Cardiff behavioural model analysis using a two-tone stimulus

Al-Rawachy, Azam, Husseini, Thoalfukar, Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 and Bell, James ORCID: https://orcid.org/0000-0001-8371-9851 2019. Cardiff behavioural model analysis using a two-tone stimulus. Presented at: 2019 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR), Orlando, FL, USA, 20-23 January 2019. 2019 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR). IEEE, pp. 5-8. 10.1109/PAWR.2019.8708726

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Abstract

This paper presents a new technique for identifying the mixing structure, model coefficients and therefore model order of the Cardiff behavioral model for phase related nonlinearities. The technique employs a two-tone measurements approach and the Fast Fourier Transform (FFT) to be able to observe the mixing structure above the noise floor of the measurement system. Spectral tone visibility explicitly requires model coefficient inclusion for accurate (NMSE <; -40dB) data fitting, which is verified by comparing model fitting of full and truncated model formulations. The identified maximum phase model order from two-tone measurements, for annuli on the Smith Chart, is shown to be accurate for Continuous Wave (CW) measurements.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Published Online
Status:	Published
Schools:	Engineering
Publisher:	IEEE
ISBN:	9781538659489
Date of First Compliant Deposit:	12 June 2019
Date of Acceptance:	9 May 2019
Last Modified:	13 Dec 2022 15:47
URI:	https://orca.cardiff.ac.uk/id/eprint/123121

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