IEEE Organizations related to Wireless Power Transmission

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No organizations are currently tagged "Wireless Power Transmission"



Conferences related to Wireless Power Transmission

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Periodicals related to Wireless Power Transmission

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No periodicals are currently tagged "Wireless Power Transmission"


Most published Xplore authors for Wireless Power Transmission

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Xplore Articles related to Wireless Power Transmission

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Analysis of Efficiency Characteristics of Superconducting Coil-Applied Wireless Power Transmission Systems by Transmission Distance

2017 16th International Superconductive Electronics Conference (ISEC), 2017

A significant amount of research is being done on the commercialization of magnetic-resonance-based wireless power transmission. To this end, research on boosting transmission efficiency is essential. In this paper, a wireless power transmission system was designed using superconducting coils to boost wireless power transmission efficiency. The efficiency of a normal wireless power transmission system and a superconducting wireless power transmission ...


An omnidirectional wireless power transmission system with controllable magnetic field distribution

2016 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM), 2016

A design method for the omnidirectional wireless power transmission system (OWPT) is proposed. The OWPT is realized by applying the rotating magnetic field, which is generated by the proposed transmitter. The proposed transmitter is composed by two mutually perpendicular loops fed by two excitation sources with the same magnitude but different phases. An OWPT system prototype is fabricated and measured. ...


Iterative non-breakdown rectifier topology for via-tissue multi-sine wireless power transmission

2015 IEEE MTT-S 2015 International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO), 2015

This paper presents a novel iterative non-breakdown rectifier topology which would practically solve the rectifier's early breakdown problem in multi-sine wireless power transmission (WPT) for biomedical application. The proposed rectifier holds an iterative topology which can extend the reverse breakdown voltage limitlessly with its forward threshold voltage remains. It keeps high conversion efficiency even with the high peak voltage input ...


Retro-directive beamforming versus retro-reflective beamforming for wireless power transmission

2017 IEEE Wireless Power Transfer Conference (WPTC), 2017

This paper studies the difference between retro-directive beamforming technique and retro-reflective beamforming technique in the context of wireless power transmission applications. In all of our studies, a wireless power receiver broadcasts continuous-wave pilot signal, the wireless power transmitter receives and analyzes the pilot signal, and finally the wireless power transmitter transmits continuous-wave power with phase profile conjugate to that of ...


Evaluation of a fractal loop for wireless power transmission

2016 IEEE Wireless Power Transfer Conference (WPTC), 2016

Magnetic resonance based wireless power transmission using a fractal loop with a three-dimensional structure is evaluated by simulation and experiment. Using a fractal shape optimized with a genetic algorithm, we develop a wireless power transmitting system that can tolerate lateral positioning deviation with a fixed matching circuit.



Educational Resources on Wireless Power Transmission

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IEEE-USA E-Books

  • Analysis of Efficiency Characteristics of Superconducting Coil-Applied Wireless Power Transmission Systems by Transmission Distance

    A significant amount of research is being done on the commercialization of magnetic-resonance-based wireless power transmission. To this end, research on boosting transmission efficiency is essential. In this paper, a wireless power transmission system was designed using superconducting coils to boost wireless power transmission efficiency. The efficiency of a normal wireless power transmission system and a superconducting wireless power transmission system was calculated according to the transmission distance. Results confirmed that compared to the use of the ordinary conducting coil, the use of superconducting coil offered higher transmission efficiency at a farther distance.

  • An omnidirectional wireless power transmission system with controllable magnetic field distribution

    A design method for the omnidirectional wireless power transmission system (OWPT) is proposed. The OWPT is realized by applying the rotating magnetic field, which is generated by the proposed transmitter. The proposed transmitter is composed by two mutually perpendicular loops fed by two excitation sources with the same magnitude but different phases. An OWPT system prototype is fabricated and measured. The experimental results validate the property of omnidirectional wireless power transmission. Furthermore, the magnetic field distribution can be steered by the feeding phase difference between the two loops. This capability enable the proposed OWPT system to focus energy for receiver moving in a limited range of receiving angle.

  • Iterative non-breakdown rectifier topology for via-tissue multi-sine wireless power transmission

    This paper presents a novel iterative non-breakdown rectifier topology which would practically solve the rectifier's early breakdown problem in multi-sine wireless power transmission (WPT) for biomedical application. The proposed rectifier holds an iterative topology which can extend the reverse breakdown voltage limitlessly with its forward threshold voltage remains. It keeps high conversion efficiency even with the high peak voltage input in multi-sine WPT application. Measured I-V curve shows that the proposed rectifier would achieve an extended breakdown voltage from -7.5 V to -52V with a low reverse leakage current while keep its original forward threshold voltage. The proposed rectifier topology brings insight for the practical high efficiency multi-sine WPT system design.

