Systems and methods for adaptive generation of high power electromagnetic radiation and their applications

An amplifying system comprising:

• a radio-frequency (RF) amplifier, the RF amplifier configured to receive an incoming RF signal through an input port and output an outgoing RF signal through an output port, the RF amplifier comprising a field effect transistor (FET) comprising a gate terminal, a drain terminal and a source terminal;
• and
• a power management system configured to:
• provide a first bias voltage at the gate terminal to turn on the RF amplifier in response to receiving an indication that the incoming RF signal is applied to the input port;
• sense a current at the drain terminal while the RF amplifier is turned on;
• adjust the first bias voltage based on the current at the drain terminal to maintain the current at the drain terminal in a threshold range while the RF amplifier is turned on;
• and
• provide a second bias voltage at the gate terminal to turn off the RF amplifier in response to receiving an indication that the incoming RF signal is not applied to the input port.