Electronic component operating with acoustic waves
US4484160A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 8, 1983 |
| Grant date | Nov 20, 1984 |
| Priority date | — |
| Expiry date | Mar 8, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/02716
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.