Dynamically configurable bias circuit for controlling gain expansion of multi-mode, single chain linear power amplifiers

A multi-chip module, the multi-chip module comprising:

• a first semiconductor die of a first material, the first semiconductor die including a power amplifier having a plurality of operating modes and a plurality of bias circuits, each bias circuit of the plurality of bias circuits associated with a different operating mode from the plurality of operating modes, and each bias circuit of the plurality of bias circuits including an independently enabled current mirror with a current mirror ratio and a bias current mirror level so as to configure the power amplifier at a particular quiescent current level corresponding to a particular operating mode from the plurality of operating modes;
• and
• a second semiconductor die of a second material, the second semiconductor die configured to selectively apply a voltage to one of the plurality of bias circuits based at least in part on an operating mode selected from the plurality of operating modes while not applying the voltage to one other of the plurality of bias circuits based at least in part on the operating mode selected from the plurality of operating modes.