Self-excited Circuit with Negative Resistance for Parity-time-symmetric Wireless Power Transfer and Enhanced Thermal Noise as Seed for Oscillation
Self-excited Circuit with Negative Resistance for Parity-time-symmetric Wireless Power Transfer and Enhanced Thermal Noise as Seed for Oscillation
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DOI：
10.1541/ieejjia.20006504
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发表时间：
2021-03
影响因子：
1.7
通讯作者：
T. Kyoden;H. Ishida;Hiroto Furukawa
中科院分区：
文献类型：
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作者：
T. Kyoden;H. Ishida;Hiroto Furukawa
在这项研究中，增强白色噪声的奇偶时间对称（PTS）无线功率传输（WPT）的效果进行了研究，通过建模和仿真与TopSpice。利用耦合模理论描述了工作原理。本研究特别关注耦合情况，从强耦合到不完全PTS匹配。接收器电路中的电压幅度增加，因为PTS条件被完全保持。然而，很难启动振荡，因为在PTS-WPT中对于负电阻状态中的增益，在电压幅度和高响应振荡之间存在折衷。通过增强白色噪声信号，在高电压和低增益下实现高响应振荡。本文研究了白色噪声对WPT负阻的增强作用。所提出的方案能够在高功率下实现较早的稳定振荡。
In this study, the effect of enhancing white noise for parity-time-symmetric (PTS) wireless power transfer (WPT) is investigated through modeling and simulation with TopSpice. The operating principle is described using the coupled mode theory. This study specifically focuses on the coupling situation, from strong coupling to incomplete PTS matching. The voltage amplitude in the receiver circuit increases because the PTS condition is completely preserved. However, it is difficult to initiate oscillation as there is a trade-off between the voltage amplitude and highly responsive oscillation in PTS-WPT for gain in the negative resistance regime. By enhancing the white noise signal, highly responsive oscillation is achieved at a high voltage and low gain. This study focuses on the enhancement of white noise for negative resistance for WPT. The proposed enables achieving to earlier stable oscillation with a high power supply.