公开(公告)号：US08165550B2

公开(公告)日：2012-04-24

申请号：US12282080

申请日：2008-03-07

Applicant: Takeshi Fujii ,  Yasuo Ooba ,  Mineyuki Iwaida ,  Hiroaki Ozeki

Inventor： Takeshi Fujii ,  Yasuo Ooba ,  Mineyuki Iwaida ,  Hiroaki Ozeki

IPC: H04B1/06 ,  H04B7/00

CPC classification number: H03L7/10 ,  H03B5/1215 ,  H03B5/1231 ,  H03B5/1265 ,  H03B2201/0208 ,  H03B2201/025 ,  H03J2200/10 ,  H03L7/087 ,  H03L7/099 ,  H03L7/18 ,  H03L2207/06

Abstract: A broad oscillation frequency range and good phase noise characteristic are achievable simultaneously by an oscillation circuit and a resonance circuit connected to the oscillation circuit. The resonance circuit includes an inductor element connected to the oscillation circuit, a first variable capacitance section connected to the inductor element, and a second variable capacitance section connected in parallel to the first variable capacitance section. The first variable capacitance section includes a first variable capacitive element connected to the inductor element, and a second variable capacitive element connected in parallel to the first variable capacitive element. The first variable capacitive element changes its capacity value based on a control voltage and a first reference voltage. The second variable capacitive element changes its capacity value based on the control voltage and a second reference voltage. The first reference voltage and the second reference voltage are controlled based on the capacity value of the second variable capacitance section.

Abstract translation: 通过振荡电路和连接到振荡电路的谐振电路同时实现宽振荡频率范围和良好的相位噪声特性。 谐振电路包括连接到振荡电路的电感器元件，连接到电感器元件的第一可变电容部分和与第一可变电容部分并联连接的第二可变电容部分。 第一可变电容部分包括连接到电感器元件的第一可变电容元件和与第一可变电容元件并联连接的第二可变电容元件。 第一可变电容元件基于控制电压和第一参考电压改变其容量值。 第二可变电容元件根据控制电压和第二参考电压改变其容量值。 基于第二可变电容部的容量值来控制第一基准电压和第二基准电压。

公开(公告)号：US20110028111A1

公开(公告)日：2011-02-03

申请号：US12862476

申请日：2010-08-24

Applicant: Ahmadreza Rofougaran

Inventor： Ahmadreza Rofougaran

IPC: H04B1/18

CPC classification number: H03L7/08 ,  H03B2201/025 ,  H03J2200/10 ,  H03L7/085 ,  H03L7/099 ,  H03L7/1806 ,  H03L2207/06

Abstract: Aspects of a method and system for frequency tuning based on characterization of an oscillator are provided. In this regard, a frequency of an oscillator in an integrated circuit may be controlled based on a first digital control word, a frequency of a tuned circuit may be controlled based on a second digital control word, and the second control word may be determined utilizing a mapping between the first control word and the second control word. The frequency of the oscillator and the tuned circuit may be controlled by adjusting a capacitance of the oscillator and tuned circuit, respectively. The mapping may be based on a relationship between the oscillator and the tuned circuit, such as logical and/or mathematical relationship between the capacitance of the oscillator and the capacitance of the tuned circuit and/or the relationship between the frequency of the oscillator and the frequency of the tuned circuit.

Abstract translation: 提供了基于振荡器特征的用于频率调谐的方法和系统的方面。 在这方面，可以基于第一数字控制字来控制集成电路中的振荡器的频率，可以基于第二数字控制字来控制调谐电路的频率，并且可以利用第二数字控制字来确​​定第二控制字 第一控制字和第二控制字之间的映射。 可以通过分别调整振荡器和调谐电路的电容来控制振荡器和调谐电路的频率。 该映射可以基于振荡器和调谐电路之间的关系，例如振荡器的电容和调谐电路的电容之间的逻辑和/或数学关系和/或振荡器的频率与 调谐电路的频率。

公开(公告)号：US20100267352A1

公开(公告)日：2010-10-21

申请号：US12282080

申请日：2008-03-07

Applicant: Takeshi Fujii ,  Yasuo Ooba ,  Mineyuki Iwaida ,  Hiroaki Ozeki

Inventor： Takeshi Fujii ,  Yasuo Ooba ,  Mineyuki Iwaida ,  Hiroaki Ozeki

IPC: H03B5/12 ,  H04B1/06

CPC classification number: H03L7/10 ,  H03B5/1215 ,  H03B5/1231 ,  H03B5/1265 ,  H03B2201/0208 ,  H03B2201/025 ,  H03J2200/10 ,  H03L7/087 ,  H03L7/099 ,  H03L7/18 ,  H03L2207/06

