In this chapter CMT is used for the system analysis. It has several useful features, and the
most important one is that the wireless power transfer can be presented as a set of first order
linear differential equations which could be further analyzed by means of the control theory.
While, the application of CMT to the wireless power transfer system are based on several
assumptions; at the first, loss in system must be small enough to consider it as the perturbation, and at the second, the field profile can be calculated by the superposition of
each resonant object influence.
From the system analysis it is shown that series resonance is the necessary condition for the
efficient power transfer and this efficiency could be maximized by increasing the crosssectional
area of the antenna wire, coil radius, or conductivity of the wire material. At the
same time theoretical prediction of an optimal external capacitance by standard means are
demonstrated to be impossible. Also in this chapter optimal power transfer system’s
conditions are derived.