公开(公告)号：US20090058536A1

公开(公告)日：2009-03-05

申请号：US12259770

申请日：2008-10-28

Applicant: Ramon A. Gomez

Inventor： Ramon A. Gomez

IPC: H03L7/00

CPC classification number: H03L7/00 ,  H03B5/1212 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1253 ,  H03B5/1265 ,  H03B5/1278 ,  H03B2200/0046 ,  H03B2200/0048 ,  H03B2200/005 ,  H03B2201/02 ,  H03B2201/0208 ,  H03B2201/025 ,  H03D7/165 ,  H03D7/18 ,  H03J5/244 ,  H03J2200/10 ,  H03L7/0898 ,  H03L7/093 ,  H03L7/099 ,  H03L7/10 ,  H03L7/107 ,  H03L7/1072 ,  H03L7/18

Abstract: A gain compensator compensates for the gain variation of a varactor-tuned voltage tuned oscillator (VCO) in a phase lock loop (PLL). The VCO includes a parallel LC circuit having multiple fixed capacitors that can be switched-in or switched-out of the LC circuit according to a capacitor control signal to perform band-select tuning of the VCO. The gain compensator compensates for the variable VCO gain by generating a charge pump reference current that is based on the same capacitor control signal that controls the fixed capacitors in the LC circuit. The gain compensator generates the charge pump reference current by replicating a reference scale current using unit current sources. The number of times the reference scale current is replicated is based on the fixed capacitance that is switched-in to the LC circuit and therefore the frequency band of the PLL. The reference scale current is generated based on a PLL control that specifics certain PLL characteristics such as reference frequency, loop bandwidth, and loop damping. Therefore, the reference pump current can be efficiently optimized for-changing PLL operating conditions, in addition to compensating for variable VCO gain.

Abstract translation: 增益补偿器补偿锁相环（PLL）中变容二极管调谐电压调谐振荡器（VCO）的增益变化。 VCO包括具有多个固定电容器的并联LC电路，其可以根据电容器控制信号切换或切换出LC电路，以执行VCO的频带选择调谐。 增益补偿器通过产生基于控制LC电路中的固定电容器的相同电容器控制信号的电荷泵参考电流来补偿可变VCO增益。 增益补偿器通过使用单位电流源复制参考刻度电流来产生电荷泵参考电流。 参考比例电流复制的次数是基于切换到LC电路的固定电容，因此是PLL的频带。 参考比例电流是基于特定于参考频率，环路带宽和环路阻尼等特定PLL特性的PLL控制产生的。 因此，除了补偿可变VCO增益之外，参考泵电流可以有效地优化用于改变PLL工作条件。

公开(公告)号：US20090039970A1

公开(公告)日：2009-02-12

申请号：US11837042

申请日：2007-08-10

Applicant: David H. Shen ,  Ann P. Shen

Inventor： David H. Shen ,  Ann P. Shen

IPC: H03B5/32

CPC classification number: H03B5/36 ,  H03B2201/025 ,  H03J2200/10

Abstract: Embodiments feature techniques and systems for analog and digital tuning of crystal oscillators. In one aspect, some implementations feature a method for tuning a frequency of a crystal oscillator that can include adjusting the tuning frequency of the crystal oscillator from a nominal frequency via a switched-capacitor frequency tuning circuit, the switched-capacitor frequency tuning circuit can have switchable sections to adjust the tuning of the crystal oscillator. The method can include controlling an analog control input that is coupled to a varactor within each of the switchable sections, where each of the switchable sections can include a fixed capacitor in series with the varactor and a switch. The method can involve controlling a digital control input, where the digital control input can electrically connect or disconnect one or more of the switchable sections from the crystal. There can be independent control between the digital and analog tuning mechanisms.

