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    • 1. 发明申请
    • Oven controlled crystal oscillator
    • 烤箱控制晶体振荡器
    • US20120161887A1
    • 2012-06-28
    • US12924252
    • 2010-09-23
    • Manabu ItoHiroyuki MitomeTakeo Oita
    • Manabu ItoHiroyuki MitomeTakeo Oita
    • H03L1/04
    • H03L1/04
    • The present invention relates to an oven controlled crystal oscillator that can obtain stable oscillation frequency by reducing a temperature change in an oscillation element. The oven controlled crystal oscillator comprises; a heat-conducting plate mounted on one surface of a circuit board, a crystal resonator mounted on a surface of the heat-conducting plate opposite to the surface of the circuit board, an oscillation element constituting an oscillation circuit together with the crystal resonator, and a thermistor that detects temperature of the crystal resonator, a heating resistance which heats the crystal resonator, and a temperature control element including at least a power transistor, to constitute a temperature control circuit together with the thermistor and the heating resistance. In the oven controlled crystal oscillator, two or more open areas communicating with the heat-conducting plate at least in the thickness direction thereof are formed on the periphery of the heat-conducting plate at positions point-symmetric with respect to the crystal resonator, and one or more of each of the power transistor and the heating resistance are arranged in the same number in all of the open areas.
    • 本发明涉及一种通过降低振荡元件温度变化可获得稳定的振荡频率的炉控晶体振荡器。 炉控晶体振荡器包括: 安装在电路板的一个表面上的导热板,安装在导电板的与电路板表面相对的表面上的晶体谐振器,与晶体谐振器一起构成振荡电路的振荡元件,以及 检测晶体谐振器的温度的热敏电阻,加热晶体谐振器的加热电阻和至少包括功率晶体管的温度控制元件,与热敏电阻和加热电阻一起构成温度控制电路。 在烤箱控制的晶体振荡器中,至少在厚度方向上与导热板连通的两个以上的开放区域相对于晶体谐振器形成在点对称的导热板的周围, 功率晶体管和加热电阻中的每一个中的一个或多个在所有开放区域中以相同的数量布置。
    • 2. 发明授权
    • Oven controlled crystal oscillator
    • 烤箱控制晶体振荡器
    • US08390390B2
    • 2013-03-05
    • US12924252
    • 2010-09-23
    • Manabu ItoHiroyuki MitomeTakeo Oita
    • Manabu ItoHiroyuki MitomeTakeo Oita
    • H03B5/32
    • H03L1/04
    • The present invention relates to an oven controlled crystal oscillator that can obtain stable oscillation frequency by reducing a temperature change in an oscillation element. The oven controlled crystal oscillator comprises; a heat-conducting plate mounted on one surface of a circuit board, a crystal resonator mounted on a surface of the heat-conducting plate opposite to the surface of the circuit board, an oscillation element constituting an oscillation circuit together with the crystal resonator, and a thermistor that detects temperature of the crystal resonator, a heating resistance which heats the crystal resonator, and a temperature control element including at least a power transistor, to constitute a temperature control circuit together with the thermistor and the heating resistance. In the oven controlled crystal oscillator, two or more open areas communicating with the heat-conducting plate at least in the thickness direction thereof are formed on the periphery of the heat-conducting plate at positions point-symmetric with respect to the crystal resonator, and one or more of each of the power transistor and the heating resistance are arranged in the same number in all of the open areas.
