Title :
Frequency-controlled beam steering of surface acoustic waves using a stepped transducer array
Author :
De La Rue, Richard M. ; Stewart, Craig ; Wilkinson, C.D.W. ; Williamson, I.R.
Author_Institution :
University of Glasgow, Department of Electronics & Electrical Engineering, Glasgow, UK
Abstract :
Using stepped arrays of transducers, the direction of propagation of surface acoustic waves can be controlled by varying the input frequency. This effect has applications in maintaining the optimum Bragg angle in acousto-optic devices for integrated optics. The measured beam-steering angle for a given frequency change follows the theory of Pinnow, where anisotropy effects are taken into account.
Keywords :
acoustic surface wave devices; acoustic wave propagation; acousto-optical devices; frequency control; ultrasonic transducers; Pin now theory; acoustic surface wave devices; acousto optical devices; anisotropy effects; frequency control; frequency controlled beam steering; integrated optics; optimum Bragg angle; stepped transducer array; ultrasonic transducers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19730234
