公开(公告)号：US20170214364A1

公开(公告)日：2017-07-27

申请号：US15409538

申请日：2017-01-19

Applicant: NIHON DEMPA KOGYO CO., LTD.

Inventor： Yoshihiro WATANABE

IPC: H03B5/32 ,  H03H9/10

CPC classification number: H03B5/32 ,  H03H9/02102 ,  H03H9/0519 ,  H03H9/0547 ,  H03H9/10 ,  H03H9/1014 ,  H03H9/175 ,  H03L1/00 ,  H03L7/00

Abstract: A crystal oscillator includes a surface mount type crystal unit and a mounting substrate. The surface mount type crystal unit includes a ceramic container. The surface mount type crystal unit has a rectangular shape as a planar shape. The mounting substrate includes a ceramic substrate on which an electronic component is mounted, the mounting substrate having a rectangular shape as a planar shape. The crystal oscillator has a structure where the surface mount type crystal unit and the mounting substrate are laminated, and both terminals of the surface mount type crystal unit and the mounting substrate are connected with a bonding material. The mounting substrate and the surface mount type crystal unit are connected in a positional relationship where a long side of the mounting substrate and a long side of the surface mount type crystal unit are orthogonal.

公开(公告)号：US09692425B2

公开(公告)日：2017-06-27

申请号：US14994372

申请日：2016-01-13

Applicant: Seiko Epson Corporation

Inventor： Akihiro Fukuzawa

IPC: H03L1/00

CPC classification number: H03L1/00

Abstract: An oscillator includes a control voltage generator that generates a control voltage between a first reference voltage and a second reference voltage with a digital signal, and a voltage controlled oscillation circuit that outputs a signal at a frequency in response to the control voltage. The control voltage generator includes a first D/A conversion circuit of resistor voltage-dividing type that generates a voltage between the first reference voltage and the second reference voltage.

公开(公告)号：US20170170833A1

公开(公告)日：2017-06-15

申请号：US15441603

申请日：2017-02-24

Applicant: Intel Corporation

Inventor： Cho-Ying Lu ,  William Yee Li ,  Khoa Minh Nguyen ,  Ashoke Ravi ,  Maneesha Yellepeddi ,  Binta M. Patel

IPC: H03L7/085 ,  H03L7/099

CPC classification number: H03L7/085 ,  H03L1/00 ,  H03L7/08 ,  H03L7/091 ,  H03L7/0991 ,  H03L7/0992 ,  H03L2207/50

Abstract: A system for assigning a characterization and calibrating a parameter is disclosed. The system includes a frequency measurement circuit and a finite state machine. The frequency measurement circuit is configured to measure frequencies of an oscillatory signal and to generate a measurement signal including measured frequencies. The finite state machine is configured to control measurements by the frequency measurement circuit, to assign a characterization to a parameter based on the measurement signal, and to generate a calibration signal based on the characterized parameter.

公开(公告)号：US09641184B2

公开(公告)日：2017-05-02

申请号：US14728877

申请日：2015-06-02

Applicant: Intel Corporation

Inventor： Shenggao Li

IPC: H03L7/00 ,  H03L7/099 ,  H03B1/00 ,  H03L1/00 ,  H03L7/10 ,  H03L7/16

CPC classification number: H03L7/0991 ,  H03B1/00 ,  H03L1/00 ,  H03L7/099 ,  H03L7/104 ,  H03L7/16 ,  H03L2207/06 ,  H03L2207/50

Abstract: Automatic digital sensing and compensation of frequency drift caused by temperature, aging, and/or other effects may be provided by including a compensation capacitor array and a sensing logic. The sensing logic may be configured to detect a drift in a first control signal and to provide the compensation capacitor array with a second control signal. The second control signal is configured to cause an adjustment of capacitance in the compensation capacitor array based on the detected drift in the first control signal.

