公开(公告)号：WO2002080351A1

公开(公告)日：2002-10-10

申请号：PCT/US2002/009243

申请日：2002-03-25

Applicant: CONEXANT SYSTEMS, INC.

Inventor： DAMGAARD, Morten ,  DOMINO, William, J. ,  MAGOON, Rahul ,  MOLNAR, Alyosha, C. ,  ZACHAN, Jeff

IPC: H03D3/24

CPC classification number: H03L7/099 ,  H03B2201/025 ,  H03B2201/0291 ,  H03J2200/10 ,  H03L5/00 ,  H03L7/087 ,  H03L7/113

Abstract: Systems for controlling the frequency of the output signal of a controllable oscillator (202) in a frequency synthesizer (200) are provided. One such system comprises a controllable oscillator (202) and a frequency control circuit (208). The controllable oscillator (202) is configured to generate an output signal that has a predefined frequency. The controllable oscillator (202) is also configured with a plurality of operational states that are controlled by the frequency control circuit. Each operational state of the controllable oscillator (202) defines a distinct frequency for the output signal of the controllable oscillator (202). The frequency control circuit receives the output signal of the controllable oscillator and determines the distinct frequency for the output signal that best approximates the predefined frequency. The frequency control circuit may also provide a control signal to the controllable oscillator that is configured to change the controllable oscillator to the operational state corresponding to the distinct frequency that best approximates the predefined frequency.

Abstract translation: 提供了用于控制频率合成器（200）中的可控振荡器（202）的输出信号的频率的系统。 一个这样的系统包括可控振荡器（202）和频率控制电路（208）。 可控振荡器（202）被配置为产生具有预定频率的输出信号。 可控振荡器（202）还配置有由频率控制电路控制的多个操作状态。 可控振荡器（202）的每个操作状态为可控振荡器（202）的输出信号定义不同的频率。 频率控制电路接收可控振荡器的输出信号，并确定最接近预定频率的输出信号的不同频率。 频率控制电路还可以向可控振荡器提供控制信号，该控制信号被配置为将可控振荡器改变到对应于最接近于预定频率的不同频率的操作状态。

公开(公告)号：WO01076069A1

公开(公告)日：2001-10-11

申请号：PCT/US2001/003867

申请日：2001-02-06

IPC: H03B1/00 ,  H03B5/02 ,  H03B5/08 ,  H03F3/191 ,  H03J1/00 ,  H03M1/80 ,  H03K3/26 ,  G06F7/64

CPC classification number: H03B5/08 ,  H03B5/02 ,  H03B2201/0208 ,  H03B2201/025 ,  H03B2201/0266 ,  H03F3/191 ,  H03J1/0008 ,  H03J2200/10 ,  H03M1/804

Abstract: A programming method (250) for digitally programming the adjustment of an electronic trim capacitor (212, 314, 414). In an initial step (252), programming is initiated by setting an enable terminal (224). In subsequent steps (254, 256) a pulse signal (226) then applied to a program terminal (222) and the number of pulses (228) provided to the programming terminal (222) while the enable terminal (224) is set determines the total number of capacitance increments for which the electronic trim capacitor (212, 314, 414) is programmed. The electronic trim capacitor (212, 314, 414) may be incorporated into an integrated circuit (12, 312) or a module (412) and the electronic trim capacitor (212, 314, 414) may be programmed and used "in situ" in a more general circuit (1) such as an oscillator (301) or an amplifier (401).

Abstract translation: 一种用于数字编程电子微调电容器（212,314,414）的调整的编程方法（250）。 在初始步骤（252）中，通过设置使能终端（224）来启动编程。 在随后的步骤（254,256）中，随后施加到程序终端（222）的脉冲信号（226）并且在使能终端（224）被置位时提供给编程终端（222）的脉冲数（228）决定了 电子微调电容器（212,314,414）被编程的电容增量的总数。 电子微调电容器（212,314,414）可以被并入到集成电路（12,312）或模块（412）中，并且电子微调电容器（212,314,414）可以被“编程和原位”使用， 在诸如振荡器（301）或放大器（401）的更通用的电路（1）中。

公开(公告)号：WO01076066A1

公开(公告)日：2001-10-11

申请号：PCT/US2001/011107

申请日：2001-04-04

IPC: H03B1/00 ,  H03B5/08 ,  H03F3/191 ,  H03J1/00 ,  H03J5/24 ,  H03M1/80 ,  H03J3/20

CPC classification number: H03F1/56 ,  H03B5/08 ,  H03B2201/0208 ,  H03B2201/025 ,  H03B2201/0266 ,  H03F3/191 ,  H03J1/0008 ,  H03J5/246 ,  H03J2200/10 ,  H03M1/804

Abstract: A structure (110, 150) for enhancing the quality factor (Q) of a capacitive circuit (112, 152). The capacitive circuit (112, 152) includes a first resistance (122, 164), a capacitance (124, 166), and a second resistance (126, 168). The capacitance (124, 166) represents the net capacitance of the capacitive circuit (112, 152), and the first resistance (122, 164) and second resistance (126, 168) represent elements of the intrinsic resistance of the capacitive circuit (112, 152). In one embodiment the structure (110) includes a first capacitor (128) which is connected in parallel with the capacitive circuit (112), and second capacitor (130) which is connected in series with the capacitive circuit (112). In a second embodiment the structure (150) includes a first inductor (164), connected in series between the capacitive circuit (152) and a node (162) where the first capacitor (174) and one end of the second capacitor (176) connect, and a second inductor (172) connected in series between the capacitive circuit (152) and the other end of the second capacitor (130).

