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142 条记录 (耗时 0.017 秒)

    CHIRP GENERATOR
    1.
    发明申请
    CHIRP GENERATOR 审中-公开

    公开(公告)号：US20180191302A1

    公开(公告)日：2018-07-05

    申请号：US15832857

    申请日：2017-12-06

    申请人： NXP B.V.

    发明人： Tarik Saric ,  Juan Felipe Osorio Tamayo

    IPC分类号： H03B5/12 ,  H03L7/099

    CPC分类号： H03B5/1243 ,  G01S7/032 ,  G01S7/35 ,  G01S13/343 ,  H03B5/1212 ,  H03B5/1262 ,  H03B5/1265 ,  H03C3/0925 ,  H03C3/0941 ,  H03C3/0958 ,  H03L7/099 ,  H03L7/197 ,  H03L2207/06

    摘要： A chirp-generator comprising a phase-detector for providing a phase-difference-signal representative of a phase difference between a clock-input-signal and a feedback-signal. A VCO-circuit is configured to provide a chirp-generator-output-signal based on the phase-difference-signal. The VCO-circuit comprises a switched-varactor-bank, which includes a plurality of varactors, and a varactor-switch associated with each of the plurality of varactors. The varactor-switch is configured to selectively control whether or not the associated varactor contributes to the capacitance of the VCO-circuit, based on the state of a varactor-control-signal. The chirp-generator also includes a feedback-component configured to: receive the chirp-generator-output-signal; and apply a variable-multiplication-factor to the chirp-generator-output-signal in order to provide the feedback signal for the phase-detector. A controller provides a sequence of different variable-multiplication-factors to the feedback-component; and provides varactor-control-signals to the plurality of varactors such that the varactors are sequentially controlled such that they contribute to the capacitance of the VCO-circuit.

    System and method for dynamically biasing oscillators for optimum phase noise
    4.
    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。

    LOW POWER WIDE TUNING RANGE OSCILLATOR
    5.
    发明申请
    LOW POWER WIDE TUNING RANGE OSCILLATOR 有权
    低功率调谐范围振荡器

    公开(公告)号：US20160036382A1

    公开(公告)日：2016-02-04

    申请号：US14447478

    申请日：2014-07-30

    申请人： Texas Instruments Incorporated

    发明人： Sudipto Chakraborty

    IPC分类号： H03B5/12

    CPC分类号： H03B5/1215 ,  H03B1/00 ,  H03B5/08 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/125 ,  H03B5/1262 ,  H03B5/1296 ,  H03B2200/0082 ,  H03B2201/0266

    摘要： A wide tuning range oscillator system uses multiple active cores with cross-coupled transistors and multiple tapped inductors having windings that can be connected to circuit nodes. These active cores are connected to a pair of symmetric tapping points and are switched ON/OFF by biasing elements. Biasing schemes and the topology of the individual cross-coupled cores may be different from each other. The tapping points are symmetrically arranged around the center point of the inductor. One or more of the active cores may be enabled for tuning the center frequency of the oscillator system.

    摘要翻译： 宽调谐范围振荡器系统使用具有交叉耦合晶体管的多个有源核心和具有可以连接到电路节点的绕组的多个抽头电感器。 这些活性芯连接到一对对称的攻丝点，并通过偏置元件接通/断开。 各个交叉耦合核心的偏置方案和拓扑可能彼此不同。 攻丝点围绕电感器的中心点对称排列。 可以使能一个或多个有源内核来调谐振荡器系统的中心频率。

    Wideband multi-mode VCO
    6.
    发明授权
    Wideband multi-mode VCO 有权
    宽带多模式VCO

    公开(公告)号：US08294528B2

    公开(公告)日：2012-10-23

    申请号：US12979659

    申请日：2010-12-28

    申请人： Guansheng Li ,  Li Liu ,  Yiwu Tang

    发明人： Guansheng Li ,  Li Liu ,  Yiwu Tang

    IPC分类号： H03B5/12 ,  H03K3/30 ,  H03C3/22

    CPC分类号： H03B5/1228 ,  H03B5/1212 ,  H03B5/1225 ,  H03B5/1256 ,  H03B5/1262 ,  H03B5/1281 ,  H03B5/1296

    摘要： A VCO includes a transformer-based resonator that has a first LC tank and a second LC tank. The resonator has an even resonant mode and an odd resonant mode. The VCO further includes an active transconductance network that is coupled to a two-terminal port of the first tank and is also coupled to a two-terminal port of the second tank. A first terminal of the port of the first tank is capacitively coupled to a first terminal of the port of the second tank. A second terminal of the port of the first tank is capacitively coupled to a second terminal of the port of the second tank. The active transconductance network causes the resonator to resonate in a selectable one of the even and odd resonant modes depending on a digital control signal. The VCO is fine tuned by changing the capacitances of capacitors of the tanks.

