Power variation correction for a transmitter

A method comprising:

• receiving, during a preamble of a packet of a transmit radio frequency (RF) signal, in a controller coupled to a detector circuit of a radio frequency (RF) front end circuit comprising a power amplifier, a plurality of measurements each comprising a level of the transmit RF signal with respect to the power amplifier;
• for each of the plurality of measurements, determining an update to an upstream component coupled to the power amplifier based at least in part on the level of the transmit RF signal, and causing the update to the upstream component during a first portion of the preamble;
• and
• after determining the update and causing the update for each of the plurality of measurements, preventing a further update to the upstream component during a remainder of the preamble of the packet.

A wireless device comprising:

• a first integrated circuit comprising a radio frequency (RF) front end module, the RF front end module comprising:
• a transmit path to receive, process and output a transmit RF signal, the transmit path comprising a power amplifier;
• and
• a detector circuit to detect a level of the transmit RF signal;
• and
• a second integrated circuit coupled to the first integrated circuit, the second integrated circuit comprising:
• a host processor;
• baseband circuitry coupled to the host processor to process an output signal, the baseband circuitry comprising a pre-driver to adjust a level of the output signal;
• upconversion circuitry to upconvert the output signal to the transmit RF signal;
• an RF circuit coupled to the upconversion circuitry, the RF circuit to process and output the transmit RF signal to the first integrated circuit;
• a memory coupled to the host processor;
• and
• a controller coupled to the host processor and the memory, the controller comprising an engine, wherein in response to a plurality of timer expirations during a preamble of the transmit RF signal, the engine is to obtain measurement information regarding a level of the transmit RF signal, store the measurement information into the memory, and inform the controller regarding the storage of the measurement information into the memory;
• wherein the controller is to update a level of at least one of the pre-driver or the RF circuit one or more times during the preamble of the transmit RF signal, based at least in part on the measurement information.