https://scholars.lib.ntu.edu.tw/handle/123456789/580856
標題: | Enhancing Electromagnetic Backscattering Responses for Target Detection in the near Zone of Near-Field-Focused Phased Array Antennas | 作者: | Chou H.-T Gao W.-J Zhou J You B He X.-H. HSI-TSENG CHOU |
關鍵字: | Electromagnetic wave scattering; Numerical methods; Radar antennas; Radar cross section; Electrically large; Electromagnetic scattering; EM scattering; Far field analysis; Full-wave simulations; Metal spheres; Near fields; Phased array antennas; Antenna phased arrays | 公開日期: | 2021 | 卷: | 69 | 期: | 3 | 起(迄)頁: | 1658-1669 | 來源出版物: | IEEE Transactions on Antennas and Propagation | 摘要: | The analysis of electromagnetic (EM) scattering from a target located in the near zone of an electrically large near-field-focused (NFF) array of antennas is presented. The analysis first examined the EM scattering from a metal sphere, attempting to create a reference for comparison with other targets in a fashion analogous to conventional far-field analysis of radar cross section (RCS). Realistic targets were afterward examined and analyzed to exhibit their RCS characteristics. A numerical simulation-based maximization of EM scattering fields for effective target detection in the near zone of antenna was developed, which allows one to obtain a set of optimum element excitation weightings by applying the steepest ascent method (SAM). RCS phenomena were validated by full-wave simulations and experimental measurements to justify the feasibility of the proposed concept. ? 1963-2012 IEEE. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85102263925&doi=10.1109%2fTAP.2020.3026878&partnerID=40&md5=81ea5fadfe0f9569080a0f183c9a37d0 https://scholars.lib.ntu.edu.tw/handle/123456789/580856 |
ISSN: | 0018926X | DOI: | 10.1109/TAP.2020.3026878 |
顯示於: | 電機工程學系 |
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