    摘要翻译： VCO包括具有第一LC箱和第二LC箱的基于变压器的谐振器。 谐振器具有均匀谐振模式和奇数谐振模式。 VCO还包括有源跨导网络，其耦合到第一箱的两端口并且还耦合到第二箱的两端口。 第一罐的端口的第一端子电容耦合到第二罐的端口的第一端子。 第一罐的端口的第二端子电容耦合到第二罐的端口的第二端子。 有源跨导网络使得谐振器根据数字控制信号以偶次谐振模式和奇数谐振模式中的可选择的谐振模式谐振。 通过改变电容器的容量，可以对VCO进行微调。

    MULTI-BAND FREQUENCY OSCILLATING DEVICE
    7.
    发明申请
    MULTI-BAND FREQUENCY OSCILLATING DEVICE 有权
    多频段振荡器件

    公开(公告)号：US20120169426A1

    公开(公告)日：2012-07-05

    申请号：US13379277

    申请日：2010-06-15

    申请人： Emmanuel Chataigner

    发明人： Emmanuel Chataigner

    IPC分类号： H03K3/02

    CPC分类号： H03B5/1228 ,  H03B5/1215 ,  H03B5/1243 ,  H03B5/1262 ,  H03B5/1296 ,  H03B2200/0046 ,  H03B2200/0048 ,  H03B2200/005 ,  H03B2200/0058

    摘要： An oscillating device is provided that has several oscillators. Each oscillator has a capacitive inductive resonant circuit and a flow-through conduction circuit having a negative flow-through conduction. The inductive elements of the oscillators are mutually coupled. Each oscillator also has short-circuit or not short-circuit the capacitive element of the oscillator. The oscillating device also has a controllable commutating means arranged to activate one oscillator at a time.

    摘要翻译： 提供了具有多个振荡器的振荡装置。 每个振荡器具有电容性感应谐振电路和具有负的流通导通的流通导通电路。 振荡器的电感元件相互耦合。 每个振荡器也具有短路或不短路振荡器的电容元件。 振荡装置还具有一个可控整流装置，每次一个激活一个振荡器。

    Voltage-controlled variable frequency oscillation circuit and signal processing circuit
    8.
    发明授权
    Voltage-controlled variable frequency oscillation circuit and signal processing circuit 失效
    压控变频振荡电路和信号处理电路

    公开(公告)号：US08076982B2

    公开(公告)日：2011-12-13

    申请号：US12405712

    申请日：2009-03-17

    申请人： Norihito Suzuki

    发明人： Norihito Suzuki

    IPC分类号： H03B5/12

    CPC分类号： H03B5/1228 ,  H03B5/1215 ,  H03B5/1253 ,  H03B5/1262 ,  H03B5/1265 ,  H03B5/1278 ,  H03B5/1293

    摘要： A voltage-controlled variable frequency oscillation circuit, includes: an oscillation circuit section including a resonance circuit which includes a coil and a variable capacitance element, and a negative resistance circuit; and a first resistor connected between the oscillation circuit section and a first one of a pair of terminals of a power supply.

    摘要翻译： 一种压控变频振荡电路，包括：振荡电路部，包括具有线圈和可变电容元件的谐振电路和负电阻电路; 以及连接在所述振荡电路部与电源的一对端子的第一电阻之间的第一电阻。

    INJECTION-LOCKED FREQUENCY DIVIDER
    9.
    发明申请
    INJECTION-LOCKED FREQUENCY DIVIDER 失效
    注射锁频分路器

    公开(公告)号：US20080074199A1

    公开(公告)日：2008-03-27

    申请号：US11561417

    申请日：2006-11-19

    申请人： Sheng-Lyang Jang ,  Yun-Hsueh Chuang ,  Ren-Hong Yen ,  Shao-Hwa Lee

    发明人： Sheng-Lyang Jang ,  Yun-Hsueh Chuang ,  Ren-Hong Yen ,  Shao-Hwa Lee

    IPC分类号： H03L7/00

    CPC分类号： H03L7/099 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1262 ,  H03B5/1296 ,  H03B2200/0074 ,  H03L7/24

    摘要： An injection-locked frequency divider is provided. The injection-locked frequency divider includes a variable reactance unit, a signal injection unit, a first switch, a second switch, a first transformer, and a second transformer. The variable reactance unit, the first switch, the second switch, the first transformer, and the second transformer form a transformer-based LC-tank oscillator. The signal injection unit receives an injection signal. When the injection-locked frequency divider is in a locked state, the transformer-based LC-tank oscillator outputs a frequency division signal. Employing the feedback action of the first transformer and the second transformer, the present invention not only has a wide locking range but also promotes the realization of the low operating voltage.

    摘要翻译： 提供了一种注入锁定分频器。 注入锁定分频器包括可变电抗单元，信号注入单元，第一开关，第二开关，第一变压器和第二变压器。 可变电抗单元，第一开关，第二开关，第一变压器和第二变压器形成基于变压器的LC槽振荡器。 信号注入单元接收注入信号。 当注入锁定分频器处于锁定状态时，基于变压器的LC振荡振荡器输出分频信号。 采用第一变压器和第二变压器的反馈动作，本发明不仅具有宽锁定范围，而且促进了低工作电压的实现。