Wideband VCO from Herley - General Microwave - "For optimum performance, the active element used is a silicon bipolar transistor. (This is in lieu of GaAs FETs which typically exhibit 10-20 dB poorer phase noise performance)" Archived 8 March 2012 at the Wayback Machine
Wideband VCO from Herley - General Microwave - "For optimum performance, the active element used is a silicon bipolar transistor. (This is in lieu of GaAs FETs which typically exhibit 10-20 dB poorer phase noise performance)" Archived 8 March 2012 at the Wayback Machine