Shielding Effectiveness Estimation by using Monopole-receiving Antenna and Comparison with Dipole Antenna
| Autor: | Nebojsa Doncov, Natasa J. Nesic |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Coaxial antenna Loop antenna Acoustics 020208 electrical & electronic engineering Antenna measurement 020206 networking & telecommunications 02 engineering and technology Antenna factor Radiation pattern law.invention law 0202 electrical engineering electronic engineering information engineering Dipole antenna Electrical and Electronic Engineering Antenna (radio) Monopole antenna |
| Zdroj: | Frequenz. 70:191-201 |
| ISSN: | 2191-6349 0016-1136 |
| DOI: | 10.1515/freq-2015-0203 |
| Popis: | In this paper, a numerical analysis of shielding properties of a protective metal enclosure has been performed by simulating a receiving antenna placed inside. Here, the main focus is put on the monopole antenna type. This antenna type is used in an experimental set-up to measure the shielding effectiveness (SE) of the enclosure as often as some other antennas such as dipole. Numerical model, based on the Transmission-Line Matrix (TLM) method, is applied to numerically investigate an impact this antenna might have on a detected level of electromagnetic (EM) field when it is used in the SE measurements. As in experiments, the estimation of SE of an enclosure in the numerical model is performed based on the current induced on the antenna, directly provided by a compact TLM wire model. The model accuracy is verified through a comparison with the experimental results from the literature. The analysis includes the monopole antenna with different radii and lengths, in order to consider changes in the resonant frequencies and the SE level of enclosure. Finally, the enclosure with either the monopole or the dipole is simulated in order to compare their influence on EM field distribution inside the enclosure. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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