抄録
Energy circulation efficiency of surface acoustic wave motor was investigated by changing the electrodes design. At basic design, the circulation power was about 30W when the driving power was 10W. When we used 24% wide aperture one direction IDTs for circulation electrodes, the circulation power was about 37W against 10W driving power. By using grating reflector for one directional IDT, the circulation power was improved up to 50W.
