公开(公告)号：US5170136A

公开(公告)日：1992-12-08

申请号：US754586

申请日：1991-09-04

申请人： Tsutomu Yamakawa ,  Kuichi Kubo ,  Hiroshi Yoshida

发明人： Tsutomu Yamakawa ,  Kuichi Kubo ,  Hiroshi Yoshida

IPC分类号： H03B5/32 ,  H03L1/02

CPC分类号： H03L1/026

摘要： A digital temperture compensation oscillator for digitally compensating a variation in oscillation frequency due to temperatures, by applying a compensation voltage to a voltage controlled oscillator, comprises temperature detection means, A/D conversion means, memory means, operation means and D/A conversion means. The temperature detection means detects temperatures when the voltage controlled oscillator is operated, and generates a temperature signal. The A/D conversion means receives the temperature signal, digitizes the temperature signal, and generates digital temperature data. The memory means stores compensation data corresponding to the compensation voltage as difference data at corresponding addresses. The difference data includes, when N-stage level difference data (N=a positive integer) are utilized, predetermined reference values of 0th difference data to (N-1)-th difference data of the compensation data and all N-th difference data. The operation means receives the digital temperature data and the difference data, and generates the compensation data on the basis of the difference data in response to the digital temperature data. The D/A conversion means receives the compensation data, converts the compensation data into an analog compensation voltage, and supplies the analog compensation voltage to the voltage controlled oscillator.

摘要翻译： 一种数字温度补偿振荡器，其通过向压控振荡器施加补偿电压来对温度造成的振荡频率的变化进行数字补偿，包括温度检测装置，A / D转换装置，存储装置，操作装置和D / A转换装置 。 温度检测装置检测压控振荡器工作时的温度，并产生温度信号。 A / D转换装置接收温度信号，数字化温度信号，并产生数字温度数据。 存储装置将对应于补偿电压的补偿数据存储在相应地址处的差分数据。 差分数据包括当使用N级电平差数据（N =正整数）时，补偿数据的第0差分数据与第（N-1）个差分数据的预定参考值和所有第N个差分数据 。 操作装置接收数字温度数据和差分数据，并且响应于数字温度数据，基于差分数据生成补偿数据。 D / A转换装置接收补偿数据，将补偿数据转换成模拟补偿电压，并将模拟补偿电压提供给压控振荡器。

公开(公告)号：US5081431A

公开(公告)日：1992-01-14

申请号：US644614

申请日：1991-01-23

申请人： Kuichi Kubo ,  Tsutomu Yamakawa ,  Hiroshi Yoshida

发明人： Kuichi Kubo ,  Tsutomu Yamakawa ,  Hiroshi Yoshida

IPC分类号： H03B1/00 ,  H03L1/02

CPC分类号： H03L1/026 ,  H03B2201/0208 ,  H03L1/028

摘要： A digital temperature-compensated oscillator comprises a crystal oscillator, a first memory previously storing digital temperature compensation data obtained by previously measuring the relation between the ambient temperatures and the frequency deviations of the crystal oscillator, a second memory for storing frequency offset amounts of the oscillation frequency of the crystal oscillator, a temperature sensor for outputting analog detection data relating to the ambient temperature, an A/D converter for converting the analog detection data to digital detection data, a readout circuit for reading out temperature compensation data corresponding to the digital detection data and stored in the first memory according to the digital detection data and reading out the frequency offset amount stored in the second memory according to the digital detection data, an operation circuit for effecting the following calculation by use of the readout temperature compensation data and readout frequency offset amount to derive digital control voltage,V.sub.c =V.sub.co +(K.sub.00 +V.sub.co K.sub.10 +K.sub.01 T).times.(.DELTA.F+.DELTA.F.sup.2 .times.K.sub.10 /2)where K.sub.00, K.sub.01 and K.sub.10 are constants, V.sub.co is an initial value of the control voltage, T is an ambient temperature and .DELTA.F is a frequency offset amount, a D/A converter for converting the digital control voltage into an analog control voltage, and a voltage-capacitance converter for receiving the analog control voltage and generating a control signal to be supplied to the crystal oscillator according to the received analog control voltage, wherein the frequency of the crystal oscillator is controlled according to the control signal.

