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Sensitivity of AM/AM linearizer to AM/PM distortion in devices

Ogboi, Friday Lawrence, Tasker, Paul J., Mohkti, Z., Lees, Jonathan, Benedikt, Johannes, Bensmida, S., Morris, K., Beach, M. and McGeehan, J. 2014. Sensitivity of AM/AM linearizer to AM/PM distortion in devices. Presented at: 83rd ARFTG Microwave Measurement Conference 2014, Tampa, FL, USA, 6 June 2014. ARFTG Microwave Measurement Conference (ARFTG), 2014 83rd. IEEE, pp. 1-4. 10.1109/ARFTG.2014.6899507

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Abstract

Baseband injection is a technique that can provide a cost-effective linearizing solution that can be combined with supply modulation techniques such as envelope tracking (ET), to minimize AM/AM distortion and potentially simplify the DSP linearization requirement and associated cost. Recently [8], a new approach for computing the baseband injection stimulus, formulated in the envelope domain, was introduced. The concept was originally demonstrated using a 10W Cree GaN-on-SiC HFET device. In this work its robustness with respect to alternative device technology is investigated using 25W Nitronex NPTB00025 GaN-on-SiC HEMT depletion-mode and a 10W, high-voltage LD-MOS, enhancement-mode devices. Its effectiveness in dealing with AM/AM distortion is confirmed.

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Publisher: IEEE
Last Modified: 04 Jun 2017 07:51
URI: http://orca-mwe.cf.ac.uk/id/eprint/68808

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