公开(公告)号：US07845230B2

公开(公告)日：2010-12-07

申请号：US11989884

申请日：2006-08-02

Applicant: Takeo Oita ,  Takehito Ishii

Inventor： Takeo Oita ,  Takehito Ishii

IPC: G01H11/08

CPC classification number: G01N11/16 ,  G01N29/036 ,  G01N29/4427 ,  G01N2291/0255 ,  G01N2291/0256 ,  G01N2291/02809 ,  G01N2291/02818

Abstract: In a concentration sensor using a piezoelectric piece, for instance, a quartz piece in which the natural frequency is varied by adsorption of a sensing target, the object of the present invention is to make the concentration sensor applicable to various fluids to be measured different in viscosity while restricting consumption of the oscillation energy due to interelectrode capacitance, and to be able to cope with plural types of concentration sensors while using a common oscillation circuit.As a concrete means for solving the problem, an inductor is connected in parallel to the piezoelectric piece, and its inductance value is determined based on the relation between inductance values and oscillation loop gains in a gap between the inductance value Lmax canceling the interelectrode capacitance in a resonance frequency of the piezoelectric piece and the inductance value Lmin evaluated as the minimum value among the inductance values with which the piezoelectric piece can oscillate in a state of being immersed in a measuring fluid.

Abstract translation: 在使用压电片的浓度传感器中，例如通过感测对象物的吸附而使固有频率变化的石英片，本发明的目的在于使浓度传感器适用于各种被测量的液体， 同时限制由电极间电容引起的振荡能量的消耗，并且能够在使用共同的振荡电路的同时处理多种浓度传感器。 作为解决问题的具体手段，电感器与压电片并联连接，其电感值基于电感值Lmax和电感值Lmax之间的间隙中的振荡环路增益之间的关系确定，以消除电极间电容 压电片的谐振频率和电感值Lmin被评价为在浸入测量流体中的压电片可以摆动的电感值中的最小值。

公开(公告)号：US20100095750A1

公开(公告)日：2010-04-22

申请号：US11989884

申请日：2006-08-02

Applicant: Takeo Oita ,  Takehito Ishii

Inventor： Takeo Oita ,  Takehito Ishii

IPC: G01N29/036

CPC classification number: G01N11/16 ,  G01N29/036 ,  G01N29/4427 ,  G01N2291/0255 ,  G01N2291/0256 ,  G01N2291/02809 ,  G01N2291/02818

Abstract: In a concentration sensor using a piezoelectric piece, for instance, a quartz piece in which the natural frequency is varied by adsorption of a sensing target, the object of the present invention is to make the concentration sensor applicable to various fluids to be measured different in viscosity while restricting consumption of the oscillation energy due to interelectrode capacitance, and to be able to cope with plural types of concentration sensors while using a common oscillation circuit.As a concrete means for solving the problem, an inductor is connected in parallel to the piezoelectric piece, and its inductance value is determined based on the relation between inductance values and oscillation loop gains in a gap between the inductance value Lmax canceling the interelectrode capacitance in a resonance frequency of the piezoelectric piece and the inductance value Lmin evaluated as the minimum value among the inductance values with which the piezoelectric piece can oscillate in a state of being immersed in a measuring fluid.

Abstract translation: 在使用压电片的浓度传感器中，例如通过感测对象物的吸附而使固有频率变化的石英片，本发明的目的在于使浓度传感器适用于各种被测量的液体， 同时限制由电极间电容引起的振荡能量的消耗，并且能够在使用共同的振荡电路的同时处理多种浓度传感器。 作为解决问题的具体手段，电感器与压电片并联连接，其电感值基于电感值Lmax和电感值Lmax之间的间隙中的振荡环路增益之间的关系确定，以消除电极间电容 压电片的谐振频率和电感值Lmin被评价为在浸入测量流体中的压电片可以摆动的电感值中的最小值。

公开(公告)号：US20120161887A1

公开(公告)日：2012-06-28

申请号：US12924252

申请日：2010-09-23

Applicant: Manabu Ito ,  Hiroyuki Mitome ,  Takeo Oita

Inventor： Manabu Ito ,  Hiroyuki Mitome ,  Takeo Oita

IPC: H03L1/04

CPC classification number: H03L1/04

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07019596B2

公开(公告)日：2006-03-28

申请号：US10101008

申请日：2002-03-19

Applicant: Takeo Oita ,  Yuichi Sato

Inventor： Takeo Oita ,  Yuichi Sato

IPC: H03B1/00

CPC classification number: H03B5/36

Abstract: A high-frequency oscillator that enables a plurality of frequency signals to be output. The high-frequency oscillator outputs in parallel a plurality of frequency components from within a frequency spectrum of an oscillation output of a crystal oscillator, selects one or a plurality of frequency components from among the plurality of frequency components, and outputs the selected components as high-frequency outputs. In this way, a plurality of high-frequency signals can be obtained from one crystal oscillator.

