Patent ID: 8106726
Filing Date: 2012-01-31
Classification: H03H

Abstract:
1. A surface acoustic wave device comprising: a pair of reflectors; and an interdigital transducer arranged between the pair of reflectors, the interdigital transducer comprising a plurality of cross electrodes, a plurality of dummy electrodes, and a conductive plate, the cross electrodes and the dummy electrodes extending substantially parallel to one another and alternating with one another, the conductive plate including a non-linear edge, wherein each of the cross electrodes and the dummy electrodes extends in a substantially elongated shape from the non-linear edge of the conductive plate, wherein each of the cross electrodes is longer than each of the dummy electrodes, wherein each of the cross electrodes includes a first end facing away from the non-linear edge of the conductive plate, the first ends of the cross electrodes being substantially aligned with one another, wherein each of the dummy electrodes includes a second end facing away from the non-linear edge of the conductive plate, the second ends of the dummy electrodes being substantially aligned with one another, and, wherein each of the cross electrodes and the dummy electrodes includes a tail contacting the edge of the conductive plate, and wherein the tail width of the dummy electrode is different from the width of at least a portion of the cross electrode.