Low Phase Noise 2 GHz HBT Push-Push VCO Basedudon an Advanced Low Frequency Noise Model

摘要

After investigation of the possible HBT lowudfrequency noise sources and their localization in order toudextract a HBT low frequency noise model, the realisationudand performances of a S band Voltage Controlled Oscillatorud(VCO) is reported. This VCO is fully integrated in MMICudtechnology, and is based on a push-push topology. Theudcircuit is covering 280 MHz tuning range around a centreudfrequency of 2 GHz with a phase noise of –95 dBc/Hz at 10udKHz offset.