公开(公告)号：US07375598B2

公开(公告)日：2008-05-20

申请号：US11009495

申请日：2004-12-10

申请人： Chih-Ming Hung ,  Dirk Leipold ,  Nathen Barton

发明人： Chih-Ming Hung ,  Dirk Leipold ,  Nathen Barton

IPC分类号： H03B5/00

CPC分类号： H03B5/1296 ,  H03B5/1209 ,  H03B5/1256 ,  H03B5/1287

摘要： System and method for increasing the frequency tuning range of a RF/microwave LC oscillator. A preferred embodiment comprises a voltage controlled oscillator (VCO) configured to generate an output signal at a frequency that is dependent upon a magnitude of an input voltage level and an effective inductance of an inductive load and a variable inductor coupled to the VCO. The variable inductor comprises a primary inductor coupled to the VCO to produce a magnetic field based upon a current flowing through the primary inductor and a secondary inductor magnetically coupled to the primary inductor, the secondary inductor to affect the magnitude of the effective inductance of the primary inductor.

摘要翻译： 用于增加RF /微波LC振荡器的频率调谐范围的系统和方法。 优选实施例包括压控振荡器（VCO），其被配置为以取决于输入电压电平的大小和耦合到VCO的电感性负载和可变电感器的有效电感的频率来产生输出信号。 可变电感器包括耦合到VCO的初级电感器，以基于流过初级电感器的电流和与主电感器磁耦合的次级电感器产生磁场，次级电感器影响主电感器的有效电感的幅度 电感。

公开(公告)号：US09634607B2

公开(公告)日：2017-04-25

申请号：US14204542

申请日：2014-03-11

申请人： QUALCOMM Incorporated

发明人： Thinh Cat Nguyen ,  Jeongsik Yang ,  Roger Thomas Brockenbrough ,  Ara Bicakci ,  Anup Savla ,  Shen Wang

IPC分类号： H03B5/12 ,  H04B1/40

CPC分类号： H03B5/1212 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1237 ,  H03B5/1262 ,  H03B5/1278 ,  H03B5/1287 ,  H03B2200/0038 ,  H03B2200/0082 ,  H03B2200/009 ,  H04B1/40

摘要： Certain aspects of the present disclosure generally relate to voltage-controlled oscillators (VCOs) using a lowered or an adjustable negative transconductance (−gm) compared to conventional VCOs. This −gm degeneration technique suppresses the noise injected into an inductor-capacitor (LC) tank of the VCO, thereby providing lower signal-to-noise ratio (SNR) for a given VCO voltage swing, lower power consumption, and decreased phase noise. One example VCO generally includes a resonant tank circuit, an active negative transconductance circuit connected with the resonant tank circuit, and a bias current circuit for sourcing or sinking a bias current through the resonant tank circuit and the active negative transconductance circuit to generate an oscillating signal. The active negative transconductance circuit includes cross-coupled transistors and an impedance connected between the cross-coupled transistors and a reference voltage.

公开(公告)号：US09172328B2

公开(公告)日：2015-10-27

申请号：US14504875

申请日：2014-10-02

申请人： Samsung Electronics Co., Ltd.

发明人： Sang-Hun Lee ,  Jong-Shin Shin

IPC分类号： H03L7/06 ,  H03B7/06 ,  H03L7/089 ,  H03L7/099

CPC分类号： H03B7/06 ,  H03B5/1215 ,  H03B5/1225 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1278 ,  H03B5/1287 ,  H03J1/005 ,  H03J2200/10 ,  H03L7/089 ,  H03L7/099

摘要： A voltage controlled oscillator (VCO) includes an oscillation frequency signal generation circuit and a transconductance control circuit. The oscillation frequency signal generation circuit has a first transconductance and generates a first oscillation frequency signal and a second oscillation frequency signal based on a voltage control signal and a power supply voltage. The first and second oscillation frequency signals are a pair of differential signals. The oscillation frequency signal generation circuit is configured to output the first oscillation frequency signal from a first output node. The oscillation frequency signal generation circuit is configured to output the second oscillation frequency signal from a second output node. The transconductance control circuit is connected to the first and second output nodes and has a second transconductance. The transconductance control circuit is configured to adjust the second transconductance based on a digital control signal.

