Basic Study of Both-Sides Retrodirective System for Minimizing the Leak Energy in Microwave Power Transmission

Takayuki MATSUMURO  Yohei ISHIKAWA  Naoki SHINOHARA  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E102-C   No.10   pp.659-665
Publication Date: 2019/10/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.2019MMP0011
Type of Manuscript: Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technologies)
Category: 
Keyword: 
microwave power transmission,  retrodirective system,  beam propagation method,  phase conjugator,  feedback oscillation,  

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Summary: 
In the beam-type microwave power transmission system, it is required to minimize the interference with communication and the influence on the human body. Retrodirective system that re-radiates a beam in the direction of arrival of a signal is well known as a beam control technique for accurate microwave power transmission. In this paper, we newly propose to apply the retrodirective system to both transmitting and receiving antennas. The leakage to the outside of the system is expected to minimize self-convergently while following the atmospheric fluctuation and the antenna movement by repeating the retrodirective between the transmitting and receiving antenna in this system. We considered this phenomenon theoretically using an infinite array antenna model. Finally, it has been shown by the equivalent circuit simulation that stable transmission can be realized by oscillating the system.