Behavioural model analysis of active harmonic load-pull measurements

Woodington, Simon Philip 2011. Behavioural model analysis of active harmonic load-pull measurements. PhD Thesis, Cardiff University. Item availability restricted.

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Abstract

In this thesis, an investigation of the use of the poly-harmonic distortion model and related techniques is conducted, and applied to model fundamental and harmonic load-pull. Contained within the thesis is a detailed review of the development of the poly-harmonic distortion model and related methods. This thesis shows that although the poly-harmonic distortion model improves on the prediction of fundamental load-pull, over Hot-S-Parameters it still has a limited range of application. To address this observation, higher order models have been investigated along with Fourier methods allowing rapid extraction of the behavioral models. These methods allow conclusions to be drawn on the accuracy of the extracted models, by the direct observation of the magnitudes of the model coefficients. The thesis is concluded with the presentation of the results from third party, using a model extracted using the methods discussed in this thesis. The Model is of a 0.5W GaAs pHEMT at 9 GHz and is used within the design of a Class-J MMIC amplifier.

Item Type:	Thesis (PhD)
Status:	Unpublished
Schools:	Engineering
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Uncontrolled Keywords:	Behavioural modeling; S-parameters; Load-pull; Power amplifiers; Poly harmonic distortion model.
Date of First Compliant Deposit:	30 March 2016
Last Modified:	19 Mar 2016 22:21
URI:	https://orca.cardiff.ac.uk/id/eprint/13000

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