Abstract translation: 实施例用于晶体振荡器的模拟和数字调谐的技术和系统。 在一个方面，一些实施方式的特征在于一种用于调谐晶体振荡器的频率的方法，该方法可以包括通过开关电容器频率调谐电路从标称频率调整晶体振荡器的调谐频率，开关电容器频率调谐电路可以具有 可切换部分来调节晶体振荡器的调谐。 该方法可以包括控制耦合到每个可切换部分内的变容二极管的模拟控制输入，其中每个可切换部分可以包括与变容二极管串联的固定电容器和开关。 该方法可以涉及控制数字控制输入，其中数字控制输入可以将一个或多个可切换部分与晶体电连接或断开。 数字和模拟调谐机制之间可以独立控制。

公开(公告)号：US07477113B1

公开(公告)日：2009-01-13

申请号：US11017416

申请日：2004-12-20

Applicant: Rodney A. Hughes

Inventor： Rodney A. Hughes

IPC: H03B5/12

CPC classification number: H01P1/15 ,  H03B2201/025 ,  H03J3/185 ,  H03J3/20 ,  H03J2200/10 ,  H03J2200/38

Abstract: A linear voltage-controlled capacitance circuit is provided that includes a plurality of differentially coupled metal-oxide-semiconductor (MOS) varactor pairs. Each MOS varactor pair is operable to receive a same tuning voltage and to receive a bias voltage unique to the MOS varactor pair. The capacitance circuit is operable to generate a positive tank node signal and a negative tank node signal based on the tuning voltage and the bias voltages.

Abstract translation: 提供一种线性压控电容电路，其包括多个差分耦合金属氧化物半导体（MOS）变容二极管对。 每个MOS变容二极管对可操作以接收相同的调谐电压并接收MOS变容二极管对独有的偏置电压。 电容电路可操作以基于调谐电压和偏置电压产生正的储罐结点信号和负罐结点信号。

公开(公告)号：US20080278249A1

公开(公告)日：2008-11-13

申请号：US11746403

申请日：2007-05-09

Applicant: Sami Hyvonen

Inventor： Sami Hyvonen

IPC: H03B7/06 ,  H03J3/20

CPC classification number: H03B5/1228 ,  H03B5/1215 ,  H03B5/1253 ,  H03B5/1265 ,  H03B5/1293 ,  H03B2200/0048 ,  H03B2200/005 ,  H03B2201/0208 ,  H03B2201/025 ,  H03J2200/10

Abstract: Disclosed herein are embodiments of an LC-type VCO with multiple operational frequency bands having reasonably similar frequency vs. control signal slopes.

Abstract translation: 这里公开了具有多个工作频带的具有合理相似的频率对控制信号斜率的LC型VCO的实施例。

公开(公告)号：US07443248B2

公开(公告)日：2008-10-28

申请号：US11313372

申请日：2005-12-21

Applicant: Ramon A. Gomez

Inventor： Ramon A. Gomez

IPC: H03L7/00

CPC classification number: H03L7/00 ,  H03B5/1212 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1253 ,  H03B5/1265 ,  H03B5/1278 ,  H03B2200/0046 ,  H03B2200/0048 ,  H03B2200/005 ,  H03B2201/02 ,  H03B2201/0208 ,  H03B2201/025 ,  H03D7/165 ,  H03D7/18 ,  H03J5/244 ,  H03J2200/10 ,  H03L7/0898 ,  H03L7/093 ,  H03L7/099 ,  H03L7/10 ,  H03L7/107 ,  H03L7/1072 ,  H03L7/18

Abstract: A gain compensator compensates for the gain variation of a varactor-tuned voltage tuned oscillator (VCO) in a phase lock loop (PLL). The VCO includes a parallel LC circuit having multiple fixed capacitors that can be switched-in or switched-out of the LC circuit according to a capacitor control signal to perform band-select tuning of the VCO. The gain compensator compensates for the variable VCO gain by generating a charge pump reference current that is based on the same capacitor control signal that controls the fixed capacitors in the LC circuit. The gain compensator generates the charge pump reference current by replicating a reference scale current using unit current sources. The number of times the reference scale current is replicated is based on the fixed capacitance that is switched-in to the LC circuit and therefore the frequency band of the PLL. The reference scale current is generated based on a PLL control that specifics certain PLL characteristics such as reference frequency, loop bandwidth, and loop damping. Therefore, the reference pump current can be efficiently optimized for changing PLL operating conditions, in addition to compensating for variable VCO gain.