Abstract: A broad oscillation frequency range and good phase noise characteristic are achievable simultaneously by an oscillation circuit and a resonance circuit connected to the oscillation circuit. The resonance circuit includes an inductor element connected to the oscillation circuit, a first variable capacitance section connected to the inductor element, and a second variable capacitance section connected in parallel to the first variable capacitance section. The first variable capacitance section includes a first variable capacitive element connected to the inductor element, and a second variable capacitive element connected in parallel to the first variable capacitive element. The first variable capacitive element changes its capacity value based on a control voltage and a first reference voltage. The second variable capacitive element changes its capacity value based on the control voltage and a second reference voltage. The first reference voltage and the second reference voltage are controlled based on the capacity value of the second variable capacitance section.

Abstract translation: 通过振荡电路和连接到振荡电路的谐振电路同时实现宽振荡频率范围和良好的相位噪声特性。 谐振电路包括连接到振荡电路的电感器元件，连接到电感器元件的第一可变电容部分和与第一可变电容部分并联连接的第二可变电容部分。 第一可变电容部分包括连接到电感器元件的第一可变电容元件和与第一可变电容元件并联连接的第二可变电容元件。 第一可变电容元件基于控制电压和第一参考电压改变其容量值。 第二可变电容元件根据控制电压和第二参考电压改变其容量值。 基于第二可变电容部的容量值来控制第一基准电压和第二基准电压。

公开(公告)号：US07689190B2

公开(公告)日：2010-03-30

申请号：US11112616

申请日：2005-04-22

Applicant: Donald A. Kerth ,  James P. Maligeorgos ,  Dylan A. Hester ,  Lysander Lim ,  Augusto M. Marques ,  G. Tyson Tuttle

Inventor： Donald A. Kerth ,  James P. Maligeorgos ,  Dylan A. Hester ,  Lysander Lim ,  Augusto M. Marques ,  G. Tyson Tuttle

IPC: H04B7/00

CPC classification number: H03J7/04 ,  H03B5/36 ,  H03B2201/025 ,  H03J2200/10

Abstract: A technique includes generating an analog voltage to control a frequency for an oscillator. The analog signal is converted into a digital signal, and the frequency is controlled in response to the digital signal.

Abstract translation: 一种技术包括产生模拟电压以控制振荡器的频率。 模拟信号被转换成数字信号，并且响应于数字信号来控制频率。

公开(公告)号：US07675373B2

公开(公告)日：2010-03-09

申请号：US11807484

申请日：2007-05-29

Applicant: Edwin Thaller

Inventor： Edwin Thaller

IPC: H03B27/00

CPC classification number: H03B5/1228 ,  H03B5/1212 ,  H03B5/1253 ,  H03B5/1265 ,  H03B5/1293 ,  H03B2201/025 ,  H03J2200/10

Abstract: The voltage controlled oscillator (VCO) circuit comprises a tank circuit, a first tuning section comprising first capacitor elements wherein each one of the first capacitor elements is individually utilizable for the tank circuit, and a second tuning section comprising second capacitor elements wherein each one of the second capacitor elements is individually utilizable for the tank circuit and the capacitance of each one of the second capacitor elements is continuously adjustable in a predetermined capacitance range in dependence on a tuning voltage.

Abstract translation: 压控振荡器（VCO）电路包括振荡电路，第一调谐部分包括第一电容器元件，其中第一电容器元件中的每一个可独立地用于储能电路，第二调谐部分包括第二电容器元件，其中每个 第二电容器元件可独立地用于储罐电路，并且每个第二电容器元件的电容根据调谐电压在预定电容范围内连续可调。

公开(公告)号：US07587184B2

公开(公告)日：2009-09-08

申请号：US11259910

申请日：2005-10-27

Applicant: Lawrence Der ,  Dana Taipale ,  Scott Willingham

Inventor： Lawrence Der ,  Dana Taipale ,  Scott Willingham

IPC: H04B1/18

CPC classification number: H03B5/32 ,  H03B2201/025 ,  H03D7/165 ,  H03J1/0008 ,  H03J2200/10

Abstract: In one embodiment, the present invention includes a method for determining if a frequency control instruction would cause a first capacitor bank to reach a limit and adjusting the first capacitor bank in a first direction using a calibration value and adjusting a second capacitor bank in a second direction if the first capacitor bank would reach the limit. Furthermore, the calibration value may be calculated and stored in accordance with other embodiments. In such manner, small changes in capacitance and correspondingly small changes in frequency may be effected.

