Providing energy without wires has undoubtedly achieved a tremendous interest in the last period. In many different environments, such as industrial plants, smart ambients and transportations, different needs are emerging with respect to either the operating frequency or the power level involved or the EM mechanism to be exploited, namely far-field or nearfield. This full-day workshop is aimed at providing an overview of the most recent results in this area.

In the first part theoretical aspects for the circuit-level and system-level design of a re-charging system are analysed in the near-field and both capacitive and inductive coupling are considered. Then a walk through all the aspects of designing, realising and testing rectifying antennas (rectennas) will be followed to exploit far-field for recharging.

In the second part a number of application-driven systems adopting 3D structures for recharging mobile and implantable devices are presented. From the technological point of view, Inkjet printing and 3D printing are analysed as low cost, high performance technologies for RF electronics. Furthermore, additive manufacturing is considered as a platform for heterogeneous integration of complex circuit structures, including metals, dielectrics and semiconductors and packages. 3D printed microwave antenna array structures and lenses, with application to wireless power transfer and energy harvesting will be presented and implanted electronic systems will be addressed.

Finally signals solutions for minimising the power needed for sensor operations are considered and proofs-of-concept are provided. Lecturers presentations will be alternated with periods of open discussions to engage the audience and to discuss next exploitable research areas in this field. This workshop is supported by the COST action IC1301 WiPE "Wireless Power transmission for sustainable Electronics".