Patent · US Expired

Surface acoustic wave gratings having selected reflectivity

US5406159A · kind A · utility

14Cited by
12References
6Claims
0Family size

Assignee

Inventor

Key dates

Filing dateNov 11, 1993
Grant dateApr 11, 1995
Priority date
Expiry dateNov 11, 2013

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH03H9/02637
  • WIPO fieldBasic communication processes
  • WIPO sectorElectrical engineering

Abstract

An improved surface acoustic wave grating structure that utilizes four electrodes per 3.lambda./2 or 5.lambda./2 transduction length of a reflector grating structure that produces a desired net internal distributed reflectivity in both magnitude and phase.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.