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A solution to the problem of scattering from a perfect electromagnetic conducting (PEMC) circular cylinder buried inside a half-space and excited by an infinite electric line source is provided. The line source is parallel to the cylinder axis, and is located in the other half-space. The two half spaces are isorefractive to each other. The source fields when incident at the planar interface separating the two half spaces, generate fields that are transmitted into the half-space where the cylinder is. These fields then become the known basic incident fields for the buried PEMC cylinder. Scattering of these incidents fields by the cylinder will consequently generate fields at the interface that get reflected back into the same half-space and transmitted frontward into the source half-space, all of which are unknown. Imposing appropriate boundary conditions at the surface of the buried cylinder and at a specified point on the interface, enables the evaluation of these unknown fields. The refection coefficient at the specified point is then computed for cylinders of different sizes, to demonstrate how it varies with the PEMC admittance of the buried cylinder, the intrinsic impedance ratio of the two isorefractive half-spaces, and the burial depth of the cylinder.
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D. Erricolo and P. L. E. Uslenghi, "Exact radiation and scattering for an elliptic metal cylinder at the interface between isorefractive half space," IEEE Trans. Antennas Propag., vol. 52, no. 9, pp. 2214-2225, Sep. 2004.
A. N. Askarpour and P. L. E. Uslenghi, "Exact radiation from dipole antennas on prolate spheroids coated with isorefractive and anti-isorefractive layers," IEEE Trans. Antennas Propag., vol. 60, no. 4, pp. 2129-2133, Apr. 2012.
A. N. Askarpour and P. L. E. Uslenghi, "Exact radiation from dipole antennas on oblate spheroids coated with isorefractive and anti-isorefractive layers," IEEE Trans. Antennas Propag., vol. 60, no. 11, pp. 5476-5479, Nov. 2012.
J. Zhang and X. He, "Asymptotic diffraction of a PEC cylinder located at a plane interface between isorefractive half-spaces," IEEE Trans. Antennas Propag., vol. 45, no. 6, pp. 3282-3287, Jun. 2017.
S. F. Mahmoud, S. M. Ali, and J. R. Wait, "Electromagnetic scattering from a buried cylindrical inhomogeneity inside a lossy earth," Radio Sci., vol. 16, no. 6, pp. 1285-1298, Nov.-Dec. 1981.
B. P. D'Yakonov, "The diffraction of electromagnetic waves by a circular cylinder in a homogeneous half space," Bull. Acad. Sci., U.S.S.R.., Ser., vol. 9, pp. 950-955, 1959.
A. Q. Howard, Jr., "The electromagnetic fields of a sub-terranean cylinder inhomogeneity excited by a line source, Geophysics, vol. 37, no. 6, pp. 975-984, Jun. 1972.
S. O. Ogunade, "Electromagnetic response of an embedded cylinder for line current excitation," Geophysics, vol. 46, no. 1, pp. 45-52, Jan. 1981.
Q. A. Naqvi and A. A. Rizvi, "Scattering from a cylindrical object buried in a geometry with parallel plane interfaces," PIER, vol. 27, pp. 19-35, 2000.
M. Di Vico, F. Frezza, L. Pajewski, and G. Schettini, "Scattering by a finite set of perfectly conducting cylinders buried in a dielectric half-space: a spectral-domain solution," IEEE Trans. Antennas Propag., vol. 53, no. 2, pp. 719-727, Feb. 2005.
F. Frezza, L. Pajewski, C. Ponti, G. Schettini, and N. Tedeschi, "Electromagnetic scattering by a metallic cylinder buried in a lossy medium with the cylindrical wave approach," IEEE Geosci. Remote Sens. Lett., vol. 9, pp. 179-183, 2012.
F. Frezza, L. Pajewski, C. Ponti, and G. Schettini, "Line source scattering by buried perfectly conducting circular cylinders," Int. J. Antennas Propag., vol. 2012, 7 pages, 2012.
M. Nasr, E. Hashish, and I. Eshrah, "Fast analytical evaluation of EM scattered fields due to buried cylinders," in Proc. IEEE AP-S Int. Symp., 2013, Lake Buena Vista, FL, USA, Jul. 7-13, 2013.
M. A. Nasr, I. A. Eshrah, and E. A. Hashish, "Electromagnetic scattering from a buried cylinder using a multiple reflection approach: TM case," IEEE Trans. Antennas Propag., vol. 62, no. 5, pp. 2702-2707, May 2014.
A.-K. Hamid and F. Cooray, "Scattering by buried PEMC cylinder using iterative procedure", in Proc. 18th Mediterranean Microwave Symposium (MMS2018), Istanbul, Turkey, 31 Oct.-3 Nov., 2018.
A.-K. Hamid and F. Cooray, "Scattering from a buried PEMC cylinder illuminated by a normally incident plane wave propagating in free space", Advanced Electromagnetics Journal, vol. 8, pp. 1-7, 2019.
I. Diamandi and J. N. Sahalos, "Frequency and time domain analysis of the scattered field of buried dielectric targets," Archiv fur Electrotechnik, vol. 77, pp. 441-449, Sep. 1991.
J. L. Izadian, L. Peters, Jr., and J. H. Richmond, "Computation of scattering from penetrable cylinders with improved numerical efficiency," IEEE Trans. Geosci. Remote Sens., vol. GE-22, no. 1, pp. 52-61, Jan. 1984.
Y. Z. Umul, "Scattering of electromagnetic waves by a perfect electromagnetic conductor half-screen," Optik, vol. 181, pp. 383-388, Mar. 2019.
R. Ruppin, "Scattering of electromagnetic radiation by a perfect electromagnetic conductor cylinder," J. Electromagn. Waves Appl., vol. 20, pp. 1853-1860, 2006.