    • 本发明涉及一种通过降低振荡元件温度变化可获得稳定的振荡频率的炉控晶体振荡器。 炉控晶体振荡器包括: 安装在电路板的一个表面上的导热板,安装在导电板的与电路板表面相对的表面上的晶体谐振器,与晶体谐振器一起构成振荡电路的振荡元件,以及 检测晶体谐振器的温度的热敏电阻,加热晶体谐振器的加热电阻和至少包括功率晶体管的温度控制元件,与热敏电阻和加热电阻一起构成温度控制电路。 在烤箱控制的晶体振荡器中,至少在厚度方向上与导热板连通的两个以上的开放区域相对于晶体谐振器形成在点对称的导热板的周围, 功率晶体管和加热电阻中的每一个中的一个或多个在所有开放区域中以相同的数量布置。
    • 3. 发明申请
    • Temperature controlled crystal oscillator
    • 温度控制晶体振荡器
    • US20100289589A1
    • 2010-11-18
    • US12800154
    • 2010-05-10
    • Manabu ItoHiroyuki MitomeTakeo Oita
    • Manabu ItoHiroyuki MitomeTakeo Oita
    • H03L1/04
    • H03L1/04G05D23/1917G05D23/20H03L1/022
    • The present invention provides a temperature controlled oscillator capable of detecting the surrounding temperature at a high level of precision, and obtaining stable oscillating frequencies. The temperature controlled oscillator of the invention is provided with a circuit substrate having a crystal resonator, an oscillating circuit, and a temperature control circuit, arranged on one or both principal surfaces, and a container main body that accommodates the circuit substrate and has mount terminals on an outer bottom surface thereof. The temperature control circuit includes at least a first temperature sensor that detects an operating temperature of the crystal resonator, a second temperature sensor that detects a surrounding temperature of the container main body, and a heating resistor that applies heat to the crystal resonator, and lead wires extend from the circuit substrate and are connected electrically to the mount terminals. An insulation groove that passes through the circuit substrate in a thickness direction is formed between: a first lead wire closest to the second temperature sensor, and the second temperature sensor; and the heating resistor.
    • 本发明提供一种能够以高精度检测周围温度并获得稳定的振荡频率的温度控制振荡器。 本发明的温度控制振荡器设置有电路基板,具有设置在一个或两个主表面上的晶体谐振器,振荡电路和温度控制电路以及容纳电路基板并具有安装端子的容器主体 在其外底表面上。 温度控制电路至少包括检测晶体谐振器的工作温度的第一温度传感器,检测容器主体的周围温度的第二温度传感器和向晶体谐振器施加热量的加热电阻器, 电线从电路基板延伸并且与安装端子电连接。 在最靠近第二温度传感器的第一引线与第二温度传感器之间形成有沿厚度方向穿过电路基板的绝缘槽; 和加热电阻。
    • 4. 发明授权
    • Temperature controlled crystal oscillator
    • 温度控制晶体振荡器
    • US08149068B2
    • 2012-04-03
    • US12800154
    • 2010-05-10
    • Manabu ItoHiroyuki MitomeTakeo Oita
    • Manabu ItoHiroyuki MitomeTakeo Oita
    • H03B5/32H03B1/00
    • H03L1/04G05D23/1917G05D23/20H03L1/022
    • A temperature controlled oscillator is provided with a circuit substrate having a crystal resonator, an oscillating circuit, and a temperature control circuit, arranged on one or both principal surfaces, and a container main body that accommodates the circuit substrate and has mount terminals on an outer bottom surface thereof. The temperature control circuit includes at least a first temperature sensor that detects an operating temperature of the crystal resonator, a second temperature sensor that detects a surrounding temperature of the container main body, and a heating resistor that applies heat to the crystal resonator, and lead wires extend from the circuit substrate and are connected electrically to the mount terminals. An insulation groove that passes through the circuit substrate in a thickness direction is formed between: a first lead wire closest to the second temperature sensor, and the second temperature sensor; and the heating resistor.
    • 温度控制振荡器设置有电路基板,具有布置在一个或两个主表面上的晶体谐振器,振荡电路和温度控制电路以及容纳电路基板并且具有安装端子的外壳的容器主体 其底面。 温度控制电路至少包括检测晶体谐振器的工作温度的第一温度传感器,检测容器主体的周围温度的第二温度传感器和向晶体谐振器施加热量的加热电阻器, 电线从电路基板延伸并且与安装端子电连接。 在最靠近第二温度传感器的第一引线与第二温度传感器之间形成有沿厚度方向穿过电路基板的绝缘槽; 和加热电阻。
    • 6. 发明授权
    • Coplanar line based high frequency oscillator
    • 基于共面线的高频振荡器
    • US06909333B2
    • 2005-06-21
    • US10329861
    • 2002-12-26
    • Masayoshi AikawaTakayuki TanakaFumio AsamuraTakeo Oita
    • Masayoshi AikawaTakayuki TanakaFumio AsamuraTakeo Oita
    • H03B7/14H03B9/14H03B5/18
    • H03B9/147
    • A high frequency oscillator has a substrate made of, for example, a dielectric material, a resonator circuit disposed on one principal surface of the substrate and formed of a finite-length coplanar line having a signal line and a ground conductor arranged along the signal line on both sides thereof, a negative resistance element for connecting between the signal line and the ground conductor, and an output line routed on the other principal surface of the substrate and electromagnetically coupled to the resonator circuit through the substrate. A Gunn diode is preferably used for the negative resistance element, and is connected, for example, in a substantially central region of the signal line. The output line preferably forms a microstrip line structure together with the ground conductor.
