This
matching circuit is created with capacitors and inductors.
For achieving an efficient RF-to-dc conversion efficiency
and avoiding unwanted power dissipation, a structure
of low-pass filter (LPF) and a capacitor is employed at
the output of the circuit in order to remove the fundamental
frequency signal and harmonics generated by
the nonlinear characteristic of the diode and smooth the
output dc voltage. According to the competition rules,the permitted
loads were 100 X and 1 kX and the participants
were allowed to choose a proper load between
these two values