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91. 发明授权

US09036836B2 Amplifier apparatus 有权
标题翻译：放大器装置
公开(公告)号：US09036836B2
公开(公告)日：2015-05-19
申请号：US13701554
申请日：2011-06-16
申请人： Mingxue Zhang , Seigo Ozaki , Tsuyoshi Haga
发明人： Mingxue Zhang , Seigo Ozaki , Tsuyoshi Haga
IPC分类号： H03F99/00 , H03F3/38 , H03F3/20 , H03F3/217
CPC分类号： H03F3/183 , H03F1/0233 , H03F1/26 , H03F3/20 , H03F3/217 , H03F3/2173 , H03F2200/03 , H03F2200/351
摘要： Disclosed is a technique for reducing noise superimposed on an output signal while keeping loop gain constant without increasing the circuit scale and without changing the transfer function of the amplifier apparatus (frequency characteristics of gain and phase). According to the technique, there are included a power-supply voltage control unit 7 for detecting the amplitude level S9 of an input audio signal S1 and outputting power with a voltage value indicated by target set voltage value information Vs corresponding to this amplitude level S9, and a PWM modulation unit 2 including a PWM converter 23 for converting the pulse width of the input audio signal S1 and a correction unit for correcting the signal modulated by the PWM converter 23. The PWM modulation unit 2 corrects the pulse width of a PWM signal S5 modulated by the PWM converter 23 so that the correction unit will cancel out a change in amplification gain of a power amplification unit 4 according to the target set voltage value information Vs.
摘要翻译：公开了一种降低叠加在输出信号上的噪声的技术，同时保持环路增益恒定，而不增加电路规模，并且不改变放大器装置的传递函数（增益和相位的频率特性）。根据该技术，包括电源电压控制单元7，用于检测输入音频信号S1的振幅电平S9，并输出具有与该振幅电平S9对应的目标设定电压值信息Vs表示的电压值的电力，以及PWM调制单元2，其包括用于转换输入音频信号S1的脉冲宽度的PWM转换器23和用于校正由PWM转换器23调制的信号的校正单元。PWM调制单元2校正PWM信号的脉冲宽度 S5调制，使得校正单元将根据目标设定电压值信息Vs抵消功率放大单元4的放大增益的变化。

92. 发明授权

US08994452B2 Low-noise high efficiency bias generation circuits and method 有权
公开(公告)号：US08994452B2
公开(公告)日：2015-03-31
申请号：US13054781
申请日：2009-07-17
申请人： Tae Youn Kim , Robert Mark Englekirk , Dylan J. Kelly
发明人： Tae Youn Kim , Robert Mark Englekirk , Dylan J. Kelly
IPC分类号： H03F3/45 , H03F1/26 , H02M3/07 , H03K17/14 , H03H11/24
CPC分类号： H03F1/26 , H02M3/07 , H03F3/45183 , H03F3/45237 , H03F3/45475 , H03F3/45659 , H03F2200/453 , H03F2200/456 , H03F2200/474 , H03F2203/45138 , H03F2203/45188 , H03F2203/45366 , H03F2203/45418 , H03F2203/45424 , H03F2203/45471 , H03F2203/45642 , H03H11/245 , H03K17/145
摘要： A bias generation method or apparatus defined by any one or any practical combination of numerous features that contribute to low noise and/or high efficiency biasing, including: having a charge pump control clock output with a waveform having limited harmonic content or distortion compared to a sine wave; having a ring oscillator to generating a charge pump clock that includes inverters current limited by cascode devices and achieves substantially rail-to-rail output amplitude; having a differential ring oscillator with optional startup and/or phase locking features to produce two phase outputs suitably matched and in adequate phase opposition; having a ring oscillator of less than five stages generating a charge pump clock; capacitively coupling the clock output(s) to some or all of the charge transfer capacitor switches; biasing an FET, which is capacitively coupled to a drive signal, to a bias voltage via an “active bias resistor” circuit that conducts between output terminals only during portions of a waveform appearing between the terminals, and/or wherein the bias voltage is generated by switching a small capacitance at cycles of said waveform. A charge pump for the bias generation may include a regulating feedback loop including an OTA that is also suitable for other uses, the OTA having a ratio-control input that controls a current mirror ratio in a differential amplifier over a continuous range, and optionally has differential outputs including an inverting output produced by a second differential amplifier that optionally includes a variable ratio current mirror controlled by the same ratio-control input. The ratio-control input may therefore control a common mode voltage of the differential outputs of the OTA. A control loop around the OTA may be configured to control the ratio of one or more variable ratio current mirrors, which may particularly control the output common mode voltage, and may control it such that the inverting output level tracks the non-inverting output level to cause the amplifier to function as a high-gain integrator.

