title: K-cut quartz SAW resonators for stable frequency sources.
abstract: A new type of quartz SAW resonator for use as a stable frequency source has been developed. It was studied from the point of view of frequency instability caused by transient thermal behavior, and a new angle of cut named the K-cut for quartz SAW resonators was found. The static and dynamic frequency temperature coefficients are both zero at a room temperature. Taking into consideration the influence of the electrode-film thickness, the width modes of the waves, and power-flow angles, optimized resonators and oscillators were designed. These devices had frequency stability of 2x10(-10) for the mean time of 0.01 s.
authors.affiliation: Div. of Res. and Dev., Seiko Epson Corp., Nagano.
authors.forename: M
authors.initials: M
authors.lastname: Takagi
authors.forename: E
authors.initials: E
authors.lastname: Momosaki
authors.forename: M
authors.initials: M
authors.lastname: Yamakita
authors.forename: N
authors.initials: N
authors.lastname: Oura