公开(公告)号：US08816786B2

公开(公告)日：2014-08-26

申请号：US13632173

申请日：2012-10-01

Applicant: Tensorcom, Inc.

Inventor： KhongMeng Tham

IPC: H03L5/00 ,  H03B5/36

CPC classification number: H03B5/364 ,  H03B5/06 ,  H03B2200/0088 ,  H03B2200/0094 ,  H03B2201/031 ,  H03L5/00

Abstract: A large gain is used to start up the oscillation of the crystal quickly. Once the oscillation starts, the amplitude is detected. A control circuit determines based on the measured amplitude to disable a low resistance path in the controlled switch array to reduce the applied gain below the power dissipation specification of the crystal. Another technique introduces a mixed-signal controlled power supply multi-path resistive array which tailors the maximum current to the crystal. A successive approximation register converts the amplitude into several partitions and enables/disables one of several power routing paths to the inverter of the oscillator. This allows a better match between the crystal selected by the customer and the on-chip drive circuitry to power up the oscillator without stressing the crystal. The “l/f” noise of the oscillator circuit is minimized by operating transistors in the triode region instead of the linear region.

Abstract translation: 使用大的增益快速启动晶体振荡。 一旦振荡开始，就检测振幅。 控制电路基于测量的幅度来确定禁用受控开关阵列中的低电阻路径，以将施加的增益降低到低于晶体的功率耗散规格。 另一种技术引入了一种混合信号控制电源多路径电阻阵列，可以调整晶体的最大电流。 逐次逼近寄存器将振幅转换成几个分区，并使能/禁用振荡器的反相器的几个电源路由路径之一。 这允许由客户选择的晶体和片上驱动电路之间更好地匹配，以在不强调晶体的情况下加电振荡器。 通过在三极管区域中操作晶体管而不是线性区域来使振荡器电路的“l / f”噪声最小化。

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：US20090289732A1

公开(公告)日：2009-11-26

申请号：US12434807

申请日：2009-05-04

Applicant: Daisuke MIYASHITA

Inventor： Daisuke MIYASHITA

IPC: H03B5/18

CPC classification number: H03B5/1228 ,  H03B5/1215 ,  H03B5/1225 ,  H03B5/1243 ,  H03B5/1265 ,  H03B2200/0046 ,  H03B2200/0048 ,  H03B2200/005 ,  H03B2201/031

Abstract: A semiconductor integrated circuit includes: a resonance circuit configured to determine an oscillation frequency; a first MOS transistor connected to the resonance circuit and configured to constitute an oscillation unit for delivering an oscillation output having the oscillation frequency; a second MOS transistor connected in parallel with the first MOS transistor; and a control unit configured to turn on and off the second MOS transistor according to the oscillation frequency, thereby enabling an equivalent gate width based on the first and second MOS transistors to be increased and decreased. Consequently, there is obtained an oscillation output having reduced phase noise, while an adequate oscillation margin is maintained.

Abstract translation: 半导体集成电路包括：谐振电路，被配置为确定振荡频率; 连接到谐振电路的第一MOS晶体管，其构成为构成用于输送具有振荡频率的振荡输出的振荡单元; 与第一MOS晶体管并联连接的第二MOS晶体管; 以及控制单元，被配置为根据振荡频率接通和断开第二MOS晶体管，从而能够增加和减少基于第一和第二MOS晶体管的等效栅极宽度。 因此，获得具有相位噪声降低的振荡输出，同时保持足够的振荡余量。

公开(公告)号：US20090273404A1

公开(公告)日：2009-11-05

申请号：US12432743

申请日：2009-04-29

Applicant: Robert Hay

Inventor： Robert Hay

IPC: H03H9/00 ,  H01L41/08

CPC classification number: H03B5/326 ,  H03B2201/025 ,  H03B2201/0291 ,  H03B2201/031 ,  H03H9/6403

Abstract: A frequency adjustable surface acoustic wave oscillator uses circuitry in which the phase relationship between the corresponding input and output signals and the voltage applied to or received by transducer fingers is controlled in such a manner that the frequency of the surface acoustic wave oscillator is arbitrarily controlled over a wide range by digital means. This provides an oscillator that exhibits a wide tunable frequency range while providing low phase noise.

Abstract translation: 频率可调声表面波振荡器使用电路，其中相应的输入和输出信号之间的相位关系以及施加到或由换能器指状态接收的电压被控制为使声表面波振荡器的频率被任意控制 数字化的广泛范围。 这提供了一个振荡器，具有宽的可调谐频率范围，同时提供低相位噪声。

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：US4596966A

公开(公告)日：1986-06-24

申请号：US708640

申请日：1985-03-06

Applicant: Henri Derewonko ,  Guy Bessonneau ,  Marc Camiade ,  Alain Bert

Inventor： Henri Derewonko ,  Guy Bessonneau ,  Marc Camiade ,  Alain Bert

IPC: H03B1/00 ,  H03B5/18 ,  H03B5/12

CPC classification number: H03B5/1852 ,  H03B2200/0028 ,  H03B2200/004 ,  H03B2201/0208 ,  H03B2201/031

Abstract: The invention relates to an ultra-high frequency oscillator operating in the X band. The oscillator circuit comprises a common gate-connected field effect transistor. The source connected tuning circuit comprises a variable capacitor of the varactor type controlled by a voltage and a choke in parallel. The control voltage is decoupled from earth by a capacitor. According to the invention, the transistor, the varactor and the capacitor are integrated into the same box or case in the form of a micromodule. The capacitor acts as a base for the transistor and the varactor, which are welded in juxtaposed manner. The length of the connection between the varactor and the source of the transistor has a minimum value, which makes it possible to broaden the linear frequency band as a function of the control voltage.

