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。

公开(公告)号：US20150042410A1

公开(公告)日：2015-02-12

申请号：US14453979

申请日：2014-08-07

Applicant: Seiko Epson Corporation

Inventor： Tsuyoshi YONEYAMA

IPC: H03B5/36 ,  H03B1/02

CPC classification number: H03B5/36 ,  H03B5/04 ,  H03B5/30 ,  H03B2201/0208 ,  H03B2201/025 ,  H03B2201/038 ,  H03L1/022 ,  H03L1/026 ,  H03L1/028

Abstract: An oscillation circuit includes a temperature compensating section to which electric power is supplied from a main power supply and a backup power supply, an oscillating section, a function of which is compensated by a signal from the temperature compensating section, and a switch and a power-supply monitoring circuit configured to select, when the temperature compensating section is not operating, at least one of the main power supply and the backup power supply and control connection to the temperature compensating section.

Abstract translation: 振荡电路包括从主电源和备用电源供给电力的温度补偿部，其功能由来自温度补偿部的信号补偿的振荡部，以及开关和功率 所述供电监视电路被配置为当所述温度补偿部不工作时，选择所述主电源和所述备用电源和所述温度补偿部的控制连接中的至少一个。

公开(公告)号：US08604889B2

公开(公告)日：2013-12-10

申请号：US12743177

申请日：2008-11-07

Applicant: David L. Duperray

Inventor： David L. Duperray

IPC: H03B1/00

CPC classification number: H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1253 ,  H03B5/1265 ,  H03B5/1278 ,  H03B5/129 ,  H03B2201/038

Abstract: An LC oscillator is provided that achieves improved phase noise performance. A variable frequency oscillator includes a variable supply source, an oscillator tank circuit, a variable capacitance circuit comprising MOS switches, and an oscillator tank voltage common mode adjustment circuit. When the capacitance of the variable capacitance circuit is varied to vary an output frequency of the variable frequency oscillator, the common mode voltage is adjusted to reduce transitions of the MOS switches between an inversion state and a depletion state during excursions of an output signal through one cycle of oscillation.

Abstract translation: 提供了一种可提高相位噪声性能的LC振荡器。 可变频率振荡器包括可变电源，振荡器电路，包括MOS开关的可变电容电路和振荡器电压共模调整电路。 当可变电容电路的电容改变以改变可变频率振荡器的输出频率时，调节共模电压以减少输出信号通过一个偏移期间的反相状态和耗尽状态之间的MOS开关的转变 振荡周期。

公开(公告)号：US06501338B2

公开(公告)日：2002-12-31

申请号：US09870816

申请日：2001-05-31

Applicant: Kazuhiro Nakano ,  Hiroki Noumi ,  Isao Hasegawa

Inventor： Kazuhiro Nakano ,  Hiroki Noumi ,  Isao Hasegawa

IPC: H03B512

CPC classification number: H03B5/1847 ,  H03B5/1203 ,  H03B5/1231 ,  H03B5/1243 ,  H03B5/1262 ,  H03B2201/0208 ,  H03B2201/0258 ,  H03B2201/038

Abstract: In a three-band switching oscillator, a switching circuit is provided to switch the operating conditions of a first and second voltage-controlled oscillator and to switch an oscillation frequency band of the first voltage-controlled oscillator. The switching circuit switches a first switch in accordance with a switching voltage inputted to a first switching terminal and switches an oscillation frequency band in accordance with a switching voltage inputted to a second switching terminal. Only when a high-level switching voltage is inputted to the second switching terminal, the second switch is placed into an open condition by a high-level switching voltage inputted to the first switching terminal and placed into a closed condition by a low-level switching voltage inputted thereto, and when a low-level switching voltage is inputted to the second switching terminal, the second switch is placed into the open condition irrespective of the switching voltage inputted to the first switching terminal.

