Experiments of Time-Reversed Pulse Waves for Wireless Power Transmission in an Indoor Environment

Ibrahim, Rony; Voyer, Damien; Bréard, Arnaud; Huillery, Julien; Vollaire, Christian; Allard, Bruno; Zaatar, Y.

doi:10.1109/tmtt.2016.2572679

Cited by 32 publications

(10 citation statements)

References 17 publications

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“…It is performed by using the impulse response of a complex propagation channel to focus the waves and produce a high peak at the focusing point 43‐45 . Ibrahim et al, 46 showed that TR spatio‐temporal properties offer higher energy performance for WPT in indoor environment as compared with CW. In Reference 47, preliminary results found that TR mode presents better performance in terms of energy efficiency of the forward link than CW and PW modes using a passive commercial tag in complex propagation environment.…”

Section: State Of the Artmentioning

confidence: 99%

Experimental platform for waveform optimization in passive UHF RFID systems

Merakeb

Ezzeddine

Huillery

et al. 2020

Int J RF Microw Comput Aided Eng

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The article presents an experimental platform, so called “RFID Waveformer,” dedicated to the study of waveform optimization in the radio frequency identification (RFID) context. It is a flexible solution that enables waveform design and their energetic performance evaluation in a ultra high frequency (UHF) RFID link following the ISO‐18000 GEN2 standard protocol. It consists of a reader emulated by a LabVIEW interface controlling radiofrequency laboratory instruments, which perform real time tag response detection. Its interconnection with MATLAB routines enables the design and the evaluation of arbitrarily shaped RFID waveforms. In this article, for illustration, three waveforms are tested with RFID Waveformer in a complex propagation environment: pulsed wave (PW) and time reversal (TR) modes compared to the traditional continuous wave (CW) mode. Experimental results show that both PW and TR modes improve the energetic efficiency of the forward link and so the RFID read range compared to CW mode. Furthermore, TR presents the optimal efficiency in complex propagation medium. The RFID Waveformer enables tag response detection in the three modes offering ease of use and repeatability of measurements. The RFID Waveformer being not limited to the scenario considered in this article, it is a versatile solution extendable to other contexts.

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Section: State Of the Artmentioning

confidence: 99%

Experimental platform for waveform optimization in passive UHF RFID systems

Merakeb

Ezzeddine

Huillery

et al. 2020

Int J RF Microw Comput Aided Eng

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“…The population vectors of the first generation are initialized randomly inside the feasible solution space. According to (7), the minimum value of a n is 0. On the other hand, the maximum value is √ 2P t , considering a scenario where all the available power would be allocated in only one of the sub-carriers.…”

Section: Modifications For Application In Waveform Designmentioning

confidence: 99%

“…When the propagation between the transmitter and the receiver is characterized by a multipath channel function, Channel State Information (CSI) should be taken into account for the design of multi-tone signals. Towards this direction, multi-tone waveforms constructed by Time Reversal (TR) processing are proposed for WPT in [7,8]. TR waves are designed in a predetermined way, according to the CSI, and are capable of focusing on the receiver with the highest peak voltage.…”

Section: Introductionmentioning

confidence: 99%

Differential Evolution in Waveform Design for Wireless Power Transfer

Doanis

Boursianis

Huillery

et al. 2020

Telecom

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The technique of transmitting multi-tone signals in a radiative Wireless Power Transfer (WPT) system can significantly increase its end-to-end power efficiency. The optimization problem in this system is to tune the transmission according to the receiver rectenna’s nonlinear behavior and the Channel State Information (CSI). This is a non-convex problem that has been previously addressed by Sequential Convex Programming (SCP) algorithms. Nonetheless, SCP algorithms do not always attain globally optimal solutions. To this end, in this paper, we evaluate a set of Evolutionary Algorithms (EAs) with several characteristics. The performance of the optimized multi-tone transmission signals in a WPT system is assessed by means of numerical simulations, utilizing a simplified Single Input Single Output (SISO) model. From the model evaluation, we can deduce that EAs can be successfully applied to the waveform design optimization problem. Moreover, from the presented results, we can derive that EAs can obtain the optimal solutions in the tested cases.

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“…The spatial and temporal focusing properties of TR were demonstrated for microwave applications by Lerosey et al [19]. They have since been applied for wireless communications [20], [21], source localization [22], and wireless power transfer [23], [24]. In a TR experiment, the field radiated by a source is first recorded using an array of antennas known as the time reversal mirror (TRM) [25].…”

Section: Introductionmentioning

confidence: 99%

Transient Electric Field Shaping With the Linear Combination of Configuration Field Method for Enhanced Spatial Control of Microwave Plasmas

et al. 2020

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The demonstration of enhanced spatial control of nanosecond microwave plasmas generated by the time reversal plasma source is presented in this paper. This new microwave plasma source relies on the spatio-temporal control of the electric field inside an all-metal plasma reactor by modifying the waveform of a high power microwave signal. More specifically, it originally used the spatio-temporal focusing capabilities of the time reversal method to focus a high electric field in a small location. However, a parasitic microwave breakdown can still occur at sharp corners or wedges inside the cavity due to the local enhancement of the residual electric field during time reversal focusing. Thus, it is proposed to use the linear combination of configuration field method to improve field control inside the reactor. Its transient electric field shaping capabilities turn out to be a good candidate for the development of a low pressure microwave "plasma brush".

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Experiments of Time-Reversed Pulse Waves for Wireless Power Transmission in an Indoor Environment

Cited by 32 publications

References 17 publications

Experimental platform for waveform optimization in passive UHF RFID systems

Experimental platform for waveform optimization in passive UHF RFID systems

Differential Evolution in Waveform Design for Wireless Power Transfer

Transient Electric Field Shaping With the Linear Combination of Configuration Field Method for Enhanced Spatial Control of Microwave Plasmas

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