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Power Handling Capability of Ferroelectric Film Varactors and Tunable Microwave Devices
Power handling capability of tunable microwave devices employing ferroelectric BaxSr1-xTiO3 film-based varactors: was experimentally measured and analyzed. A microstrip resonator, excited by eitherExpand
Effect of the thermal expansion matching on the dielectric tunability of (100)-one-axis-oriented (Ba0.5Sr0.5)TiO3 thin films
The impact of the residual strain induced by the thermal strain on the dielectric tunability was systematically studied for rf sputtered (100)-one-axis-oriented polycrystalline (Ba0.5Sr0.5)TiO3Expand
Microwave Properties of Parallel Plate Capacitors based on (Ba,Sr)TiO3 Thin Films Grown on SiO2/Al2O3 Substrates
Ba0.7Sr0.3TiO3 (BST) single and quadruple layer capacitors with Pt electrodes were fabricated together on polycrystalline alumina substrates with a SiO2-based multicomponent amorphous buffer layerExpand
Effect of bottom electrode on dielectric property of sputtered-(Ba,Sr)TiO3 films
(Ba0.5Sr0.5)TiO3 (BST) films were deposited on (111)Pt/TiO2/SiO2/Al2O3 substrates by rf sputtering. By inserting a thin layer of SrRuO3 in between BST film and (111)Pt electrode, the BST films grewExpand
DC-Switchable and Tunable Piezoelectricity in RF Thin-Film BST Capacitors
Ferroelectric materials such as (Bax Sr1-x) TiO3 (BST) exhibit a non-zero piezoelectric coefficient under a DC field. The piezoelectric coefficient increases from 0 as the applied DC bias increasesExpand
Oxidized Titanium as a Bottom Electrode Adhesion Layer for the Multilayer (Ba,Sr)TiO 3 Capacitors
Titania (TiO 2 ) ultra thin films have been known as an adhesion layer for platinum on SiO 2 /Si interfaces. Control of porosity, roughness and mechanical strength of sputtered TiO x films isExpand
Nonlinear Response of BaxSr 1-xTiO 3 Planar and Parallel-Plate Capacitors to Microwave Power : Comparative Study of Power Handling Capability
The power handling capability of tunable microwave devices employing planar and parallel-plate BaxSr1-xTiO3 film-based capacitors was experimentally measured and analyzed. A microstrip resonator,Expand
AN EFFECTIVE PASSIVATION FILM STACK FOR THIN FILM BST CAPACITORS
ABSTRACT Thin film voltage tunable ferroelectric capacitors on various substrates are promising for use in high power microwave and other RF systems. Benefits of ferroelectric capacitors includeExpand
Nonlinear response of Ba/sub x/Sr/sub 1 - x/TiO/sub 3/ planar and parallel-plate capacitors to microwave power: comparative study of power handling capability
The power handling capability of tunable microwave devices employing planar and parallel-plate Ba/sub x/Sri/sub 1- x/TiO/sub 3/ film-based capacitors was experimentally measured and analyzed. AExpand
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