Circuits, systems, and methods for managing automatic gain control in quadrature signal paths of a receiver

A receiver comprising:

• an analog receiver path configured to receive a Radio Frequency (RF) signal and to amplify components of the RF signal;
• a digital receiver path configured to process the amplified components of the RF signal to obtain a processed signal;
• a scaler including a digital gain element configured to modify the processed signal to obtain a modified processed signal and to provide the modified processed signal to a baseband system;
• and
• an automatic gain control circuit including an analog control branch, a digital control branch, and a switching element, the analog control branch including a first feedback adder and a lookup table, the analog control branch configured to access a gain value and a first calibration value, the analog control branch configured to generate an analog control signal, the digital control branch including a programmable delay element and a second feedback adder, the programmable delay element configured to create a delayed analog control signal from the analog control signal, the second feedback adder configured to calculate a digital control signal based on the gain value, the delayed analog control signal, and a second calibration value, and the switching element configured to controllably provide the gain value to the analog control branch and the digital control branch.