摘要翻译： 压控振荡器（VCO）包括振荡频率信号发生电路和跨导控制电路。 振荡频率信号发生电路具有第一跨导，并且基于电压控制信号和电源电压产生第一振荡频率信号和第二振荡频率信号。 第一和第二振荡频率信号是一对差分信号。 振荡频率信号发生电路被配置为从第一输出节点输出第一振荡频率信号。 振荡频率信号发生电路被配置为从第二输出节点输出第二振荡频率信号。 跨导控制电路连接到第一和第二输出节点并且具有第二跨导。 跨导控制电路被配置为基于数字控制信号调整第二跨导。

公开(公告)号：US08093958B2

公开(公告)日：2012-01-10

申请号：US12013440

申请日：2008-01-12

申请人： Justin O'Day ,  Michael Shannon McCorquodale ,  Scott Michael Pernia ,  Nam Duc Nguyen ,  Ralph Beaudouin ,  Sundus Kubba

发明人： Justin O'Day ,  Michael Shannon McCorquodale ,  Scott Michael Pernia ,  Nam Duc Nguyen ,  Ralph Beaudouin ,  Sundus Kubba

IPC分类号： H03L5/00

CPC分类号： H03L5/00 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1253 ,  H03B5/1265 ,  H03B5/1287 ,  H03B5/1293 ,  H03L1/02 ,  H03L7/08

摘要： Exemplary embodiments of the invention provide a reference signal generator having a controlled quality (“Q”) factor. An exemplary apparatus to generate a harmonic reference signal includes a reference resonator, such as an LC-tank, which generates a first reference signal having a resonant frequency, and a plurality of reactance modules couplable to the reference resonator. Each reactance module comprises one or more reactance unit cells, and each reactance unit cell comprises a reactance element coupled in series to a switching element. In exemplary embodiments, the reactance element is a capacitor having a predetermined unit of capacitance, and the switching element is a transistor having a predetermined resistance when in an off state. The ratio of capacitance to resistance is substantially constant for all reactance modules of the plurality of reactance modules.

摘要翻译： 本发明的示例性实施例提供具有受控质量（“Q”）因子的参考信号发生器。 产生谐波参考信号的示例性装置包括产生具有共振频率的第一参考信号的参考谐振器，例如LC槽，以及可耦合到参考谐振器的多个电抗模块。 每个电抗模块包括一个或多个电抗单位电池，并且每个电抗单元包括与开关元件串联耦合的电抗元件。 在示例性实施例中，电抗元件是具有预定电容单位的电容器，并且当处于断开状态时，开关元件是具有预定电阻的晶体管。 对于多个电抗模块的所有电抗模块，电容与电阻的比率基本上是恒定的。

公开(公告)号：US20090201097A1

公开(公告)日：2009-08-13

申请号：US12369021

申请日：2009-02-11

申请人： Marcel A. Kossel ,  Thomas E. Morf ,  Martin Leo Schmatz ,  Jonas R. Weiss

发明人： Marcel A. Kossel ,  Thomas E. Morf ,  Martin Leo Schmatz ,  Jonas R. Weiss

IPC分类号： H03B5/18

CPC分类号： H03B5/1228 ,  H03B5/1215 ,  H03B5/1243 ,  H03B5/1256 ,  H03B5/1287 ,  H03B5/1296 ,  H03B2201/0216

摘要： A continuously tunable inductor with an inductive-capacitive (LC) voltage controlled oscillator (VCO) having a primary coil. The inductor includes a separate isolated secondary coil, a set of transistors composing a closed loop with the secondary coil, a magnetic coupling between the primary coil of the LC VCO and the secondary coil, an electrical coupling between the LC VCO and the set of transistors composing a closed loop with the secondary coil, and means for electric current injection into the closed loop. Such an inductor can be tuned by modulating a mutual inductance, which is magnetically and electrically coupled with the LC VCO by injection of an electric current (I0).

摘要翻译： 具有电感电容（LC）压控振荡器（VCO）的连续可调电感器，具有初级线圈。 电感器包括单独的隔离次级线圈，构成与次级线圈的闭环的一组晶体管，LC VCO的初级线圈与次级线圈之间的磁耦合，LC VCO与该组晶体管之间的电耦合 与次级线圈组成闭环，以及将电流注入闭环的装置。 可以通过调制通过注入电流（I0）与LC VCO磁耦合和电耦合的互感来调谐这种电感器。

公开(公告)号：US20090189706A1

公开(公告)日：2009-07-30

申请号：US12142393

申请日：2008-06-19

申请人： Wei-Yang Lee ,  Jean-Fu Kiang

发明人： Wei-Yang Lee ,  Jean-Fu Kiang

IPC分类号： H03B5/08

CPC分类号： H03B5/1228 ,  H03B5/1215 ,  H03B5/124 ,  H03B5/1268 ,  H03B5/1287

摘要： An inductance-switchable dual-band voltage-controlled oscillation circuit is proposed, which is designed for integration to a high-frequency signal processing system, such as an ultra-wideband (UWB) circuit system, for providing a dual-band voltage-controlled oscillating signal generating function. The proposed voltage-controlled oscillation circuit is characterized by the use of a switchable inductance circuit architecture in lieu of a switchable capacitive circuit architecture for integration to a fixed-inductance circuit architecture to constitute a variable-inductance LC tuning circuit architecture that allows the provision of a dual-band oscillating signal generating function. Further, a current mirror circuit module is used to maintain the quality factor of the LC tuning circuit in both operating modes; a buffer-stage circuit architecture is used to achieve low power consumption, low phase noise, and broad tuning range.

