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    • 1. 发明授权
    • Temperature compensation oscillator and method for manufacturing the same
    • 温度补偿振荡器及其制造方法
    • US07728685B2
    • 2010-06-01
    • US12092772
    • 2006-11-06
    • Rikoku NakamuraTakuo FurukiTakashi Masuda
    • Rikoku NakamuraTakuo FurukiTakashi Masuda
    • H03L1/02H03B5/32
    • H03B5/04H03B5/368
    • A temperature detection circuit (18) detects temperature around an oscillation circuit (20) equipped with voltage variable capacitors (23, 24). According to its temperature detection signal, a temperature compensation circuit (30) produces a voltage signal as a temperature compensation signal. That voltage signal is supplied to the voltage variable capacitors (23, 24) in order to sustain oscillation frequency of the oscillation circuit (20) at a substantially constant level. When a switch element (1) is, turned on by a non-TCXO signal, both terminals of each voltage variable capacitor (23, 24) are brought to the same potential (ground potential). Consequently, each voltage variable capacitor has a predetermined capacitance and temperature compensation function is made ineffective. In that state, initial frequency regulation is performed under normal temperature.
    • 温度检测电路(18)检测配备有电压可变电容器(23,24)的振荡电路(20)周围的温度。 根据其温度检测信号,温度补偿电路(30)产生作为温度补偿信号的电压信号。 该电压信号被提供给电压可变电容器(23,24),以便将振荡电路(20)的振荡频率维持在基本上恒定的水平。 当开关元件(1)由非TCXO信号导通时,每个电压可变电容器(23,24)的两个端子都达到相同的电位(接地电位)。 因此,每个电压可变电容器具有预定的电容,并且使温度补偿功能无效。 在这种状态下,初始频率调节在常温下进行。
    • 2. 发明申请
    • TEMPERATURE COMPENSATION OSCILLATOR AND METHOD FOR MANUFACTURING THE SAME
    • 温度补偿振荡器及其制造方法
    • US20090115542A1
    • 2009-05-07
    • US12092772
    • 2006-11-06
    • Rikoku NakamuraTakuo FurukiTakashi Masuda
    • Rikoku NakamuraTakuo FurukiTakashi Masuda
    • H03L1/02
    • H03B5/04H03B5/368
    • A temperature detection circuit (18) detects temperature around an oscillation circuit (20) equipped with voltage variable capacitors (23, 24). According to its temperature detection signal, a temperature compensation circuit (30) produces a voltage signal as a temperature compensation signal. That voltage signal is supplied to the voltage variable capacitors (23, 24) in order to sustain oscillation frequency of the oscillation circuit (20) at a substantially constant level. When a switch element (1) is, turned on by a non-TCXO signal, both terminals of each voltage variable capacitor (23, 24) are brought to the same potential (ground potential). Consequently, each voltage variable capacitor has a predetermined capacitance and temperature compensation function is made ineffective. In that state, initial frequency regulation is performed under normal temperature.
    • 温度检测电路(18)检测配备有电压可变电容器(23,24)的振荡电路(20)周围的温度。 根据其温度检测信号,温度补偿电路(30)产生作为温度补偿信号的电压信号。 该电压信号被提供给电压可变电容器(23,24),以便将振荡电路(20)的振荡频率维持在基本上恒定的水平。 当开关元件(1)由非TCXO信号导通时,每个电压可变电容器(23,24)的两个端子都达到相同的电位(接地电位)。 因此,每个电压可变电容器具有预定的电容,并且使温度补偿功能无效。 在这种状态下,初始频率调节在常温下进行。