Title :
LiTaO3 lateral field resonators
Author :
Weinert, R.W. ; McAvoy, B.R. ; Driscoll, M.M. ; Moore, R.A. ; Tiersten, H.F.
Author_Institution :
Westinghouse STC, Pittsburgh, PA, USA
Abstract :
High overtone lateral field resonators, fabricated on -16.5° rotated Y-cut LiTaO3 plates, were examined for high- Q operation in the frequency range between 300 MHz and 1000 MHz. QF products of up to 5×1013 for unmounted plates and for hard-mounted plates have been measured. The QF product is higher than can be achieved with quartz, and the self-noise levels of these resonators compare favorably with those of the lowest-noise SAW (surface acoustic wave) resonators. The electrode design of these energy-trapped resonators is discussed
Keywords :
crystal resonators; lithium compounds; piezoelectric oscillations; 300 to 1000 MHz; LiTaO3; energy-trapped resonators; hard-mounted plates; high-Q operation; lateral field resonators; self-noise levels; unmounted plates; Acoustic propagation; Capacitance; Electrodes; Equations; Geometry; Impedance; Polarization; Resonance; Rough surfaces; Surface roughness;
Conference_Titel :
Ultrasonics Symposium, 1989. Proceedings., IEEE 1989
Conference_Location :
Montreal, Que.
DOI :
10.1109/ULTSYM.1989.67030
