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Envelope-domain time series (ET) behavioral model of a Doherty RF power amplifier for system design

Wood, J, LeFevre, M, Runton, D, Nanan, JC, Noori, BH and Aaen, PH (2006) Envelope-domain time series (ET) behavioral model of a Doherty RF power amplifier for system design IEEE Transactions on Microwave Theory and Techniques, 54 (8). pp. 3163-3171.

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In this paper, we present an envelope-domain behavioral model of a high-power RF amplifier. In this modeling approach, we use the signal envelope information, and the behavioral model is generated using an established nonlinear time-series approach to create a time-domain model that operates in the envelope or signal domain. We have generated a model of a 200-W Doherty amplifier from measured IQ data taken using a wideband code-division multiple-access excitation; the amplifier was driven from the linear regime into saturation. The time-series model was created using a time-delay embedding identified from auto-mutual information analysis, and an artificial neural network was used to fit the multivariate transfer function. The model has been validated using measured and simulated data, and it has been used in the development of a system-level design of a digital pre-distorter. © 2006 IEEE.

Item Type: Article
Authors :
Wood, J
LeFevre, M
Runton, D
Nanan, JC
Noori, BH
Aaen, PH
Date : 1 August 2006
Identification Number : 10.1109/TMTT.2006.879134
Depositing User : Symplectic Elements
Date Deposited : 28 Mar 2017 15:31
Last Modified : 31 Oct 2017 18:28

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