The output voltage of the receiver are also recorded at the
frequency of 4.2 MHz according to the FEM simulation, when
the lateral misalignment is 10 mm and the distance between the
transmitter and the receiver is changed from 2 cm to 20 cm. It
can be seen that there are large peak when the frequency is at
about 4.2 MHz, which are 25.95 V for 5 cm, 12.27 V for 10 cm,
6.425 V for 15 cm and 2.94 V for 20 cm. The appearance of these
peak values is, once again, because of the resonant condition,
which makes the transmitter coil and the receiver coil coupling
strongly.