Crystal oscillator

Abstract

Abstract PURPOSE:To reduce the frequency variation, by increasing the strength against external mechanical force, through the use of thickness slide crystal plate of rectangular shape providing step at arbitrary one side so that the ratio of the side and the thickness of major plane is given for the size almost 65 or more. CONSTITUTION:Arbitrary one side of the crystal plate 401 of rectangular shape is made thicker than other parts, constituting it into the support 403, and the electrode film 402 is added to the crystal plate 401 in which the length l of the side of the crystal plate 401 satisfies (length of side l)/(thickness t) >=65, and the support 403 of the crystal plate 401 is fixed to the stem 404, and the electrode film 402 and the terminal 405 of the stem 404 are electrically connected, forming the crystal oscillator 406. Under the condition of l/t>=65, the kinetic energy dissipated via the support is very less and Q of the oscillator 406 is greater.

Inventors

• 👤 Eiji Konishi

Bibliographic Details