Miniaturized and reconfigurable notch antenna based on a BST ferroelectric thin film
Résumé
This work deals with the design, realization and characterization of a miniature and frequency agileantenna based on a ferroelectric Ba0,80Sr0,20TiO3 thinfilm. The notch antenna is loaded with a variablemetal/insulator/metal (MIM) capacitor and is achieved by a monolithic method. The MIM capacitance is3.7 pF, which results in a resonant frequency of 670 MHz compared to 2.25 GHz for the unloadedsimulated antenna; the resulting miniaturization rate is 70%. The characterization of the antennaprototype shows a frequency tunable rate of 14.5% under an electricfield of 375 kV/cm, with a tunabilityperformance h = 0.04.
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