title: Tunable ferroelectric capacitor-based voltage-controlled oscillator.
abstract: Ferroelectric capacitors made from Ba(1-0.5)Sr0.5TiO3 (BST) are applied as varactors in tunable, high-frequency circuit applications. In this context, a voltage-controlled oscillator (VCO) has been designed and implemented using discrete RF bipolar junction transistor (BJTs) and tunable ferroelectric capacitor. The designed VCO has a tuning range from 205 MHz to 216.3 MHz with a power dissipation of 5.1 mW. The measured phase noise is -90 dBc/Hz at 100 kHz and -140 dBc/Hz at 1 MHz offset.
authors.affiliation: University of Colorado, Colorado Springs 80918, USA. ee.jamil@gmail.com
authors.forename: Asad
authors.initials: A
authors.lastname: Jamil
authors.forename: Thottam S
authors.initials: TS
authors.lastname: Kalkur
authors.forename: Nicholas
authors.initials: N
authors.lastname: Cramer
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D025802:Electric Capacitance; D004574:Electromagnetic Fields; D004581:Electronics; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008280:Magnetics; D008962:Models, Theoretical; D009991:Oscillometry / Q000295:instrumentation*