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28 条记录 (耗时 0.012 秒)

    Tunable LC oscillator with common mode voltage adjustment
    1.
    发明授权
    Tunable LC oscillator with common mode voltage adjustment 有权
    可调谐LC振荡器，共模电压调节

    公开(公告)号：US08604889B2

    公开(公告)日：2013-12-10

    申请号：US12743177

    申请日：2008-11-07

    申请人： David L. Duperray

    发明人： David L. Duperray

    IPC分类号： H03B1/00

    CPC分类号： H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1253 ,  H03B5/1265 ,  H03B5/1278 ,  H03B5/129 ,  H03B2201/038

    摘要： 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.

    摘要翻译： 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。

    WIDEBAND DIGITALLY-CONTROLLED OSCILLATOR (DCO) AND DIGITAL BROADCASTING RECEIVER HAVING THE SAME
    2.
    发明申请
    WIDEBAND DIGITALLY-CONTROLLED OSCILLATOR (DCO) AND DIGITAL BROADCASTING RECEIVER HAVING THE SAME 有权
    宽带数字控制振荡器（DCO）和数字广播接收机

    公开(公告)号：US20100215123A1

    公开(公告)日：2010-08-26

    申请号：US12711414

    申请日：2010-02-24

    申请人： Li YANG ,  Hyun-koo KANG ,  Dae-yeon KIM ,  LuoSheng LI

    发明人： Li YANG ,  Hyun-koo KANG ,  Dae-yeon KIM ,  LuoSheng LI

    IPC分类号： H04L27/00 ,  H03B5/12

    CPC分类号： H04L27/0014 ,  H03B5/1215 ,  H03B5/1225 ,  H03B5/1231 ,  H03B5/1265 ,  H03B5/1271 ,  H03B5/1278 ,  H03B5/129 ,  H03B5/1293 ,  H03L7/099 ,  H03L7/10 ,  H03L2207/06 ,  H04L2027/0016

    摘要： A wideband digitally-controlled oscillator (DCO) is provided. The wideband DCO includes an active element which is driven by a first digital control signal; a single inductor which is connected to the active element in parallel, and comprises fixed inductance; and a plurality of capacitors which are connected to the single inductor in parallel, and vary operating frequency by being selectively turned on or off by a second digital control signal. Accordingly, the wideband DCO capable of operating in a wideband frequency range using a single inductor is provided, and if the wideband DCO is implemented using a single integrated circuit (IC) chip, the size of chip is reduced as the single inductor is used.

    摘要翻译： 提供宽带数字控制振荡器（DCO）。 宽带DCO包括由第一数字控制信号驱动的有源元件; 单个电感器并联连接到有源元件，并包括固定电感; 以及并联连接到单个电感器的多个电容器，并且通过由第二数字控制信号选择性地导通或关断来改变工作频率。 因此，提供能够使用单个电感器在宽带频率范围内工作的宽带DCO，并且如果使用单个集成电路（IC）芯片实现宽带DCO，则使用单个电感器来减小芯片的尺寸。

    VOLTAGE CONTROLLED OSCILLATOR AND METHOD CAPABLE OF REDUCING PHASE NOISE AND JITTER WITH STARTUP GAIN
    3.
    发明申请
    VOLTAGE CONTROLLED OSCILLATOR AND METHOD CAPABLE OF REDUCING PHASE NOISE AND JITTER WITH STARTUP GAIN 失效
    电压控制振荡器和能够减少相位噪声的抖动和具有启动增益的抖动

    公开(公告)号：US20080068097A1

    公开(公告)日：2008-03-20

    申请号：US11757459

    申请日：2007-06-04

    申请人： Ki-Hyuk Sung

    发明人： Ki-Hyuk Sung

    IPC分类号： H03L7/099 ,  H03B5/12 ,  H03L5/00

    CPC分类号： H03L7/099 ,  H03B5/06 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/129 ,  H03L5/00 ,  H03L7/10

    摘要： A voltage-controlled oscillator includes: a bias voltage generator operating to generate first and second bias voltages in response to a control signal; a voltage-controlled oscillation circuit connected to a control node and configured to generate oscillation signals in response to an input voltage; a selection signal generator operating to generate a selection signal in response each to the oscillation signals; and a selection circuit operating to select one of the first and second bias voltages in response to the selection signal and outputting the selected bias voltage to the control node.

    摘要翻译： 压控振荡器包括：偏置电压发生器，用于响应于控制信号产生第一和第二偏置电压; 连接到控制节点并被配置为响应于输入电压产生振荡信号的压控振荡电路; 操作用于响应于所述振荡信号产生选择信号的选择信号发生器; 以及选择电路，其操作以响应于所述选择信号选择所述第一和第二偏置电压之一并将所选择的偏置电压输出到所述控制节点。

    Low power voltage controlled oscillator (VCO)
    6.
    发明授权
    Low power voltage controlled oscillator (VCO) 失效
    低功耗压控振荡器（VCO）

    公开(公告)号：US08710937B1

    公开(公告)日：2014-04-29

    申请号：US13443147

    申请日：2012-04-10

    申请人： Sehat Sutardja

    发明人： Sehat Sutardja

    IPC分类号： H03B5/12 ,  H03L5/00

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

    摘要： 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.

