中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

404 records (took 0.036 seconds)

    FREQUENCY GENERATOR APPARATUS AND CONTROL CIRCUIT THEREOF
    161.
    发明申请
    FREQUENCY GENERATOR APPARATUS AND CONTROL CIRCUIT THEREOF 有权
    频率发生器装置及其控制电路

    公开(公告)号：US20080030243A1

    公开(公告)日：2008-02-07

    申请号：US11462802

    申请日：2006-08-07

    Applicant: Tsuoe-Hsiang Liao

    Inventor： Tsuoe-Hsiang Liao

    IPC: H03B19/00

    CPC classification number: G11C17/18 ,  G11C17/16 ,  H01L23/5256 ,  H01L2924/0002 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1253 ,  H03B5/1268 ,  H03B2201/025 ,  H03D13/004 ,  H03K3/0315 ,  H01L2924/00

    Abstract: A frequency generator apparatus and a control circuit thereof are provided. The frequency generator apparatus comprises the control circuit and a frequency generator, wherein the control circuit contains an electric fuse (efuse). The control circuit outputs an enabling signal according to the state of the efuse. The frequency generator is coupled to the control circuit, receives the enabling signal, and decides to output a frequency signal or not according to the enabling signal.

    Abstract translation: 提供了一种频率发生器装置及其控制电路。 频率发生器装置包括控制电路和频率发生器，其中控制电路包含电熔丝（efuse）。 所述控制电路根据所述efuse的状态输出使能信号。 频率发生器耦合到控制电路，接收使能信号，并根据使能信号决定输出频率信号。

    Direct digitally tunable microwave oscillators and filters
    162.
    发明授权
    Direct digitally tunable microwave oscillators and filters 有权
    直接数字可调微波振荡器和滤波器

    公开(公告)号：US07310215B2

    公开(公告)日：2007-12-18

    申请号：US10420167

    申请日：2003-04-21

    Applicant: Eliezer Pasternak

    Inventor： Eliezer Pasternak

    IPC: H01H5/00

    CPC classification number: H04B1/18 ,  H03B2201/0208 ,  H03B2201/025

    Abstract: A tunable element in the microwave frequency range is described that may include one or more tunable elements that are directly digitally controlled by a digital bus connecting a digital control circuit to each controlled element. In particular, each digital signal is filtered by a digital isolation technique so that the signal reaches the tunable elements with very low noise. The low noise digital signals are then converted to analog control voltages. The direct D/A conversion is accomplished by a special D/A converter which is manufactured as an integral part of a substrate. This D/A converter in accordance with the invention may consist of a resistor ladder or a directly digitally controlled capacitor. The direct digitally controlled capacitor may be a cantilevered type capacitor having multiple separate electrodes or sub-plates representing binary bits that may be used to control the capacitor. A low cost microwave oscillator is disclosed in which some of the filters and oscillators are direct digitally tuned elements.

    Abstract translation: 描述了微波频率范围中的可调元件，其可以包括由数字总线直接数字控制的一个或多个可调元件，数字总线将数字控制电路连接到每个受控元件。 特别地，每个数字信号被数字隔离技术滤波，使得信号以非常低的噪声到达可调谐元件。 然后将低噪声数字信号转换为模拟控制电压。 直接D / A转换是通过专门的D / A转换器来实现的，该D / A转换器被制造为衬底的一个组成部分。 根据本发明的该D / A转换器可以由电阻梯或直接数字控制的电容器组成。 直接数控电容器可以是具有多个分开的电极或表示可用于控制电容器的二进制位的子板的悬臂式电容器。 公开了一种低成本的微波振荡器，其中一些滤波器和振荡器是直接的数字调谐元件。

    APPARATUS AND METHOD FOR PHASE LOCK GAIN CONTROL USING UNIT CURRENT SOURCES
    163.
    发明申请
    APPARATUS AND METHOD FOR PHASE LOCK GAIN CONTROL USING UNIT CURRENT SOURCES 有权
    使用单元电流源进行相位锁定增益控制的装置和方法

    公开(公告)号：US20070268076A1

    公开(公告)日：2007-11-22

    申请号：US11754804

    申请日：2007-05-29

    Applicant: Ramon Gomez

    Inventor： Ramon Gomez

    IPC: H03L7/08

    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。

    Apparatus and method for phase lock loop gain control using unit current sources
    164.
    发明授权
    Apparatus and method for phase lock loop gain control using unit current sources 有权
    使用单位电流源进行锁相环增益控制的装置和方法

    公开(公告)号：US07271667B2

    公开(公告)日：2007-09-18

    申请号：US11459205

    申请日：2006-07-21

    Applicant: Ramon A. Gomez

    Inventor： Ramon A. Gomez

    IPC: H03L7/08

    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 PILL 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一些PILL特性的PLL控制产生的，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。

    Quadrature voltage controlled oscillators with phase shift detector
    166.
    发明申请
    Quadrature voltage controlled oscillators with phase shift detector 有权

    公开(公告)号：US20060238259A1

    公开(公告)日：2006-10-26

    申请号：US11473620

    申请日：2006-06-22

    Applicant: Emmanuel Metaxakis

    Inventor： Emmanuel Metaxakis

    IPC: H03L7/00

    CPC classification number: H03L7/00 ,  H03B5/1215 ,  H03B5/1231 ,  H03B5/124 ,  H03B27/00 ,  H03B2201/025 ,  H03J2200/10

    Abstract: In wireless application there is made use of a quadrature oscillators that generate signals that are capable of oscillating at quadrature of each other. The quadrature oscillator is comprised of two differential modified Colpitts oscillators. A capacitor bank allows for the selection of a desired frequency from a plurality of discrete possible frequencies. The quadrature oscillator is further coupled with a phase-error detector connected at the point-of-use of the generated ‘I’ and ‘Q’ channels and through the control of current sources provides corrections means to ensure that the phase shift at the point-of-use remains at the desired ninety degrees.

    Integrated clock generator and timing/frequency reference
    167.
    发明申请
    Integrated clock generator and timing/frequency reference 有权
    集成时钟发生器和定时/频率参考

    公开(公告)号：US20060152293A1

    公开(公告)日：2006-07-13

    申请号：US11384758

    申请日：2006-03-20

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

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

    IPC: H03B1/00

    CPC classification number: G06F1/04 ,  G06F1/08 ,  H03B5/06 ,  H03B5/1203 ,  H03B5/1215 ,  H03B5/1218 ,  H03B5/1228 ,  H03B5/1253 ,  H03B5/1256 ,  H03B5/1265 ,  H03B2201/025 ,  H03J1/0008 ,  H03J2200/10 ,  H03L1/022 ,  H03L3/00 ,  H03L7/08 ,  H03L7/0812 ,  H03L7/0891 ,  H03L7/099

    Abstract: In various embodiments, the invention provides a 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 is integrated with 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振荡器拓扑的时钟发生器和/或定时和频率参考，其具有频率控制器以控制和提供稳定的谐振频率，其与其它第二电路（例如处理器 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。

    Voltage-controlled oscillator, radio communication apparatus and voltage-controlled oscillation method
    170.
    发明申请
    Voltage-controlled oscillator, radio communication apparatus and voltage-controlled oscillation method 有权
    压控振荡器，无线通信装置和压控振荡方法

    公开(公告)号：US20050190002A1

    公开(公告)日：2005-09-01

    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: H03B1/00 ,  H03B5/00 ,  H03B5/12 ,  H03B7/06 ,  H03C3/22 ,  H04B1/16

    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。

Patent Agency Ranking