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, USA, 2 -7 June 2019. -.

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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 (ja11j). 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 (Paper)
Status:	Published
Schools:	Engineering
Last Modified:	25 Nov 2022 11:03
URI:	https://orca.cardiff.ac.uk/id/eprint/124900

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