Thin‐slot formalism for the split‐field FDTD analysis of periodic structure. Issue 5 (31st January 2017)

• Record Type: Journal Article
• Authors: Xu, Boao; Yi, Yun; Chen, Bin; Yin, Qin; Xiong, Run
• Is Part Of: International journal of RF and microwave computer-aided engineering. Volume 27:Issue 5(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-01-31
• Subjects: frequency selective surface (FSS) -- split‐field FDTD -- thin‐slot formalism; Microwave devices -- Computer-aided design -- Periodicals; Computer-aided engineering -- Periodicals; 621.3813
• DOI: 10.1002/mmce.21087
• Languages: English
• ISSNs: 1096-4290

Abstract

Abstract: An expression of the thin‐slot formalism is presented to alleviate the gridding of the split‐field finite‐difference time‐domain (FDTD) solution for periodic structure. The varying auxiliary‐field ( P ¯, Q ¯ ) and split‐field ( P ¯ a, Q ¯ a ) distributions near the slots are analytically derived from the varying field ( E ¯, H ¯ ). The update equations for the split‐field FDTD are obtained by incorporating those varying field distributions into the split‐field equations in integral form. A frequency selective surface (FSS) structure is applied to verify the proposed method. The results indicate that the computational efficiency is improved.