Near-field to far-field transformation applied to UHF antennas over lossy ground
| Autor: | Nicolas Bourey, Muriel Darces, Marc Helier, Yves Chatelon |
|---|---|
| Přispěvatelé: | Laboratoire d'Electronique et Electromagnétisme (L2E), Sorbonne Université (SU) |
| Rok vydání: | 2019 |
| Předmět: |
Physics
Antenna Design Directional antenna Acoustics Near-Field to Far-Field Transformation Astrophysics::Instrumentation and Methods for Astrophysics 020206 networking & telecommunications Near and far field 02 engineering and technology Modelling and Measurements Biconical antenna [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism Dipole Transformation (function) Surface wave Microwave Measurements 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Antenna (radio) Omnidirectional antenna Computer Science::Information Theory |
| Zdroj: | International Journal of Microwave and Wireless Technologies International Journal of Microwave and Wireless Technologies, Cambridge University Press/European Microwave Association 2019, pp.1-6. ⟨10.1017/S1759078719001272⟩ |
| ISSN: | 1759-0795 1759-0787 |
| DOI: | 10.1017/s1759078719001272 |
| Popis: | This paper deals with a near-field to far-field transformation able to predict the radiation of UHF antennas located over a lossy ground. From in-situ near-field measurements, an equivalent set of dipole sources is obtained as a model of the characterized antenna. The paper details the main steps of the transformation and describes the specific experimental set-up designed for the application. Simple directional antennas (monopoles array) as well as more complex omnidirectional antennas (like a biconical antenna as a scaled-down model of a HF antenna) have been tested in realistic environments. This approach is very efficient for separating the contributions of the radiated waves: the sky wave and the surface wave. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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