公开(公告)号：US08604879B2

公开(公告)日：2013-12-10

申请号：US13435455

申请日：2012-03-30

申请人： Jean-Marc Mourant ,  Feng-Jung Huang ,  Ran Li ,  Chuying Mao

发明人： Jean-Marc Mourant ,  Feng-Jung Huang ,  Ran Li ,  Chuying Mao

IPC分类号： H03F3/45 ,  H03F1/14

CPC分类号： H03F1/34 ,  H03F1/3211 ,  H03F3/45085 ,  H03F2203/45392

摘要： An impedance-matched amplifier utilizing a feed-forward linearization technique involving multiple negative feedbacks and distortion compensation without active tail current sources reduces noise, distortion, power consumption and heat dissipation requirements and increases linearity, dynamic range, signal-to-noise-ratio, sensitivity and quality of service. Some differential amplifier embodiments of the invention consume less than 2 mA at 5 Volts or 10 mW power consumption per 1 mW in peak and sustained output IP3 performance above 40 dBm. In contrast, for an input signal frequency of 200 MHz, a 16 dB gain state-of-the-art differential amplifier consumes 100 mA at 5 Volts with a peak output IP3 of 36 dBm while an implementation of a 16 dB gain differential amplifier embodying the invention consumes 77.7 mA at 5 Volts with a peak output IP3 of 46 dBm and sustained at or above 40 dBm over a wide frequency range.

摘要翻译： 采用前馈线性化技术的阻抗匹配放大器，无需主动尾电流源就可以减少噪声，失真，功耗和散热要求，从而降低线性度，动态范围，信噪比， 敏感度和服务质量。 本发明的一些差分放大器实施例在峰值和持续输出IP3性能高于40dBm时以5伏特或每1mW的10mW功耗消耗小于2mA。 相比之下，对于200 MHz的输入信号频率，16 dB增益最先进的差分放大器在5 V时消耗100 mA，峰值输出IP3为36 dBm，而16 dB增益差分放大器的实现体现在 本发明在5伏特下消耗77.7mA，峰值输出IP3为46dBm，在宽频率范围内维持在40dBm以上。

公开(公告)号：US08575819B1

公开(公告)日：2013-11-05

申请号：US13184970

申请日：2011-07-18

申请人： Harmeet Bhugra ,  Ashwin Samarao

发明人： Harmeet Bhugra ,  Ashwin Samarao

IPC分类号： H01L41/107 ,  H01L41/09 ,  H03H9/00 ,  H03L7/00 ,  H03L1/00

CPC分类号： H03H9/173 ,  H03H2009/02204 ,  H03H2009/155

摘要： Microelectromechanical resonators include a resonator body with a built-in piezoelectric-based varactor diode. This built-in varactor diode supports passive frequency tuning by enabling low-power manipulation of the stiffness of a piezoelectric layer, in response to controlling charge build-up therein at resonance. A resonator may include a composite stack of a bottom electrode, a piezoelectric layer on the bottom electrode and at least one top electrode on the piezoelectric layer. The piezoelectric layer includes a built-in varactor diode, which is defined by at least two regions having different concentrations of electrically active dopants therein.

摘要翻译： 微机电谐振器包括具有内置的基于压电的变容二极管的谐振器体。 这种内置的变容二极管响应于在谐振时控制其中的电荷积聚而支持对压电层的刚度进行低功率操作的无源频率调谐。 谐振器可以包括底部电极的复合叠层，底部电极上的压电层和压电层上的至少一个顶部电极。 压电层包括内置的变容二极管，其由其中具有不同浓度的电活性掺杂剂的至少两个区域限定。

公开(公告)号：US08572151B2

公开(公告)日：2013-10-29

申请号：US12724302

申请日：2010-03-15

申请人： Manoj Gunwani ,  Harekrishna Verma

发明人： Manoj Gunwani ,  Harekrishna Verma

IPC分类号： G06F7/38

CPC分类号： G06F7/5446

摘要： A CORDIC engine includes an N-stage CORDIC processor for performing N micro-iterations of a CORDIC algorithm and generating a 3-vector CORDIC output responsive to a 3-vector CORDIC input. A counter counts a number of M macro-iterations for the CORDIC algorithm and indicates a start of the cycle iterations. A multiplexer selects an input to the N-stage CORDIC processor as the 3-vector CORDIC input at the start of the cycle iterations or the 3-vector CORDIC output at other times. The CORDIC algorithm is complete after N*M clock cycles by generating N micro-iterations for each of the M macro-iterations. In some embodiments, the CORDIC engine is coupled to programmable logic blocks as part of a programmable logic array.