Abstract translation: 一种用于增强电容电路（112,152）的品质因数（Q）的结构（110,150）。 电容电路（112,152）包括第一电阻（122,164），电容（124,166）和第二电阻（126,168）。 电容（124,166）表示电容电路（112,152）的净电容，第一电阻（122,164）和第二电阻（126,168）表示电容电路（112）的固有电阻的元件 ，152）。 在一个实施例中，结构（110）包括与电容电路（112）并联连接的第一电容器（128）和与电容电路（112）串联连接的第二电容器（130）。 在第二实施例中，结构（150）包括串联连接在电容电路（152）和节点（162）之间的第一电感器（164），其中第一电容器（174）和第二电容器（176）的一端 连接，并且串联连接在电容电路（152）和第二电容器（130）的另一端之间的第二电感器（172）。

公开(公告)号：WO9426041A3

公开(公告)日：1994-12-22

申请号：PCT/US9404304

申请日：1994-04-19

Applicant: RCA THOMSON LICENSING CORP ,  SAUER DONALD JON ,  RODDA WILLIAM ,  CAMPBELL EDWARD RICHARD III

Inventor： SAUER DONALD JON ,  RODDA WILLIAM ,  CAMPBELL EDWARD RICHARD III

IPC: H03L7/08 ,  H03B1/00 ,  H03B5/20 ,  H03B5/24 ,  H03K3/354 ,  H03L7/093 ,  H03L7/099 ,  H03L7/10 ,  H03L7/113 ,  H03L7/14 ,  H04N5/12 ,  H04N5/445 ,  H04N5/45 ,  H04N7/12 ,  H04C

CPC classification number: H03B5/24 ,  H03B5/20 ,  H03B2200/0038 ,  H03B2200/005 ,  H03B2200/0058 ,  H03B2201/02 ,  H03B2201/025 ,  H03B2201/0266 ,  H03J2200/10 ,  H03L7/099 ,  H03L7/0991 ,  H03L7/113 ,  H03L7/14 ,  H04N5/126 ,  H04N7/122

Abstract: A frequency detector of a phase-lock-loop circuit is used for measuring a frequency error between a frequency of an output signal of an oscillator and a frequency of a synchronizing signal. When the frequency error in each of 32 periods of the synchronizing signal exceeds a predetermined magnitude, the phase-lock-loop circuits begins operating in a coarse frequency correction mode. As long as the 32 periods have not lapsed, the phase-lock-loop circuit operates in an idle mode of operation and the oscillator is not corrected. As a result, during vertical retrace, when equalizing pulses occur, the phase-lock-loop circuit is not disturbed by a large frequency error.

公开(公告)号：WO1994026041A2

公开(公告)日：1994-11-10

申请号：PCT/US1994004304

申请日：1994-04-19

Applicant: RCA THOMSON LICENSING CORPORATION ,  SAUER, Donald, Jon ,  RODDA, William ,  CAMPBELL, Edward, Richard, III

Inventor： RCA THOMSON LICENSING CORPORATION

IPC: H04C07/113

CPC classification number: H03B5/24 ,  H03B5/20 ,  H03B2200/0038 ,  H03B2200/005 ,  H03B2200/0058 ,  H03B2201/02 ,  H03B2201/025 ,  H03B2201/0266 ,  H03J2200/10 ,  H03L7/099 ,  H03L7/0991 ,  H03L7/113 ,  H03L7/14 ,  H04N5/126 ,  H04N7/122

Abstract: A frequency detector of a phase-lock-loop circuit is used for measuring a frequency error between a frequency of an output signal of an oscillator and a frequency of a synchronizing signal. When the frequency error in each of 32 periods of the synchronizing signal exceeds a predetermined magnitude, the phase-lock-loop circuits begins operating in a coarse frequency correction mode. As long as the 32 periods have not lapsed, the phase-lock-loop circuit operates in an idle mode of operation and the oscillator is not corrected. As a result, during vertical retrace, when equalizing pulses occur, the phase-lock-loop circuit is not disturbed by a large frequency error.

