Thermodynamic Signal-to-Noise and Channel Capacity Limits of Magnetic Induction Sensors and Communication Systems

Morag, Yahav; Tal, Nikolay; Nazarathy, Moshe; Levron, Yoash

doi:10.1109/jsen.2015.2506341

Cited by 12 publications

(13 citation statements)

References 26 publications

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“…Explicit expressions for the resistance terms of the circuit (i.e., R AC, R rad, and R core ) are each described in detail in [39]. The coil Ohmic resistance increases drastically with frequency, due to skin and proximity effects.…”

Section: Resistance Terms Of the Equivalent Circuitmentioning

confidence: 99%

“…The coil Ohmic resistance increases drastically with frequency, due to skin and proximity effects. The coil DC resistance is approximated as [39]:…”

Section: Resistance Terms Of the Equivalent Circuitmentioning

confidence: 99%

“…The objective of this study is, therefore, to extend previous works [31,39,40], and develop a strict limit for the extracted power in MIEH systems while accounting for the HF effects. Maximal available output power is mapped as a function of frequency, and the optimal operating frequency is then derived.…”

Section: Introductionmentioning

confidence: 98%

“…Although [30,31] performs full-wave analysis, skin and proximity effects within the coil itself were not discussed. These HF aspects were partly addressed by the authors in the context of magnetic sensors [39] and induction power transfer systems [40].…”

Section: Introductionmentioning

confidence: 99%

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Output Power Limit in Energy Harvesting Systems Based on Magnetic Induction Incorporating High-Frequency Effects

Morag

Levron

2019

Instruments

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Wireless power transfer systems based on magnetic induction are usually modeled using the magneto-quasi-static approximation, and by neglecting skin effects and radiation losses. These assumptions imply that the extracted power can grow unlimitedly by increasing frequency or coil size. To bridge this gap, this work proposes general expression for the actual received power of magnetic induction-based energy harvesting transducer, extracting power from a given ambient magnetic field, while accounting for the high-frequency effects. A primary result is that the receiver’s output power is inherently limited by radiation losses at high frequencies and impaired by skin and proximity effects at medium frequencies. The approach provides a design tool for estimating the maximal power that can be delivered through a given transducer, and the optimal operating frequency.

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Section: Resistance Terms Of the Equivalent Circuitmentioning

confidence: 99%

“…The coil Ohmic resistance increases drastically with frequency, due to skin and proximity effects. The coil DC resistance is approximated as [39]:…”

Section: Resistance Terms Of the Equivalent Circuitmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Output Power Limit in Energy Harvesting Systems Based on Magnetic Induction Incorporating High-Frequency Effects

Morag

Levron

2019

Instruments

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“…where μ 0 is the permeability of free space and B the magnetic induction field produced by a target with the moment of M at distance R. A magnetic sensor [13,14] measures a net field composed of target magnetic induction field, earth field, and magnetic noise…”

Section: Magnetic Anomaly Detectionmentioning

confidence: 99%

Parabolic Trail Obf in Magnetic Anomaly Detection

Yang¹,

Liu²,

Fang³

2017

PIER B

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Abstract-Magnetic anomaly detection (MAD) is to find hidden ferromagnetic objects, and a hidden object is often described as a magnetostatic dipole. Many detection methods are based on the orthonormal basis functions when the target moves along a straight line relatively to the magnetometer. A new kind of parabolic trail orthonormal basis functions (PTOBF) method is proposed to detect the magnetic target when the trajectory of the target is parabola. The simulation experiment confirms that the proposed method can detect the magnetic anomaly signals in white Gaussian noise when SNR is −15.56 dB. The proposed method is sensitive to the characteristic time and curvature. High detection probability and simple implementation of proposed method make it attractive for the real-time applications.

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Optimization of channel capacity in magnetic communication systems subjected to total power constraint

Morag

Tal

Levron

2017

2017 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)

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Thermodynamic Signal-to-Noise and Channel Capacity Limits of Magnetic Induction Sensors and Communication Systems

Cited by 12 publications

References 26 publications

Output Power Limit in Energy Harvesting Systems Based on Magnetic Induction Incorporating High-Frequency Effects

Output Power Limit in Energy Harvesting Systems Based on Magnetic Induction Incorporating High-Frequency Effects

Parabolic Trail Obf in Magnetic Anomaly Detection

Optimization of channel capacity in magnetic communication systems subjected to total power constraint

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