摘要翻译： CORDIC引擎包括N级CORDIC处理器，用于执行CORDIC算法的N个微迭代，并响应于3向量CORDIC输入生成3向量CORDIC输出。 一个计数器计数CORDIC算法的M个宏迭代次数，并指示周期迭代的开始。 复用器在循环迭代开始时将N级CORDIC处理器的输入选择为3向量CORDIC输入，或者在其他时间选择3向量CORDIC输出。 CORDIC算法在N * M个时钟周期之后通过为M个宏迭代中的每一个生成N个微迭代来完成。 在一些实施例中，作为可编程逻辑阵列的一部分，CORDIC引擎耦合到可编程逻辑块。

公开(公告)号：US20130265022A1

公开(公告)日：2013-10-10

申请号：US13441747

申请日：2012-04-06

申请人： Stephen Ulbrich ,  Jack Cornish ,  Kenneth Kwok ,  Jan Krellner

发明人： Stephen Ulbrich ,  Jack Cornish ,  Kenneth Kwok ,  Jan Krellner

IPC分类号： G05F1/10

CPC分类号： H02M3/1584

摘要： Power control systems and power control devices may include a power control chip having a power control module configured to generate a power stage control signal, and at least one power stage having a timing control module that is physically separate from the power control module. The timing control module may be configured to receive the power stage control signal and generate a timing control signal controlling at least one switch to regulate an output voltage of the at least one power stage. A related method may include generating power stage control information indicating an offset between an output voltage and a desired regulated output voltage, transmitting the power stage control information between modules that are physically separate, and timing signals for controlling a switching converter to regulate the output voltage. A related method of auto-configuring a power control system is also disclosed.

摘要翻译： 功率控制系统和功率控制装置可以包括具有功率控制模块的功率控制芯片，该功率控制模块被配置为产生功率级控制信号，以及至少一个功率级，具有与功率控制模块物理分离的定时控制模块。 定时控制模块可以被配置为接收功率级控制信号并产生控制至少一个开关以调节至少一个功率级的输出电压的定时控制信号。 相关方法可以包括产生指示输出电压和期望的调节输出电压之间的偏移的功率级控制信息，在物理上分开的模块之间传输功率级控制信息，以及用于控制开关转换器以调节输出电压的定时信号 。 还公开了一种自动配置功率控制系统的相关方法。

公开(公告)号：US08537040B2

公开(公告)日：2013-09-17

申请号：US13297240

申请日：2011-11-15

申请人： Mansour Keramat ,  Yuan-Ju Chao

发明人： Mansour Keramat ,  Yuan-Ju Chao

IPC分类号： H03M1/66

CPC分类号： G05F3/262 ,  H03M1/745

摘要： Systems and methods are disclosed for performing data conversion by matching current sources using a thin oxide device; and minimizing voltage stress on the thin oxide device during operation or power down.

摘要翻译： 公开了用于通过使用薄氧化物装置匹配电流源来进行数据转换的系统和方法; 并在运行或掉电期间最小化薄氧化物装置上的电压应力。

公开(公告)号：US08513935B2

公开(公告)日：2013-08-20

申请号：US12970758

申请日：2010-12-16

申请人： A. Paul Brokaw

发明人： A. Paul Brokaw

IPC分类号： G05F1/56

CPC分类号： H02M3/156 ,  H02M1/32 ,  H02M2001/0009 ,  H02M2001/0025

摘要： A single replica current is proportional to current through a main switch of a switching power converter. This replica current may be used for current compensation, detection and response to an overload, detection and response to a super-overload, and combinations thereof. An input voltage is switchably coupled to an output signal generating a load current responsive to a switch control. A replica switch generates a replica current proportional to the load current. A ramp modulation signal may be generated. A voltage ramp of the ramp modulation signal may be adjusted in response to the replica current. A feedback difference signal is compared to the ramp modulation signal to generate a comparison output. Comparison of an overload reference voltage to a replica voltage proportional to the replica current generates an overload signal. The switch control is generated responsive to the comparison output and may be modified responsive to the overload signal.

摘要翻译： 单个复制电流与通过开关功率转换器的主开关的电流成比例。 该复制电流可用于电流补偿，检测和响应过载，检测和响应超过载及其组合。 输入电压可切换地耦合到响应于开关控制产生负载电流的输出信号。 复制开关产生与负载电流成比例的复制电流。 可能产生斜坡调制信号。 可以响应于复制电流来调整斜坡调制信号的电压斜坡。 将反馈差信号与斜坡调制信号进行比较以产生比较输出。 过载参考电压与复制电流成比例的复制电压的比较产生过载信号。 响应于比较输出产生开关控制，并且可以响应于过载信号来修改开关控制。