Abstract translation: 增益补偿器补偿锁相环（PLL）中变容二极管调谐电压调谐振荡器（VCO）的增益变化。 VCO包括具有多个固定电容器的并联LC电路，其可以根据电容器控制信号切换或切换出LC电路，以执行VCO的频带选择调谐。 增益补偿器通过产生基于控制LC电路中的固定电容器的相同电容器控制信号的电荷泵参考电流来补偿可变VCO增益。 增益补偿器通过使用单位电流源复制参考刻度电流来产生电荷泵参考电流。 参考比例电流复制的次数是基于切换到LC电路的固定电容，因此是PLL的频带。 参考比例电流是基于特定于参考频率，环路带宽和环路阻尼等特定PLL特性的PLL控制产生的。 因此，除了补偿可变VCO增益之外，参考泵电流可以有效地优化用于改变PLL工作条件。

公开(公告)号：US20080204157A1

公开(公告)日：2008-08-28

申请号：US12035250

申请日：2008-02-21

Applicant: Takayuki TSUKIZAWA ,  Koji TAKINAMI

Inventor： Takayuki TSUKIZAWA ,  Koji TAKINAMI

IPC: H03B7/06

CPC classification number: H03B5/1228 ,  H03B5/1215 ,  H03B5/1243 ,  H03B5/1265 ,  H03B5/1293 ,  H03B2201/025 ,  H03J2200/10

Abstract: A voltage controlled oscillator of the present invention comprises a reference voltage generation section 114 for generating a plurality of reference voltage based on a power supply voltage. A first to a third reference voltages Vref1, Vref2, and Vref3 are inputted to a first to a third variable capacitance circuits A, B, and C, respectively, at each one of terminals of each of the first to the third variable capacitance circuits A, B, and C. The first to the third reference voltages Vref1, Vref2, and Vref3 each has a fixed value, and a difference between the first reference voltage Vref1 and the second reference voltage Vref2 and a difference between the second reference voltage Vref2 and the third reference voltage Vref3 represent values different from each other. A control voltage Vt for feedback-controlling an oscillation frequency is inputted to each of the other of the terminals of the variable capacitance element of each of the n variable capacitance circuits such that the control voltage Vt having the same value is inputted to said each of the other of the terminals.

Abstract translation: 本发明的压控振荡器包括：基准电压产生部分114，用于基于电源电压产生多个参考电压。 第一至第三参考电压Vref 1，Vref 2和Vref 3分别在第一至第三变量中的每个端子的每个端子处输入到第一至第三可变电容电路A，B和C 电容电路A，B和C.第一至第三参考电压Vref 1，Vref 2和Vref 3各自具有固定值，第一参考电压Vref 1和第二参考电压Vref 2之间的差和a 第二参考电压Vref 2和第三参考电压Vref 3之间的差表示彼此不同的值。 将用于反馈控制振荡频率的控制电压Vt输入到n个可变电容电路中的每一个的可变电容元件的另一个端子中，使得具有相同值的控制电压Vt被输入到 另一个终端。

公开(公告)号：US20080157886A1

公开(公告)日：2008-07-03

申请号：US11645786

申请日：2006-12-27

Applicant: Toshimasa Numata ,  Alejandro Puel

Inventor： Toshimasa Numata ,  Alejandro Puel

IPC: H03B25/00

CPC classification number: H03B25/00 ,  H03B28/00 ,  H03B2201/0208 ,  H03B2201/025

Abstract: An oscillator includes: oscillation units (11 through 1n) outputting oscillation signals of different frequencies; a transmission line (15) to which outputs of the oscillation units (11, 12) are connected, the transmission line having a characteristic impedance corresponding to an output impedance of an output terminal (Tout); and a low-pass filter 818) connected between the transmission line (15) and the output terminal.

