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Communication Dans Un Congrès Année : 2023

Small and low-profile dielectric resonator antenna using new low loss and high permittivity ceramics

Résumé

Original oxide ceramics, based on strontium and tantalum, are investigated for antenna applications. First, it concerns perovskite ceramics (Sr 2 Ta 2 O 7 ) 100-x (La 2 Ti 2 O 7 ) x , and, secondly, the SrTa 2 O 6 composition, belonging to the tetragonal tungsten bronze (TTB) compounds. Their synthesis is conducted by a solid-state reaction route and results in dense ceramics exhibiting moderate permittivity (∼ 80) and low losses (≤ 5.10 -3 ), that have been integrated in miniature dielectric resonator antenna (DRA) prototypes. Achieved ferroelectric perovskite ceramic based antennas present measured total efficiencies of 79% and 84%, at resonant frequencies ‘F R ’ of 5.80 GHz and 4.85 GHz, respectively, whereas the pure dielectric TTB ceramic DRA achieves an efficiency of 91% at 4.01 GHz.
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Dates et versions

hal-04385100 , version 1 (10-01-2024)

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Ratiba Benzerga, Claire Le Paven, Matthew Julian, Mohamad Haydoura, Laurent Le Gendre, et al.. Small and low-profile dielectric resonator antenna using new low loss and high permittivity ceramics. 2023 IEEE Conference on Antenna Measurements and Applications (CAMA), Nov 2023, Genoa, Italy. ⟨10.1109/cama57522.2023.10352901⟩. ⟨hal-04385100⟩
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