those of the more conventional antenna interface, may also be modeled. Sample results to illustrate how the technique may be applied are presented. A comparison of results is made between the RCATCA and those obtained from a rigorous treatment based on the Sommerfeld integrals to demonstrate the validity of the approximate approach. The approximate approach offers much greater efficiency (approximately 50 times faster) relative to the rigorous approach.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Feb 25 00:00:00 EST 1977},
month = {Fri Feb 25 00:00:00 EST 1977}
}

Finitely conducting, infinitely long, cylindrical wire in the presence of a plane wave (emp)
The timedomain current induced in an infinitely long, finitely conducting wire in the presence of a plane electromagnetic wave with its magnetic field perpendicular to the wire axis is determined by first finding the frequencydomain (phasor) solution. This is accomplished by using both a magnetic vector potential and an electric vector potential, and then treating the problem as a boundaryvalue problem. The timedomain current is found by performing the inverse Fourier transform numerically. Results indicate that the early time behavior is essentially that of a lossless wire, and the major effect is that the current dies out for large timemore »