公开(公告)号：US20030137361A1

公开(公告)日：2003-07-24

申请号：US10047249

申请日：2002-01-14

Inventor： Thomas Knecht ,  Marlin Luff ,  Steven J. Fry

IPC: H03L001/00

CPC classification number: H03L7/18 ,  H01L2224/16 ,  H01L2924/01019 ,  H01L2924/01046 ,  H01L2924/01079 ,  H01L2924/13091 ,  H01L2924/1627 ,  H01L2924/3011 ,  H03L1/025 ,  H03L7/099

Abstract: A frequency-adjustable oscillator suitable for digital signal clock synchronization comprises a crystal oscillator circuit for generating a driving signal and having a voltage-variable control input for adjusting a frequency of the driving signal, a phase detector circuit for generating a phase offset signal, a filter which operates on the phase offset signal to produce a VCO control signal, a voltage controlled oscillator circuit operably linked to the filter and responsive to the VCO control signal for generating an analog controlled-frequency signal, a frequency divider circuit for generating a reduced frequency feedback signal in response to the controlled-frequency signal. The frequency-adjustable oscillator also includes a double-sided package including a platform having a central portion and an outer portion with sidewalls extending substantially upwardly and substantially downwardly from the outer portion of the platform. The upwardly extending sidewalls and the platform form a first cavity adapted to receive and electrically connect the quartz resonator. The downwardly extending sidewalls and the platform forming a second cavity adapted to receive and electrically connect at least one electronic component. A cover is coupled with the first cavity to create an isolated environment for containing the quartz resonator.

Abstract translation: 适用于数字信号时钟同步的频率可调振荡器包括用于产生驱动信号并具有用于调节驱动信号的频率的电压可变控制输入的晶体振荡器电路，用于产生相位偏移信号的相位检测器电路， 滤波器，其对相位偏移信号进行操作以产生VCO控制信号;压控振荡器电路，其可操作地连接到所述滤波器并响应于所述VCO控制信号以产生模拟受控频率信号;分频器电路，用于产生降频 响应于受控频率信号的反馈信号。 频率可调节振荡器还包括双面封装，其包括具有中心部分的平台和具有从平台的外部部分基本向上且基本向下延伸的侧壁的外部部分。 向上延伸的侧壁和平台形成适于接收和电连接石英谐振器的第一腔。 向下延伸的侧壁和平台形成适于接收和电连接至少一个电子部件的第二腔。 盖与第一腔结合以产生用于容纳石英谐振器的隔离环境。

公开(公告)号：US06522212B1

公开(公告)日：2003-02-18

申请号：US09664921

申请日：2000-09-18

Applicant: Walter Kodim

Inventor： Walter Kodim

IPC: H03L100

CPC classification number: H03B5/04 ,  H03B5/32 ,  H03L1/025 ,  H03L1/028

Abstract: The invention relates to a device and a method for temperature compensation via the determination of cut-angles of a master and a slave crystal (mc, sc) employed in a master and slave oscillator (m, s). When the master and the slave oscillator (m, s) have been tuned to their center frequencies (fc_m, fc_s), then the temperature characteristic of the slave oscillator (s) is actively detuned with respect to the temperature characteristic of the master oscillator (m). In a detuned state a frequency ratio parameter (n_s) of the slave to the master output frequency (f_s/f_m) is determined and the cut-angle is determined by using this parameter (n_s) to read out the cut-angle dependent on the temperature (T) from a memory (MEM). The invention also relates to a temperature compensation device and method where two crystals of different cut-angles are used and a frequency ratio parameter is determined to determine the identity/symmetry or difference of the cut-angles. Particular useful applications of the invention are in dual-mode mobile telephones which require the use of at least two oscillators with different resonant frequencies.

