Presentation on RF Predistortion of Power Amplifiers - Agilent ...

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Coefficient values for RF Predistorter Coefficient Coefficient value value 3rd 3rd Order Order Im{α} Im{α} 3rd 3rd Order Order Re{α} Re{α} Time Time (us) (us) Adaptive RF Predistorter Using Rectangular Coordinate Work Function 13 Notice in this adaptation example that the real third-order coefficient is adapted first, followed by the imaginary third-order coefficient. The coefficients adapt slowly—a dwell time of 450 microseconds is used to obtain a stable output power measurement. Instability can occur if proper attention is not paid to the adaptation procedure. The fifthorder coefficients are adapted using the same approach.
Third-Order IM Distortion Performance dBc dBc (10dB/Div) (10dB/Div) 13 13 dB dB Improvement Improvement (3rd) (3rd) Time Time (µs) (µs) Adaptive RF Predistorter Using Rectangular Coordinate Work Function 14 This plot demonstrates the improvement in third-order intermodulation levels at the output of the RF predistorter.
Page 1 and 2: Agilent EEsof EDA This document is
Page 3 and 4: Abstract With the advent of linear
Page 5 and 6: Technology Overview Linearization a
Page 7 and 8: Spectrum at the Nodes RF input Dela
Page 9 and 10: Rectangular Work Function Predistor
Page 11 and 12: ADS RF Predistortion Simulation Sim
Page 13: Power Amplifier used in RF Predisto
Page 17 and 18: Summary RF Based Predistortion ●

Presentation on RF Predistortion of Power Amplifiers - Agilent ...

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