  • Retro-directive beamforming versus retro-reflective beamforming for wireless power transmission

    This paper studies the difference between retro-directive beamforming technique and retro-reflective beamforming technique in the context of wireless power transmission applications. In all of our studies, a wireless power receiver broadcasts continuous-wave pilot signal, the wireless power transmitter receives and analyzes the pilot signal, and finally the wireless power transmitter transmits continuous-wave power with phase profile conjugate to that of the received pilot signal. Our study demonstrates that, a linear equi-spaced array configuration employed by the wireless power transmitter behaves as a retro-directive beamformer when the wireless power receiver resides in the far-zone of the wireless power transmitter, whereas it behaves as a retro-reflective beamformer when the wireless power receiver is not in the far-zone. Our studies further show that, far-zone gain could be reduced by adjusting the array's geometrical configuration without affecting focusing in the near-zone. All the conclusions drawn in this paper are supported by numerical results as well as experimental results.

  • Evaluation of a fractal loop for wireless power transmission

    Magnetic resonance based wireless power transmission using a fractal loop with a three-dimensional structure is evaluated by simulation and experiment. Using a fractal shape optimized with a genetic algorithm, we develop a wireless power transmitting system that can tolerate lateral positioning deviation with a fixed matching circuit.

  • A multi-cycle Q-modulation technique for wirelessly-powered biomedical implants

    This paper presents a new technique, called multicycle Q-modulation, which can be used in wireless power transmission (WPT) to modulate the quality factor (Q) of the receiver (Rx) and dynamically match the load impedance with that of the inductive link. A key advantage of the proposed Q-modulation method is that it can be easily implemented using off-the-shelf power management components without requiring any fast switching function at the carrier frequency, which is only feasible in integrated circuit implementation. The multi-cycle Q-modulation is analyzed theoretically by a lumped circuit model, and verified in simulation and measurement using an off-the-shelf receiver. In a conventional 2-coil link, the proposed method increases the power amplifier (PA) plus inductive link efficiency from 1.2% to 12.8% at RL = 1 kΩ, and from 17.8% to 24.5% at RL = 50 Ω with 170 mW power delivered to the load.

  • A reconfigurable scheme of wireless power transmission in fully-enclosed box

    This paper proposes a reconfigurable scheme of wireless power transmission in fully-enclosed box. The proposed scheme includes one transmitting element and multiple parasitic elements. Field distribution inside the box is reconfigured by switching the parasitic elements' termination between open and short, with the aim of delivering wireless power efficiently to a receiver whose location is not fixed. Experimental results demonstrate that, via tuning nine parasitic elements at frequency 425 MHz it is possible to achieve power transmission efficiency greater than 70% when a wireless power receiver changes its location within a 0.4 m by 0.6 m region inside a 1-cubic-meter cubic box.

  • Parameter Identification Method for Wireless Power Transmission System Based on Radial Basis Function Neural Network

    This paper introduces a method based on the intelligent algorithm for wireless power transmission system parameter identification. The radial basis function (RBF) neural network has been used as the algorithm model, the amplitude, and frequency of the input terminal voltage of the wireless transmission system, the amplitude of the input current and as the sample eigenvalue, the phase angle predicts the resistance value and capacitance value of the receiving end of the system, thus avoiding the complicated work measured at the receiving end. The sample data used by the algorithm is generated by calculating the exact value through the system matrix equation and then adding a certain amplitude of noise, which is close to the actual operating parameters of the wireless transmission system. The RBF neural network training process is divided into two parts: sample center point position calculation and weight value optimization. The sample center point position is calculated by the k-means clustering algorithm, and the weight value is optimized by the driven adaptive learning rate gradient. algorithm. The final test results show that the RBF neural network can predict the parameters of the wireless transmission system with high precision, and has certain anti-interference ability, good generalization performance, and can be applied in the actual wireless transmission system. At the end of the paper, the application scope of the algorithm is summarized, and the improvement and possible improvement methods of the algorithm are proposed.

  • On the design of frequency diverse arrays for wireless power transmission

    This paper proposes a frequency diverse array (FDA) design approach, based on nonlinear frequency offsets and time-modulated weights, for far-field wireless power transmission (WPT). The objective is to optimize the frequency offsets and weights across the array elements to provide maximum end-to-end energy transfer efficiency (ETE). A set of numerical examples is reported and discussed to validate the effectiveness of the proposed WPT-FDA approach.

  • A novel resonant-linear hybrid converter applied in microwave wireless power transmission system

    In this paper, we propose a novel topology to increase both the efficiency and the linearity of the power amplifier applied in the transmitter of the microwave wireless power transmission system. The proposed topology consists of a Class Φ2 inverter in parallel with a voltage-controlled Class AB liner amplifier. The proposed topology achieves both high efficiency and high linearity, and it has the advantages of low device voltage stress, small volume and light weight. Finally, a simulation model and a prototype with 100MHz, 24V DC input 10W AC output are built to verify the theoretical analysis.



Standards related to Wireless Power Transmission

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No standards are currently tagged "Wireless Power Transmission"