High frequency, temperature-compensated monolithic voltage-controlled oscillator design techniques

This research explores new voltage-controlled oscillator (VCO) architectures and circuit design techniques to optimize VCO performance at frequencies above 100 MHz. Through the use of negative feedback loops around a core VCO and matched linear frequency-to-voltage converters (FVC), the VCO oscillation frequency is stabilized against temperature, power supply and processing variations, while maintaining a linear voltage-to-frequency control characteristic.;To verify the feasibility of the proposed VCO architecture, an emitter-coupled VCO with dual-loop feedback has been designed and fabricated in a 2-;Although the closed-loop architecture was applied to implement the high frequency emitter-coupled oscillator in bipolar technology to demonstrate the validity of theory, it is also of potential interest for other VCO configurations and technologies.