93. 发明申请

US20150063593A1 Noise and Cross-Talk Attenuation in an Audio System by Offsetting Outputs in Phase 审中-公开
标题翻译：音频系统中的噪声和串扰衰减通过在相位上偏移输出
公开(公告)号：US20150063593A1
公开(公告)日：2015-03-05
申请号：US14490459
申请日：2014-09-18
申请人： Douglas E. Heineman , Mark A. Alexander
发明人： Douglas E. Heineman , Mark A. Alexander
IPC分类号： H03G3/30 , H03G1/04
CPC分类号： H03G3/3026 , H03F1/26 , H03F3/185 , H03F3/189 , H03F3/2173 , H03F3/45 , H03F3/45179 , H03F2200/03 , H03G1/04 , H03K5/003
摘要： An amplifier may include two or more pulse-width modulators (PWMs) controlling respective sets of switches to produce an amplified version of a source signal. The clocking for the amplifier may be controlled to delay signal processing within the PWMs relative to one another in time, thereby providing an effective time offset between the absolute moment in time of the edge transition of the controlling signals to the respective sets of switches. The PWMs may include a decrementor that counts down to zero from the next PWM duty-cycle value when a new data sample is detected, beginning a new count when the next sample is present. The PWM output may correspond to the counter value, outputting a pulse when the counter value is nonzero. A “data-sample-ready” signal may be decoded from a master counter, which may be clocked based on the high speed PWM clock, and the delay mechanism may be based on adjusting the decode value to determine when the PWM should initialize to the next data sample.
摘要翻译：放大器可以包括两个或更多个脉冲宽度调制器（PWM），其控制各组开关以产生源信号的放大版本。可以控制放大器的时钟，以在时间上相对于彼此延迟PWM内的信号处理，从而在控制信号的边沿转换到相应的开关组之间的绝对时刻之间提供有效的时间偏移。当检测到新的数据样本时，PWM可以包括从下一个PWM占空比值向下递减到零的递减器，当存在下一个采样时，开始新的计数。 PWM输出可对应于计数器值，当计数器值不为零时输出脉冲。可以从主计数器解码“数据采样就绪”信号，该主计数器可以基于高速PWM时钟来计时，并且延迟机制可以基于调整解码值来确定PWM何时应该初始化为下一个数据样本。

94. 发明申请

US20150061766A1 WIDEBAND INDUCTOR-LESS BALUN-LNA WITH IMPROVED PICKUP NOISE REJECTION 有权
标题翻译：宽带电感器 - 低通滤波器，具有改进的吸音噪声抑制
公开(公告)号：US20150061766A1
公开(公告)日：2015-03-05
申请号：US14042622
申请日：2013-09-30
申请人： BROADCOM CORPORATION
发明人： Jie FANG , Frank Wayne Singor
IPC分类号： H03G3/30 , H03F3/193 , H03F3/45
CPC分类号： H03G3/30 , H03F1/26 , H03F3/193 , H03F3/45179 , H03F3/45632 , H03F2200/294 , H03F2203/45018 , H03F2203/45521 , H03F2203/45528 , H03F2203/45591 , Y10T29/4902
摘要： An inductor-less balun low-noise amplifier (LNA) includes a cross-coupled network coupled between first and second input terminals and first and second summing nodes. The cross-coupled network may include: a first non-inverting gain stage coupled between the first input terminal and the first summing node; a first inverting gain stage coupled between the first input terminal and the second summing node; a second non-inverting gain stage coupled between the second input terminal and the second summing node; and a second inverting gain stage coupled between the second input terminal and the first summing node. The cross coupled network may be configurable to provide common-mode rejection when operated in a differential or in a single-ended mode of operation.
摘要翻译：无电感平衡 - 不平衡变压器低噪声放大器（LNA）包括耦合在第一和第二输入端子与第一和第二求和节点之间的交叉耦合网络。交叉耦合网络可以包括：耦合在第一输入端和第一求和节点之间的第一同相增益级; 第一反相增益级耦合在第一输入端和第二求和节之间; 第二非反相增益级，耦合在第二输入端和第二求和节之间; 以及耦合在第二输入端和第一求和节点之间的第二反相增益级。交叉耦合网络可以被配置为在以差分或单端操作模式操作时提供共模抑制。

95. 发明授权

US08916823B2 Method and system for non-destructive distribution profiling of an element in a film 有权
标题翻译：电影中元素的非破坏性分布分布的方法和系统
公开(公告)号：US08916823B2
公开(公告)日：2014-12-23
申请号：US14080050
申请日：2013-11-14
申请人： ReVera Incoporated
发明人： Paolo deCecco , Bruno Schueler , David Reed , Michael Kwan , David Stephen Ballance
IPC分类号： H01J37/26 , G01N23/227 , H03F1/26
CPC分类号： G01N23/2273 , H01J37/26 , H01J2237/24585 , H03F1/26
摘要： A method to determine a distribution profile of an element in a film. The method comprises exciting an electron energy of an element deposited in a first film, obtaining a first spectrum associating with the electron energy, and removing a background spectrum from the first spectrum. Removing the background value generates a processed spectrum. The method further includes matching the processed spectrum to a simulated spectrum with a known simulated distribution profile for the element in a film comparable to the first film. A distribution profile is obtained for the element in the first film based on the matching of the processed spectrum to a simulated spectrum selected from the set of simulated spectra.
摘要翻译：确定胶片中元素的分布特征的方法。该方法包括激发沉积在第一膜中的元素的电子能量，获得与电子能量相关联的第一光谱，以及从第一光谱去除背景光谱。删除背景值会生成已处理的光谱。该方法还包括将经处理的光谱与具有与第一胶片相当的胶片中元素的已知模拟分布曲线进行匹配。基于所处理的光谱与从所述一组模拟光谱中选择的模拟光谱的匹配，为第一胶片中的元素获得分布曲线。

