Patent ID: 11870396
Assignee: SHENZHEN GOODIX TECHNOLOGY CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 6:
7. The power amplifier system of claim 1, further comprising:
a calibration subsystem comprising:
a valley detector circuit having a detection input coupled with the signal output of the power amplifier circuit and configured to generate a detection signal as a function of the detection input, such that the detection signal indicates a present output valley level of an amplitude envelope of the signal output of the power amplifier circuit; and
a calibration engine coupled with the valley detector circuit and the lookup table and configured, for each gain setting of the plurality of gain settings, to compute a respective one of the plurality of compensation values based on the present output valley level indicated by the detection signal for the gain setting, and to store the respective one of the plurality of compensation values in the lookup table in association with the gain setting.