    • 高频振荡器具有由例如介电材料制成的衬底,设置在衬底的一个主表面上的谐振器电路,并且由具有沿信号线布置的信号线和接地导体的有限长度的共面线构成 在其两侧具有用于连接信号线和接地导体之间的负电阻元件,以及在衬底的另一个主表面上布线的输出线,并通过衬底电磁耦合到谐振器电路。 耿氏二极管优选用于负电阻元件,并且例如连接在信号线的大致中心区域。 输出线优选地与接地导体一起形成微带线结构。
    • 7. 发明授权
    • Crystal oscillation circuit
    • 晶体振荡电路
    • US07352256B2
    • 2008-04-01
    • US11447695
    • 2006-06-06
    • Takeo Oita
    • Takeo Oita
    • H03B5/32
    • H03B5/32H03B5/36
    • A crystal oscillation circuit can correctly suppress the resonance of a B mode, thereby correctly excite the resonance of a C mode. Since the crystal oscillation circuit uses a quartz oscillator of an SC cut or an IC cut, the B mode (unnecessary mode) frequency is close to the C mode (main mode) frequency. Therefore, a C mode resonance circuit (main mode resonance circuit) for passing a C mode frequency and a trap circuit for suppressing the oscillation at an unnecessary mode frequency are provided in the feedback loop of the crystal oscillation circuit.
    • 晶体振荡电路可以正确地抑制B模式的谐振,从而正确地激发C模式的谐振。 由于晶体振荡电路使用SC切割或IC切割的石英振荡器,B模式(不必要模式)频率接近于C模式(主模式)频率。 因此,在晶体振荡电路的反馈回路中设置用于使C模式频率通过的C模式谐振电路(主模式谐振电路)和用于抑制不必要模式频率的振荡的陷波电路。
    • 8. 发明授权
    • Injection locked high frequency oscillator
    • 注射锁定高频振荡器
    • US07145404B2
    • 2006-12-05
    • US11046515
    • 2005-01-28
    • Masayoshi AikawaTakayuki TanakaFumio AsamuraTakeo Oita
    • Masayoshi AikawaTakayuki TanakaFumio AsamuraTakeo Oita
    • H03B7/12
    • H03B5/1852
    • A push-push high frequency oscillator comprises a pair of amplifiers for oscillation, a loop-shaped microstrip line for connecting inputs of the pair of amplifiers to each other and connecting outputs of the pair of amplifiers to each other, a slot line disposed between the inputs and the outputs of the pair of amplifiers for electromagnetically coupling with the microstrip line, a nonlinear circuit for enhancing the level of harmonic components in an applied synchronization signal, a coupler circuit for electromagnetically coupling the output of the nonlinear circuit to the microstrip line, and a filter circuit disposed at the output of the nonlinear circuit. The filter circuit filters harmonic components of the synchronization signal such that the two oscillation systems are injected with the same frequency components as the fundamental wave or frequency components twice as high as the fundamental wave to increase frequency stability.
    • 推挽式高频振荡器包括一对用于振荡的放大器,一个环形微带线,用于将一对放大器的输入彼此连接并将一对放大器的输出彼此连接,一条槽线设置在 用于与微带线电磁耦合的一对放大器的输入和输出,用于增强所施加的同步信号中的谐波分量的非线性电路,用于将非线性电路的输出电磁耦合到微带线的耦合器电路, 以及设置在非线性电路的输出端的滤波电路。 滤波器电路对同步信号的谐波分量进行滤波,使得两个振荡系统以与基波相同的基波或频率分量相同的频率分量被注入,以提高频率稳定性。