Journal ArticleDOI
Design of Triple Band Differential Rectenna for RF Energy Harvesting
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TLDR
In this article, a triple band differential rectenna for RF energy harvesting applications is proposed, which is designed to operate in frequency bands of universal mobile telecommunication service (2.1 GHz), lower WLAN/Wi-Fi (2, 2.48 GHz), and WiMAX (3.3-3.8 GHz).Abstract:
A triple band differential rectenna for RF energy harvesting applications is proposed in this paper. The rectenna is designed to operate in frequency bands of universal mobile telecommunication service (2.1 GHz), lower WLAN/Wi-Fi (2.4–2.48 GHz), and WiMAX (3.3–3.8 GHz). For designing the proposed rectenna, first a differentially fed multiband slot antenna that works as the front-end receiving unit is designed, fabricated, and tested to check its performance. It is observed that a peak antenna gain of 7, 5.5, and 9.2 dBi is achieved at 2, 2.5, and 3.5 GHz, respectively. In the next step, a triple band differential rectifier is designed using the Villard voltage doubler where interdigital capacitors (IDCs) in lieu of lumped components are used. The full rectifier circuit comprising of the rectifying unit and impedance matching circuit is fabricated and tested to check its performance in the desired bands. The peak RF-dc conversion efficiency of 68% is obtained using the three-tone measurement. In the final stage, both antenna and the rectifier circuit are integrated through SMA connecter in order to implement the proposed rectenna. Measurement of the proposed rectenna shows an approximate maximum efficiency of 53% at 2 GHz, 31% at 2.5 GHz, and 15.56% at 3.5 GHz.read more
Citations
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Journal ArticleDOI
RF energy harvesting systems: An overview and design issues
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Journal ArticleDOI
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Fully printed 3D cube-shaped multiband fractal rectenna for ambient RF energy harvesting
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Journal ArticleDOI
Key Components of Rectenna System: A Comprehensive Survey
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TL;DR: A comprehensive survey on the key components of a rectenna system, including antenna configurations, rectifier configurations, impedance matching networks, and RF filter, is outlined.
References
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Abstract: A theory for combined differential and common-mode normalized power waves is developed in terms of even and odd mode impedances and propagation constants for a microwave coupled line system. These are related to even and odd-mode terminal currents and voltages. Generalized s-parameters of a two-port are developed for waves propagating in several coupled modes. The two-port s-parameters form a 4-by-4 matrix containing differential-mode, common-mode, and cross-mode s-parameters. A special case of the theory allows the use of uncoupled transmission lines to measure the coupled-mode waves. Simulations verify the concept of these mixed-mode s-parameters, and demonstrate conversion from mode to mode for asymmetric microwave structures. >
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
Recycling ambient microwave energy with broad-band rectenna arrays
TL;DR: In this article, a 64-element dual-circularly-polarized spiral rectenna array is designed and characterized over a frequency range of 2-18 GHz with single-tone and multitone incident waves.
Ambient RF Energy-Harvesting Technologies for Self-Sustainable Standalone Wireless Sensor Platforms This paper presents various ambient energy-harvesting technologies and investigates their applicability in the development of self-sustaining wireless platforms.
Sangkil Kim,Rushi Vyas,Jo Bito,Kyriaki Niotaki,Ana Collado,Apostolos Georgiadis,Manos M. Tentzeris +6 more
TL;DR: A benchmarking prototype of an embedded microcontroller-enabled sensor platform has been successfully powered by an ambient ultrahigh-frequency (UHF) digital TV signal where a broadcasting antenna is 6.3 km away from the proposed wireless energy-harvesting device.
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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.