摘要翻译： 提出了一种电感可切换双频带电压控制振荡电路，其设计用于集成到诸如超宽带（UWB）电路系统的高频信号处理系统中，用于提供双频带电压控制 振荡信号发生功能。 所提出的压控振荡电路的特征在于使用可切换的电感电路架构代替可转换的电容电路架构，用于集成到固定电感电路架构，以构成可变电感LC调谐电路架构，其允许提供 双频振荡信号发生功能。 此外，电流镜电路模块用于在两种操作模式下保持LC调谐电路的品质因数; 缓冲级电路架构用于实现低功耗，低相位噪声和宽调谐范围。

公开(公告)号：US20090146750A1

公开(公告)日：2009-06-11

申请号：US12013437

申请日：2008-01-12

申请人： Scott Michael Pernia ,  Michael Shannon McCorquodale ,  Nam Duc Nguyen ,  Justin O'Day ,  Ralph Beaudouin ,  Sundus Kubba

发明人： Scott Michael Pernia ,  Michael Shannon McCorquodale ,  Nam Duc Nguyen ,  Justin O'Day ,  Ralph Beaudouin ,  Sundus Kubba

IPC分类号： H03B5/30 ,  H03B5/12 ,  H03L1/00 ,  H03L5/00

CPC分类号： H03L1/02 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1253 ,  H03B5/1265 ,  H03B5/1287 ,  H03B5/1293 ,  H03L5/00 ,  H03L7/08

摘要： Exemplary embodiments of the invention provide a reference signal generator, system and method. An exemplary apparatus to generate a harmonic reference signal includes a reference resonator, such as an LC-tank, and a common mode controller. The reference resonator generates a first reference signal having a resonant frequency, and the common mode controller maintains substantially constant a common mode voltage level of the reference resonator. An amplitude controller may also be included to maintain substantially constant a magnitude of a peak amplitude of the first reference signal. A temperature-dependent control voltage also may be generated and utilized to maintain the resonant frequency substantially constant or within a predetermined variance of a calibrated or selected frequency.

摘要翻译： 本发明的示例性实施例提供了一种参考信号发生器，系统和方法。 用于产生谐波参考信号的示例性装置包括参考谐振器，例如LC槽和共模控制器。 参考谐振器产生具有谐振频率的第一参考信号，并且共模控制器维持参考谐振器的共模电压电平基本恒定。 还可以包括幅度控制器以维持第一参考信号的峰值幅度的幅度基本恒定。 还可以产生温度依赖的控制电压并用于维持谐振频率基本上恒定或在校准或选定频率的预定变化范围内。

公开(公告)号：US20150263671A1

公开(公告)日：2015-09-17

申请号：US14204542

申请日：2014-03-11

申请人： QUALCOMM Incorporated

发明人： Thinh Cat NGUYEN ,  Jeongsik YANG ,  Roger Thomas BROCKENBROUGH ,  Ara BICAKCI ,  Anup SAVLA ,  Shen WANG

IPC分类号： H03B5/12 ,  H04B1/40

CPC分类号： H03B5/1212 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1237 ,  H03B5/1262 ,  H03B5/1278 ,  H03B5/1287 ,  H03B2200/0038 ,  H03B2200/0082 ,  H03B2200/009 ,  H04B1/40

摘要： Certain aspects of the present disclosure generally relate to voltage-controlled oscillators (VCOs) using a lowered or an adjustable negative transconductance (−gm) compared to conventional VCOs. This −gm degeneration technique suppresses the noise injected into an inductor-capacitor (LC) tank of the VCO, thereby providing lower signal-to-noise ratio (SNR) for a given VCO voltage swing, lower power consumption, and decreased phase noise. One example VCO generally includes a resonant tank circuit, an active negative transconductance circuit connected with the resonant tank circuit, and a bias current circuit for sourcing or sinking a bias current through the resonant tank circuit and the active negative transconductance circuit to generate an oscillating signal. The active negative transconductance circuit includes cross-coupled transistors and an impedance connected between the cross-coupled transistors and a reference voltage.

