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Behavioural Modelling for Adaptive Array Systems Incorporating High-Power Amplifier Nonlinearities

Goss, Tristan JD and Aaen, Peter (2018) Behavioural Modelling for Adaptive Array Systems Incorporating High-Power Amplifier Nonlinearities In: EuCAP 2018 - The 12th European Conference on Antennas and Propagation, 09-13 Apr 2018, London, UK.

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Abstract

We develop a novel method for the behavioural modelling of adaptive array systems (AASs) incorporating high- power amplifier (HPA) nonlinearities. The model is motivated by the need to better define the spatial and spectral interference profile of AASs. We provide a simulated proof of concept as a precursor to experimental validation. In our demonstration, the model is identified using simulated near-field measurements made while the antenna’s input channels are simultaneously undergoing a representative excitation. These measurements are used to identify a large number of memory polynomials (MPs) which characterise the transfer function from the antenna inputs to the near-field. We then use the array of MPs and a near-field to far- field transformation to obtain the far-field pattern of the antenna for arbitrary input. We show the impact of antenna element HPA nonlinearities on the far-field pattern, and our ability to predict them via the developed model.

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
NameEmailORCID
Goss, Tristan JD
Aaen, Peterp.aaen@surrey.ac.uk
Date : 13 April 2018
Funders : Engineering and Physical Sciences Research Council (EPSRC)
Copyright Disclaimer : © Crown copyright 2018, Dstl. This material is licensed under the terms of the Open Government Licence except where otherwise stated. To view this licence, visit http://www.nationalarchives.gov.uk/doc/opengovernment- licence/version/3 or write to the Information Policy Team, The National Archives, Kew, London TW9 4DU, or email: psi@nationalarchives.gsi.gov.uk.
Uncontrolled Keywords : Adaptive antenna; Smart antenna; Behavioural model
Related URLs :
Depositing User : Clive Harris
Date Deposited : 09 Jan 2018 10:28
Last Modified : 14 Apr 2018 02:08
URI: http://epubs.surrey.ac.uk/id/eprint/845565

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