Hybrid digital-analog automatic level control (alc) using vector signal generators (vsg)

A method of automatic level control, the method comprising:

• providing, by an analog circuit of an automatic level controller, a modulated analog output;
• controlling, by a digital circuit of the automatic level controller, the modulated analog output;
• transmitting, by a feedback loop from the analog circuit to the digital circuit, a level of the modulated analog output to the digital circuit;
• and
• driving, by the digital circuit, a digital-to-analog converter interfacing the analog circuit to control the level of the modulated analog output based on an input received from the feedback loop.

An automatic level control circuit comprising:

• an analog portion configured to provide a modulated analog output;
• a digital portion configured to control the modulated analog output;
• and
• a feedback loop from the analog portion to the digital portion and configured to transmit the level of the modulated analog output to the digital portion,
• wherein the digital portion is further configured to drive a digital-to-analog converter interfacing the analog portion to control the level of the modulated analog output based on input received from the feedback loop.