Over the last decades, dealing with batteries and wires has been a real challenge to industry. Many have been looking to alternatives such as non-radiative wireless power transmission (WPT) in order to give autonomy to devices. Non-radiative methods, in particular inductive coupling, has attracted a lot of attention because it is human safe and environmentally friendly. The drawback with this technology is the operating range which is very limited seeing it is a near field technique. In [1] it is presented a solution to improve the effective distance of an inductive coupling based WPT system using metamaterials (MTM). In the present work, a power amplifier (PA) was designed, fabricated and tested in order to improve previous performances. Simulations and experiments of the proposed PA are presented. The improvement of inductive power transmission (IPT) efficiency is supported by empirical evidences. This work is written integrally in the English language.