Scheduled System Maintenance:
On Monday, April 27th, IEEE Xplore will undergo scheduled maintenance from 1:00 PM - 3:00 PM ET (17:00 - 19:00 UTC). No interruption in service is anticipated.
By Topic

New designs for resonators and filters using lithium tantalate

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

8 Author(s)

The results of investigations made into improving the characteristics of fundamental and overtone mode resonators are presented. Using the stroboscopic topography technique, it is shown that the rather poor Q factors of the fundamental thickness shear resonators are due to non-stationary plate modes coupled to the fast shear. The use of bar shaped thickness shear resonators permits higher Q factors to be obtained. To obtain overtone resonators with a zero first order temperature coefficient, (TC) doubly rotated cuts, the compensation of the TC of the overtones of the X cut by a layer of silica, and the use of the lateral field excitation are considered. This latter type of resonator is very well adapted to lithium tantalate and permits, using the plano-convex geometry, very large Q factors for overtones with very elevated ranks to be obtained

Published in:

Frequency Control, 1990., Proceedings of the 44th Annual Symposium on

Date of Conference:

23-25 May 1990