Abstract translation: 在三频带开关振荡器中，提供开关电路来切换第一和第二压控振荡器的工作条件，并切换第一压控振荡器的振荡频带。 开关电路根据输入到第一开关端子的开关电压来切换第一开关，并且根据输入到第二开关端子的开关电压来切换振荡频带。 仅当向第二开关端子输入高电平开关电压时，通过输入到第一开关端子的高电平开关电压将第二开关置于开启状态，并通过低电平开关置于闭合状态 电压，并且当向第二开关端子输入低电平切换电压时，与输入到第一开关端子的开关电压无关地将第二开关置于打开状态。

公开(公告)号：US20190013779A1

公开(公告)日：2019-01-10

申请号：US15641581

申请日：2017-07-05

Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC

Inventor： Wookang JIN ,  Sungwon YUN ,  Chan SON

IPC: H03B5/24

CPC classification number: H03B5/24 ,  H03B2200/0038 ,  H03B2200/0048 ,  H03B2200/0062 ,  H03B2200/0064 ,  H03B2201/038 ,  H03K3/0231

Abstract: An oscillator circuit includes an oscillator having a source node and a sink node, the oscillator being configured to generate a pulse signal having an output voltage that corresponds to a charging or discharging operation of a capacitor, a first bias current generating circuit coupled to the source and the sink nodes of the oscillator and configured to supply a first bias current to the oscillator, the first bias current being adjustable, and a second bias current generating circuit coupled to the source and the sink nodes of the oscillator and configured to supply a second bias current to the oscillator, the second bias current being adjustable. The first bias current and the second bias current are used to tune a frequency range of the oscillator.

公开(公告)号：US20170272083A1

公开(公告)日：2017-09-21

申请号：US15450579

申请日：2017-03-06

Applicant: SEIKO EPSON CORPORATION

Inventor： Takuya OWAKI ,  Naohisa OBATA

IPC: H03L1/04 ,  H03B1/02 ,  H03B5/32

CPC classification number: H03L1/04 ,  H03B1/02 ,  H03B5/04 ,  H03B5/32 ,  H03B2200/009 ,  H03B2201/038 ,  H03L1/026 ,  H03L1/028

Abstract: A temperature-compensated oscillator includes a resonator element, an oscillating circuit, and a temperature compensation circuit, and in a case of varying temperature in a temperature range of ±5° C. centered on a reference temperature in intervals of 6 minutes, and assuming observation period as τ, a wander performance fulfills a condition that an MTIE value is equal to or shorter than 6 ns in a range of 0 s

公开(公告)号：US08710937B1

公开(公告)日：2014-04-29

申请号：US13443147

申请日：2012-04-10

Applicant: Sehat Sutardja

Inventor： Sehat Sutardja

IPC: H03B5/12 ,  H03L5/00

CPC classification number: H03B5/1228 ,  H03B5/1212 ,  H03B5/1215 ,  H03B5/1278 ,  H03B5/129 ,  H03B2200/0062 ,  H03B2201/031 ,  H03B2201/038 ,  H03L5/00

Abstract: An apparatus includes a tank circuit of a voltage controlled oscillator. A pair of alternating current coupling capacitors respectively couple the gates of the pair of transistors to the drains of the pair of transistors. A bias circuit is coupled to the gates of the pair of transistors and biases the transistors in accordance with a bias voltage such that the transistors alternatingly turn on during a plurality of peaks of an oscillating signal of the tank circuit and the transistors turn off during a plurality of crossing points of the oscillating signal. A feedback loop may be configured to detect a peak oscillating amplitude of the oscillating signal and adjust a bias voltage of the bias circuit based on the peak oscillating amplitude. Also, a supply capacitor may be coupled to the tank circuit and to the transistors to provide an instantaneous current to the VCO.

