Title :
High efficiency SAW convolver with suppressed parasitic reflection signals
Author :
Boritko, S.V. ; Mansfeld, G.D. ; Birykov, A.V. ; Kotelyansky, I.M.
Author_Institution :
Inst. of Radio Eng. & Electron., Acad. of Sci., Moscow, Russia
Abstract :
The results of the study of some technical solutions aimed at improving such parameters of acoustoelectric convolvers as convolution efficiency, suppression of parasitic signals, undesirable signal penetration from input to output are presented. The improvement of these characteristics has been achieved in this work with special positioning parametric (integrating) and ground electrodes. The highest efficiency is achieved in the case of planar-transverse picking up of the convolution signals arising due to nonlinear response in the conductivity of a thin InSb film placed between the integrating electrodes
Keywords :
electrodes; interdigital transducers; surface acoustic wave convolution; ultrasonic reflection; IDT; InSb; conductivity; convolution efficiency; ground electrodes; high efficiency SAW convolver; integrating electrodes; nonlinear response; parametric electrodes; planar-transverse signal pickup; reflection signal suppression; suppressed parasitic reflection signals; thin InSb film; undesirable signal penetration; Acoustic transducers; Acoustic waves; Conductive films; Conductivity; Convolution; Convolvers; Electrodes; Optical films; Reflection; Surface acoustic waves;
Conference_Titel :
Ultrasonics Symposium, 2000 IEEE
Conference_Location :
San Juan
Print_ISBN :
0-7803-6365-5
DOI :
10.1109/ULTSYM.2000.922502
