Design of Class-C LC Voltage-Controlled Oscillator With Automatic Amplitude Control
For RF VCO design robustness issues due to process,voltage and temperature variations,a class-C LC volt-age-controlled oscillator with automatic amplitude control is proposed in this paper.The simulation results show that the proposed circuit ensure that the peak-to-peak amplitude can be stably greater than any set level during PVT variation,and when the peak-to-peak amplitude is greater than 600 mV,the minimum FoM of class-C LC voltage-controlled oscillator at 100 kHz offset of operating frequency is 182 dBc/Hz.