Recent Wireless Power Transfer Technologies最新文献

Voltage-Doubler RF-to-DC Rectifiers for Ambient RF Energy Harvesting and Wireless Power Transfer Systems 用于环境射频能量收集和无线电力传输系统的倍压射频-直流整流器

Recent Wireless Power Transfer Technologies Pub Date : 2019-11-05 DOI: 10.5772/intechopen.89271

Abdul Quddious, M. Antoniades, P. Vryonides, S. Nikolaou

{"title":"Voltage-Doubler RF-to-DC Rectifiers for Ambient RF Energy Harvesting and Wireless Power Transfer Systems","authors":"Abdul Quddious, M. Antoniades, P. Vryonides, S. Nikolaou","doi":"10.5772/intechopen.89271","DOIUrl":"https://doi.org/10.5772/intechopen.89271","url":null,"abstract":"Wireless Power Transfer (WPT) is promoted as a key enabling technology (KET) for the widespread use of batteryless Internet of Things (IoT) devices and for 5G wireless networks. RF-to-DC rectifiers are essential components for the exploitation of either ambient RF power or wireless transmitted power from a dedicated source. There are several alternative rectifier topologies which can be selected depending on the desired wireless charging scenario and may include one or more diodes. For full rectification, a minimum of two diodes are needed. The current chapter discusses various implementations of voltage-doubler designs, which revolve around the basic topology of two diodes and two capacitors. Schottky diodes are usually used, in combination with lumped capacitors. Off-the-shelf diodes include both separate diodes and integrated voltage-doubler topologies in a single package. Rectifiers are inherently narrowband, non-linear devices, and the RF-to-DC efficiency, which is usually the figure of merit, depends non-linearly on both the termination load and the received RF power. The bandwidth of the rectifier depends on the preceding matching network.","PeriodicalId":152790,"journal":{"name":"Recent Wireless Power Transfer Technologies","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122210481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Rectenna Systems for RF Energy Harvesting and Wireless Power Transfer 射频能量收集和无线能量传输的整流天线系统

Recent Wireless Power Transfer Technologies Pub Date : 2019-10-29 DOI: 10.5772/intechopen.89674

M. Aboualalaa, H. Elsadek

{"title":"Rectenna Systems for RF Energy Harvesting and Wireless Power Transfer","authors":"M. Aboualalaa, H. Elsadek","doi":"10.5772/intechopen.89674","DOIUrl":"https://doi.org/10.5772/intechopen.89674","url":null,"abstract":"With the rapid development of the wireless systems and demands of low-power integrated electronic circuits, various research trends have tended to study the feasibility of powering these circuits by harvesting free energy from ambient electromagnetic space or by using dedicated RF source. Wireless power transmission (WPT) technology was first pursued by Tesla over a century ago. However, it faced several challenges for deployment in real applications. Recently, energy harvesting and WPT technologies have received much attention as a clean and renewable power source. Rectenna (rectifying antenna) system can be used for remotely charging batteries in several sensor networks at internet of things (IoT) applications as commonly used in smart buildings, implanted medical devices and automotive applications. Rectenna, which is used to convert from RF energy to usable DC electrical energy, is mainly a combination between a receiving antenna and a rectifier circuit. This chapter will present several designs for single and multiband rectennas with different characteristics for energy harvesting applications. Single and multiband antennas as well as rectifier circuits with matching networks are introduced for complete successful rectenna circuit models. At the end of the chapter, a dual-band rectenna example is introduced with a detailed description for each section of the rectenna.","PeriodicalId":152790,"journal":{"name":"Recent Wireless Power Transfer Technologies","volume":"153 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114498050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Transceiver Design for Wireless Power Transfer for Multiuser MIMO Communication Systems 多用户MIMO通信系统无线电力传输的收发器设计

Recent Wireless Power Transfer Technologies Pub Date : 2019-10-17 DOI: 10.5772/intechopen.89676

Anming Dong, Haixia Zhang

{"title":"Transceiver Design for Wireless Power Transfer for Multiuser MIMO Communication Systems","authors":"Anming Dong, Haixia Zhang","doi":"10.5772/intechopen.89676","DOIUrl":"https://doi.org/10.5772/intechopen.89676","url":null,"abstract":"This chapter describes transceiver design methods for simultaneous wireless power transmission (WPT) and information transmission in two typical multiuser MIMO networks, that is, the MIMO broadcasting channel (BC) and interference channel (IC) networks. The design problems are formulated to minimize the transmit power consumption at the transmitter(s) while satisfying the quality of service (QoS) requirements of both the information decoding (ID) and WPT of all users. The mean-square error (MSE) and the signal-to-interference-noise ratio (SINR) criteria are adopted to characterize the ID performance of the BC network and the IC network, respectively. The designs are cast as nonconvex optimization problems due to the coupling of multiple variables with respect to transmit precoders, ID receivers, and power splitting factors, which are difficult to solve directly. The feasibility conditions of these deign problems are discussed, and effective solving algorithms are developed through alternative optimization (AO) framework and semidefinite programming relaxation (SDR) techniques. Low-complexity algorithms are also developed to alleviate the computation burden in solving the semidefinite programming (SDP) problems. Finally, simulation results validating those proposed algorithms are included.","PeriodicalId":152790,"journal":{"name":"Recent Wireless Power Transfer Technologies","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127477600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Overview on Synthesis Techniques for Near-Field Focused Antennas 近场聚焦天线综合技术综述

