Title :
New technique for wavefront distortion compensation of apodised interdigital transducers
Author :
Soluch, Waldemar
Author_Institution :
Tele & Radio Research Institute, Warsaw, Poland
Abstract :
It is shown that in an apodised SAW interdigital transducer the inactive areas, where periodic electrodes do not overlap, can be replaced by a continuous metallisation. In the case of YZ LiNbO3, wavefront distortion compensation is achieved when the ratio of the metallisation length to the inactive area length is equal to about 0.8.
Keywords :
lithium compounds; metallisation; surface acoustic wave devices; ultrasonic transducers; SAW interdigital transducer; YZ LiNbO3; apodised interdigital transducers; continuous metallisation; inactive area length; metallisation length; wavefront distortion compensation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19820686
