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A Multiple Time-Scale Power Amplifier Behavioral Model for Linearity and Efficiency Calculations

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4 Author(s)
Pedro, J.C. ; DETI, Univ. de Aveiro, Aveiro, Portugal ; Cabral, P.M. ; Cunha, T.R. ; Lavrador, P.M.

This work describes a new power amplifier, PA, behavioral model intended to predict both the PA amplitude and phase input-output signal relationship and the average or instantaneous dc power consumption and thus average or instantaneous signal-dependent efficiency. Hence, contrary to other previously published PA behavioral models, such a model is not only capable of describing the complex low-pass equivalent fundamental zone output, but also the real low-pass current consumption output. In addition, a special attention is paid to accurately account for the multiple time-scale dynamics shown by modern GaN HEMT based high power amplifiers.

Published in:

Microwave Theory and Techniques, IEEE Transactions on  (Volume:61 ,  Issue: 1 )