System, method and apparatus for supporting multi-mode amplifier for multiple wireless communication protocols

An apparatus comprising:

• a power amplifier to amplify a first radio frequency (RF) signal having a variable modulation envelope in a linear mode of operation, and to amplify a second RF signal having a constant modulation envelope in a non-linear mode of operation, the power amplifier comprising a plurality of slices;
• and
• a controller coupled to the power amplifier to control the power amplifier, wherein the controller is to cause:
• a first plurality of slices of the power amplifier to amplify the second RF signal in the non-linear mode of operation;
• and
• a second plurality of slices of the power amplifier to amplify the first RF signal in the linear mode of operation, wherein the controller is to cause at least some of the first plurality of slices to be re-used in the linear mode of operation.

A system comprising:

• a first pre-driver to amplify a first radio frequency (RF) signal of a first wireless protocol;
• a second pre-driver to amplify a second RF signal of a second wireless protocol;
• a dual-mode power amplifier configurable to amplify the first RF signal according to a linear mode of operation and amplify the second RF signal according to a non-linear mode of operation;
• and
• a switch array coupled between the second pre-driver and the dual-mode power amplifier, wherein the switch array is to decouple the first pre-driver from the dual-mode power amplifier in the non-linear mode of operation.