Patent ID: 8866549
Filing Date: 2014-10-21
Classification: H03F

Abstract:
1. A method for calibrating a radio frequency device having a non-linear power detector comprising: providing nominal power detector output data including a plurality of nominal power detector outputs and a plurality of nominal power amplifier outputs, where each of the plurality of nominal power detector outputs is associated with one of the plurality of nominal power amplifier outputs; instructing the radio frequency device to generate a plurality of power amplifier output levels; for each of the plurality of power amplifier output levels generated by the radio frequency device, obtaining a power detector output of the non-linear power detector and a power amplifier output of the radio frequency device that corresponds to the power detector output of the non-linear power detector; for each of the plurality of power amplifier output levels generated by the radio frequency device, associating the power detector output of the non-linear power detector to one of the plurality of nominal power detector outputs based upon the power amplifier output of the radio frequency device that corresponds to the power detector output of the non-linear power detector; for each power detector output of the non-linear power detector associated with the one of the plurality of nominal power detector outputs, calculating a measured power detector output error of a plurality of measured power detector output errors based upon a difference between the power detector output and the one of the plurality of nominal power detector outputs associated with the power detector output, wherein each measured power detector output error is associated with one of the plurality of nominal power amplifier outputs; for each of the plurality of nominal power detector outputs that is unassociated with the one of the plurality of measured power detector output errors, calculating a calculated power detector output error of a plurality of calculated power detector output errors based upon the plurality of measured power detector output errors and the plurality of nominal power amplifier outputs associated with the plurality of measured power detector output errors, wherein each calculated power detector output error is associated with one of the plurality of nominal power amplifier outputs; generating a calibrated power detector output data based upon the nominal power detector output data and the plurality of calculated power detector output errors; and storing the calibrated power detector output data in the radio frequency device to calibrate the radio frequency device.