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Reconfiguration of a Metallic Dipole Antenna Using Plasma Parabolic Reflectors

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Abstract:

This work investigates the radiation pattern of a 5 GHz antenna composed of a metal dipole antenna and surrounded by fluorescent tubes which act as reflectors (plasma medium). The study emphasizes the role of plasma reflectors in improving the antenna’s efficiency by controlling the radiation pattern. The electrical parameters of the plasma medium are modeled by Drude model in Comsol Multyphysics for different voltage discharges. Also, a CST software is used to simulate metallic dipole antenna reconfigurability. The results show that the plasma can be used as a good reflector when its permittivity is negative () and . Moreover, it is shown that with increasing the discharge voltage, the plasma reflectivity increases, this is because the gain increases and the directivity of the antenna considerably changes. Keywords: Reflector, Plasma, COMSOL, CST, Gain, Directivity.

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Periodical:

Solid State Phenomena (Volume 380)

Pages:

53-62

DOI:

https://doi.org/10.4028/p-0UMzZn

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Online since:

November 2025

Authors:

Ayoub El Jaouhari*, Abdelhak Missaoui, Majid Rochdi, Morad El Kaouini

Keywords:

COMSOL, CST, Directivity, Gain, Plasma, Reflector

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© 2025 Trans Tech Publications Ltd. All Rights Reserved

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