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An RF Power Amplifier Behavioural Model with Low-Complexity Temperature Feedback for Transmitter Arrays

In this work, we report a RF power amplifier behavioural model with temperature effects suitable for predicting the long-term memory effects in standalone and multiple-PA arrays. The model employs iso-thermal pulsed-measurements to estimate the sensitivities of the gain and drain current for a temperature range from 20° to 80° C. For different input power levels, duty cycles and waveform shapes, the model can estimate the PA output power in presence of self-heating and for a wide temperature range. With an error of < 4 %, the model is favourable due to its low complexity and cost effectiveness.