Voltage‐Controlled Oscillator

This chapter discusses oscillator basics including oscillation condition, quality factor, phase noise, figure‐of‐merit, and so on. The basic principle and circuits of the LC voltage‐controlled oscillator (VCO) are described. The ring VCO is then discussed by focusing on different design aspects in comparison with the LC VCO. In the last section, the relaxation VCO is briefly covered.