    摘要翻译： 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。

    Circuit arrangement for generating a reference current and oscillator circuit having the circuit arrangement
    7.
    发明授权
    Circuit arrangement for generating a reference current and oscillator circuit having the circuit arrangement 有权
    用于产生具有电路装置的参考电流和振荡器电路的电路装置

    公开(公告)号：US07098752B2

    公开(公告)日：2006-08-29

    申请号：US10931173

    申请日：2004-08-31

    申请人： Jürgen Oehm

    发明人： Jürgen Oehm

    IPC分类号： H03B5/10 ,  H03J7/04 ,  H03L7/099

    CPC分类号： H03B5/1271 ,  H03B5/129 ,  H03B2201/0283

    摘要： A circuit arrangement for generating a reference current and also an oscillator circuit having the circuit arrangement are disclosed the arrangement includes a capacitance connected to an input of a voltage-controlled current source. Two amplifiers having different drive capabilities, between which a switching can be effected, are provided to drive the capacitance. An LC oscillator can be fed with the reference current in a current-controlled manner and at the same time in a particularly low-noise manner.

    摘要翻译： 公开了一种用于产生参考电流的电路装置以及具有电路装置的振荡器电路，该装置包括连接到电压控制电流源的输入的电容。 提供具有不同驱动能力的两个放大器，其间可进行切换以驱动电容。 可以以电流控制的方式和同时以特别低噪声的方式将LC振荡器馈送到参考电流。

    Stabilized oscillator circuit
    8.
    发明授权
    Stabilized oscillator circuit 有权
    稳定振荡电路

    公开(公告)号：US6066991A

    公开(公告)日：2000-05-23

    申请号：US220056

    申请日：1998-12-23

    申请人： Akio Naito ,  Atsushi Ogawa

    发明人： Akio Naito ,  Atsushi Ogawa

    IPC分类号： H03B5/30 ,  H03B5/04 ,  H03B5/12

    CPC分类号： H03B5/04 ,  H03B5/1215 ,  H03B5/1231 ,  H03B5/129

    摘要： A stabilized oscillator circuit is provided with a differential amplifier type oscillator circuit for generating an oscillation signal, and a differential amplifier type buffer output circuit for amplifying and outputting the oscillation signal. The stabilized oscillator is also provided with a frequency variation stabilizing circuit. This circuit controls the amount of current of the constant current source I2 of the buffer output circuit, in accordance with fluctuations of the power supply voltage applied to the oscillator circuit. Accordingly, the collector-base capacitance of the transistors of the buffer output circuit is controlled, and the oscillation frequency variations are suppressed in spite of fluctuations of the power supply voltage.

    摘要翻译： 稳定振荡器电路设置有用于产生振荡信号的差分放大器型振荡器电路和用于放大和输出振荡信号的差分放大器型缓冲器输出电路。 稳定振荡器还具有频率变化稳定电路。 该电路根据施加到振荡器电路的电源电压的波动来控制缓冲器输出电路的恒流源I2的电流量。 因此，缓冲器输出电路的晶体管的集电极基极电容被控制，并且尽管电源电压波动也抑制了振荡频率变化。

    System and method for dynamically biasing oscillators for optimum phase noise
    10.
    发明授权
    System and method for dynamically biasing oscillators for optimum phase noise 有权
    用于动态偏置振荡器以获得最佳相位噪声的系统和方法

    公开(公告)号：US09444400B2

    公开(公告)日：2016-09-13

    申请号：US14666084

    申请日：2015-03-23

    申请人： QUALCOMM Incorporated

    发明人： Mazhareddin Taghivand ,  Keplin Victor Johansen

    IPC分类号： H03B5/12

    CPC分类号： H03B5/1262 ,  H03B5/1203 ,  H03B5/1206 ,  H03B5/1209 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1265 ,  H03B5/129

    摘要： Systems and methods for biasing frequency oscillators to minimize phase noise are disclosed. The system may comprise a tank circuit having an inductor, at least a first coupling capacitor and a second coupling capacitor. The system may further comprise a varactor circuit electrically connected to the first coupling capacitor and the second coupling capacitor. The system may further comprise at least one first metal oxide semiconductor (MOS) device electrically connected in shunt with the tank circuit and a bias voltage. The at least one first MOS device may be electrically connected to a first gate bias voltage configured to bias the at least one first MOS device such that a first gate-to-source voltage of the at least one first MOS device remains below the first threshold voltage.

    摘要翻译： 公开了用于偏置频率振荡器以最小化相位噪声的系统和方法。 该系统可以包括具有电感器，至少第一耦合电容器和第二耦合电容器的振荡电路。 该系统还可以包括电连接到第一耦合电容器和第二耦合电容器的变容二极管电路。 该系统可以进一步包括至少一个第一金属氧化物半导体（MOS）器件，其电连接到与谐振电路并联的偏置电压。 至少一个第一MOS器件可以电连接到第一栅极偏置电压，其被配置为偏置至少一个第一MOS器件，使得至少一个第一MOS器件的第一栅极至源极电压保持低于第一阈值 电压。