A Study on Automatically Target-Chasing Microwave Power Transfer Systems in Multipath Environments

Naoki Shinohara and Taichi Sasaki
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Naoki Shinohara: Research Institute for Sustainable Humanosphere, Kyoto University, Uji, Kyoto 6110011, Japan
Taichi Sasaki: Research Institute for Sustainable Humanosphere, Kyoto University, Uji, Kyoto 6110011, Japan

Energies, 2022, vol. 15, issue 7, 1-14

Abstract: In this paper, we propose novel retrodirective systems to improve the efficiency and safety of microwave power transmission (MPT) systems in multipath environments. The retrodirective system consists of an array antenna with phased conjugation circuits and it sends back the phase-conjugate signal toward the pilot signal transmitted from the receiver. It is usually applied for one receiver MPT system, however, Ossia corp. develops the new retrodirective system in multipath environments named ‘Cota’. We simulated the detail of the Cota system, e.g., one receiver in multipath circumstance, one receiver with obstacle in the multipath circumstance, and multi receiver. Furthermore, we revised the retrodirective system with phase information as well as the amplitude information of the pilot signal to improve the MPT efficiency. We also find effect of the MPT efficiency by phase difference between two pilot signal sources. At last, we carried out the experiments of the retrodirective system in multipath circumstance to prove the simulation results.

Keywords: wireless power transfer; microwave power transmission; retrodirective (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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