Proper interpretation of source excitations for resolving ostensible excessive power gains of metamaterial resonances

Mou-Kehn Ng; L. Shafai

doi:10.1049/el.2009.0822

Proper interpretation of source excitations for resolving ostensible excessive power gains of metamaterial resonances

Mou-Kehn Ng^*, L. Shafai

^*Corresponding author for this work

Institute of Communications Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The aim of this communication is to resolve the anomalous phenomenon of extremely large radiated powers of antennas embedded within metamaterial layers apparently achievable under resonances. The essence of the discussion rests on the law of power conservation and causality conditions. A slotted spherical dipole coated with two layers of homogeneous materials is chosen to illustrate the concepts, and the classical approach for solving boundary-value problems via separation of variables is used to treat the structure.

Original language	English
Pages (from-to)	599-601
Number of pages	3
Journal	Electronics Letters
Volume	45
Issue number	12
DOIs	https://doi.org/10.1049/el.2009.0822
State	Published - 19 Jun 2009

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abstract = "The aim of this communication is to resolve the anomalous phenomenon of extremely large radiated powers of antennas embedded within metamaterial layers apparently achievable under resonances. The essence of the discussion rests on the law of power conservation and causality conditions. A slotted spherical dipole coated with two layers of homogeneous materials is chosen to illustrate the concepts, and the classical approach for solving boundary-value problems via separation of variables is used to treat the structure.",

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AB - The aim of this communication is to resolve the anomalous phenomenon of extremely large radiated powers of antennas embedded within metamaterial layers apparently achievable under resonances. The essence of the discussion rests on the law of power conservation and causality conditions. A slotted spherical dipole coated with two layers of homogeneous materials is chosen to illustrate the concepts, and the classical approach for solving boundary-value problems via separation of variables is used to treat the structure.

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