摘要翻译： 数字温度补偿振荡器包括晶体振荡器，预先存储通过预先测量环境温度与晶体振荡器的频率偏差之间的关系而获得的数字温度补偿数据的第一存储器，用于存储振荡的频率偏移量的第二存储器 晶体振荡器的频率，用于输出与环境温度有关的模拟检测数据的温度传感器，用于将模拟检测数据转换为数字检测数据的A / D转换器，读出与数字检测对应的温度补偿数据的读出电路 数据，并根据数字检测数据存储在第一存储器中，并根据数字检测数据读出存储在第二存储器中的频率偏移量;操作电路，用于通过使用读出的温度补偿数据和读出来进行以下计算 频率 偏移量导出数字控制电压，Vc = Vco +（K00 + VcoK10 + K01T）x（DELTA F + DELTA F2xK10 / 2）其中K00，K01和K10为常数，Vco为控制电压的初始值，T为环境 温度和DELTA F是频率偏移量，用于将数字控制电压转换为模拟控制电压的D / A转换器，以及用于接收模拟控制电压并产生要提供给晶体的控制信号的电压 - 电容转换器 振荡器根据接收的模拟控制电压，其中根据控制信号控制晶体振荡器的频率。

公开(公告)号：US20070247249A1

公开(公告)日：2007-10-25

申请号：US11787403

申请日：2007-04-16

申请人： Takaaki Ishikawa ,  Kuichi Kubo ,  Fumio Asamura ,  Kozo Ono

发明人： Takaaki Ishikawa ,  Kuichi Kubo ,  Fumio Asamura ,  Kozo Ono

IPC分类号： H03L1/00

CPC分类号： H03L1/023 ,  H03L1/04

摘要： A temperature-compensated crystal oscillator for surface mounting wherein an IC chip into which is integrated a temperature-compensated device having an oscillating circuit and a temperature sensor, which supplies a compensation voltage to a variable-voltage capacitor element of the oscillating circuit, and which also has IC terminals disposed along two edges comprising at least diagonally opposite corner portions of one main surface that acts as a circuit function surface is affixed with the use of bumps to an inner base surface of a main container that is concave in section, and one edge portion of a crystal piece is affixed to an inner wall step portion of the main container; wherein an active element of the oscillating circuit that acts as a heat source and a temperature sensor of the temperature-compensated device are disposed at diagonally opposite corner regions of the IC chip at the greatest distance apart. In addition, IC terminals for thermal dissipation are provided in a central region of the IC chip. The present invention provides a temperature-compensated oscillator for surface mounting in which the temperature-compensation operation at startup is satisfactory and frequency stability is maintained.

摘要翻译： 一种用于表面安装的温度补偿晶体振荡器，其中集成了具有振荡电路的温度补偿装置和向振荡电路的可变电压电容器元件提供补偿电压的温度传感器的IC芯片， 还具有沿着两个边缘布置的IC端子，其包括用作电路功能表面的一个主表面的至少对角线相对的角部，其中使用凸块来固定到位于凹入部分的主容器的内基面，并且一个 水晶片的边缘部分固定在主容器的内壁台阶部分上; 其中作为温度补偿装置的热源的振荡电路的有源元件和温度补偿装置的温度传感器以最远的距离设置在IC芯片的对角相对的拐角区域。 此外，用于散热的IC端子设置在IC芯片的中心区域中。 本发明提供一种用于表面安装的温度补偿振荡器，其中启动时的温度补偿操作令人满意并且维持频率稳定性。

公开(公告)号：US20050017811A1

公开(公告)日：2005-01-27

申请号：US10897977

申请日：2004-07-22

申请人： Fumio Asamura ,  Kuichi Kubo ,  Kozo Ono

发明人： Fumio Asamura ,  Kuichi Kubo ,  Kozo Ono

IPC分类号： H03B5/32 ,  H03H9/02 ,  H03B5/12

CPC分类号： H03B5/32

摘要： A surface-mounted oscillator configured by integrally accommodating an oscillation element, an IC chip, and a circuit element in a surface-mounted package is characterized in that the oscillation element, the IC chip, and the circuit element are arranged in positions in a direction vertical to a mounting surface of the surface-mounted oscillator. The oscillation element may be an oscillation element using bulk wave oscillation, or an oscillation element using surface wave oscillation.

