A Schering Bridge Circuit forA Varactor BasedSensor Application
Andrij Fitzsimmons, Benjamin T. Fortener · 2008
Thepurpose ofthisresearch wastoproduce a varactor allows forittobeusedasanintegrated passive concept forawireless capacitive sensor application using a component inanysystem. Earlyexperimentation withthis ferroelectric thin film based varactor. Thevaractor isbased on device involved designing avaractor shunt switch shownin thenonlinear tunability ofBaO.6SrO4TiO3 (BST).A ScheringFigure 1.Theswitch wasdesigned using theferroelectric bridge circuit isutilized forthis study, foroptimizing theoutputvaractor withcoplanar waveguide transmission lines on a response. highresistivity silicon substrate. Testing resulted inavery highswitching speed(approximately 43ns)anda high