The multiplier consists of schottky diodes which are chosen due to their low forward voltage for operation. This is important due to the very low power derived from the antenna. The circuit also uses ceramic capacitors. The value of capacitance controls the ripple voltage of the DC output. The relationship between ripple voltage and capacitance is that they are inversely proportional therefore to minimize ripple 100nF capacitors are chosen. Figure 4 shows the circuit design in Multisim.