摘要翻译： 将表面安装的振荡元件，IC芯片和电路元件整体地容纳在表面安装封装中的表面安装振荡器的特征在于，振荡元件，IC芯片和电路元件被布置在方向 垂直于表面安装振荡器的安装表面。 振荡元件可以是使用体波振荡的振荡元件，也可以是使用表面波振荡的振荡元件。

公开(公告)号：US06771135B2

公开(公告)日：2004-08-03

申请号：US10370177

申请日：2003-02-19

申请人： Kuichi Kubo ,  Fumio Asamura

发明人： Kuichi Kubo ,  Fumio Asamura

IPC分类号： H03B532

CPC分类号： H03B5/04 ,  H03B5/368

摘要： A temperature-compensated crystal oscillator (TCXO) comprises a voltage-controlled crystal oscillator (VCXO) having a crystal unit, a compensating voltage generator for generating a compensating voltage applied to the voltage-controlled crystal oscillator, a low pass filter inserted between the compensating voltage generator and voltage-controlled crystal oscillator, and a switching element connected in parallel with the low pass filter for short-circuiting across the low pass filter. In a manufacturing process of the temperature-compensated crystal oscillator, switching element is brought into a conducting state when an excitation electrode of the crystal unit is irradiated with an ion beam for adjusting the oscillation frequency.

摘要翻译： 温度补偿晶体振荡器（TCXO）包括具有晶体单元的压控晶体振荡器（VCXO），用于产生施加到压控晶体振荡器的补偿电压的补偿电压发生器，插入在补偿电压晶体振荡器 电压发生器和压控晶体振荡器，以及与低通滤波器并联连接的开关元件，用于跨低通滤波器短路。 在温度补偿晶体振荡器的制造过程中，当用用于调节振荡频率的离子束照射晶体单元的激励电极时，开关元件进入导通状态。

公开(公告)号：US06737928B2

公开(公告)日：2004-05-18

申请号：US10205999

申请日：2002-07-26

申请人： Kuichi Kubo ,  Fumio Asamura

发明人： Kuichi Kubo ,  Fumio Asamura

IPC分类号： H03B532

CPC分类号： H03L1/023

摘要： A temperature-compensated crystal oscillator with good phase noise characteristics has a crystal unit, a voltage-variable capacitive element inserted in a closed oscillating loop including the crystal unit, and an amplifier for keeping oscillation in the closed oscillating loop. The frequency vs. temperature characteristics of the temperature-compensated crystal oscillator can be compensated for by the temperature compensating voltage input thereto. The temperature compensating voltage is applied to an anode of the voltage-variable capacitive element, and a voltage to prevent a current from flowing through the voltage-variable capacitive element is applied to a cathode of the voltage-variable capacitive element. The voltage-variable capacitive element preferably comprises a variable-capacitance diode.

摘要翻译： 具有良好相位噪声特性的温度补偿晶体振荡器具有晶体单元，插入包括晶体单元的闭合振荡环中的可变电容元件和用于在闭合振荡环中保持振荡的放大器。 温度补偿晶体振荡器的频率对温度特性可以通过输入到其的温度补偿电压进行补偿。 将温度补偿电压施加到电压可变电容元件的阳极，并且将防止电流流过可变电容元件的电压施加到电压可变电容元件的阴极。 电压可变电容元件优选地包括可变电容二极管。

公开(公告)号：US07471162B2

公开(公告)日：2008-12-30

申请号：US11787403

申请日：2007-04-16

申请人： Takaaki Ishikawa ,  Kuichi Kubo ,  Fumio Asamura ,  Kozo Ono

发明人： Takaaki Ishikawa ,  Kuichi Kubo ,  Fumio Asamura ,  Kozo Ono

IPC分类号： H03B1/00

CPC分类号： H03L1/023 ,  H03L1/04

摘要： A temperature-compensated crystal oscillator for surface mounting wherein an IC chip into which is integrated a temperature-compensated device having an oscillating circuit and a temperature sensor, which supplies a compensation voltage to a variable-voltage capacitor element of the oscillating circuit, and which also has IC terminals disposed along two edges comprising at least diagonally opposite corner portions of one main surface that acts as a circuit function surface is affixed with the use of bumps to an inner base surface of a main container that is concave in section, and one edge portion of a crystal piece is affixed to an inner wall step portion of the main container; wherein an active element of the oscillating circuit that acts as a heat source and a temperature sensor of the temperature-compensated device are disposed at diagonally opposite corner regions of the IC chip at the greatest distance apart. In addition, IC terminals for thermal dissipation are provided in a central region of the IC chip. The present invention provides a temperature-compensated oscillator for surface mounting in which the temperature-compensation operation at startup is satisfactory and frequency stability is maintained.

