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ABSTRACT
A novel theory based on the reciprocity theorem is presented for computing the plane wave scattered field of an arbitrary target, from its scattered field due to near-field illumination. The target is supposed to be illuminated by a transmitter probe on a cylindrical surface and the scattered near-field data is recorded in the near-field. The presented theory constructs a bridge between the scattered field due to the near-field illumination by a transmitter probe and that of plane wave illumination. Thus, referring to the definition of Radar Cross-Section (RCS) that assumes the incident field to be a plane wave, the RCS of the target can be analytically evaluated. For the verification of the proposed method, it is applied to an infinite conducting circular cylinder, which has an analytic solution for the infinite line source as a near-field source. Using the proposed theory the scattered field of such a target under plane wave incidence is evaluated, which is exactly identical to the same analytical scattered field under plane wave illumination.
Additional information
Notes on contributors
Mohammad Alian
Mohammad Alian received the BSc degree in electrical engineering from the University of Birjand, Birjand, Iran, in 2011, and the MSc degree in electrical engineering from the Amirkabir University of Technology, Tehran, Iran, in 2013. He is currently pursuing the PhD degree in electrical engineering, majoring in telecommunications at the Iran University of Science and Technology, Tehran, Iran. His current research interests include antenna and radar cross-section (RCS) near-field measurement and numerical techniques in computational electromagnetics with a focus on antenna and RCS problems. Email: [email protected].
Homayoon Oraizi
Homayoon Oraizi received the BEE degree from the American University of Beirut, Lebanon, in 1967, and the MSc and PhD degrees in electrical engineering from Syracuse University, Syracuse, NY, USA, in 1969 and 1973, respectively. He is currently a full professor of electrical engineering at Iran University of Science and Technology. In 2006, he was elected as an exemplary nationwide University Professor in Iran. He has authored or co-authored over 300 papers in international journals and conferences. He is listed as an Elite Engineer by the Iranology Foundation. He was listed in 1999 Who’s Who in the World.
Ayaz Ghorbani
Ayaz Ghorbani received the postgraduate Diploma, MPhil, and PhD degrees in electrical and communication engineering and a postdoctoral degree from the University of Bradford, Bradford, UK, in 1984, 1985, 1987, and 2004, respectively. Since 1987, he is with the Department of Electrical Engineering, Amirkabir University of Technology, Tehran, Iran. In 2004, he was on sabbatical leave at Bradford University. Dr Ghorbani was the recipient of a John Robertshaw Travel Award, a URSI Young Scientists Award from the General Assembly of URSI, Prague, Czech Republic, in 1990, and the Seventh and Tenth Khwarazmi International Festival Prizes, in 1993 and 1995, respectively. Email: [email protected].
Ali Abdolali
Ali Abdolali received the BSc degree in electrical engineering from the University of Tehran, Tehran, Iran, the MSc degree in electrical engineering from Tarbiat Modares University, Tehran, and the PhD degree in electrical engineering from the Iran University of Science and Technology (IUST), Tehran, in 1998, 2000, and 2010, respectively. He is currently an associate professor of electromagnetic engineering with the Department of Electrical Engineering, IUST. He has authored or co-authored over 70 papers in international journals and conferences. His current research interests include electromagnetic wave scattering, radar cross section and RCSR. Email: [email protected].