Pratik Mevada, A. Sharma, S. Kulshrestha, Soumyabrata Chakrabarty, R. Jyoti
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Frequency Agile Monolithic Inset Fed Microstrip Patch Antenna Based on Barium Strontium Titanate (BaxSr1-xTiO3) Ferroelectric Substrate
This paper demonstrates frequency agile inset fed microstrip patch antenna built on Barium Strontium Titanate (BST: BaxSriXTiO3) ferroelectric substrate. Concept and design methodology of X-band frequency agile microstrip patch antenna monolithically integrated with coplanar capacitor, bias tee and DC block capacitor are discussed. Antenna design is carried out on 0.5 m thick Ba0.6Sr0.4TiO3 hosted by 1mm Quartz substrate. C-V characterization of this BST film is also performed and presented. Microstrip antenna on BST film has been realized using SolGel method and it shows 50MHz frequency tunability during measurement for bias voltage variation from OV to 154V The gain and pattern purity of the antenna is maintained over this bandwidth.
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