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。

公开(公告)号：US5144263A

公开(公告)日：1992-09-01

申请号：US717988

申请日：1991-06-20

Applicant: Josef Fenk

Inventor： Josef Fenk

IPC: H03B1/00 ,  H03B5/12 ,  H03L5/00

CPC classification number: H03L5/00 ,  H03B5/1209 ,  H03B5/1231 ,  H03B5/1271 ,  H03B2200/0066 ,  H03B2201/031 ,  H03B2201/038

Abstract: An oscillator includes at least one oscillator transistor having collector, emitter and base leads, a controllable current source connected between the emitter lead of the at least one oscillator transistor and a supply potential, and a frequency-determining element, such as an oscillating circuit, connected at least to the base or collector lead of the at least one oscillator transistor. A method for controlling the amplitude of the output signal of the oscillator includes supplying a direct voltage variation at the emitter lead of the at least one oscillator transistor resulting from a change in amplitude of a signal applied to the base lead of the at least one oscillator transistor as a controlled variable for the current of the controllable current source. The oscillator may also include a control amplifier. The emitter lead of the at least one oscillator transistor is connected to one input of the control amplifier and the other input of the control amplifier is connected to a reference potential. The reference potential is in a fixed relationship with a direct signal component of a signal present at the base lead of the at least one oscillator transistor. The current of the controllable current source is adjusted as a function of an output variable at the control amplifier.

Abstract translation: 振荡器包括具有集电极，发射极和基极引线的至少一个振荡晶体管，连接在至少一个振荡晶体管的发射极引线和电源电位之间的可控电流源，以及诸如振荡电路的频率确定元件， 至少连接到至少一个振荡晶体管的基极或集电极引线。 用于控制振荡器的输出信号的振幅的方法包括：由施加到至少一个振荡器的基极引线的信号的幅度变化引起的至少一个振荡晶体管的发射极引线处的直接电压变化 晶体管作为可控电流源的电流的受控变量。 振荡器还可以包括控制放大器。 所述至少一个振荡晶体管的发射极引线连接到所述控制放大器的一个输入端，并且所述控制放大器的另一输入端连接到参考电位。 参考电位与存在于至少一个振荡晶体管的基极引线上的信号的直接信号分量成固定的关系。 可控电流源的电流作为控制放大器输出变量的函数进行调整。

公开(公告)号：US09929737B2

公开(公告)日：2018-03-27

申请号：US15039105

申请日：2013-12-05

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Lars Sundström ,  Robert Baldemair ,  Ning He

IPC: H03B5/32 ,  H03L7/107 ,  H03L7/099 ,  H04W28/14

CPC classification number: H03L7/1075 ,  H03B5/32 ,  H03B2200/0062 ,  H03B2200/009 ,  H03B2201/038 ,  H03L7/099 ,  H04W28/14

Abstract: A reference oscillator arrangement is provided for a communication apparatus capable of communicating according to a plurality of transport formats. The reference oscillator arrangement comprises a reference oscillator controller; a resonator core comprising a reference resonator and a driving circuit for the reference resonator, wherein the resonator core is arranged to provide an oscillating signal at a frequency of the reference resonator; and a reference oscillator buffer arrangement, connected to the resonator core, comprising an active circuit arranged to provide a reference oscillator output based on the oscillating signal. The reference oscillator controller is arranged to receive information about an applied transport format and control the driving circuit and/or the active circuit based on the information about the applied transport format. An oscillator arrangement, a communication device, methods therefor and a computer program are also disclosed.

公开(公告)号：US09712111B2

公开(公告)日：2017-07-18

申请号：US15014283

申请日：2016-02-03

Applicant: Seiko Epson Corporation

Inventor： Akihiro Fukuzawa

IPC: H03L7/085 ,  H03L7/089 ,  H03B5/32 ,  H03B5/12

CPC classification number: H03B5/32 ,  H03B5/129 ,  H03B2200/0062 ,  H03B2201/0283 ,  H03B2201/038 ,  H03B2202/06

Abstract: An oscillator includes an input terminal, an oscillation circuit section configured to cause a resonator to resonate to output an oscillator signal, a digital input section to which a signal for controlling an oscillation frequency of the oscillation circuit section is input via the input terminal, and a first bias circuit section including a constant current source configured to supply a reference current to the digital input section.