Large current radiator for long range GPR applications
DOI:
https://doi.org/10.1109/ICATT.2017.7972629Keywords:
large current radiotor, ground penetrating radar, frequency dispertion of soil dielectrical propertiesAbstract
Some aspects of the Large Current Radiator construction for subsurface sounding applications at the depths of up to some hundred meters are considered. The antenna has to operate in a wide frequency band and transmit power effectively under the ground surface. It is shown that the antenna designed as a small horizontal magnetic loop with specific shape located close to the earth surface transmits power quite effectively when one of the wires, situated close the surface, is flat and the second is shielded by an envelope with certain electrical constants.References
H. F. Harmuth, Nonsinusoidal Waves for Radar and Radio Communication. N-Y, 1981.
V. Sugak, G. Klochko, E. Koropets, "Large current antennas in GPR applications," Electromagnetic Phenomena, Vol. 7, No. 1, p. 170-173, 2007. URI: http://www.emph.com.ua/18/sugak.htm.
R. H. Barfield, “Some experiments on the screening of radio receiving apparatus. Screened loops,” J. IEE, Vol. 62, p. 249, 1924.
H. Whiteside, R. King, “The loop antenna as a probe,” IEEE Trans. Antennas Propag., Vol. 12, No. 3, p. 291-297, May 1964. DOI: https://doi.org/10.1109/TAP.1964.1138213.
R. W. P. King, “The loop antenna for transmission and reception,” R. E. Collin, F. J. Zucker, Antenna Theory. NY: McGraw-Hill, 1969, Part 1, Chapter 11.
C. F. M. Carobbi, L. M. Millanta, L. Chiosi, “The high-frequency behavior of the shield in the magnetic-field probes,” Proc. of IEEE Int. Symp. on EMC, 21-25 Aug. 2000, Washington, USA. IEEE, 2000, pp. 35-40. DOI: https://doi.org/10.1109/ISEMC.2000.875533.
J. R. Wait, "Radiation resistance of a small circular loop in the presence of a conducting ground," J. Appl. Phys., vol. 24, No. 5, pp. 646-649, 1953. DOI: http://dx.doi.org/10.1063/1.1721344.
V. G. Sugak, "Electromagnetic field structure near the air-ground interface in the presence of inhomogeneous objects," Telecommun. Radio Engineering, vol. 63, No. 7, pp. 621-636, 2005. DOI: http://doi.org/10.1615/TelecomRadEng.v63.i7.40.
Jianming Jon, The Finite Element Method in Electromagnetic. New York: John Wiley & Song, 2002.
