scholarly journals RF Energy Harvesting Wireless Communications: RF Environment, Device Hardware and Practical Issues

Sensors ◽  
2019 ◽  
Vol 19 (13) ◽  
pp. 3010 ◽  
Author(s):  
Yu Luo ◽  
Lina Pu ◽  
Guodong Wang ◽  
Yanxiao Zhao
Keyword(s):  
Energy Harvesting ◽  
Healthcare Services ◽  
Wireless Devices ◽  
Wireless Power ◽  
Environment Friendly ◽  
Rf Energy Harvesting ◽  
Smart Healthcare ◽  
Research Activities ◽  
Wide Range ◽  
Rf Energy

Radio frequency (RF) based wireless power transfer provides an attractive solution to extend the lifetime of power-constrained wireless sensor networks. Through harvesting RF energy from surrounding environments or dedicated energy sources, low-power wireless devices can be self-sustaining and environment-friendly. These features make the RF energy harvesting wireless communication (RF-EHWC) technique attractive to a wide range of applications. The objective of this article is to investigate the latest research activities on the practical RF-EHWC design. The distribution of RF energy in the real environment, the hardware design of RF-EHWC devices and the practical issues in the implementation of RF-EHWC networks are discussed. At the end of this article, we introduce several interesting applications that exploit the RF-EHWC technology to provide smart healthcare services for animals, wirelessly charge the wearable devices, and implement 5G-assisted RF-EHWC.

scholarly journals RF Energy Harvesting for Ubiquitous, Zero Power Wireless Sensors

2018 ◽  
Vol 2018 ◽  
pp. 1-16 ◽  
Author(s):  
Warda Saeed ◽  
Nosherwan Shoaib ◽  
Hammad M. Cheema ◽  
Muhammad U. Khan
Keyword(s):  
Energy Harvesting ◽  
Wireless Sensors ◽  
State Of The Art ◽  
Detailed Comparison ◽  
Portable Devices ◽  
Wireless Power ◽  
Environment Friendly ◽  
Rf Energy Harvesting ◽  
Rf Energy ◽  
Rectenna Design

This paper presents a review of wireless power transfer (WPT) followed by a comparison between ambient energy sources and an overview of different components of rectennas that are used for RF energy harvesting. Being less costly and environment friendly, rectennas are used to provide potentially inexhaustible energy for powering up low power sensors and portable devices that are installed in inaccessible areas where frequent battery replacement is difficult, if not impossible. The current challenges in rectenna design and a detailed comparison of state-of-the-art rectennas are also presented.

scholarly journals Novel RF energy harvesting using Rectenna

2021 ◽  
Vol 2070 (1) ◽  
pp. 012112
Author(s):  
Nikhil Purohit ◽  
Imaculate Rosaline
Keyword(s):  
Energy Harvesting ◽  
Power Transmission ◽  
Low Cost ◽  
Wireless Power ◽  
Rf Energy Harvesting ◽  
Low Threshold ◽  
Rf Energy ◽  
Rectenna Design ◽  
Performance Results ◽  
Good Agreement

Abstract In this paper an experimental RF energy harvester using rectifying antenna (rectenna) to harvest ambient energy from cellular device operating at 900 MHz GSM band is proposed. The circuit is a combination of antenna and rectifying circuit using Schottky barrier diode for microwave (RF) to DC conversion. The performance results of the rectenna shows radiation efficiency of around 58.81%, gain of 3.9 dB and directivity of 5.972 dBi. The proposed rectenna design can prove to be a low cost device for wireless power transmission and RF energy harvesting. The prototype is fabricated with simulated and measured results in good agreement, having a return loss of 21 dB at frequency of around 885 MHz. The overall efficiency is enhanced by using ISS351-TB-E Schottky diode which is categorized by a low junction capacitance and a low threshold voltage to achieve higher conversion efficiency.

Efficient Quad-band RF Energy Harvesting Rectifier for Wireless Power Communications

2021 ◽  
pp. 153927
Author(s):  
Surajo Muhammad ◽  
Jun Jiat Tiang ◽  
Sew Kin Wong ◽  
Amor Smida ◽  
Mohamed I. Waly ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Wireless Power ◽  
Rf Energy Harvesting ◽  
Rf Energy

scholarly journals An Efficient RF Energy Harvesting System for low power applications

2019 ◽  
Vol 9 (2) ◽  
pp. 3510-3513
Keyword(s):  
Energy Harvesting ◽  
Radio Frequency ◽  
Electromagnetic Energy ◽  
Radio Waves ◽  
Rf Energy Harvesting ◽  
Space Forms ◽  
Wide Range ◽  
Wireless Medium ◽  
Energy Harvesting System ◽  
Rf Energy

Next generations energy sources of Radio frequency [3MHz-300GHz] are the (QoS).The QoS is going to presents a on the progress of RF energy harvesting techniques. RF based wireless charging methodology are presenting the key to overcome the current issues in harvesting system Radio wave creates the radio frequency (RF) which is one of the sources of energy. The combination of electric and magnetic fields moving together in space forms the electromagnetic energy. The region in which these waves are found is called an electromagnetic field. In this modern electronic era radio waves can be used for many applications in according to the user requirements. Electromagnetic energy can travel through wireless medium so it can be used in a wide range of wireless applications.

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