Abstract translation: 在一个实施例中，本发明包括一种用于确定频率控制指令是否会使第一电容器组达到限制并且使用校准值在第一方向上调整第一电容器组并在第二电容器组中调整第二电容器组的方法 方向如果第一个电容器组达到极限。 此外，可以根据其他实施例来计算和存储校准值。 以这种方式，可以实现电容的小的变化和相应的小的频率变化。

公开(公告)号：US20090206939A1

公开(公告)日：2009-08-20

申请号：US12432777

申请日：2009-04-30

Applicant: Christian Grewing ,  Stefan Heinrich van Waasen ,  Emericks Anders

Inventor： Christian Grewing ,  Stefan Heinrich van Waasen ,  Emericks Anders

IPC: H03B1/00

CPC classification number: H03L7/0995 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1265 ,  H03B2201/0208 ,  H03B2201/025 ,  H03J2200/10

Abstract: A VCO device is described that has pre-compensation. Digitally switchable compensation capacitors are selectively activated to adjust operation of the VCO to mitigate undesirable operational effects. In some example embodiments, the digitally switchable compensation capacitors of the VCO are adjusted to compensate for the effects of activating (from a quiescent state) an output buffer driven by the VCO.

公开(公告)号：US20090072910A1

公开(公告)日：2009-03-19

申请号：US12112914

申请日：2008-04-30

Applicant: Lalitkumar Nathawad ,  Justin Hwang

Inventor： Lalitkumar Nathawad ,  Justin Hwang

IPC: H03B5/18 ,  H03L7/06

CPC classification number: H03L7/099 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/1253 ,  H03B5/1265 ,  H03B2201/025 ,  H03J2200/10

Abstract: A voltage-controlled oscillator (VCO) comprising a first circuit, a second circuit, a comparator circuit, and a control unit. The first circuit can determine an output common mode voltage associated with an output of the VCO. The second circuit can generate an upper control voltage limit and a lower control voltage limit associated with a control voltage received by the VCO based, at least in part, on the output common mode voltage. The comparator circuit can compare the control voltage to the upper and lower control voltage limits. The control unit can determine whether to change a switched capacitance associated with the VCO based, at least in part, on whether the control voltage is outside the upper and lower control voltage limits, thereby maintaining an optimal region of operation for the control voltage.

Abstract translation: 一种包括第一电路，第二电路，比较器电路和控制单元的压控振荡器（VCO）。 第一电路可以确定与VCO的输出相关联的输出共模电压。 第二电路可以至少部分地基于输出共模电压产生与VCO接收的控制电压相关联的较高控制电压限制和较低控制电压限制。 比较器电路可以将控制电压与上下限电压限制进行比较。 至少部分地基于控制电压是否超出上限和下限控制电压限制，控制单元可以确定是否改变与VCO相关联的开关电容，从而保持控制电压的最佳操作区域。

公开(公告)号：US20080174361A1

公开(公告)日：2008-07-24

申请号：US12054755

申请日：2008-03-25

Applicant: Ramon A. Gomez

Inventor： Ramon A. Gomez

IPC: G05F1/10

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：US07330079B2

公开(公告)日：2008-02-12

申请号：US11263304

申请日：2005-10-31

Applicant: Louis Albert Williams, III ,  Francesco Cavaliere

Inventor： Louis Albert Williams, III ,  Francesco Cavaliere

IPC: H03L7/08

CPC classification number: H03L7/085 ,  H03B2201/025 ,  H03J2200/10 ,  H03L7/099 ,  H03L7/1976

Abstract: A controller for an adjustable-frequency oscillator includes a first counter supplied with a stop-count value to count adjustable-frequency oscillator cycles divided by the ratio of desired frequency to reference oscillator frequency, to produce a stop signal when the first counter reaches the stop-count value. A second counter counts cycles of a reference oscillator starting from an initial number related to the stop-count value. The second counter stops counting and produces an end-count when the second counter receives the stop signal from the first counter. A resonant tank circuit includes a bank of capacitors with switches to select resonant tank circuit capacitors. The switches are selectively controlled using the end-count in the second counter. The stop-count value is set for the first counter so that the end count number in the second counter using a ones-complement binary format can be used to iteratively set the switches with minimal digital computation.

Abstract translation: 用于可调频率振荡器的控制器包括：第一计数器，其提供停止计数值，以将可调频率振荡器周期除以所需频率与参考振荡器频率的比率，以在第一计数器到达停止时产生停止信号 - 数值。 第二个计数器从与停止计数值相关的初始数字开始计数参考振荡器的周期。 当第二计数器从第一计数器接收到停止信号时，第二计数器停止计数并产生结束计数。 谐振回路包括一组电容器，开关用于选择谐振回路电容器。 使用第二计数器中的结束计数来选择性地控制开关。 为第一计数器设置停止计数值，使得使用单补码二进制格式的第二计数器中的结束计数值可以用于以最小的数字计算来迭代地设置开关。