Abstract translation: 本发明涉及一种用于通过确定在主和从振荡器（m，s）中采用的主晶体和从晶体（mc，sc）的切角的温度补偿的装置和方法。 当主机和从机振荡器（m，s）已被调谐到其中心频率（fc_m，fc_s）时，从机振荡器的温度特性相对于主振荡器的温度特性被主动失谐（ m）。 在失谐状态下，确定从机与主输出频率（f_s / f_m）的频率比参数（n_s），并且通过使用该参数（n_s）来确定切角，以根据 温度（T）来自存储器（MEM）。 本发明还涉及一种使用两个不同切角的晶体的温度补偿装置和方法，并且确定频率比参数以确定切角的身份/对称性或差异。 本发明的特别有用的应用是在需要使用具有不同谐振频率的至少两个振荡器的双模移动电话中。

公开(公告)号：US20020084863A1

公开(公告)日：2002-07-04

申请号：US10026916

申请日：2001-12-27

Inventor： Richard N. Sutliff ,  Jaroslaw E. Adamski ,  Ammar Yasser Rathore ,  Iyad Alhayek

IPC: H03L001/00

CPC classification number: H03L3/00 ,  H03L1/025

Abstract: A method and apparatus are provided for reducing a startup interval of a temperature controlled crystal oscillator chip. The method includes the steps of connecting an operating circuit of the temperature controlled crystal oscillator chip into a first configuration to reduce the startup interval following application of power and reconnecting the operating circuit into a second configuration after a predetermined time period.

Abstract translation: 提供了一种降低温度控制的晶体振荡器芯片的启动间隔的方法和装置。 该方法包括以下步骤：将温度控制晶体振荡器芯片的工作电路连接到第一配置中，以在施加电力之后减少启动间隔，并且在预定时间段之后将操作电路重新连接成第二配置。

公开(公告)号：US20020063608A1

公开(公告)日：2002-05-30

申请号：US09734334

申请日：2000-11-30

Inventor： Richard N. Sutliff ,  Iyad Alhayek ,  Ammar Yasser Rathore ,  Jaroslaw Adamski

IPC: H03B005/36 ,  H03L001/02

CPC classification number: H03L1/026 ,  H03B5/04 ,  H03B5/36 ,  H03L1/025

Abstract: A method and apparatus are provided for constructing a temperature controlled crystal oscillator chip. The method includes the steps of disposing a connection pad on a surface of the chip, providing a first circuit within the chip for control of a first chip function through a first interconnection with the connection pad and providing a second circuit within the chip for control of a second chip function, unrelated to the first chip function, through a second interconnection with the connection pad.

Abstract translation: 提供了一种构造温度控制晶体振荡器芯片的方法和装置。 该方法包括以下步骤：将连接焊盘设置在芯片的表面上，在芯片内提供第一电路，用于通过与连接焊盘的第一互连来控制第一芯片功能，并在芯片内提供第二电路以控制 与第一芯片功能无关的第二芯片功能，通过与连接焊盘的第二互连。

公开(公告)号：US06388532B1

公开(公告)日：2002-05-14

申请号：US09504176

申请日：2000-02-15

Applicant: David J. Babcock

Inventor： David J. Babcock

IPC: G01R2300

CPC classification number: H03L7/18 ,  H03L1/025

Abstract: A system and method for programming a digitally tunable oscillator is provided. A desired output frequency is received. A tuning effect of a set of digital tuning words on a crystal resonant frequency is determined, and valid parameters of an algorithm for translating and tuning the crystal resonant frequency to a value within an error tolerance of the desired frequency, based on the determined tuning effect are calculated. Valid parameters are preferably calculated based on an intermediate tuning value, sorted by ascending divide parameter of the algorithm, and then evaluated in sorted order for ability of a tuning effect to null frequency error to within the error tolerance. The valid set of calculated parameters are then programmed into a nonvolatile memory. The oscillator control parameters may remain unprogrammed until all necessary parameters are defined. Because the device may be programmed in a single step, without intermediate presumption of nominal crystal frequency, the final plate process may be unnecessary. A high accuracy may be obtained by searching through the complete set of available parameters for a set that meets a frequency and tolerance specification. The oscillator is preferably a Cypress CY2037 device.

