Design of a Tunable Subwavelength Plasma-Based Resonator for Electrically Small Antenna Applications in L-band

Adrien Laffont (1, 2, 3) , Théo Delage (1) , Romain Pascaud (1) , Marjorie Grzeskowiak (1) , Cyril Cailhol (1) , Thierry Callegari (4) , Laurent Liard (4) , Olivier Pascal (5) , Jean-Pierre Adam (2)

1 DEOS - Département Electronique, Optronique et Signal
2 DAM/GRAMAT - GRAMAT
3 LAPLACE - LAboratoire PLasma et Conversion d'Energie
4 LAPLACE-GREPHE - Groupe de Recherche Energétique, Plasmas et Hors Equilibre
5 LAPLACE-GRE - Groupe de Recherche en Electromagnétisme

A preliminary study of the design of an electrically small plasma-based resonator using a localized surface plasmon resonance (LSPR) above 1 GHz is presented. Such a resonator is intended to be used to develop an electrically small antenna with frequency agility. This resonator consists of a plasma discharge confined in a hemispherical glass shell 3 cm in diameter on a ground plane. From 1 to 1.5 GHz, the plasma electron density required to achieve the LSPR must be between 0.5 × 1011 and 1.4×1011 cm−3. Plasma losses are taken into account in this study and provide information on the required gas pressure. Typically for neon gas, the working pressure must be around 50 mTorr. A practical implementation using a miniature inductively coupled plasma (mICP) source is finally discussed.

Mots clés: Antennas; Electrically small antennas; Epsilon negative material; Localized surface plasmon resonance; Plasma; Plasma devices

Domaines: Traitement du signal et de l'image [eess.SP]

Adrien Laffont, Théo Delage, Romain Pascaud, Marjorie Grzeskowiak, Cyril Cailhol, et al.. Design of a Tunable Subwavelength Plasma-Based Resonator for Electrically Small Antenna Applications in L-band. the 14th European Conference on Antennas and Propagation (EUCAP 2020), Mar 2020, Copenhague, Denmark. pp.1-4, ⟨10.23919/EuCAP48036.2020.9135464⟩. ⟨hal-02909134⟩