Recent Wireless Power Transfer Technologies Pub Date : 2019-10-15 DOI: 10.5772/intechopen.89600

M. Pino, R. G. Ayestarán, P. Nepa, G. Manara

引用次数: 8

Wireless Power Transfer for Miniature Implantable Biomedical Devices 微型植入式生物医学设备的无线电力传输

Recent Wireless Power Transfer Technologies Pub Date : 2019-10-03 DOI: 10.5772/intechopen.89120

Qi Xu, Tianfeng Wang, Shitong Mao, Wenyan Jia, Zhihong Mao, Mingui Sun

{"title":"Wireless Power Transfer for Miniature Implantable Biomedical Devices","authors":"Qi Xu, Tianfeng Wang, Shitong Mao, Wenyan Jia, Zhihong Mao, Mingui Sun","doi":"10.5772/intechopen.89120","DOIUrl":"https://doi.org/10.5772/intechopen.89120","url":null,"abstract":"Miniature implantable electronic devices play increasing roles in modern medi-cine. In order to implement these devices successfully, the wireless power transfer (WPT) technology is often utilized because it provides an alternative to the battery as the energy source; reduces the size of implant substantially; allows the implant to be placed in a restricted space within the body; reduces both medical cost and chances of complications; and eliminates repeated surgeries for battery replacements. In this work, we present our recent studies on WPT for miniature implants. First, a new implantable coil with a double helix winding is developed which adapts to tubularly shaped organs within the human body, such as blood vessels and nerves. This coil can be made in the planar form and then wrapped around the tubular organ, greatly simplifying the surgical procedure for device implantation. Second, in order to support a variety of experiments (e.g., drug evaluation) using a rodent animal model, we present a special WPT transceiver system with a relatively large power transmitter and a miniature implantable power receiver. We present a multi-coil design that allows steady power transfer from the floor of an animal cage to the bodies of a group of free-moving laboratory rodents.","PeriodicalId":152790,"journal":{"name":"Recent Wireless Power Transfer Technologies","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126759495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Solar Rectennas: Analysis and Design 太阳能整流天线:分析与设计

Recent Wireless Power Transfer Technologies Pub Date : 2019-09-20 DOI: 10.5772/intechopen.89216

A. Sabaawi, O. Al-Ani

{"title":"Solar Rectennas: Analysis and Design","authors":"A. Sabaawi, O. Al-Ani","doi":"10.5772/intechopen.89216","DOIUrl":"https://doi.org/10.5772/intechopen.89216","url":null,"abstract":"There is a growing interest in recent years on developing solar cells and increasing their conversion efficiency. This interest was motivated by the demand on producing clean and inexpensive energy, where the current solar cell technology failed to fulfill the market demand due to its low efficiency obtained. Thus, an efficient alternative is highly required to overcome the drawbacks of current photovoltaic technologies. In this chapter, the concept and operation of solar rectennas will be introduced as an efficient energy-harvesting technology and as a better alternative to conventional solar cells. Nanoantennas are used for receiving solar radiation at both visible and infrared regions as AC electromagnetic signals. The received power is then passed to a nanodiode that acts as a rectifier to convert the power from AC to DC form. Nanoarrays are utilized often to increase the captured energy and decrease the number of rectifiers of the entire system. The biggest challenge is how to design an efficient nanoantenna integrated efficiently into a nanodiode in order to maximize the overall efficiency. State-of-the-art designs for nanoantennas and nanodiodes will be highlighted in this chapter mentioning the figure of merits used to compare between one design and another.","PeriodicalId":152790,"journal":{"name":"Recent Wireless Power Transfer Technologies","volume":"298 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124280766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Dual-Band Resonator Designs for Near-Field Wireless Energy Transfer Applications 用于近场无线能量传输应用的双频谐振器设计

Recent Wireless Power Transfer Technologies Pub Date : 2019-09-19 DOI: 10.5772/intechopen.89218

Lai Ly Pon, M. Himdi, S. Rahim, C. Leow

引用次数: 1

Long-Distance Wireless Power Transfer Based on Time Reversal Technique 基于时间反转技术的远距离无线电力传输

Recent Wireless Power Transfer Technologies Pub Date : 2019-09-10 DOI: 10.5772/intechopen.89078

Binjie Hu, Zhi-Wu Lin, Peng Liao

引用次数: 4