Abstract translation: 振荡器包括：振荡单元（11至1 n），输出不同频率的振荡信号; 传输线（15），所述振荡单元（11,12）的输出端连接到所述传输线路上，所述传输线路具有与输出端子（Tout）的输出阻抗相对应的特性阻抗; 和低通滤波器818），连接在传输线（15）和输出端之间。

公开(公告)号：US20080150645A1

公开(公告)日：2008-06-26

申请号：US12036165

申请日：2008-02-22

Applicant: Michael Shannon McCorquodale ,  Scott Michael Pernia ,  Sundus Kubba ,  Justin O'Day ,  Gordon Carichner

Inventor： Michael Shannon McCorquodale ,  Scott Michael Pernia ,  Sundus Kubba ,  Justin O'Day ,  Gordon Carichner

IPC: H03B5/12 ,  H03L1/02

CPC classification number: G06F1/04 ,  G06F1/08 ,  H03B5/06 ,  H03B5/1212 ,  H03B5/1215 ,  H03B5/1221 ,  H03B5/124 ,  H03B2201/025 ,  H03J1/0008 ,  H03J2200/10 ,  H03L1/00 ,  H03L1/02 ,  H03L1/022 ,  H03L1/025 ,  H03L3/00 ,  H03L7/08 ,  H03L7/0812 ,  H03L7/099 ,  H03L7/183 ,  H03L2207/50

Abstract: In various embodiments, the invention provides a discrete clock generator and/or a timing and frequency reference using an LC-oscillator topology, having a frequency controller to control and provide a stable resonant frequency, which may then be provided to other, second circuitry such as a processor or controller. Frequency stability is provided over variations in a selected parameter such as temperature and fabrication process variations. The various apparatus embodiments include a sensor adapted to provide a signal in response to at least one parameter of a plurality of parameters; and a frequency controller adapted to modify the resonant frequency in response to the second signal. In exemplary embodiments, the sensor is implemented as a current source responsive to temperature fluctuations, and the frequency controller is implemented as a plurality of controlled reactance modules which are selectively couplable to the resonator or to one or more control voltages. The controlled reactance modules may include fixed or variable capacitances or inductances, and may be binary weighted. Arrays of resistive modules are also provided, to generate one or more control voltages.

Abstract translation: 在各种实施例中，本发明提供使用LC振荡器拓扑的离散时钟发生器和/或定时和频率参考，其具有频率控制器来控制和提供稳定的谐振频率，然后可以将其提供给其它第二电路，例如 作为处理器或控制器。 提供了频率稳定性，如选择的参数（如温度和制造工艺变化）的变化。 各种装置实施例包括适于响应于多个参数的至少一个参数提供信号的传感器; 以及频率控制器，其适于响应于所述第二信号来修改所述谐振频率。 在示例性实施例中，响应于温度波动将传感器实现为电流源，并且频率控制器被实现为可选择地耦合到谐振器或一个或多个控制电压的多个受控电抗模块。 受控电抗模块可以包括固定或可变电容或电感，并且可以是二进制加权的。 还提供了电阻模块的阵列，以产生一个或多个控制电压。

公开(公告)号：US07321271B2

公开(公告)日：2008-01-22

申请号：US10676654

申请日：2003-10-01

Applicant: Koji Takinami ,  Hisashi Adachi ,  Tokio Endoh

Inventor： Koji Takinami ,  Hisashi Adachi ,  Tokio Endoh

IPC: H03B5/18

CPC classification number: H03B5/1215 ,  H03B5/1228 ,  H03B5/1253 ,  H03B5/1265 ,  H03B5/1293 ,  H03B2201/025 ,  H03L7/099

