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

Benedikt, Johannes, Gaddi, R., Tasker, Paul J. 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: 04 Jun 2017 05:05
URI: http://orca-mwe.cf.ac.uk/id/eprint/48246

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