Abstract translation: 能够输出多个频率信号的高频振荡器。 高频振荡器从晶体振荡器的振荡输出的频谱内并行输出多个频率分量，从多个频率分量中选择一个或多个频率分量，并将所选择的分量输出为高 频率输出。 以这种方式，可以从一个晶体振荡器获得多个高频信号。

公开(公告)号：US06909333B2

公开(公告)日：2005-06-21

申请号：US10329861

申请日：2002-12-26

Applicant: Masayoshi Aikawa ,  Takayuki Tanaka ,  Fumio Asamura ,  Takeo Oita

Inventor： Masayoshi Aikawa ,  Takayuki Tanaka ,  Fumio Asamura ,  Takeo Oita

IPC: H03B7/14 ,  H03B9/14 ,  H03B5/18

CPC classification number: H03B9/147

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07352256B2

公开(公告)日：2008-04-01

申请号：US11447695

申请日：2006-06-06

Applicant: Takeo Oita

Inventor： Takeo Oita

IPC: H03B5/32

CPC classification number: H03B5/32 ,  H03B5/36

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07145404B2

公开(公告)日：2006-12-05

申请号：US11046515

申请日：2005-01-28

Applicant: Masayoshi Aikawa ,  Takayuki Tanaka ,  Fumio Asamura ,  Takeo Oita

Inventor： Masayoshi Aikawa ,  Takayuki Tanaka ,  Fumio Asamura ,  Takeo Oita

IPC: H03B7/12

CPC classification number: H03B5/1852

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07088032B2

公开(公告)日：2006-08-08

申请号：US11154289

申请日：2005-06-16

Applicant: Takeo Oita ,  Minoru Fukuda

Inventor： Takeo Oita ,  Minoru Fukuda

IPC: H01L41/08

CPC classification number: H03B5/32 ,  H03H9/02102 ,  H03H9/0528 ,  H03H9/0542 ,  H03H9/0552 ,  H03H9/1014 ,  H03L1/04

Abstract: A crystal oscillator of the present invention includes: a substrate provided in a package; a heating device arranged as surrounding an internal area of the substrate on at least one of the surfaces of the substrate; a crystal resonator or a crystal element and an oscillation circuit unit provided in an area enclosed by the heating device; a thermosensitive element which detects a temperature in an area enclosed by the heating device; and a control unit for controlling a heating value applied to the heating device based on a detection result of the thermosensitive element.

Abstract translation: 本发明的晶体振荡器包括：设置在封装中的衬底; 加热装置，其布置成在所述基板的至少一个表面上包围所述基板的内部区域; 设置在由加热装置封闭的区域中的晶体谐振器或晶体元件和振荡电路单元; 热敏元件，其检测由所述加热装置包围的区域中的温度; 以及控制单元，用于基于热敏元件的检测结果控制施加到加热装置的加热值。

公开(公告)号：US20050184818A1

公开(公告)日：2005-08-25

申请号：US11046542

申请日：2005-01-28

Applicant: Masayoshi Aikawa ,  Takayuki Tanaka ,  Fumio Asamura ,  Takeo Oita

Inventor： Masayoshi Aikawa ,  Takayuki Tanaka ,  Fumio Asamura ,  Takeo Oita

IPC: H01P7/10 ,  H01P5/08 ,  H03B5/18 ,  H03B19/18 ,  H03L7/24

CPC classification number: H03B5/1894

Abstract: A second-harmonic oscillator based on push-push oscillation has a pair of amplifiers for oscillation, a high frequency transmission line for connecting inputs of the pair of amplifiers to each other and connecting outputs of the pair of amplifiers to each other, and an electromagnetic coupling member disposed between the inputs and outputs of the pair of amplifiers such that it is electromagnetically coupled to the high frequency transmission line. The electromagnetic coupling member includes at least a dielectric resonator. The pair of amplifiers, high frequency transmission line, and electromagnetic coupling member form two oscillation loops which oscillate in opposite phases to each other with respect to a fundamental wave of oscillation for generating a second harmonic of the fundamental wave.

Abstract translation: 基于推挽振荡的二次谐波振荡器具有用于振荡的一对放大器，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的高频传输线，以及电磁 耦合构件设置在所述一对放大器的输入和输出之间，使得其与高频传输线电磁耦合。 电磁耦合构件至少包括介质谐振器。 一对放大器，高频传输线和电磁耦合构件形成两个振荡回路，其相对于用于产生基波的二次谐波的基波振荡彼此相反地振荡。

公开(公告)号：US06798305B2

公开(公告)日：2004-09-28

申请号：US10293150

申请日：2002-11-13

Applicant: Masayoshi Aikawa ,  Takayuki Tanaka ,  Fumio Asamura ,  Takeo Oita

Inventor： Masayoshi Aikawa ,  Takayuki Tanaka ,  Fumio Asamura ,  Takeo Oita

IPC: H03B712

CPC classification number: H03B5/1852

Abstract: A high frequency oscillator suitable for implementing a push-push oscillator, a push-pull oscillator, and a four-phase push-push oscillator comprises a transmission line resonator, two active devices for oscillation connected to two resonant wave points, respectively, located on the transmission line resonator in an opposite phase relationship to each other, and a combiner line connected to an electric symmetric point of the transmission line resonator. The respective active devices constitute two oscillation systems, respectively, which share the transmission line resonator as a high frequency resonator. The combiner line combines outputs from the respective oscillation systems to generate a high frequency output.

Abstract translation: 适用于实施推挽振荡器，推挽振荡器和四相推挽振荡器的高频振荡器包括：传输线谐振器，分别连接到两个谐振波点的两个有源器件，分别位于 传输线谐振器彼此相反的相位关系，以及连接到传输线谐振器的电对称点的组合器线。 相应的有源器件分别构成共享作为高频谐振器的传输线谐振器的两个振荡系统。 组合器线组合来自各个振荡系统的输出以产生高频输出。