Voltage controlled oscillators with ferroelectric capacitors
2008
Tunable high dielectric constant(K) based on barium strontium titanate (Ba 1-x Sr x TiO3,x=0.5) varactor was fabricated by RF magnetron sputtering. The varactors have been characterized and a circuit simulation model has been developed. This capacitor has been used as a tunable element in VCO based on Seiler architecture. The VCO has been characterized for tunability and phase noise characteristics.
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