NDLI: Adjustable Load With Tracking Loop to Improve RF Rectifier Efficiency Under Variable RF Input Power Conditions

Content Provider	IEEE Xplore Digital Library
Author	Dehghani, S. Abbasian, S. Johnson, T.
Copyright Year	1963
Abstract	Terminating an RF rectifier with an optimum load resistance is important to maximize the efficiency of converting RF power to dc power. The optimum load resistance can also vary significantly as a function of RF input power. Therefore, an adjustable load circuit that tracks changes in RF power is required to maximize efficiency. As a way of implementing an adjustable load circuit that can provide a regulated output voltage to power a host system, a two-stage power-conversion circuit is proposed. The first stage is a dc-to-dc discontinuous mode converter that is controlled by an input loop to regulate the load impedance presented to the RF rectifier. The analysis, design, and experimental results of the first stage adjustable load circuit with a tracking loop are described. The load is connected to a 985-MHz 10-W GaN Class-F RF rectifier and results with the load circuit are compared to the optimum load.
Sponsorship	IEEE Microwave Theory and Techniques Society
Starting Page	343
Ending Page	352
Page Count	10
File Size	1882862
File Format	PDF
ISSN	00189480
Volume Number	64
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2016-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radio frequency Resistance Electrical resistance measurement Power measurement Impedance Gallium nitride Inductors wireless power Class-F synchronous rectifier RF rectifiers
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering Radiation

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