Abstract translation: 一种装置包括压控振荡器的储能电路。 一对交流耦合电容器将该对晶体管的栅极分别耦合到该对晶体管的漏极。 偏置电路耦合到该对晶体管的栅极并根据偏置电压偏置晶体管，使得晶体管在多个峰值之间交替地导通，并且晶体管在 多个交叉点的振荡信号。 反馈回路可以被配置为检测振荡信号的峰值振荡幅度，并且基于峰值振荡幅度来调整偏置电路的偏置电压。 此外，电源电容器可以耦合到储能电路和晶体管以向VCO提供瞬时电流。

公开(公告)号：US08692622B2

公开(公告)日：2014-04-08

申请号：US13236608

申请日：2011-09-19

Applicant: Michael M. Green ,  Xiaoyan Gui

Inventor： Michael M. Green ,  Xiaoyan Gui

IPC: H03K3/03 ,  H03B7/00 ,  H03C3/22 ,  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。

公开(公告)号：US06323738B1

公开(公告)日：2001-11-27

申请号：US09604721

申请日：2000-06-28

Applicant: Akihiko Yoshizawa ,  Shuichi Takada

Inventor： Akihiko Yoshizawa ,  Shuichi Takada

IPC: H03B502

CPC classification number: H03B5/24 ,  H03B2201/038 ,  H03K3/0231 ,  H03L1/00 ,  H03L5/00

Abstract: A voltage-controlled oscillator comprises a level converting circuit, an amplitude controller, a voltage-controlled oscillation section having differential delay cells connected in a ring form, and an output level converting circuit. The level converting circuit has limiters which respectively limit a maximum value and a minimum value of a control current. Those limiters permit only a region where the voltage-controlled oscillation section properly performs its oscillating operation to be used.

Abstract translation: 压控振荡器包括电平转换电路，幅度控制器，具有以环形形式连接的差分延迟单元的压控振荡部分和输出电平转换电路。 电平转换电路具有分别限制控制电流的最大值和最小值的限制器。 这些限制器仅允许使用压控振荡部分适当地执行其振荡操作的区域。

公开(公告)号：US5493715A

公开(公告)日：1996-02-20

申请号：US283329

申请日：1994-08-01

Applicant: Scott R. Humphreys ,  Robert M. Gorday

Inventor： Scott R. Humphreys ,  Robert M. Gorday

IPC: H03B1/00 ,  H03B5/12 ,  H03J1/00 ,  H04B1/16 ,  H03B5/00

CPC classification number: H03J1/0008 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1293 ,  H03B2200/004 ,  H03B2200/0048 ,  H03B2201/0208 ,  H03B2201/035 ,  H03B2201/038

Abstract: A voltage controlled tunable resonant circuit (100) has at least two resonant frequency ranges and reduced self modulation, and includes a resonant element (120), a variable reactance element (130), and a first voltage variable capacitor (VVC) (150). The variable reactance element (130) is coupled to the resonant element (120). The VVC (150) has two fixed capacitance values corresponding to two fixed capacitance bias voltage ranges, and is coupled to the resonant element (120) and the variable reactance element (130). The first VVC (150) is controlled by a first DC bias voltage (190) selected to be within one of the two fixed capacitance bias voltage ranges to establish one of the two resonant frequency ranges over which the voltage controlled tunable resonant circuit (100) is tuned by variation of the variable reactance element (130).

Abstract translation: 电压控制可调谐振荡电路（100）具有至少两个谐振频率范围和减小的自调制，并且包括谐振元件（120），可变电抗元件（130）和第一电压可变电容器（VVC） 。 可变电抗元件（130）耦合到谐振元件（120）。 VVC（150）具有对应于两个固定电容偏置电压范围的两个固定电容值，并且耦合到谐振元件（120）和可变电抗元件（130）。 第一VVC（150）由选择为在两个固定电容偏置电压范围之一内的第一DC偏置电压（190）控制，以建立两个谐振频率范围中的一个，电压可控谐振电路（100） 由可变电抗元件（130）的变化进行调谐。