公开(公告)号：US09602110B1

公开(公告)日：2017-03-21

申请号：US14963462

申请日：2015-12-09

Applicant: Silicon Laboratories Inc.

Inventor： Aaron J. Caffee

IPC: H03L1/02

CPC classification number: H03L1/00 ,  H03L1/026 ,  H03L7/085

Abstract: An oscillator amplifier biasing technique configures an oscillator amplifier to operate at a bias point causing loading on a tank circuit to have reduced or negligible dependence on amplifier bias conditions or device characteristics. The bias signal level may vary with variation in temperature. The oscillator amplifier biasing technique includes determining a bias signal level that has a minimum sensitivity of the frequency of oscillation as a function of temperature. The technique may store associated data in non-volatile memory to describe the bias signal level dependence on temperature. A digital-to-analog converter may drive the bias signal of the oscillator to the minimum sensitivity point as a function of temperature. The technique may substantially reduce effects of up-conversion of flicker noise in the oscillator output signal as well as improve frequency accuracy in the presence of effects such as mechanical strain and/or aging.

公开(公告)号：US09455727B2

公开(公告)日：2016-09-27

申请号：US14498728

申请日：2014-09-26

Applicant: INTEL CORPORATION

Inventor： Shenggao Li ,  Guluke Tong ,  Sujatha B. Gowder ,  Fulvio Spagna

IPC: H03L1/00 ,  H03L7/099 ,  H03L1/02 ,  H03L7/093 ,  H03L7/24

CPC classification number: H03L7/0991 ,  H03L1/00 ,  H03L1/022 ,  H03L5/00 ,  H03L7/093 ,  H03L7/0995 ,  H03L7/24 ,  H03L2207/06

Abstract: Embodiments include apparatuses, methods, and systems for open-loop voltage regulation and drift compensation for a digitally controlled oscillator (DCO). in embodiments, a communication circuit may include a DCO, an open-loop voltage regulator, and a calibration circuit. The open-loop voltage regulator may receive a calibration voltage and may generate a regulated voltage. The regulated voltage may be passed to the DCO. During a calibration mode, the calibration circuit may compare the regulated voltage to a reference voltage and adjust the calibration voltage based on the comparison to provide the regulated voltage with a target value. During a monitoring mode, the calibration circuit may receive a tuning code that is used to tune the DCO and further adjust the calibration voltage based on a value of the tuning code.

Abstract translation: 实施例包括用于数字控制振荡器（DCO）的开环电压调节和漂移补偿的装置，方法和系统。 在实施例中，通信电路可以包括DCO，开环电压调节器和校准电路。 开环稳压器可以接收校准电压并且可以产生调节电压。 调节电压可以传递到DCO。 在校准模式期间，校准电路可以将调节电压与参考电压进行比较，并根据比较调节校准电压，以将调节电压提供给目标值。 在监视模式期间，校准电路可以接收用于调谐DCO的调谐码，并且基于调谐码的值进一步调整校准电压。

公开(公告)号：US09413360B2

公开(公告)日：2016-08-09

申请号：US14747146

申请日：2015-06-23

Applicant: CHUNG YUAN CHRISTIAN UNIVERSITY

Inventor： Shih-Lun Chen ,  Ming-Chun Tuan

IPC: H03B5/32 ,  H03L7/00 ,  H03L1/00 ,  G06F1/12 ,  G06F13/42 ,  H03B5/04

CPC classification number: H03L1/00 ,  G06F1/12 ,  G06F13/4295 ,  H03B5/04 ,  H03B5/32

Abstract: An oscillation module includes a frequency generator, a signal calibrator, a multiplexer, and a controller. The oscillation module is calibrated by using calibration parameters and a control instruction of which the frequency and phase are the same as the oscillation frequency signal generated by the frequency generator. As a consequence, an electronic pin used for processing asynchronous signals can be saved so as to reduce the chip area of the oscillation module.

