A novel CEM technique for modeling electromagnetic scattering from metasurfaces

Date

2020-03-01

Author

ÖZGÜN, ÖZLEM
Mittra, Raj
Kuzuoğlu, Mustafa

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This paper presents a novel computational electromagnetics (CEM) technique, which hybridizes the periodic finite element method (FEM) with the method of moments (MoM), for efficient numerical modeling of electromagnetic scattering from metasurfaces consisting of truncated periodic or locally varying quasi-periodic array of structures. Based on the quasi-periodic nature of metasurfaces, the periodic FEM is employed to generate high-level macro basis functions (MBFs). Following that, a reduced MoM matrix is formed by using the MBFs with unknown coefficients belonging to each cell of the periodic array. The proposed hybrid method reduces the computational load significantly when compared with conventional numerical methods, especially for electrically large truncated metasurfaces involving arbitrarily inhomogeneous unit cells. Various numerical results are presented, and the accuracy and performance of the proposed method are tested against commercial codes, as well as an in-house FEM code.

Subject Keywords

Modelling and Simulation, Electrical and Electronic Engineering, Computer Science Applications

URI

https://hdl.handle.net/11511/46435

Journal

INTERNATIONAL JOURNAL OF NUMERICAL MODELLING-ELECTRONIC NETWORKS DEVICES AND FIELDS

DOI

https://doi.org/10.1002/jnm.2681

Collections

Department of Electrical and Electronics Engineering, Article

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Citation Formats

Ö. ÖZGÜN, R. Mittra, and M. Kuzuoğlu, “A novel CEM technique for modeling electromagnetic scattering from metasurfaces,” INTERNATIONAL JOURNAL OF NUMERICAL MODELLING-ELECTRONIC NETWORKS DEVICES AND FIELDS, pp. 0–0, 2020, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/46435.