ABSTRACT
This chapter provides a general overview of magnetic resonant wireless power transfer systems based on network models. The power transferred to a single and multiple receivers loads at resonance is derived and explained. It is also shown the importance of using appropriate matching networks and how to design the oscillator and the load rectifier. Efficient energy transfer is nowadays becoming an essential topic: it allows saving of economical resources, quality-of-life improvement, and pollution reduction, to name just a few issues. In particular, energy transfer is often realized by using electromagnetic power, which can be transmitted either along a guiding medium, or without a supporting medium. Adifferent mechanism for transmitting electromagnetic energy is by using radiative fields and antennas. However, radiated energy is spread over radiation angles, and its attenuation goes with an inverse quadratic law with respect to distance, even in the case of vacuum.