摘要翻译： 一种用于表面安装的温度补偿晶体振荡器，其中集成了具有振荡电路的温度补偿装置和向振荡电路的可变电压电容器元件提供补偿电压的温度传感器的IC芯片， 还具有沿着两个边缘布置的IC端子，其包括用作电路功能表面的一个主表面的至少对角线相对的角部分，其中使用凸块固定在主容器的内部基部表面上，该主容器的内部是凹形的， 水晶片的边缘部分固定在主容器的内壁台阶部分上; 其中作为温度补偿装置的热源的振荡电路的有源元件和温度补偿装置的温度传感器以最远的距离设置在IC芯片的对角相对的拐角区域。 此外，用于散热的IC端子设置在IC芯片的中心区域中。 本发明提供一种用于表面安装的温度补偿振荡器，其中启动时的温度补偿操作令人满意并且维持频率稳定性。

公开(公告)号：US07157981B2

公开(公告)日：2007-01-02

申请号：US10897977

申请日：2004-07-22

申请人： Fumio Asamura ,  Kuichi Kubo ,  Kozo Ono

发明人： Fumio Asamura ,  Kuichi Kubo ,  Kozo Ono

IPC分类号： H03B5/12

CPC分类号： H03B5/32

摘要： A surface-mounted oscillator configured by integrally accommodating an oscillation element, an IC chip, and a circuit element in a surface-mounted package is characterized in that the oscillation element, the IC chip, and the circuit element are arranged in positions in a direction vertical to a mounting surface of the surface-mounted oscillator. The oscillation element may be an oscillation element using bulk wave oscillation, or an oscillation element using surface wave oscillation.

摘要翻译： 将表面安装的振荡元件，IC芯片和电路元件整体地容纳在表面安装封装中的表面安装振荡器的特征在于，振荡元件，IC芯片和电路元件被布置在方向 垂直于表面安装振荡器的安装表面。 振荡元件可以是使用体波振荡的振荡元件，也可以是使用表面波振荡的振荡元件。

公开(公告)号：US07023290B2

公开(公告)日：2006-04-04

申请号：US10272645

申请日：2002-10-16

申请人： Kuichi Kubo ,  Fumio Asamura

发明人： Kuichi Kubo ,  Fumio Asamura

IPC分类号： H03B5/32

CPC分类号： H03B5/368 ,  H03B5/04 ,  H03L1/00 ,  H03L1/023

摘要： A temperature-compensated crystal oscillator is provided with an IC (integrated circuit) having a power supply terminal, an output terminal, and an automatic frequency control (AFC) voltage input terminal. In the temperature-compensated crystal oscillator, at least one oscillation circuit is integrated and the frequency-temperature characteristic of a quartz crystal unit is compensated. The temperature-compensated crystal oscillator includes one or more damping resistors for reducing the resonance acuteness of parasitic resonance circuits which result from inductance produced when mounting the IC on a wiring board and stray capacitance existing in the vicinity of each terminal of the IC. The dumping resistors are connected to at least one of the power supply terminal, output terminal, and automatic frequency control voltage input terminal.

公开(公告)号：US06861915B2

公开(公告)日：2005-03-01

申请号：US10201467

申请日：2002-07-23

申请人： Kuichi Kubo ,  Fumio Asamura

发明人： Kuichi Kubo ,  Fumio Asamura

IPC分类号： H03B5/32 ,  H03B1/00 ,  H03B5/36

CPC分类号： H03B5/368 ,  H03B2201/0266

摘要： A crystal oscillator has a quartz-crystal unit, a first oscillating capacitor connected between a first end of the crystal unit and a reference potential point, a second oscillating capacitor connected between a second end of the crystal unit and the reference potential point, a CMOS inverter connected parallel to the crystal unit, and a feedback resistor connected across the inverter. The crystal oscillator can easily be incorporated into integrated circuits and has an increased variable oscillation frequency range. The crystal oscillator also has an adjustable capacitive assembly having selectable capacitances which is connected parallel to a combined capacitor comprising the first and the second oscillating capacitors.

摘要翻译： 晶体振荡器具有石英晶体单元，连接在晶体单元的第一端和参考电位点之间的第一振荡电容器，连接在晶体单元的第二端和参考电位点之间的第二振荡电容器，CMOS 逆变器并联到晶体单元，反馈电阻连接在逆变器上。 晶体振荡器可以方便地集成到集成电路中，并且具有增加的可变振荡频率范围。 晶体振荡器还具有可调电容组件，其具有与包括第一和第二振荡电容器的组合电容器并联连接的可选电容。