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In this paper the feasibility of achieving a coupling-independent performance for a Wireless Power Transfer Link based on resonant inductive coupling is investigated. Theoretical and experimental results demonstrating that a coupling-independent regime can be realized by an appropriate selection of the operating frequency of a strongly-coupled synchronous WPT link are reported and discussed.
Recently (2012), for the first time, the Italian law established that the “absorption values of the electromagnetic field due to buildings” have to be considered in the estimated assessments carried out before installing any fixed telecommunications apparatus. This important norm may cause several effects in the application to the reality so Italian Ministry of Environment and Protection of Land and...
In magnetic resonant wireless power transfer the free-space part of the link is realized by using coupled inductances and by adding appropriate series capacitances (so as to obtain resonance). By introducing appropriate reactive matching networks, we remain with a two port lossy network. In this work it is shown that, by taking as reference impedance the image impedances of the two port lossy network,...
We introduce a planar substrate-based resonator suitable for magnetic resonant wireless power transfer (WPT) applications. Its advantages are: flatness, limited space occupation, ease of manufacture, low cost and a relatively high Q. Resonators for WPT should operate by using magnetic field coupling and by avoiding external electric fields. In the proposed structure, the electric field is primarily...
In this paper, a ranging technique based on inductive coupling between resonating coils is presented. The theoretical background is discussed, and a practical implementation is illustrated and experimentally validated. It is shown that the proposed technique, implemented using off the shelf components, features both a good range and a fair resilience to multipath, being suitable for indoor positioning...
On one hand resonant Wireless Power Transfer (WPT) can be realized by using resonant coils coupled via their magnetic fields; on the other hand Near-Field Magnetic Communications (NFMC) are currently receiving considerable attention for several possible applications. We present a novel structure that can be used for both WPT and NFMC; this structure shows a dual band transmission channel allowing...
Resonant Wireless Power Transfer (WPT) can be realized by using coils coupled via their magnetic fields; such systems can exhange energy in the mid-range. Information can also be exchanged via Near-Field Magnetic Communications (NFMC), which is currently receiving considerable attention for several possible applications. We present a structure that can be used for realizing both WPT and NFMC; this...
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