DocumentCode
965223
Title
Surface-acoustic-wave phase shifter using electrical depolarisation
Author
Gates, J.L. ; White, Richard M.
Author_Institution
University of California, Department of Electrical Engineering & Computer Sciences, Berkeley, USA
Volume
10
Issue
11
fYear
1974
Firstpage
231
Lastpage
232
Abstract
An electrically variable phase shifter employing surface acoustic waves is described that uses electrical depolarisation of a poled PZT ceramic. Phase shifting occurs in a depoling region in which an electric field of variable strength opposes the remanent ferroelectric moment, causing a change in the piezoelectric coupling and surface-wave velocity.
Keywords
acoustic surface wave devices; phase shifters; piezoelectric devices; acoustic surface wave devices; electrical depolarisation; phase shifters; piezoelectric devices;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19740176
Filename
4245136
Link To Document