Magnetically coupled resonant wireless power transmission: An artificial transmission line approach

Monti, Giuseppina; Tarricone, Luciano; Dionigi, Marco; Mongiardo, M.

doi:10.23919/eumc.2012.6459423

Cited by 21 publications

(12 citation statements)

References 11 publications

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“…This is obtained by deriving for the periodic network an equivalent transmission line model that both simplifies the theoretical analysis and can be used in circuital simulation for optimizations. Similar results have been reported in Monti et al 26 ; however, with respect to the formulas reported in the study, 26 the ones reported in this paper provide a better agreement with the results achieved by circuital simulations. The improved accuracy of the behaviour predicted by the formulas reported in this paper is due to the choice of the unit cell adopted for modeling the link as a periodic network.…”

Section: Introductionsupporting

confidence: 93%

Two‐port network approach for a wireless power transfer link using a cascade of inductively coupled resonators

Monti

Tarricone

Mongiardo

2017

Int J Numerical Modelling

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Summary A wireless power transmission link consisting of a transmitting and a receiving resonator wirelessly connected by means of N relay resonators is investigated, and a 2‐port network approach is proposed. The presented approach exploits the properties of periodic networks to derive useful closed‐form formulas that can be used to match the wireless energy link with respect to generic reference impedances.

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Section: Introductionsupporting

confidence: 93%

Two‐port network approach for a wireless power transfer link using a cascade of inductively coupled resonators

Monti

Tarricone

Mongiardo

2017

Int J Numerical Modelling

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“…The two ports network realizing the maximum efficiency solution is illustrated in Figure 3. The admittance values of Equations (5,6) give the following expression for the efficiency:…”

Section: Maximum Efficiency Solutionmentioning

confidence: 99%

“…The first practical demonstration of wireless power transmission (WPT) dates back to 1891 and was an experiment of Tesla exploiting a capacitive coupling. In recent years, WPT technology has gained a renewed interest; in particular, significative attention has been dedicated to systems of inductively coupled resonators [1][2][3][4][5][6][7][8][9][10], to cite just a few, for the realization of mid range WPT.…”

Section: Introductionmentioning

confidence: 99%

Modelling of wireless power transfer links based on capacitive coupling

Dionigi

Mongiardo

Monti

et al. 2016

Int J Numerical Modelling

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Summary By using network theory, a wireless power transfer network based on coupled capacitance, that is, on electric field coupling, is numerically investigated. Three possible solutions of interest are considered: one that maximizes efficiency, one that maximizes the power delivered to the load and one that realizes power matching (conjugate matching). In each case, at a selected frequency, the optimal source/load impedances are derived in closed form. It is shown that maximum efficiency solution has the possibility of achieving almost unitary efficiency. It is also shown that, as the efficiency is increased, the power delivered to the load is decreased. Copyright © 2016 John Wiley & Sons, Ltd.

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“…The embedding of electronic circuitry in clothes and/or apparel accessories, however, must not compromise the usability of the product and must not interfere with the freedom of movement of the user. In this regard, either near-field [Kwun-Chiu et al, 2014;Laskovski et al, 2011;Monti et al, 2012;Costanzo et al, 2014] or far-field [Riviere et al, 2010;Monti et al, 2013;Masotti et al, 2011;Monti et al, 2014;Congedo et al, 2011] wireless technologies may effectively serve the purpose both for data and power transmission. Nevertheless, it is crucial that the necessary electronic devices and antennas be seamlessly integrated in wearable and portable accessories.…”

Section: Introductionmentioning

confidence: 99%

Compact resonator on leather for nonradiative inductive power transfer and far‐field data links

et al. 2016

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In this paper, a wearable resonator suitable to be used for both power and data transmission is presented. The basic element is a complementary split ring resonator that has been optimized to operate both as a dipole‐like antenna at 2.45 GHz and as the receiver of a resonant energy link operating at 915 MHz when coupled with an identical external resonator connected to a power source. Experimental data referring to a prototype fabricated by using a conductive adhesive fabric on a leather substrate are reported and discussed. With regard to the wireless resonant energy link (WREL), it is demonstrated that at 915 MHz, the RF‐to‐RF power transfer efficiency of the link is approximately 78.1%. As for the performance obtained when the resonator is used as an antenna, a gain of approximately −0.43 dB was obtained. Additionally, the performance of the proposed link when connected to a Power Management Unit (PMU) that converts the radio frequency (RF) energy received by the wearable resonator into DC energy that can be directly used for recharging a thin‐film battery was also investigated. Experimental tests were performed in order to evaluate both the total efficiency of the wireless charger (i.e., the WREL link connected to the PMU) and the time necessary to recharge a THINERGY MEC201 battery. The obtained results demonstrate the feasibility of using the proposed WREL for implementing a battery charger; in particular, by providing an input power higher than 8 dBm, the time necessary to recharge the considered thin‐film battery is shorter than 38 min.

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Magnetically coupled resonant wireless power transmission: An artificial transmission line approach

Cited by 21 publications

References 11 publications

Two‐port network approach for a wireless power transfer link using a cascade of inductively coupled resonators

Two‐port network approach for a wireless power transfer link using a cascade of inductively coupled resonators

Modelling of wireless power transfer links based on capacitive coupling

Compact resonator on leather for nonradiative inductive power transfer and far‐field data links

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