Abstract: A voltage-controlled oscillator having an inductor circuit, n pieces (n is two or more) of variable capacitance circuit having variable capacitance elements, negative resistance circuits, and reference voltage generation means of generating a reference voltage from a power supply voltage, and wherein a predetermined reference voltage is inputted to some terminals of the variable capacitance elements of the n pieces of variable capacitance circuit, a control voltage is inputted to the other terminals thereof, and of the variable capacitance elements of the n pieces of variable capacitance circuits, the predetermined reference voltage inputted to some terminals of the variable capacitance elements of at least two pieces of the variable capacitance circuit is different.

Abstract translation: 一种具有电感电路的压控振荡器，具有可变电容元件的可变电容电路的n个（n为2个以上），负电阻电路和从电源电压生成基准电压的基准电压生成单元，其中， 将预定的参考电压输入到n个可变电容电路的可变电容元件的一些端子，将一个控制电压输入到其它端子，以及n个可变电容电路的可变电容元件， 输入至少两个可变电容电路的可变电容元件的一些端子的预定参考电压是不同的。

公开(公告)号：US20070247238A1

公开(公告)日：2007-10-25

申请号：US11767899

申请日：2007-06-25

Applicant: Ramon Gomez

Inventor： Ramon Gomez

IPC: H03L7/099

CPC classification number: H03L7/00 ,  H03B5/1212 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1253 ,  H03B5/1265 ,  H03B5/1278 ,  H03B2200/0046 ,  H03B2200/0048 ,  H03B2200/005 ,  H03B2201/02 ,  H03B2201/0208 ,  H03B2201/025 ,  H03D7/165 ,  H03D7/18 ,  H03J5/244 ,  H03J2200/10 ,  H03L7/0898 ,  H03L7/093 ,  H03L7/099 ,  H03L7/10 ,  H03L7/107 ,  H03L7/1072 ,  H03L7/18

Abstract: A gain compensator compensates for the gain variation of a varactor-tuned voltage tuned oscillator (VCO) in a phase lock loop (PLL). The VCO includes a parallel LC circuit having multiple fixed capacitors that can be switched-in or switched-out of the LC circuit according to a capacitor control signal to perform band-select tuning of the VCO. The gain compensator compensates for the variable VCO gain by generating a charge pump reference current that is based on the same capacitor control signal that controls the fixed capacitors in the LC circuit. The gain compensator generates the charge pump reference current by replicating a reference scale current using unit current sources. The number of times the reference scale current is replicated is based on the fixed capacitance that is switched-in to the LC circuit and therefore the frequency band of the PLL. The reference scale current is generated based on a PLL, control that specifics certain PLL characteristics such as reference frequency, loop bandwidth, and loop damping. Therefore, the reference pump current can be efficiently optimized for-changing PLL operating conditions, in addition to compensating for variable VCO gain.

Abstract translation: 增益补偿器补偿锁相环（PLL）中变容二极管调谐电压调谐振荡器（VCO）的增益变化。 VCO包括具有多个固定电容器的并联LC电路，其可以根据电容器控制信号切换或切换出LC电路，以执行VCO的频带选择调谐。 增益补偿器通过产生基于控制LC电路中的固定电容器的相同电容器控制信号的电荷泵参考电流来补偿可变VCO增益。 增益补偿器通过使用单位电流源复制参考刻度电流来产生电荷泵参考电流。 参考比例电流复制的次数是基于切换到LC电路的固定电容，因此是PLL的频带。 参考比例电流是基于一个PLL来控制的，该控制指定了某些PLL特性，例如参考频率，环路带宽和环路阻尼。 因此，除了补偿可变VCO增益之外，参考泵电流可以有效地优化用于改变PLL工作条件。