ANALYSIS OF THE NICOLSON-ROSS-WEIR METHOD FOR CHARACTERIZING THE ELECTROMAGNETIC PROPERTIES OF ENGINEERED MATERIALS
| Autor: | Raoul O. Ouedraogo, Edward J. Rothwell, Premjeet Chahal, Jonathan L. Frasch, Sean M. Ellison |
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| Rok vydání: | 2016 |
| Předmět: |
Lossless compression
Permittivity Radiation Materials science Mathematical analysis Metamaterial 020206 networking & telecommunications 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Permeability (electromagnetism) 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering 0210 nano-technology |
| Zdroj: | Progress In Electromagnetics Research. 157:31-47 |
| ISSN: | 1559-8985 |
| DOI: | 10.2528/pier16071706 |
| Popis: | A method for predicting the behavior of the permittivity and permeability of an engineered material by examining the measured S-parameters of a material sample is devised, assuming that the sample is lossless and symmetric. The S-parameter conditions under which the material parameters extracted using the Nicolson-Ross-Weir method may be associated with a lossless homogeneous material are described. Also, the relationship between the signs of the real and imaginary parts of the permittivity and permeability are determined, both when the extracted material parameters are real and when they are complex. In particular, the conditions under which metamaterials exhibit double-negative properties may be predicted from the S-parameters of a metamaterial sample. The relationships between material characteristics and the S-parameters should prove useful when synthesizing materials to have certain desired properties. Examples, both from experiment and simulation, demonstrate that the relationships may be used to understand the behavior of several different categories of engineered materials, even when the materials have appreciable loss. |
| Databáze: | OpenAIRE |
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