Abstract translation: 提供了一种用于编程数字可调谐振荡器的系统和方法。 接收期望的输出频率。 确定一组数字调谐字对晶体谐振频率的调谐效应，以及基于所确定的调谐效应，将用于将晶体谐振频率转换和调谐到所需频率的误差容限内的值的算法的有效参数 被计算。 优选地，根据算法的上升除法参数对中间调整值进行有效参数的计算，然后按照排序顺序对调谐效应的零频率误差进行误差容限的评估。 然后将有效的计算参数集编程到非易失性存储器中。 振荡器控制参数可能保持未编程，直到定义了所有必要的参数。 因为可以在单个步骤中编程器件，而不会中间推定额定晶体频率，所以最终的板工艺可能是不必要的。 通过搜索满足频率和公差规范的一组的可用参数的完整集合可以获得高精度。 振荡器最好是赛普拉斯CY2037器件。

公开(公告)号：US5774800A

公开(公告)日：1998-06-30

申请号：US609173

申请日：1996-03-01

Applicant: Kazuhiro Mori

Inventor： Kazuhiro Mori

IPC: H03B5/32 ,  H03J1/00 ,  H03J7/02 ,  H03J7/06 ,  H03L1/02 ,  H04B1/26 ,  H04B1/3822 ,  H04B1/40 ,  H04B7/26 ,  H04B17/00 ,  H04W24/00 ,  H04W88/02 ,  H04B1/06 ,  H04B7/00

CPC classification number: H03J7/06 ,  H03J1/0033 ,  H03L1/025

Abstract: A radio communication apparatus includes a control section detecting the frequency of the intermediate-frequency signal from a mixer and adjusting the local oscillation frequency generated by a local oscillator on the basis of the detected intermediate frequency. The adjusted local oscillation frequency is supplied to the mixer to stabilize the intermediate frequency.

Abstract translation: 无线电通信装置包括控制部分，其根据检测到的中频检测来自混频器的中频信号的频率，并调整本地振荡器产生的本地振荡频率。 将调节的本地振荡频率提供给混频器以稳定中频。

公开(公告)号：US5757244A

公开(公告)日：1998-05-26

申请号：US606072

申请日：1996-02-23

Applicant: Youji Nonaka ,  Yuji Ishida ,  Youji Suwa ,  Toshikazu Hiramoto

Inventor： Youji Nonaka ,  Yuji Ishida ,  Youji Suwa ,  Toshikazu Hiramoto

IPC: H03D7/16 ,  H03L1/02

CPC classification number: H03L1/025 ,  H03D7/165 ,  H03L1/028

Abstract: In a portable telephone which uses a CPU, a memory, a temperature sensor, a D/A converter, and an A/d converter as control elements, and which has an oscillation circuit including a crystal resonator and a variable-capacitance diode, temperature compensation of the output frequency is made by using these existing control elements. The memory is previously stored with control information for correcting an output frequency drift of the portable telephone caused by a temperature change. The temperature of the oscillation circuit is detected with the temperature sensor and converted into a digital value in the A/D converter. The CPU reads control information corresponding to the detected temperature from the memory and applies it to the variable-capacitance diode of the oscillation circuit through the D/A converter, thereby maintaining the output frequency at a constant level. Also disclosed is a method of efficiently calculating an oscillation frequency of a crystal resonator with a reduced number of points of measurement for a temperature characteristic of the crystal resonator. A method of accurately carrying out the above-described temperature compensation is also disclosed.

Abstract translation: 在使用CPU，存储器，温度传感器，D / A转换器和A / D转换器作为控制元件的便携式电话中，具有包括晶体谐振器和可变电容二极管的振荡电路，温度 通过使用这些现有的控制元件来补偿输出频率。 存储器预先存储有用于校正由温度变化引起的便携式电话的输出频率漂移的控制信息。 用温度传感器检测振荡电路的温度，并在A / D转换器中转换为数字值。 CPU从存储器读取对应于检测到的温度的控制信息，并通过D / A转换器将其施加到振荡电路的可变电容二极管，从而将输出频率保持在恒定水平。 还公开了一种利用晶体谐振器的温度特性减少的测量点数来有效地计算晶体谐振器的振荡频率的方法。 还公开了一种精确地执行上述温度补偿的方法。

