Surface ultrasonic wave delay lines with dispersive time-frequency characteristics have been made using interdigital electrode arrays with variable element spacings on LiNbO3. The devices operate at 60 MHz with low insertion loss and a 3-dB bandwidth over 25 percent. A model has been devised which accurately predicts the phase and amplitude characteristics of the devices. "Weighting" the array to improve the phase characteristic is described.
Published in:
Proceedings of the IEEE
(Volume:57
,
Issue:
6
)
Date of Publication:
June 1969
- Page(s):
-
1211
-
1213
- ISSN :
-
0018-9219
- Digital Object Identifier :
-
10.1109/PROC.1969.7202
- Product Type:
-
Journals & Magazines
- Date of Current Version :
-
28 June 2005
- Issue Date :
-
June 1969
- Sponsored by :
-
IEEE