Jordan and Hamburg LLP
Piezoelectric oscillator
There is provided a temperature compensated piezoelectric oscillator which excels in frequency stability and has a good electronic noise characteristic, and with which a circuit can be structured simply. An auxiliary oscillator unit 21 sharing a crystal substrate 2 with a main oscillator unit 11 outputting a set frequency f0 to an outside is used as a temperature detecting unit 32 detecting a temperature T for obtaining a compensation voltage ΔV in a temperature compensated piezoelectric oscillator (TCXO), and electrodes 13, 23 of the main oscillator unit 11 and the auxiliary oscillator unit 21 are provided separately on the crystal substrate 2. For example, a fundamental wave and an overtone are used or a thickness shear vibration and a contour shear vibration are used in the main oscillator unit 11 and the auxiliary oscillator unit 21, respectively.
Nihon Dempa Kogyo Co., Ltd.
H H H H H H H
H03L H03L H03H H03H H03H H03H H03L
inventional inventional inventional inventional inventional inventional inventional
Kazuo Shigetaka Shigenori Mitsuaki
Akaike Kaga Watanabe Koyama