A Novel Method for Data and Power Transmission Through Metallic Structures

Freitas, Susanna de Campos de Vital; Domingos, Fabiano Cezar; Mirzavand, Rashid; Maunder, Adam; Naseri, Parinaz; Mousavi, Pedram

doi:10.1109/tie.2016.2644602

Cited by 19 publications

(9 citation statements)

References 25 publications

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“…In addition to this, small mismatches are expected given the approximate equations utilized to model the helical coil's L and R [2], [39]- [41]. As presented in many geometry optimization techniques, an extremely high order of accuracy is not overly crucial, [1], [9], [20], [43]. Hence, for this work (i.e., high power, non-mm size helical coils), in modeling the coil's ac ohmic resistance the proximity effect losses are neglected to provide a workable design method.…”

Section: Experimental Results and Validationmentioning

confidence: 99%

“…In high frequency IPT systems, the influence of proximity effect on the resistance of a single turn of the solenoid is increased. However, with an increase in the IPT system's operating frequency the physical size of the coil becomes smaller (i.e., less number of turns) [20]. The cumulative proximity effect losses in these coils can be neglected where the solenoid is not in mm-size range and is used in high power (i.e., ≥1 W) applications.…”

Section: Experimental Results and Validationmentioning

confidence: 99%

“…their uniform magnetic field [14], can provide a large inductive coupling in comparison with spiral coils [6], [9], [14]- [17]. Examples of such systems include high-voltage battery charging [11], [18], [19] and WPT through-metal-walls [20]- [22]. It should be noted that selecting the coil topology is mainly influenced by the application's spatial restriction.…”

Section: Introductionmentioning

confidence: 99%

“…This requirement yields a bulky coil geometry which in a physical implementation can encounter spatial difficulties. For example, in a typical WPT application transmitting 0.5-5-W power through-metal, a solenoid with a diameter of 84 mm, length of 152 mm, and 260 turns is required to operate at 0.3 MHz [20], geometrical optimization of the Tx/Rx coil, besides improving the PTE, can significantly reduce the system's overall size. In addition to this, the proposed geometry optimization technique can also advantage low power IPT applications with sizable Tx/Rx helical coils.…”

Section: Introductionmentioning

confidence: 99%

“…An iterative design algorithm for proper selection of the FoM's numerical value and the subsequent optimization of coil geometry is presented in Section IV. In Section V, functionality of the proposed technique has been demonstrated by optimizing the coil geometry for a typical IPT system, similar to the WPT application in [20] as discussed above. The practical PTE measurements of the exemplified system have been presented in Section V followed by concluding remarks in Section VI.…”

Section: Introductionmentioning

confidence: 99%

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A Design Technique for Optimizing Resonant Coils and the Energy Transfer of Inductive Links

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2021

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Section: Experimental Results and Validationmentioning

confidence: 99%

Section: Experimental Results and Validationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Design Technique for Optimizing Resonant Coils and the Energy Transfer of Inductive Links

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Characterization of a resonant capacitively coupled wireless power transfer system for communication purposes at 6 MHz

Belau

Domingos

Freitas

et al. 2021

IET Science Measure & Tech

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This work characterizes a wireless power transmission (WPT) system operating at the 6 MHz frequency band for wireless information transfer purposes. To perform the characterization, the channel is modelled using its 2-port network scattering parameters. Then, a long string of symbols encoded with on-off keying and modified Miller encoding is passed through the channel model at various data rates. The original data is recovered from the channel output signal using a software-defined receiver. Bit error rate curves and eye diagrams are created for each encoding scheme and data rate. To verify the simulated results, the aforementioned data strings are transferred through the actual WPT system and output signals are post-processed in the digital domain with the same software-defined receiver. For comparison purposes, the performance of the WPT channel is compared to that of a conventional wireless communication channel with a flat additive white Gaussian noise model. The simulation and measurement results demonstrate that the provided WPT system can be used for data transfer with an acceptable error rate. 1 INTRODUCTION With emerging advances in RFID, wireless sensor networks (WSN), and biomedical implants, there is a push for systems that are able to power up batteryless devices and enable bidirectional communication with them [1] in order to send control signals and receive sensor data. However, wireless power transfer (WPT) and wireless communication/information transfer (WIT) differ in the metrics that each attempts to maximize [2]. WPT attempts to transfer maximum power with high efficiency, which often requires highly resonant (high Q) structures to increase power output [3, 4]. On the other hand, WIT attempts to increase data rate, which requires large bandwidths. Thus, there are two opposing design parameters: highly resonant but narrowband designs for WPT and wideband designs for wireless communication. This trade-off motivates designs in which WPT and WIT are separated either spatially [5] (such that each purpose has its own set of antennas) or in frequency as in [6-8]. This separation in designs is effective but requires dedicated hardware for each purpose. Thus, there is merit in having a This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Research on the efficiency of single-wire power transmission

Zhang

Guo

Wang

et al. 2021

J. Phys.: Conf. Ser.

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With the development of related theoretical research on Single Wire Power Transfer(SWPT), the SWPT system has demonstrated its advantages in a variety of special environments. In this paper, the influence of capacitance and inductance on transmission efficiency is studied in order to improve the transmission efficiency of swpt system. This article simplifies and analyzes the circuit model of the SWPT system. It can be found that the system is a second-order circuit, and its response distribution trend conforms to the Gaussian function distribution. There should be an optimal ratio between the capacitor and the inductance to maximize the circuit response. Through the influence of different capacitance, inductance, and transmission distance on transmission efficiency, multiple sets of experiments and simulations are carried out. The experiment found that the capacitance, inductance, and transmission efficiency are in accordance with the Gaussian non-normal distribution, and the acquired data is fitted by the Gaussian function. The average relative error of the fitting is less than 1% under different transmission distances, which can be better reflect the relationship between the three. The study of single-wire power transmission system will provide a key reference for wireless power transmission.

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A Novel Method for Data and Power Transmission Through Metallic Structures

Cited by 19 publications

References 25 publications

A Design Technique for Optimizing Resonant Coils and the Energy Transfer of Inductive Links

A Design Technique for Optimizing Resonant Coils and the Energy Transfer of Inductive Links

Characterization of a resonant capacitively coupled wireless power transfer system for communication purposes at 6 MHz

Research on the efficiency of single-wire power transmission

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