Positive Feedback Pilot System for Second Loop Control in a Feedforward Power Amplifier


A novel pilot generation and detection system for aligning the second loop of an adaptive feedforward compensated power amplifier (FFPA) is described. A frequency-selective nonlinear positive feedback loop embedded within the FFPA generates a pilot tone and IF detection measures the residual pilot power after the second loop cancellation. The proposed… (More)
DOI: 10.1109/TCSI.2008.923272

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