Proceedings ArticleDOI
Broadband RF energy harvesting system covering CDMA, GSM900, GSM1800, 3G bands with inherent impedance matching
Mahima Arrawatia,Maryam Shojaei Baghini,Girish Kumar +2 more
- pp 1-3
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TLDR
In this article, a planar broadband folded dipole antenna having an input impedance of 300Ω was designed and fabricated, and the measured VSWR is less than 2 from 825MHz to 1.27GHz and 1.67GHz to 2.17GHz.Abstract:
A broadband RF energy harvesting system for harvesting energy from 800 MHz to 2.5 GHz is presented. A passive voltage amplification scheme and inherent matching technique using higher antenna impedance is employed to enhance the output voltage of the rectifier. A planar broadband folded dipole antenna having an input impedance of 300Ω is designed and fabricated. The measured VSWR is less than 2 from 825MHz to 1.27GHz and 1.67GHz to 2.17GHz. A RF energy harvesting system consisting of the high impedance antenna, Schottky diode based rectifier and a self oscillating boost converter is used to charge a 12µAh battery to 3.8V. At 844MHz for a received power of −10.7dBm the battery charges to 3.8V. At 1.73GHz the battery charges to 3.8V for a received power of −5.72dBm. Also using the designed RF energy harvesting system, a voltage of 4.4 V is measured for a load of 3 kΩ at 10 cm from a cell phone making a call.read more
Citations
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Journal ArticleDOI
Microwave antennas—An intrinsic part of RF energy harvesting systems: A contingent study about its design methodologies and state‐of‐art technologies in current scenario
TL;DR: Five different cases of monopole antennas are explored with reflector surfaces such as PEC (perfect electrical conductor) and AMC (artificial magnetic conductor) integrated with the rectifier circuit for better improvisement in RF energy harvesting systems.
Journal ArticleDOI
Broadband Rectenna for Radio Frequency Energy Harvesting Application
TL;DR: In this paper, a double-sided printed monopole antenna for radio frequency (RF) energy harvesting application is presented, where the antenna structure consists of a circular patch with a truncated cone.
Journal ArticleDOI
Tri-Stepped Rectangular Antenna for Efficient RF Energy Harvesting
Mamta Kurvey,Ashwini Kunte +1 more
TL;DR: A simplified monopole antenna, called a tri-stepped rectangular antenna for RF harvesting, is proposed, modified to a step-like structure to achieve impedance matching and maximize the omni-directional gain at all mobile frequencies.
Proceedings ArticleDOI
A battery-less power management circuit for RF energy harvesting with input voltage regulation and synchronous rectification
TL;DR: It is shown that MPPT as a function of effective output resistance of the rectenna can be maintained for a range of input power without changing the emulated resistance at the input of the boost converter.
Journal ArticleDOI
Design, Analysis, and Optimization of Dual Side Printed Multiband Antenna for RF Energy Harvesting Applications
TL;DR: The proposed antenna configuration is designed using a nested triangular patch and defected ground structure that exhibits compact size, better radiation, and reflection characteristics over a multiband frequency ranging from 1 GHz to 6GHz.
References
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Journal ArticleDOI
On-chip high-voltage generation in MNOS integrated circuits using an improved voltage multiplier technique
TL;DR: An improved voltage multiplier technique has been developed for generating +40 V internally in p-channel MNOS integrated circuits to enable them to be operated from standard +5- and -12-V supply rails.
Journal ArticleDOI
Ambient RF Energy Harvesting in Urban and Semi-Urban Environments
TL;DR: In this article, a city-wide RF spectral survey was undertaken from outside all of the 270 London Underground stations at street level, and four harvesters (comprising antenna, impedance-matching network, rectifier, maximum power point tracking interface, and storage element) were designed to cover four frequency bands from the largest RF contributors within the ultrahigh frequency (0.3-3 GHz) part of the frequency spectrum.
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
RF energy harvesting system and circuits for charging of mobile devices
TL;DR: A modified form of existing CMOS based voltage doubler circuit is presented to achieve 160% increase in output power over traditional circuits at 0 dBm input power.
Journal ArticleDOI
Low-Power CMOS Rectifier Design for RFID Applications
TL;DR: The measured RF power-up threshold (in 0.18-mum, at 1 muW load) was 6 muWplusmn10%, closely matching the predicted value of 5.2 muW.