RF Power Amplifier DPD Calibration With Pulsed Amplitude Steps

The patent applies periodic action by using pulsed calibration signals with alternating active and idle periods. The calibration is performed in periodic bursts rather than continuous operation, where pulses are transmitted at specific intervals with silence gaps between them. This reduces the overall calibration time while maintaining accuracy by concentrating measurement activities into periodic windows.

The calibration process is segmented into discrete amplitude steps rather than continuous calibration. The signal amplitude is divided into multiple levels (e.g., 0 dBm, 10 dBm, 20 dBm, 30 dBm) with silence gaps between each step. This segmentation allows the system to perform calibration in manageable discrete stages, reducing total calibration time while maintaining PA linearity through systematic measurement at each amplitude level.

The patent reduces power consumption by using periodic pulsed calibration instead of continuous calibration. The RF power amplifier and receiver are activated only during brief pulse transmission windows and remain in low-power states during silence gaps. This periodic operation maintains necessary calibration accuracy while dramatically reducing average power consumption in battery-operated devices.

The patent applies partial action by performing calibration at selected amplitude levels rather than continuously across the full power range. Instead of calibrating at every possible power level, the system performs measurements at representative discrete levels (e.g., 0, 10, 20, 30 dBm), which is sufficient to characterize PA nonlinearity while consuming significantly less power than exhaustive calibration would require.