Switchable Dual Core Power Amplifier

A power amplifier system comprising:

• a first power amplifier chain comprising at least one first power amplifier core configured to generate a first output in response to an envelope tracking mode of operation;
• and
• a second power amplifier chain comprising at least one second power amplifier core configured to generate a second output in response to a non-envelope tracking mode of operation,
• wherein the first power amplifier chain and the second power amplifier chain are configured to selectively operate in the envelope tracking mode and the non-envelope tracking mode respectively based on a set of predetermined criteria.

A method for a power amplifier system comprising:

• receiving a set of input signals at an input terminal of the power amplifier system;
• determining a set of predetermined criteria related to the set of input signals at the input terminal;
• and
• selecting from an envelope tracking mode to generate an output power via a first power amplifier and a non-envelope tracking mode to generate the output power via a second power amplifier based on the set of predetermined criteria.