Abstract translation: 锁相环电路的频率检测器用于测量振荡器的输出信号的频率和同步信号的频率之间的频率误差。 当同步信号的32个周期中的每个周期中的频率误差超过预定幅度时，锁相环电路以粗频率校正模式开始工作。 只要32个周期没有经过，锁相环电路就工作在空闲的工作模式，并且振荡器不被校正。 结果，在垂直回扫期间，当发生均衡脉冲时，锁相环电路不会受到大的频率误差的干扰。

公开(公告)号：US09503020B2

公开(公告)日：2016-11-22

申请号：US14858291

申请日：2015-09-18

Applicant: Seiko Epson Corporation

Inventor： Yoshiaki Matsumoto

IPC: H03B5/36

CPC classification number: H03B5/368 ,  H03B2200/0026 ,  H03B2201/025

Abstract: An oscillator includes a first VCXO and a second VCXO which are capable of changing an output frequency by application of a control voltage, and a control voltage terminal to which the control voltage is applied, the first VCXO includes a variable-capacitance diode (first variable-capacitance diode) and a resistor (first resistor), the second VCXO includes a variable-capacitance diode (second variable-capacitance diode) and a resistor (second resistor), the cutoff frequency of the first variable-capacitance diode, the second variable-capacitance diode, the first resistor, and the second resistor is equal to the cutoff frequency of the first variable-capacitance diode and the first resistor, and the cutoff frequency of the second variable-capacitance diode and the second resistor.

Abstract translation: 振荡器包括能够通过施加控制电压来改变输出频率的第一VCXO和第二VCXO以及施加控制电压的控制电压端子，第一VCXO包括可变电容二极管（第一变量 电容二极管）和电阻器（第一电阻器），第二VCXO包括可变电容二极管（第二可变电容二极管）和电阻器（第二电阻器），第一可变电容二极管的截止频率，第二变量 电容二极管，第一电阻器和第二电阻器等于第一可变电容二极管和第一电阻器的截止频率以及第二可变电容二极管和第二电阻器的截止频率。

公开(公告)号：US20150263702A1

公开(公告)日：2015-09-17

申请号：US14728689

申请日：2015-06-02

Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.

Inventor： Chewn-Pu Jou ,  Ying-Ta Lu ,  Hsien-Yuan Liao

IPC: H03J5/24 ,  H03L7/08 ,  H01G4/38

CPC classification number: H03J5/246 ,  H01G4/38 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1265 ,  H03B2201/025 ,  H03H5/12 ,  H03H7/00 ,  H03J2200/10 ,  H03L7/08

Abstract: An electronic device includes an inductive element, and variable capacitors. Each variable capacitor includes: first and third capacitors, both having a first terminal electrically connected to a first terminal of the inductive element; and second and fourth capacitors, both having a first terminal electrically connected to a second terminal of the inductive element. A first switch circuit electrically connects or isolates a second terminal of the first capacitor to/from a second terminal of the second capacitor. A second switch circuit electrically connects or isolates a second terminal of the third capacitor to/from a second terminal of the fourth capacitor. A third switch circuit electrically connects or isolates the second terminal of the first capacitor to/from the second terminal of the fourth capacitor. A fourth switch circuit electrically connects or isolates the second terminal of the third capacitor to/from the second terminal of the second capacitor.

Abstract translation: 电子设备包括电感元件和可变电容器。 每个可变电容器包括：第一和第三电容器，两者具有电连接到电感元件的第一端子的第一端子; 以及第二和第四电容器，它们都具有电连接到电感元件的第二端子的第一端子。 第一开关电路将第一电容器的第二端子与第二电容器的第二端子电连接或隔离。 第二开关电路将第三电容器的第二端子与第四电容器的第二端子电连接或隔离。 第三开关电路将第一电容器的第二端子与第四电容器的第二端子电连接或隔离。 第四开关电路将第三电容器的第二端子与第二电容器的第二端子电连接或隔离。

公开(公告)号：US08204451B1

公开(公告)日：2012-06-19

申请号：US12182232

申请日：2008-07-30

Applicant: Alireza Kheirkhahi ,  Hirad Samavati ,  Srenik Mehta ,  David Su ,  Brian Kaczynski

Inventor： Alireza Kheirkhahi ,  Hirad Samavati ,  Srenik Mehta ,  David Su ,  Brian Kaczynski

IPC: H04B1/40

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

Abstract: A transceiver for use in a wireless device. The transceiver may include a receive portion for receiving an input RF signal. The receive portion may include at least one receive filter which may include a first filter. The transceiver may also include a transmit portion for transmitting an output RF signal. The transmit portion may include at least one transmit filter, which may include the first filter used in the receive portion. The transceiver may further include a plurality of switches, which may include a first switch coupled to an input of the first filter and a second switch coupled to an output of the first filter. The plurality of switches may be configurable to enable use of the first filter in the receive portion for receiving the input RF signal and use of the first filter in the transmit portion for transmitting the output RF signal.

Abstract translation: 用于无线设备的收发器。 收发器可以包括用于接收输入RF信号的接收部分。 接收部分可以包括可以包括第一滤波器的至少一个接收滤波器。 收发器还可以包括用于发送输出RF信号的发送部分。 发射部分可以包括至少一个发射滤波器，其可以包括在接收部分中使用的第一滤波器。 收发器还可以包括多个开关，其可以包括耦合到第一滤波器的输入的第一开关和耦合到第一滤波器的输出的第二开关。 多个开关可以被配置为使得能够使用接收部分中的第一滤波器来接收输入RF信号，并且在发送部分中使用第一滤波器来发送输出RF信号。

公开(公告)号：US08102218B2

公开(公告)日：2012-01-24

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: H03B5/12

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：US07948325B2

公开(公告)日：2011-05-24

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。