Abstract translation: 振荡模块包括频率发生器，信号校准器，多路复用器和控制器。 振荡模块通过使用校准参数和频率和相位与由频率发生器产生的振荡频率信号相同的控制指令进行校准。 因此，可以节省用于处理异步信号的电子引脚，以减少振荡模块的芯片面积。

公开(公告)号：US20160226500A1

公开(公告)日：2016-08-04

申请号：US15021867

申请日：2013-09-22

Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

Inventor： Zhongyuan Zhao ,  Weixu Wang ,  Luping Pan

IPC: H03L7/093 ,  G01P15/097 ,  H03G3/20

CPC classification number: H03L7/093 ,  G01P15/097 ,  H03G3/20 ,  H03L1/00 ,  H03L7/099

Abstract: In a method for mitigating the vibration-induced phase noise of an phase locked loop with an acceleration sensitive voltage controlled oscillator, a correction signal generated by applying a gain and a equalization to an acceleration signal provided by an acceleration sensor sensing the acceleration on the VCO, is added to the oscillator control signal for active compensation, an adaptive compensation unit dynamically adjusts the gain, the frequency response of equalization, and the sensing direction of the acceleration sensor while the phase locked loop is working to make the active compensation automatically adapt to the parameters of the voltage controlled oscillator.

Abstract translation: 在利用加速度敏感电压控制振荡器来减轻锁相环振动引起的相位噪声的方法中，通过对感测VCO上的加速度的加速度传感器提供的加速度信号应用增益和均衡产生的校正信号 ，被添加到用于有源补偿的振荡器控制信号中，自适应补偿单元在锁相环工作时动态地调节增益，均衡的频率响应和加速度传感器的感测方向，使得主动补偿自动适应 压控振荡器的参数。

公开(公告)号：US20160226496A1

公开(公告)日：2016-08-04

申请号：US15009485

申请日：2016-01-28

Applicant: Rambus Inc.

Inventor： Marko Aleksic ,  Brian S. Leibowitz

IPC: H03L1/00 ,  H03L7/24

CPC classification number: H03L1/00 ,  H03K3/0315 ,  H03L7/083 ,  H03L7/24

Abstract: A variable injection-strength injection-locked oscillator (ILO) is described. The variable injection-strength ILO can output an output clock signal based on an input clock signal. The variable injection-strength ILO can pause, restart, slow down, or speed up the output clock signal synchronously with respect to the input clock signal in response to receiving power mode information. Specifically, the variable injection-strength ILO can be operated under relatively strong injection when the input clock signal is paused, restarted, slowed down, or sped up.

公开(公告)号：US09319031B2

公开(公告)日：2016-04-19

申请号：US14225079

申请日：2014-03-25

Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Michael M. Green ,  Xiaoyan Gui

IPC: H03K3/03 ,  H03K3/011 ,  H03B5/04 ,  H03B27/00 ,  H03L1/00

CPC classification number: H03K3/0322 ,  H03B5/04 ,  H03B27/00 ,  H03B2201/038 ,  H03B2202/042 ,  H03K3/011 ,  H03L1/00

Abstract: High-speed CMOS ring voltage controlled oscillators with low supply sensitivity have been disclosed. According to one embodiment, a CML ring oscillator comprises a CML negative impedance compensation circuit comprising two cross coupled transistors and a resistor connected to the two transistors for resistive biasing and a CML interpolating delay cell connected in parallel with the CML negative impedance compensation. An impedance change of the CML negative impedance compensation due to supply variation counteracts an impedance change of the CML interpolating delay cell.

Abstract translation: 已经公开了具有低供应灵敏度的高速CMOS环形电压控制振荡器。 根据一个实施例，CML环形振荡器包括CML负阻抗补偿电路，其包括两个交叉耦合晶体管和连接到两个用于电阻偏置的晶体管的电阻器以及与CML负阻抗补偿并联连接的CML内插延迟单元。 由于电源变化引起的CML负阻抗补偿的阻抗变化抵消了CML内插延迟单元的阻抗变化。