Title :
Temperature effects in reflective surface-acoustic-wave delay lines
Author :
Meyer, P.C. ; Schulz, M.B.
Author_Institution :
Raytheon Research Division, Waltham, USA
Abstract :
In addition to variation of delay time with temperature change, reflective surface-acoustic-wave delay lines may suffer signal-amplitude variation with temperature change. This problem occurs because of the anisotropy of the surface-wave velocity and the thermal expansion in the piezoelectric materials used for these devices. Experimental results are presented as well as appropriate design considerations for devices that must be operated at an elevated temperature.
Keywords :
acoustic surface wave devices; high-temperature phenomena and effects; losses; thermal expansion; ultrasonic delay lines; acoustic surface wave devices; high temperature phenomena and effects; losses; piezoelectric materials; thermal expansion; ultrasonic delay lines;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19730385
