Analysis of Scattering from PEC Targets Located in Half-space Environment Using Novel DDM

• Published in: 2021 International Conference on Microwave and Millimeter Wave Technology (ICMMT) pp. 1 - 3
• Main Authors: Gu, Zongjing, Liang, Shengli, Liu, Wenhui, Yang, Baoguo
• Format: Conference Proceeding
• Language: English
• Published: IEEE 23.05.2021
• Subjects: Couplings; Green products; Memory management; Microwave technology; Millimeter wave technology; Scattering; Surface impedance
• DOI: 10.1109/ICMMT52847.2021.9618375

A novel domain decomposition method named FBF-DDM is proposed for efficient and accurate scattering analysis of perfect electric conductor (PEC) targets situated in half-space environment. Innovatively, the target surface is divided into several open subdomains according to the distribution of basis functions using this proposed FBF-DDM, so there is no need to introduce any artificial surface or buffer region between adjacent subdomains. Furthermore, the stratified-medium dyadic Green's function is adopted to deal with this situation that targets located in half-space environment. For the purpose of improving simulation accuracy and reducing memory requirement, each subdomain is solved independently by using direct solution, and the coupling between different subdomains is calculated in the manner of near field to avoid the storage of mutual impedance matrix. Numerical results demonstrate the validity and the stability of the proposed method.