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    • 5. 发明授权
    • Voltage controlled oscillator
    • 压控振荡器
    • US08283989B2
    • 2012-10-09
    • US12924468
    • 2010-09-28
    • Tatsunori OnzukaJunichiro YamakawaToshimasa TsudaKenji KawahataHiroshi Hoshigami
    • Tatsunori OnzukaJunichiro YamakawaToshimasa TsudaKenji KawahataHiroshi Hoshigami
    • H03B5/12
    • H03B5/1243H03B5/1203H03B2200/0008
    • There is provided a voltage controlled oscillator using a Colpitts circuit capable of suppressing deterioration (decrease) in variable range (adjustable range) of an output frequency due to the influence of an inductance component on a conductive line, which connects a connection point between two capacitors of a feedback part and an emitter of a transistor. In a VCO using a Colpitts circuit, with respect to capacitors 22, 23 of a feedback part 2, a first feedback capacitance element (capacitor) 22 is disposed so as to directly couple a terminal for base (connection part 7) and a terminal for emitter on a base substrate 5, to which a terminal part 8 (T1) extending from a base of a transistor 21 and a terminal part 8 (T2) extending from an emitter of the transistor 21 are fitted, respectively, and a second feedback capacitance element (capacitor) 23 is disposed so as to directly couple the terminal for emitter and the terminal for grounding (ground electrode 51).
    • 提供了一种压控振荡器,其使用Colpitts电路,其能够抑制由于导电线上的电感分量的影响而导致的输出频率的可变范围(可调节范围)的变化(减小),连接两个电容器之间的连接点 的晶体管的反馈部分和发射极。 在使用Colpitts电路的VCO中,相对于反馈部2的电容器22,23,设置第一反馈电容元件(电容器)22,以直接将基座(连接部7)的端子和用于 分别从晶体管21的基极延伸的端子部8(T1)和从晶体管21的发射极延伸的端子部8(T2)分别嵌合在基极基板5上的发射极和第二反馈电容 元件(电容器)23被配置为直接耦合发射极端子和接地端子(接地电极51)。
    • 6. 发明申请
    • Voltage controlled oscillator
    • 压控振荡器
    • US20110080222A1
    • 2011-04-07
    • US12924468
    • 2010-09-28
    • Tatsunori OnzukaJunichiro YamakawaToshimasa TsudaKenji KawahataHiroshi Hoshigami
    • Tatsunori OnzukaJunichiro YamakawaToshimasa TsudaKenji KawahataHiroshi Hoshigami
    • H03B5/12
    • H03B5/1243H03B5/1203H03B2200/0008
    • There is provided a voltage controlled oscillator using a Colpitts circuit capable of suppressing deterioration (decrease) in variable range (adjustable range) of an output frequency due to the influence of an inductance component on a conductive line, which connects a connection point between two capacitors of a feedback part and an emitter of a transistor. In a VCO using a Colpitts circuit, with respect to capacitors 22, 23 of a feedback part 2, a first feedback capacitance element (capacitor) 22 is disposed so as to directly couple a terminal for base (connection part 7) and a terminal for emitter on a base substrate 5, to which a terminal part 8 (T1) extending from a base of a transistor 21 and a terminal part 8 (T2) extending from an emitter of the transistor 21 are fitted, respectively, and a second feedback capacitance element (capacitor) 23 is disposed so as to directly couple the terminal for emitter and the terminal for grounding (ground electrode 51).
    • 提供了一种压控振荡器,其使用Colpitts电路,其能够抑制由于导电线上的电感分量的影响而导致的输出频率的可变范围(可调节范围)的变化(减小),连接两个电容器之间的连接点 的晶体管的反馈部分和发射极。 在使用Colpitts电路的VCO中,相对于反馈部2的电容器22,23,设置第一反馈电容元件(电容器)22,以直接将基座(连接部7)的端子和用于 分别从晶体管21的基极延伸的端子部8(T1)和从晶体管21的发射极延伸的端子部8(T2)分别嵌合在基极基板5上的发射极和第二反馈电容 元件(电容器)23被配置为直接耦合发射极端子和接地端子(接地电极51)。
    • 7. 发明授权
    • Low-noise voltage controlled oscillator
    • 低噪声压控振荡器
    • US08111110B2
    • 2012-02-07
    • US12585685
    • 2009-09-22
    • Junichiro YamakawaKazuo AkaikeTakashi NakaokaMikio TakanoYuichiro Arai
    • Junichiro YamakawaKazuo AkaikeTakashi NakaokaMikio TakanoYuichiro Arai
    • H03B5/08
    • H03B5/1231H03B5/1203H03B5/1243H03B5/1293H03B5/1296
    • A low-noise voltage controlled oscillator is provided, to improve a phase noise characteristic and widen a frequency variable range. The low-noise voltage controlled oscillator is configured so that an oscillation element and a capacitor 2 are connected in series between a collector C and an emitter E of a transistor 1, capacitors 3 and 4 are connected in series between the collector C and the emitter E, an electrical potential between the capacitors 3 and 4 is applied to a base B of the transistor 1; a one-port circuit 6 is provided between the collector C and the capacitor 4; and a capacitor for correction 5 is connected in parallel with the capacitors 3 and 4. The one-port circuit 6 includes a tuned circuit provided with a variable capacitor adjusting a capacity thereof smaller and an inductor adjusting a value of inductance larger so as to set a value of impedance relatively large.