公开(公告)号：US3713033A

公开(公告)日：1973-01-23

申请号：US3713033D

申请日：1971-09-01

Applicant: COLLINS RADIO CO

Inventor： FRERKING M

IPC: H03L1/02 ,  H03B5/36

CPC classification number: H03L1/025

Abstract: A SYSTEM FOR DIGITALLY CORRECTED THE FREQUENCY OF A CRYSTAL OSCILLAR AS A FUNCTION OF AMBIENT TEMPERATURE. AMBIENT TEMPERATURE SENSED IS CONVERTED TO DIGITAL DATA THAT IS USED TO ADDRESS A PREPROGRAMED READ ONLY MEMORY TO DETERMINE THE FREQUENCY CORRECTION FACTOR REQUIRED FOR THE AMBIENT TEMPERATURRE MEASURED. THE FACTOR IN THE FORM OF DIGITAL FREQUENCY CORRECTION WORD IS THEN CONVERTED TO AN ANALOGUE VOLTAGE AND APPLIED TO A VOLTAGE RESPONSIVE OSCILLATOR FREQUENCY VARYING DEVICE FOR CORRECTING OSCILLATOR FREQUENCY.

公开(公告)号：US09762180B2

公开(公告)日：2017-09-12

申请号：US15123681

申请日：2015-03-11

Applicant: NIHON DEMPA KOGYO CO., LTD.

Inventor： Tsuyoshi Shiobara

IPC: H03B5/32 ,  H03B5/04 ,  H03L1/02 ,  H03L1/00 ,  H03B5/36

CPC classification number: H03B5/04 ,  H03B5/32 ,  H03B5/366 ,  H03B5/368 ,  H03B2200/0008 ,  H03L1/00 ,  H03L1/025

Abstract: An oscillator includes a front side voltage divider, a rear side voltage divider, and an oscillation unit. The front side voltage divider includes a first resistor connected between a first and second potential sources, and a first output terminal configured to changeably connect to a connection position in the first resistor so as to vary an obtained output voltage. The rear side voltage divider includes a second resistor connected between the first output terminal and a third potential source; and a second output terminal configured to changeably connect to a connection position in the second resistor so as to vary an obtained output voltage. The oscillation unit includes a variable capacitance element with a capacitance varied according to the output voltage from the second output terminal. The oscillation unit varies an output frequency based on a variation in a resonance point associated with a variation in the capacitance.

公开(公告)号：US20170019064A1

公开(公告)日：2017-01-19

申请号：US15123681

申请日：2015-03-11

Applicant: NIHON DEMPA KOGYO CO., LTD.

Inventor： Tsuyoshi SHIOBARA

IPC: H03B5/04 ,  H03B5/32

CPC classification number: H03B5/04 ,  H03B5/32 ,  H03B5/366 ,  H03B5/368 ,  H03B2200/0008 ,  H03L1/00 ,  H03L1/025

Abstract: An oscillator includes a front side voltage divider, a rear side voltage divider, and an oscillation unit. The front side voltage divider includes a first resistor connected between a first and second potential sources, and a first output terminal configured to changeably connect to a connection position in the first resistor so as to vary an obtained output voltage. The rear side voltage divider includes a second resistor connected between the first output terminal and a third potential source; and a second output terminal configured to changeably connect to a connection position in the second resistor so as to vary an obtained output voltage. The oscillation unit includes a variable capacitance element with a capacitance varied according to the output voltage from the second output terminal. The oscillation unit varies an output frequency based on a variation in a resonance point associated with a variation in the capacitance.

Abstract translation: 振荡器包括前侧分压器，后侧分压器和振荡单元。 前侧分压器包括连接在第一和第二电位之间的第一电阻器和被配置为可变地连接到第一电阻器中的连接位置以便改变获得的输出电压的第一输出端子。 后侧分压器包括连接在第一输出端子和第三电位源之间的第二电阻器; 以及第二输出端子，被配置为可变地连接到第二电阻器中的连接位置，以便改变所获得的输出电压。 振荡单元包括具有根据来自第二输出端子的输出电压而变化的电容的可变电容元件。 振荡单元基于与电容变化相关联的谐振点的变化来改变输出频率。