Wireless Power Transfer via Radiowaves

Recent advances in Wireless Power Transmission (WPT) technologies have enabled various engineering applications with potential product implementation. WPT can be utilized to charge batteries in various pieces of equipment without the need for a wired connection. Energy can be harvested from ambient RF and microwave radiation and 1 million kW microwaves can be transmitted from space to the ground.
This book covers all the theory and technologies of WPT, such as microwave generators with semi-conductors and microwave tubes, antennas, phased arrays, beam efficiency, and rectifiers (rectenna). The authors also discuss coupling WPT. Applications, such as energy harvesting, sensor networks, point-to-point WPT, WPT to moving targets (airplane, vehicle, etc.) and Solar Power Satellite are also presented.

Naoki Shinohara is Professor at the Research Institute for Sustainable Humanosphere (RISH) at Kyoto University in Japan. His research interests include wireless power transfer, microwave power transfer, and solar power satellites.

1. Introduction

2. History, Present and Future of WPT

3. Theory

3.1 Beam Efficiency

3.2 Beam Forming

3.3 Beam Receiving

4. Technologies

4.1 RF Generation – HPA with Semiconductors

4.2 RF Generation – Microwave Tubes

4.3 Antennas and Phased Array

4.4 Rectenna – Rectifying Antenna –

4.5 Power Management

5. Applications

5.1 Energy Harvesting

5.2 Sensor Network

5.3 2D WPT and Wireless Information

5.4 Ubiquitous Power Source

5.5 Microwave Building

5.6 Point-to-Point WPT

5.7 WPT to Moving/Flying Target

5.8 Wireless Charging for Electric Vehicle

5.9 Solar Power Satellite

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