**3. Motivation**

The technological breakthroughs made possible due to WPT have been fostering an increased research activity, as well as the commercialization of numerous consumer products based on these concepts.

From a research and development perspective, there are two principal fields of investigation in WPT.

The first approach comprises the underlying mechanisms of power transfer, particularly by seeking knowledge about the possible scientific methods to wirelessly transmit energy from a point to another in space.

The second approach includes the development of individual circuit modules required in a functional wireless power transmission system. This includes circuit design considering the specifics of a particular WPT mechanism, ensuring that the module has the appropriate characteristics for that power delivery mechanism.
