OSCILLATOR

To precisely control temperature of crystal resonator.SOLUTION: An oscillator includes: a first resonator 11 for generating a first oscillation signal; a second resonator 12 for generating a second oscillation signal, having a different frequency-temperature characteristic from that of the first res...

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Bibliographische Detailangaben
Hauptverfasser:	AKAIKE KAZUO, MOTOMIYA KOSHIRO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BASIC ELECTRONIC CIRCUITRY ELECTRICITY GENERATION OF NOISE BY SUCH CIRCUITS GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING,BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN ANON-SWITCHING MANNER
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Beschreibung
Zusammenfassung:	To precisely control temperature of crystal resonator.SOLUTION: An oscillator includes: a first resonator 11 for generating a first oscillation signal; a second resonator 12 for generating a second oscillation signal, having a different frequency-temperature characteristic from that of the first resonator 11; a temperature compensation circuit 16 for temperature compensation according to a frequency difference between the frequency of the first oscillation signal and the frequency of the second oscillation signal; a heater 3 for heating the first resonator 11 and the second resonator 12; and a heating control part 152 for controlling heat generated by the heater 3 based on the frequency difference.SELECTED DRAWING: Figure 1 【課題】水晶振動子の温度を精度よく制御する。【解決手段】第１発振信号を発生する第１振動子１１と、第１振動子１１と異なる周波数温度特性を有し、第２発振信号を発生する第２振動子１２と、第１発振信号の周波数と第２発振信号の周波数との周波数差に応じて温度補償をする温度補償回路１６と、第１振動子１１及び第２振動子１２を加熱するためのヒーター３と、周波数差に基づいてヒーター３が発する熱量を制御する加熱制御部１５２と、を有する。【選択図】図１