A simplex optimization technique for real-time, reconfigurable transmitter power amplifiers

The increased practice of dynamic spectrum allocation requires radar and communication systems that are able to change operating frequency and other performance criteria while maintaining performance metrics such as power efficiency and spectral compliance. This paper presents a simplex algorithm designed to allow frequency-agile circuits to quickly tune for maximum power-added efficiency. Simulation and measurement algorithm tests show that the algorithm produces consistent results from multiple starting points, and that the results show good agreement with traditional load-pull. This algorithm is expected to be useful in providing fast reconfiguration of transmitter power amplifiers.