Title:
エージングおよび温度の自動補償を有する基準オシレータ
Document Type and Number:
Japanese Patent JP4118142
Kind Code:
B2
Abstract:
A receiver uses an adaptive algorithm to tune a low-cost crystal oscillator according to a temperature compensation profile so as to produce a precision master reference frequency despite temperature, initial tolerance, and aging effects. An automatic frequency control system also tunes the crystal oscillator. The adaptive algorithm adjusts the temperature compensation profile for the crystal oscillator according to the adjustments made by the automatic frequency control should a received signal's quality factor exceed that associated with the temperature compensation profile.
Inventors:
Forrester, Timothy
Application Number:
JP2002590507A
Publication Date:
July 16, 2008
Filing Date:
May 14, 2002
Export Citation:
Assignee:
Kyocera Wireless Corp.
International Classes:
H04B1/26; H03J1/00; H03J7/04; H03L1/02; H04B1/16
Domestic Patent References:
JP10041786A | ||||
JP7288445A | ||||
JP2000295135A |
Foreign References:
WO2001061874A1 |
Attorney, Agent or Firm:
Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita
Takaaki Yasumura
Natsuki Morishita