Directional Radiation Technique for Maximum Receiving Power in Microwave Power Transmission System

• Published in: IEEE transactions on industrial electronics (1982) Vol. 67; no. 8; pp. 6376 - 6386
• Main Authors: Hui, Qi, Jin, Ke, Zhu, Xirui
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.08.2020; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Algorithms; Apertures; Architecture; Beam capture efficiency (BCE); Computer architecture; Direct reduction; directional radiation (DR); Generators; Microwave power beaming; microwave power transmission (MPT); phase and amplitude control; phased-array antenna; Radio frequency; Receiving antennas; Transmitting antennas
• ISSN: 0278-0046; 1557-9948
• DOI: 10.1109/TIE.2019.2941150

Directional radiation (DR), a distinguishing feature of a microwave power transmission (MPT) system, suitably shapes and properly steers an intensified beam toward a specific target area. Coupling more radiated energy to the receiving aperture, DR technique benefits system efficiency and brings great flexibility, which entails further investigation. This article addresses DR realization from a system perspective. A novel architecture of MPT transmitter is proposed, which equips the system with multiple independently controlled RF power outputs and serves as a solid hardware basis for DR realization. Three DR algorithms are also introduced, providing convenient methods to obtain maximum receiving power for the receiver via software control. A 915 MHz/100 W MPT transmitter is fabricated in the lab, and an MPT verification platform is also constructed. Proposed architecture and algorithms are fully verified with experiments, which show a good performance in DR realization.