Novel SIE Implementations for Efficient and Accurate Electromagnetic Simulations of Zero-index Materials

Date

2019-01-01

Author

Ibili, H.
Koyaz, Y.
Ozmu, U.
Karaosmanoglu, B.
Ergül, Özgür Salih

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We present novel surface-integral-equation formulations for efficient and accurate iterative solutions of electromagnetic problems involving zero-index (ZI) and near-zero-index (NZI) materials. When applied to materials with small permittivity and/or permeability values, conventional implementations employing traditional formulations tend to become inefficient, inaccurate, or both. Such numerical issues arise mainly due to low-frequency breakdowns related to inner problems, as well as due to deteriorating balance of inner and outer terms. By investigating formulations in limit cases, we develop novel formulations by properly balancing integral-equation operators. We show that the resulting formulations can provide efficient, accurate, and stable analysis of three-dimensional structures having ZI and NZI materials with arbitrarily small permittivity/permeability values.

Subject Keywords

Metamaterials, Scattering

URI

https://hdl.handle.net/11511/54142

DOI

https://doi.org/10.1109/piers-spring46901.2019.9017711

Collections

Department of Electrical and Electronics Engineering, Conference / Seminar

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Citation Formats

H. Ibili, Y. Koyaz, U. Ozmu, B. Karaosmanoglu, and Ö. S. Ergül, “Novel SIE Implementations for Efficient and Accurate Electromagnetic Simulations of Zero-index Materials,” 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/54142.