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http://dx.doi.org/10.5762/KAIS.2021.22.4.10

Non-Contact Sensing Method using PT Symmetric Circuit with Cross-Coupled NDR Circuits  

Hong, Jong-Kyun (Division of Physics, Hanyang University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.22, no.4, 2021 , pp. 10-16 More about this Journal
Abstract
This paper proposes a model that considers the parity-time symmetric structure as a state detection circuit for sensor applications using a stretchable inductor. In particular, to obtain a more practical computer simulation result, the stretchable inductor model was applied to this study model by referring to previously reported experimental results. The resistance component and phase component were controlled through the negative differential resistance circuit used in this study. In addition, the imbalance of the circuit caused by a change in the characteristics of the stretchable inductor could be compensated for using a negative differential resistance circuit. In particular, an analysis of the frequency characteristics of the sensor driving circuit of the parity-time symmetric structure proposed in this study confirmed that the Q-factor could be increased up to 20 times compared to the conventional resonant circuit.
Keywords
Wireless Power Transfer Circuit; Wireless Sensing Circuit; PT Symmetry; Stretchable Inductor; Negative Differential Resistance Circuit; High Quality Factor;
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