High-power time-domain measurement system with active harmonic load-pull for high-efficiency base-station amplifier design

Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349, Gaddi, R., Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Goss, M. 2000. High-power time-domain measurement system with active harmonic load-pull for high-efficiency base-station amplifier design. IEEE Transactions on Microwave Theory and Techniques 48 (12) , pp. 2617-2624. 10.1109/22.899021

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Abstract

A measurement system combining vector corrected waveform measurements with active harmonic load-pull extends, for the first time, real-time experimental waveform engineering up to the 30-W power level. The vector correction procedure is presented in this paper. A novel harmonic load-pull approach based on the real-time measurement capability of the system is demonstrated on a 4-W LDMOS device. A 20% increase in maximum output power to 4.7 W without degrading gain and efficiency is realized. Waveform analysis at various drive and load conditions directly identifies nonlinear capacitance effects being a key design issue for the design of highly efficient power amplifier.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Uncontrolled Keywords:	calibration; harmonic analysis; microwave measurement; microwave power amplifiers; mobile radio; power MOSFET; waveform analysis
Publisher:	IEEE
ISSN:	0018-9480
Last Modified:	24 Oct 2022 11:28
URI:	https://orca.cardiff.ac.uk/id/eprint/48246

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