Journal ArticleDOI
A 950-MHz rectifier circuit for sensor network tags with 10-m distance
TLDR
In this article, the authors presented a 950-MHz wireless power transmission system and a high-sensitivity rectifier circuit for ubiquitous sensor network tags, which offers a battery-life-free sensor tag by recharging the output power of a base station into a secondary battery implemented with the tag.Abstract:
This paper presents a 950-MHz wireless power transmission system and a high-sensitivity rectifier circuit for ubiquitous sensor network tags. The wireless power transmission offers a battery-life-free sensor tag by recharging the output power of a base station into a secondary battery implemented with the tag. For realizing the system, a high-sensitivity rectifier with dynamic gate-drain biasing has been developed in a 0.3-/spl mu/m CMOS process. The measurement results show that the proposed rectifier can recharge a 1.2-V secondary battery over -14-dBm input RF power at a power conversion efficiency of 1.2%. In the proposed wireless system, this sensitivity corresponds to 10-m distance communication at 4-W output power from a base station.read more
Citations
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Journal ArticleDOI
Efficient Far-Field Radio Frequency Energy Harvesting for Passively Powered Sensor Networks
TL;DR: An RF-DC power conversion system is designed to efficiently convert far-field RF energy to DC voltages at very low received power and voltages and is ideal for use in passively powered sensor networks.
Journal ArticleDOI
Harvesting Wireless Power: Survey of Energy-Harvester Conversion Efficiency in Far-Field, Wireless Power Transfer Systems
TL;DR: The idea of wireless power transfer (WPT) has been around since the inception of electricity and Nikola Tesla described the freedom to transfer energy between two points without the need for a physical connection to a power source as an?all-surpassing importance to man? as discussed by the authors.
Journal ArticleDOI
Micropower energy harvesting
TL;DR: In this article, the authors summarized recent energy harvesting results and their power management circuits and showed that rectification and DC-DC conversion are becoming able to efficiently convert the power from these energy harvesters.
Proceedings Article
Micropower energy harvesting
TL;DR: This paper summarizes recent energy harvesting results and their power management circuits.
Journal ArticleDOI
High-Efficiency Differential-Drive CMOS Rectifier for UHF RFIDs
TL;DR: Experimental results show the existence of an optimum transistor size in accordance with the output loading conditions and the peak PCE increases with a decrease in operation frequency and with an increase in output load resistance.
References
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Journal ArticleDOI
Fully integrated passive UHF RFID transponder IC with 16.7-/spl mu/W minimum RF input power
U. Karthaus,M. Fischer +1 more
TL;DR: A novel fully integrated passive transponder IC with 4.5- or 9.25-m reading distance at 500-mW ERP or 4-W EIRP base-station transmit power, operating in the 868/915-MHz ISM band with an antenna gain less than -0.5 dB.
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Research on solar power satellites and microwave power transmission in Japan
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Fully integrated passive UHF RFID transponder IC with 16.7-/spl mu/W minimum RF input power
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