公开(公告)号：US09100026B2

公开(公告)日：2015-08-04

申请号：US13938727

申请日：2013-07-10

Applicant: QUALCOMM Incorporated

Inventor： Gary John Ballantyne ,  Bo Sun ,  Yi Tang ,  Zixiang Yang ,  Masoud Ensafdaran

IPC: H03L7/099 ,  H03B5/12 ,  H03J5/24

CPC classification number: H03L7/0991 ,  H03B5/1265 ,  H03B2200/0088 ,  H03B2201/025 ,  H03B2202/017 ,  H03J5/24 ,  H03J2200/10 ,  H03J2200/36 ,  H03L7/099 ,  H03L2207/50

Abstract: One feature pertains to a digitally controlled oscillator (DCO) that comprises a variable capacitor and noise reduction circuitry. The variable capacitor has a variable capacitance value that controls an output frequency of the DCO. The variable capacitance value is based on a first bank capacitance value provided by a first capacitor bank, a second bank capacitance value provided by a second capacitor bank, and an auxiliary bank capacitance value provided by an auxiliary capacitor bank. The noise reduction circuitry is adapted to adjust the variable capacitance value by adjusting the auxiliary bank capacitance value while maintaining at least one of the first bank capacitance value and/or the second bank capacitance value substantially unchanged. Prior to adjusting the variable capacitance value, the noise reduction circuitry may determine that a received input DCO control word transitions across a capacitor bank sensitive boundary.

Abstract translation: 一个特征涉及包含可变电容器和降噪电路的数字控制振荡器（DCO）。 可变电容器具有控制DCO的输出频率的可变电容值。 可变电容值基于由第一电容器组提供的第一组电容值，由第二电容器组提供的第二组电容值和由辅助电容器组提供的辅助组电容值。 噪声降低电路适于通过调整辅助电容电容值来调节可变电容值，同时保持第一组电容值和/或第二组电容值中的至少一个基本上不变。 在调整可变电容值之前，噪声降低电路可以确定接收的输入DCO控制字在电容器组敏感边界之间转变。

公开(公告)号：US20150207515A1

公开(公告)日：2015-07-23

申请号：US14676585

申请日：2015-04-01

Applicant: Ola Bruset ,  TOR OYVIND VEDAL

Inventor： Ola Bruset ,  TOR OYVIND VEDAL

IPC: H03L7/24 ,  H03B5/32

CPC classification number: H03L7/24 ,  G06F1/08 ,  H03B5/20 ,  H03B5/32 ,  H03B2201/025 ,  H03K5/135

Abstract: An integrated oscillator circuit comprises an oscillator configured to be switched between a first frequency and a second frequency. A switching circuit receives an input representing a target frequency and switches the oscillator between the first and second frequencies at intervals determined by the input, so as to cause the average output frequency of the oscillator to approximate the target frequency.

Abstract translation: 一种集成振荡器电路包括被配置为在第一频率和第二频率之间切换的振荡器。 切换电路接收表示目标频率的输入，并以由输入确定的间隔在第一和第二频率之间切换振荡器，以使振荡器的平均输出频率近似于目标频率。

公开(公告)号：US07598817B2

公开(公告)日：2009-10-06

申请号：US11645786

申请日：2006-12-27

Applicant: Toshimasa Numata ,  Alejandro Puel

Inventor： Toshimasa Numata ,  Alejandro Puel

IPC: H03B5/12 ,  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1n），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：US20090243742A1

公开(公告)日：2009-10-01

申请号：US12057743

申请日：2008-03-28

Applicant: Ahmadreza Rofougaran

Inventor： Ahmadreza Rofougaran

IPC: H03B5/12

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：US20090102572A1

公开(公告)日：2009-04-23

申请号：US12275608

申请日：2008-11-21

Applicant: Yun-seong EO ,  Hee-mun Bang ,  Kwang-du Lee ,  Heung-bae Lee

Inventor： Yun-seong EO ,  Hee-mun Bang ,  Kwang-du Lee ,  Heung-bae Lee

IPC: G01D5/20

CPC classification number: H01F21/12 ,  H03B5/1203 ,  H03B5/1218 ,  H03B5/1228 ,  H03B5/1268 ,  H03B2200/0048 ,  H03B2201/0216 ,  H03B2201/025 ,  H03J5/244 ,  H03J2200/15

Abstract: An inductor circuit includes a pair of inductors connected in parallel with each other and a switch for turning on and off electric power to one of the pair of inductors. The inductance of the inductor circuit can be varied and the quality factor Q can be improved. Further, RF circuits employing the inductor circuit can generate an intended operating frequency.

Abstract translation: 电感器电路包括彼此并联连接的一对电感器和用于将电力接通和断开到该对电感器之一的开关。 可以改变电感电路的电感，提高品质因数Q。 此外，采用电感电路的RF电路可以产生预期的工作频率。

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。