摘要翻译： 本公开的某些方面通常涉及使用与常规VCO相比降低或可调负负跨导（-gm）的压控振荡器（VCO）。 该-gm退化技术抑制注入到VCO的电感 - 电容（LC）槽中的噪声，从而为给定的VCO电压摆幅提供较低的信噪比（SNR），降低功耗，降低相位噪声。 一个示例VCO通常包括谐振回路电路，与谐振回路连接的有源负跨导电路以及用于通过谐振回路和有源负跨导电路来产生或吸收偏置电流的偏置电流电路，以产生振荡信号 。 有源负跨导电路包括交叉耦合晶体管和连接在交叉耦合晶体管与参考电压之间的阻抗。

公开(公告)号：US20150180414A1

公开(公告)日：2015-06-25

申请号：US14504875

申请日：2014-10-02

申请人： Samsung Electronics Co., Ltd.

发明人： Sang-Hun LEE ,  Jong-Shin SHIN

IPC分类号： H03B7/06 ,  H03L7/099 ,  H03L7/089

CPC分类号： H03B7/06 ,  H03B5/1215 ,  H03B5/1225 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1278 ,  H03B5/1287 ,  H03J1/005 ,  H03J2200/10 ,  H03L7/089 ,  H03L7/099

摘要： A voltage controlled oscillator (VCO) includes an oscillation frequency signal generation circuit and a transconductance control circuit. The oscillation frequency signal generation circuit has a first transconductance and generates a first oscillation frequency signal and a second oscillation frequency signal based on a voltage control signal and a power supply voltage. The first and second oscillation frequency signals are a pair of differential signals. The oscillation frequency signal generation circuit is configured to output the first oscillation frequency signal from a first output node. The oscillation frequency signal generation circuit is configured to output the second oscillation frequency signal from a second output node. The transconductance control circuit is connected to the first and second output nodes and has a second transconductance. The transconductance control circuit is configured to adjust the second transconductance based on a digital control signal.

摘要翻译： 压控振荡器（VCO）包括振荡频率信号发生电路和跨导控制电路。 振荡频率信号发生电路具有第一跨导，并且基于电压控制信号和电源电压产生第一振荡频率信号和第二振荡频率信号。 第一和第二振荡频率信号是一对差分信号。 振荡频率信号发生电路被配置为从第一输出节点输出第一振荡频率信号。 振荡频率信号发生电路被配置为从第二输出节点输出第二振荡频率信号。 跨导控制电路连接到第一和第二输出节点并且具有第二跨导。 跨导控制电路被配置为基于数字控制信号调整第二跨导。

公开(公告)号：US07084713B2

公开(公告)日：2006-08-01

申请号：US11043385

申请日：2005-01-25

申请人： Vincenzo F. Peluso

发明人： Vincenzo F. Peluso

IPC分类号： H03B1/00 ,  H03B5/00 ,  H03B5/12

CPC分类号： H03B5/1228 ,  H03B5/1215 ,  H03B5/1231 ,  H03B5/1243 ,  H03B5/1265 ,  H03B5/1287 ,  H03B5/1293 ,  H03B2201/0266 ,  H03B2201/0283 ,  H03J1/005 ,  H03J2200/10

摘要： A programmable capacitor bank includes multiple tuning elements. Each tuning element includes two tuning capacitors and a pass transistor that electrically connects or disconnects the capacitors to/from common nodes. For a thermometer decoded capacitor bank, the tuning capacitors for all tuning elements have equal capacitance. Each tuning element further includes at least one pull-up transistor that provides high bias voltage for the pass transistor and at least one pull-down transistor that provides low bias voltage for the pass transistor. The multiple tuning elements may be arranged in a ladder topology such that (1) the tuning elements are turned on in sequential order starting from one end of the ladder and going toward the other end of the ladder and (2) each tuning element receives biasing from a preceding tuning element and provides biasing to a succeeding tuning element. The capacitor bank may be used for VCOs and other circuits.

摘要翻译： 可编程电容器组包括多个调谐元件。 每个调谐元件包括两个调谐电容器和将电容器与公共节点电连接或断开的通过晶体管。 对于温度计解码电容器组，用于所有调谐元件的调谐电容器具有相等的电容。 每个调谐元件还包括提供用于传输晶体管的高偏置电压的至少一个上拉晶体管和为传输晶体管提供低偏置电压的至少一个下拉晶体管。 多个调谐元件可以被布置成梯形拓扑结构，使得（1）调谐元件从梯子的一端开始并且朝着梯子的另一端顺序地接通，并且（2）每个调谐元件接收偏置 并且向后续的调谐元件提供偏置。 电容器组可用于VCO和其他电路。