公开(公告)号：US08503514B2

公开(公告)日：2013-08-06

申请号：US12687821

申请日：2010-01-14

申请人： Kiomars Anvari

发明人： Kiomars Anvari

IPC分类号： H04B1/38

CPC分类号： H04L5/16

摘要： A high-speed switch that includes a switch fabric, and both high-speed serial ports and data converter physical ports. A first set of data converter physical ports may perform analog-to-digital conversions, such that an external analog signal may be converted to a digital input signal on the switch. The converted digital input signal may then be routed through the switch fabric in accordance with a serial data protocol. A second set of data converter physical ports may perform digital-to-analog conversions, such that an internal digital signal received from the switch fabric may be converted to an analog output signal on the switch. The converted analog output signal may then be transmitted to an external destination in accordance with a serial data protocol.

摘要翻译： 一种高速交换机，包括交换矩阵，以及高速串行端口和数据转换器物理端口。 第一组数据转换器物理端口可以执行模数转换，使得外部模拟信号可以被转换成开关上的数字输入信号。 转换的数字输入信号然后可以根据串行数据协议通过交换结构路由。 第二组数据转换器物理端口可以执行数模转换，使得从交换结构接收的内部数字信号可以被转换为交换机上的模拟输出信号。 然后可以根据串行数据协议将经转换的模拟输出信号发送到外部目的地。

公开(公告)号：US08447902B2

公开(公告)日：2013-05-21

申请号：US11198512

申请日：2005-08-05

申请人： Ingolf Frank

发明人： Ingolf Frank

IPC分类号： G06F3/00 ,  G06F5/00

CPC分类号： G05B13/026

摘要： A method and apparatus for predictive switching an output have been disclosed.

摘要翻译： 已经公开了用于预测切换输出的方法和装置。

公开(公告)号：US08427130B2

公开(公告)日：2013-04-23

申请号：US12970743

申请日：2010-12-16

申请人： A. Paul Brokaw

发明人： A. Paul Brokaw

IPC分类号： G05F3/16

CPC分类号： H02M1/36

摘要： Soft start circuits for a switching power converter include an amplifier configured to operate from a common bias node and amplify a difference between a positive input and a negative input to generate an amplifier output. A soft start bias circuit supplies a soft start bias current during a soft start process for the switching power converter. An operational bias circuit supplies an operational bias current after the soft start process. In some embodiments, a capacitor is operably coupled to the amplifier output and is configured to provide a frequency compensation for the switching power converter and a charging ramp for the soft start process. In some embodiments, the soft start circuit is configured such that the soft start bias current is at least an order of magnitude smaller than the operational bias current and limits a current that the amplifier can during the soft start process.

摘要翻译： 用于开关功率转换器的软启动电路包括被配置为从公共偏置节点操作并放大正输入和负输入之间的差以产生放大器输出的放大器。 软启动偏置电路在开关电源转换器的软启动过程期间提供软启动偏置电流。 操作偏置电路在软启动过程之后提供工作偏置电流。 在一些实施例中，电容器可操作地耦合到放大器输出，并且被配置为为开关功率转换器提供频率补偿和用于软启动过程的充电斜坡。 在一些实施例中，软启动电路被配置为使得软启动偏置电流比操作偏置电流小至少一个数量级，并且限制在软启动过程期间放大器可以的电流。

公开(公告)号：US20130094598A1

公开(公告)日：2013-04-18

申请号：US13272774

申请日：2011-10-13

申请人： Siamak Bastami

发明人： Siamak Bastami

IPC分类号： H02J17/00 ,  H04L25/00

CPC分类号： H02J50/60 ,  H02J5/005 ,  H02J7/025 ,  H02J17/00 ,  H02J50/12 ,  H02J50/80 ,  H04B5/0037 ,  H04B5/0081

摘要： An inductive wireless power transfer system comprises a transmitter configured to generate an electromagnetic field to a coupling region in response to an input signal. The inductive wireless power transfer control logic is configured to determine an input power of the input signal. The control logic is configured to determine a presence of a foreign object within the coupling region in response to a comparison of the input power and an output power of an output signal of a receiver within the coupling region. Related inductive wireless power transfer systems and methods for detecting a foreign object in an inductive wireless power transfer coupling region of an inductive wireless power transfer system are disclosed.

摘要翻译： 感应式无线电力传输系统包括被配置为响应于输入信号向耦合区域产生电磁场的发射器。 感应无线电力传输控制逻辑被配置为确定输入信号的输入功率。 控制逻辑被配置为响应于输入功率与耦合区域内的接收器的输出信号的输出功率的比较来确定耦合区域内异物的存在。 公开了用于感应无线电力传输系统的感应无线电力传输耦合区域中的异物检测的相关感应无线电力传送系统和方法。