Electronic component operating with acoustic waves,申请号US19830472980-传众专利搜索

Electronic component operating with acoustic waves

申请公布号：US4484160(A)

申请号：US19830472980

申请日期：1983.03.08

申请公布日期：1984.11.20

申请人：

SIEMENS AKTIENGESELLSCHAFT

发明人：RIHA, GERD

分类号：H03H9/145;H03H3/08;H03H9/02;H03H9/44;H03H9/64;(IPC1-7):H03H9/64;H03H9/14

主分类号：H03H9/145

摘要：Electronic components which operate with acoustic waves are provided as interdigital structures and/or reflective arrangements. An oscillating displacement of the significant plurality of sub-groups is provided parallel to the principal axis of propagation in a weighted region, each sub-group having at least two successive real finger edges and, under certain conditions, virtual finger edges. A plurality of principal groups is provided and in a number which is equal to or greater than the time/bandwidth product. Each principal group has at least two real sub-groups and the respective degree of displacement of the finger edges of the individual sub-group corresponds to an additional oscillating phase modulation for the sequence of the sub-groups of the weighted region with the oscillation being such that the number of oscillations within a principal group is a whole number which is not greater than half the number of the sub-groups therein.