Patent ID: 6577041
Filing Date: 2003-06-10
Classification: H03H

Abstract:
A converter for surface acoustic waves comprised of groups of prongs (2 to 23; 31 to 33) mounted on a piezoelectric substrate (1), said groups of prongs each containing at least two prongs, and collector electrodes (24; 25; 34; 35), whereby the arrangement of prongs, in its entirety is forming a structure tapering in the direction of one of the collector electrodes, characterized in that some of the groups of prongs (21; 23; 31; 33), which are designated as structured groups of prongs, are subdivided in the direction of the prongs in a number of subconverters (231; 232; 331; 332), and electrically connected in series, causing such groups to be different from the remaining groups of prongs with respect to the wave amplitude they excite.