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Title:
TEMPERATURE COMPENSATION CRYSTAL OSCILLATOR
Document Type and Number:
Japanese Patent JP3921362
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide a temperature compensation crystal oscillator that can maintain a phase noise characteristic in good condition.
SOLUTION: In the temperature compensation crystal oscillator where a voltage variable capacitive element is inserted to an oscillation closed loop of a crystal oscillator having a frequency temperature characteristic and applying a temperature compensation voltage is applied to the voltage variable capacitive element compensates the frequency temperature characteristic, the temperature compensation voltage is applied to the anode of the voltage variable capacitive element and a fixed voltage to block conduction is applied to the cathode of the voltage variable capacitive element.


Inventors:
Kubo Kubo
Fumio Asamura
Application Number:
JP2001229827A
Publication Date:
May 30, 2007
Filing Date:
July 30, 2001
Export Citation:
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Assignee:
Nippon Denpa Industry Co., Ltd.
International Classes:
H03B5/32; H03L1/02; (IPC1-7): H03B5/32
Domestic Patent References:
JP62161411U
JP8186442A
JP10126154A
JP9205326A
JP3090114U
JP57152203A
JP7043003U