Global behavioural model generation using coefficients interpolation

Husseini, Thoalfukar, Al-Rawachy, Azam, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Bell, James ORCID: https://orcid.org/0000-0002-4815-2199 and Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 2019. Global behavioural model generation using coefficients interpolation. Presented at: 2019 IEEE MTT-S International Microwave Symposium, IMS 2019, Boston, MA, USA, 2-7 June 2019. 2019 IEEE MTT-S International Microwave Symposium (IMS). IEEE, pp. 200-203. 10.1109/MWSYM.2019.8700998

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Abstract

This paper demonstrates a novel approach to reduce the density of load-pull measurements that are required to populate a high-density Cardiff behavioural model coefficient look-up table, versus input drive signal, covering a large dynamic range. The presented approach investigates the use of coefficient interpolation to achieve this objective using a recently published re-formulation of the Cardiff behavioural model. This approach provides global interpolation functions for the model coefficients with respect to input drive level (|a11|). It is shown that this approach can provide for accurate interpolation of load-pull behaviour over a 2-4 dB power range. This knowledge can be used to reduce the number of measurements necessary, hence the time duration required, to populate the Cardiff behavioural model look-up table, without compromising accuracy when used in CAD simulations. The techniques are demonstrated on a 10W packaged Cree HFET.

Item Type:	Conference or Workshop Item - published (Paper)
Date Type:	Published Online
Status:	Published
Schools:	Schools > Engineering
Publisher:	IEEE
ISBN:	978-1-7281-1310-4
ISSN:	0149-645X
Last Modified:	12 May 2026 13:55
URI:	https://orca.cardiff.ac.uk/id/eprint/124900

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