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Single-fed circularly polarized dielectric resonator antenna using a uniaxial anisotropic material

Morales Pena, Carlos David and Morlaas, Christophe and Chabory, Alexandre and Pascaud, Romain and Grzeskowiak, Marjorie and Mazingue, Gautier Single-fed circularly polarized dielectric resonator antenna using a uniaxial anisotropic material. (2019) In: IET Antennas and Propagation Conference 2019, 11 November 2019 - 12 November 2019 (Birmingham, United Kingdom).

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Official URL: https://doi.org/10.1049/cp.2019.0713

Abstract

A Dielectric Resonator Antenna operating in circular polarization is presented. The proposed antenna is formed by a uniaxial anisotropic dielectric and a ground plane. The optimization of the permittivity tensor and antenna dimensions is performed both theoretically and numerically using an Eigen mode analysis in Ansys HFSS. A good agreement is obtained for the resonant frequencies and quality factors of the different modes. The uniaxial anisotropic DRA radiates two degenerate orthogonal modes, TE111x and TE111y, with equal amplitudes and 90° phase difference in order to achieve circular polarization. An impedance bandwidth of 9.8% is accomplished and a broadside radiation pattern with left-hand circular polarization (LHCP) is achieved in simulation. Furthermore, an Axial Ratio (AR) of 0.06 dB at 2.45 GHz and a 3-dB AR bandwidth of 2.04% are obtained. The maximum simulated directivity is equal to 6.56 dBi.

Item Type:Conference or Workshop Item (Paper)
Additional Information:ISBN: 978-1-83953-170-5
HAL Id:hal-02882413
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Université de Toulouse > Ecole Nationale de l'Aviation Civile - ENAC (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Other partners > Anywaves (FRANCE)
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Deposited On:03 Feb 2020 11:58

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