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arXiv · 2007.05077

Coupling-independent, Real-time Wireless Resistive Sensing through Nonlinear PT-symmetry

Siavash Kananian·George Alexopoulos·Ada S. Y. Poon
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Abstract

We report the realization of coupling-independent, robust wireless sensing of fully-passive resistive sensors. PT-symmetric operation obviates sweeping, permitting real-time, single-point sensing. Self-oscillation is achieved through a fast-settling nonlinearity whose voltage amplitude is proportional to the sensor's resistance. These advances markedly simplify the reader. A dual time-scale theoretical framework generalizes system analysis to arbitrary operating conditions and a correction strategy reduces errors due to detuning from PT-symmetric conditions by an order of magnitude.

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Siavash Kananian, George Alexopoulos, Ada S. Y. Poon. 2020-07-27. Coupling-independent, Real-time Wireless Resistive Sensing through Nonlinear PT-symmetry. https://doi.org/10.1103/physrevapplied.14.064072

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