Effective approach to generate electrically large rough surfaces and the application to EM scattering problems. Issue 4 (21st January 2020)

• Record Type: Journal Article
• Authors: Li, Jinxing; Wang, Liuying; Zhang, Min; Fan, Wenna; Wei, Pengbo
• Is Part Of: IET microwaves, antennas & propagation. Volume 14:Issue 4(2020)
• Page Start: 233
• Page End: 240
• Publication Date: 2020-01-21
• Subjects: rough surfaces -- electromagnetic wave scattering; rough surfaces -- EM scattering problems -- electromagnetic scattering problems -- surface sampling interval -- electrically large rough surfaces -- microwave bands -- calculation efficiency -- first‐order SSA; Microwaves -- Periodicals; Microwave antennas -- Periodicals; Antennas (Electronics) -- Periodicals; Radio wave propagation -- Periodicals; Microwave communication systems -- Periodicals; 621.381305
• DOI: 10.1049/iet-map.2019.0184
• Languages: English
• ISSNs: 1751-8725

Abstract

Abstract : The small slope approximation (SSA) is a widely employed way to analyse the electromagnetic (EM) scattering problems from rough surfaces. However, it requires a surface sampling interval less than one‐eighth of the wavelength, which makes it suffer from the problems of large memory consumption and low calculation efficiency for large rough surfaces, especially for higher microwave bands. In this study, a new way to generate the electrically large rough surfaces is proposed and its application to the calculation of EM scattering field is introduced on the base of first‐order SSA. The calculation accuracy and consumed computer memory of the proposed method analysed by numerical comparisons show good performance.