Figure 9 shows the investigation result of 4 MRE layoutsfor cam target that has longer tooth and slot on thepattern. In this pattern, the clearance between signal(Vd) and threshold becomes small when sensor facesthe middle of tooth or slot. Hence, to increase signalamplitude, we propose MRE A & MRE D locates with theoffset from MRE B and MRE B as shown in Figure 9.This layout improves signal amplitude drastically, forexample, signal (Vd) of new generation sensor at 2.5mmair gap can have same amplitude of conventional one at1.0mm air gap.