Abstract translation: 本发明涉及一种在X频段工作的超高频振荡器。 振荡器电路包括公共栅极连接的场效应晶体管。 源极连接调谐电路包括由电压和扼流器并联控制的变容二极管类型的可变电容器。 控制电压由电容器与地耦合。 根据本发明，晶体管，变容二极管和电容器以微型模块的形式集成在相同的盒子或壳体中。 电容器作为晶体管和变容二极管的基极，并联焊接。 变容二极管和晶体管源极之间的连接长度具有最小值，这使得可以根据控制电压来扩大线性频带。

公开(公告)号：US20180241402A1

公开(公告)日：2018-08-23

申请号：US15577973

申请日：2016-05-13

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Christian Elgaard ,  Lars Sundström

IPC: H03L5/00 ,  H03B5/12

CPC classification number: H03L5/00 ,  H03B5/1278 ,  H03B2201/031

Abstract: A frequency generation solution controls an oscillator amplitude using two feedback paths to generate high frequency signals with lower power consumption and lower noise. A first feedback path provides continuous control of the oscillator amplitude responsive to an amplitude detected at the oscillator output. A second feedback path provides discrete control of the amplitude regulating parameter(s) of the oscillator responsive to the detected oscillator amplitude. Because the second feedback path enables the adjustment of the amplitude regulating parameter(s), the second feedback path enables an amplifier in the first feedback path to operate at a reduced gain, and thus also at a reduced power and a reduced noise, without jeopardizing the performance of the oscillator.

公开(公告)号：US20180076768A1

公开(公告)日：2018-03-15

申请号：US15266975

申请日：2016-09-15

Applicant: Avago Technologies General IP (Singapore) Pte. Ltd .

Inventor： Jacob K. Easter ,  Christopher D. Macchietto ,  Richard Niescier

IPC: H03B5/32 ,  H03G3/20

CPC classification number: H03G3/3036 ,  H03B5/364 ,  H03B2201/031

Abstract: At least one example embodiment provides a controller to sample a first signal. The first signal indicates an initial amplitude of an output signal of an oscillator circuit. The controller selects a step amount based on the first signal and a target amplitude of the output signal. The controller generates a control signal for the oscillator circuit based on the selected step amount. The control signal indicates a change in gain for the oscillator circuit according to the selected step amount.

公开(公告)号：US20170257063A1

公开(公告)日：2017-09-07

申请号：US15446069

申请日：2017-03-01

Applicant: Commissariat à I'Energie Atomique et aux Energies Alternatives

Inventor： Baudouin MARTINEAU ,  José-Luis GONZALEZ JIMENEZ ,  Aurélien LARIE

IPC: H03B5/12

CPC classification number: H03B5/1234 ,  H01L21/84 ,  H03B5/1212 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1278 ,  H03B2200/004 ,  H03B2200/0062 ,  H03B2200/009 ,  H03B2201/031 ,  H03F3/193 ,  H03L1/00 ,  H03L5/00 ,  H03L7/04 ,  H03L7/06

Abstract: A voltage-controlled oscillator, including a voltage-controlled LC resonator including at least one first output node; an amplifier including at least one first dual-gate MOS transistor including first and second gates, coupling the first output node to a second node of application of a reference potential; and a regulation circuit capable of applying to the second gate of the first transistor a bias voltage variable according to the amplitude of the oscillations of a signal delivered on the first output node of the oscillator.

公开(公告)号：US07116180B2

公开(公告)日：2006-10-03

申请号：US10697329

申请日：2003-10-31

Applicant: Mutsumi Hamaguchi ,  Masafumi Yamanoue

Inventor： Mutsumi Hamaguchi ,  Masafumi Yamanoue

IPC: H03B1/00

CPC classification number: H03B5/1212 ,  H03B5/1221 ,  H03B5/1228 ,  H03B5/1243 ,  H03B2201/0208 ,  H03B2201/031

Abstract: A voltage-controlled oscillator has a voltage-controlled oscillation circuit that oscillates at a frequency according to a control voltage and a limiter circuit that limits the output of the voltage-controlled oscillator to a predetermined level. This configuration makes it possible to maintain a constant output level irrespective of the oscillation frequency.

Abstract translation: 压控振荡器具有根据控制电压的频率振荡的压控振荡电路和将压控振荡器的输出限制在预定水平的限幅电路。 这种配置使得可以保持恒定的输出电平，而与振荡频率无关。