Limit behavior of the magnetic coupling coefficient for mid-range, near-field applications

Guthrie, Emily; Frolenkov, Anton; Mur-Miranda, José Oscar

doi:10.1088/1742-6596/476/1/012116

Cited by 3 publications

(3 citation statements)

References 9 publications

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“…3d). These values are comparable to those which can be observed over considerably larger distances, appropriate for real-world applications, when suitably scaled coils are used, and to the configuration considered in the preexisting study on magnetically coupled Colpitts oscillators [31], [36].…”

Section: Circuits and Measurements A Oscillator Design Realization And Couplingsupporting

confidence: 78%

“…Importantly, the coupling coefficients under consideration, on the order of ≈ 0.01, are expected to be unproblematic to realize over considerably longer distances, on the order of meters and beyond, using optimized electromagnetic structures. It should be noted that even this though initial laboratory demonstration was based on simple inductive coupling, without any attempt at design optimization, the mechanisms are expected to straightforwardly generalize to diverse antenna types, as well as to frequencies well-suited for on-chip coil realization [36], [64], [67].…”

Section: B Noveltymentioning

confidence: 99%

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Distributed Sensing Via Inductively Coupled Single-Transistor Chaotic Oscillators: A New Approach and Its Experimental Proof-of-Concept

et al. 2020

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Emerging applications across environmental, biomedical, and structural monitoring require the measurement of physical variables over extended regions. Because addressing many sensors individually can result in impractical bandwidth and power requirements, there is a need for distributed sensing approaches wherein readouts are obtained directly at the ensemble level. In turn, this generally requires sensor nodes capable of interacting with each other to implement the required readout statistic. Here, the first practical steps towards approaching this challenge via a nonlinear analog approach based on chaotic synchronization are presented. Namely, single-transistor oscillators, representing remarkably low-complexity yet highlyflexible entities, are experimentally found to be suitable for wireless coupling via mutual induction, realizing a simple form of telemetry for luminous flux. Via numerical simulations and numerous laboratory experiments, a rich repertoire of possible interactions among multiple sensor nodes and between the same and an external exciter is demonstrated, encompassing synchronization, desynchronization, relay effects, and chaotic transitions. Together, these results reveal the possibility and means of accurately estimating the average of a distributed physical magnitude from the complexity of ensemble dynamics. This new approach contributes an important blueprint for future work using simple chaotic circuits in sensing applications.

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Section: Circuits and Measurements A Oscillator Design Realization And Couplingsupporting

confidence: 78%

Section: B Noveltymentioning

confidence: 99%

Distributed Sensing Via Inductively Coupled Single-Transistor Chaotic Oscillators: A New Approach and Its Experimental Proof-of-Concept

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The second method is an experimental determination of α as a function of the magnet's position. Usually, this approach is applied for the complicated harvesters [23] but again a constant coupling coefficient is sought. In some papers the coupling factor has been evaluated using the finite element approach [24], [25].…”

Section: Coupling Coefficientmentioning

confidence: 99%