A matched RF charger for wireless RF power harvesting system

A matched RF charger for wireless RF power harvesting system

ABSTRACT In this article, special type of RF Charger is proposed for Wireless RF power harvesting system. RF charger is consisted of impedance matching circuit, full bridge CMOS rectifier, active diode, hysteresis switch, and DC–DC booster. The proposed RF charger is to obtain maximum available RF p...

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Veröffentlicht in:Microwave and optical technology letters 2015-07, Vol.57 (7), p.1622-1625
Hauptverfasser: Lee, Ji-Hoon, Jung, Won-Jae, Jung, Jin-Woo, Jang, Jong-Eun, Park, Jun-Seok
Format: Artikel
Sprache:eng
Schlagworte:
Charging
Circuits
DC-DC booster
Electric batteries
Electric potential
Electronic devices
energy harvesting
Harvesting
Impedance matching
Microwaves
rectifier
RF charger
wide-band
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Zusammenfassung:ABSTRACT In this article, special type of RF Charger is proposed for Wireless RF power harvesting system. RF charger is consisted of impedance matching circuit, full bridge CMOS rectifier, active diode, hysteresis switch, and DC–DC booster. The proposed RF charger is to obtain maximum available RF power through adjusting impedance matching circuitries. The proposed RF charger is matched to Korean WCDMA frequency band from 1960 to 1980 MHz. The minimum input RF power for charging 5 V battery is −10 dBm. The RF to DC conversion efficiency of the RF charger is 81% at 30 mA load current with 5 V battery, and the maximum output voltage is 5.5 V. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:1622–1625, 2015
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.29183