    • 提供了一个低噪声压控振荡器,以提高相位噪声特性并扩大频率可变范围。 低噪声压控振荡器被配置为使得振荡元件和电容器2串联连接在晶体管1的集电极C和发射极E之间,电容器3和4串联连接在集电极C和发射极之间 E,电容器3和4之间的电位被施加到晶体管1的基极B; 在集电极C和电容器4之间设置单端口电路6; 并且用于校正的电容器5与电容器3和4并联连接。单端口电路6包括调节电路,该调谐电路设置有调节其容量较小的可变电容器,以及调节电感值较大的电感器,以便设置 阻抗值相对较大。
    • 8. 发明申请
    • Low-noise voltage controlled oscillator
    • 低噪声压控振荡器
    • US20100073101A1
    • 2010-03-25
    • US12585685
    • 2009-09-22
    • Junichiro YamakawaKazuo AkaikeTakashi NakaokaMikio TakanoYuichiro Arai
    • Junichiro YamakawaKazuo AkaikeTakashi NakaokaMikio TakanoYuichiro Arai
    • H03B5/12
    • H03B5/1231H03B5/1203H03B5/1243H03B5/1293H03B5/1296
    • A low-noise voltage controlled oscillator is provided, to improve a phase noise characteristic and widen a frequency variable range. The low-noise voltage controlled oscillator is configured so that an oscillation element and a capacitor 2 are connected in series between a collector C and an emitter E of a transistor 1, capacitors 3 and 4 are connected in series between the collector C and the emitter E, an electrical potential between the capacitors 3 and 4 is applied to a base B of the transistor 1; a one-port circuit 6 is provided between the collector C and the capacitor 4; and a capacitor for correction 5 is connected in parallel with the capacitors 3 and 4. The one-port circuit 6 includes a tuned circuit provided with a variable capacitor adjusting a capacity thereof smaller and an inductor adjusting a value of inductance larger so as to set a value of impedance relatively large.
    • 提供了一个低噪声压控振荡器,以提高相位噪声特性并扩大频率可变范围。 低噪声压控振荡器被配置为使得振荡元件和电容器2串联连接在晶体管1的集电极C和发射极E之间,电容器3和4串联连接在集电极C和发射极之间 E,电容器3和4之间的电位被施加到晶体管1的基极B; 在集电极C和电容器4之间设置单端口电路6; 并且用于校正的电容器5与电容器3和4并联连接。单端口电路6包括调节电路,该调谐电路设置有调节其容量较小的可变电容器,以及调节电感值较大的电感器,以便设置 阻抗值相对较大。
    • 9. 发明授权
    • Oscillation module
    • 振荡模块
    • US07924106B2
    • 2011-04-12
    • US12318256
    • 2008-12-23
    • Naoto InouchiKazuo AkaikeJunichiro YamakawaMasazumi Kubota
    • Naoto InouchiKazuo AkaikeJunichiro YamakawaMasazumi Kubota
    • H03B9/14
    • H03B1/04
    • To provide an oscillation module which is able to improve an input level by passing signals in a main signal band while removing near noise and far noise.An oscillation module is provided with an OCXO, an amplifier, and a noise elimination filter. The noise elimination filter includes: a BPF passing a signal in the main signal band and eliminating far noise with respect to the main signal band; an L-BEF eliminating near noise in a low frequency band with respect to the main signal band; and an H-BEF eliminating near noise in a high frequency band with respect to the main signal band. Each filter is configured with a crystal filter.
    • 提供振荡模块,其能够通过在主信号频带中传递信号来改善输入电平,同时消除接近的噪声和远的噪声。 振荡模块配有OCXO,放大器和噪声消除滤波器。 噪声消除滤波器包括:BPF通过主信号频带中的信号并消除相对于主信号频带的远的噪声; 相对于主信号频带,在低频带中消除近邻噪声的L-BEF; 以及相对于主信号频带在高频带中消除接近噪声的H-BEF。 每个滤波器都配置了晶体滤波器。
    • 10. 发明申请
    • PIEZOELECTRIC SENSOR AND SENSING INSTRUMENT
    • 压电传感器和感应仪器
    • US20090288488A1
    • 2009-11-26
    • US12454518
    • 2009-05-19
    • Junichiro YamakawaKazuo AkaikeTakeru MutohHiroyuki Kukita
    • Junichiro YamakawaKazuo AkaikeTakeru MutohHiroyuki Kukita
    • G01N29/00H01L41/047
    • H01L41/1132H01L41/042
    • To provide a piezoelectric sensor in which a first electrode for measurement and a second electrode for reference are provided apart from each other on one surface side of a piezoelectric piece and a common electrode is provided on the other surface side so as to face the first and second electrodes, and which achieves highly reliable oscillation by reducing the influence of electrical coupling between the first electrode and the second electrode. A piezoelectric sensor includes: a first electrode for measurement and a second electrode for reference provided apart from each other on one surface side of a piezoelectric piece; a common electrode provided on the other surface side of the piezoelectric piece commonly for the first electrode and the second electrode to face the first electrode and the second electrode; and an adsorption layer formed on an area, of the common electrode, to which the first electrode is projected, to adsorb a substance to be sensed. This structure prevents the first electrode and the second electrode from being electrically coupled due to the impedance of the sample fluid.
    • 提供一种压电传感器,其中第一测量用电极和第二参考用电极在压电片的一个表面侧彼此分开设置,并且公共电极设置在另一个表面侧上以面向第一和 第二电极,并且通过减少第一电极和第二电极之间的电耦合的影响来实现高度可靠的振荡。 一种压电传感器包括:用于测量的第一电极和用于在压电片的一个表面侧彼此分开的第二参考电极; 在所述压电片的另一个表面侧上设置的公共电极,所述公共电极通常用于所述第一电极,所述第二电极与所述第一电极和所述第二电极相对; 以及形成在所述公共电极的与所述第一电极投影的区域上的吸附层,以吸附待感测的物质。 这种结构防止了第一电极和第二电极由于样品流体的阻抗而电耦合。