96. 发明申请

US20140285257A1 APPARATUS AND METHOD FOR AMPLIFYING SIGNAL 有权
标题翻译：放大信号的装置和方法
公开(公告)号：US20140285257A1
公开(公告)日：2014-09-25
申请号：US14190698
申请日：2014-02-26
申请人： SAMSUNG ELECTRONICS CO., LTD.
发明人： Jong Pal KIM
IPC分类号： H03F3/217
CPC分类号： H03F1/26 , H03F3/45183 , H03F3/45968
摘要： An apparatus that amplifies a signal, includes an amplifier configured to amplify the signal. The apparatus further includes a current supplier configured to supply a periodically variable current to the amplifier.
摘要翻译：放大信号的装置包括被配置为放大信号的放大器。该装置还包括被配置为向放大器提供周期性可变电流的当前供应器。

97. 发明申请

US20140220922A1 SIGNAL PROCESSING CIRCUIT WITH CIRCUIT INDUCED NOISE CANCELLATION 有权
标题翻译：信号处理电路与电路诱发噪声消除
公开(公告)号：US20140220922A1
公开(公告)日：2014-08-07
申请号：US14258038
申请日：2014-04-22
申请人： MEDIATEK INC.
发明人： Yuan-Hung Chung , Yi-Shing Shih
IPC分类号： H04B1/12
CPC分类号： H04B1/12 , H03D7/1441 , H03D7/1458 , H03D7/1466 , H03F1/26 , H03F1/56 , H03F3/19 , H03F3/45475 , H03F2200/294 , H04L25/0278
摘要： A signal processing circuit with noise cancellation includes an impedance matching unit and a transconductance stage. The impedance matching unit is disposed at a first path, and arranged to provide input impedance matching, wherein the impedance matching unit is a passive element, and the first path is coupled between a signal input port and a signal output port. The transconductance stage is disposed at a second path, and arranged to guide circuit introduced noise to the signal output port for noise cancellation at the signal output port, wherein the second path is coupled between the signal input port and the signal output port.
摘要翻译：具有噪声消除的信号处理电路包括阻抗匹配单元和跨导级。阻抗匹配单元设置在第一路径处，并且被布置成提供输入阻抗匹配，其中阻抗匹配单元是无源元件，并且第一路径耦合在信号输入端口和信号输出端口之间。跨导级设置在第二路径处，并且被布置成引导电路引入的噪声到信号输出端口用于信号输出端口处的噪声消除，其中第二路径耦合在信号输入端口和信号输出端口之间。

98. 发明授权

US08781539B1 Method and apparatus for reducing wake up time of a powered down device 有权
标题翻译：减少掉电设备唤醒时间的方法和设备
公开(公告)号：US08781539B1
公开(公告)日：2014-07-15
申请号：US13745727
申请日：2013-01-18
申请人： Marvell International Ltd.
发明人： Xiaodong Jin , King Chun Tsai , Yonghua Song
IPC分类号： H04B1/38
CPC分类号： H04B1/1615 , H03F1/26 , H03F1/30 , H03F1/305 , H03F3/24 , H03F2200/294 , H03F2200/372 , H03F2200/453 , H04W52/0274 , Y02D70/142 , Y02D70/40
摘要： A method includes, in at least one aspect, connecting an input of a bias circuit and an output of the bias circuit to another circuit while the other circuit is in a first power mode, such that the bias circuit has an operating state corresponding to the first power mode; switching the input of the bias circuit and the output of the bias circuit from the other circuit to a dummy circuit when a power mode of the other circuit is changed from the first power mode to a second power mode; and maintaining the bias circuit at the operating state corresponding to the first power mode using the dummy circuit while the other circuit is in the second power mode.
摘要翻译：一种方法包括在至少一个方面中，在另一电路处于第一功率模式的同时，将偏置电路的输入和偏置电路的输出连接到另一电路，使得偏置电路具有对应于第一功率模式; 当另一电路的电源模式从第一功率模式改变到第二功率模式时，将偏置电路的输入和偏置电路的输出从另一个电路切换到虚拟电路; 并且在另一个电路处于第二功率模式的同时，使用虚拟电路将偏置电路保持在与第一功率模式对应的工作状态。

99. 发明授权

US08754710B2 Low-noise amplifiers for RF receiver 有权
标题翻译：射频接收机的低噪声放大器
公开(公告)号：US08754710B2
公开(公告)日：2014-06-17
申请号：US13530251
申请日：2012-06-22
申请人： Qiang Li , Si-Ning Zhou , Chih-Ming Hung
发明人： Qiang Li , Si-Ning Zhou , Chih-Ming Hung
IPC分类号： H03F3/68
CPC分类号： H03F1/26 , H03F1/3211 , H03F3/45179 , H03F2200/294 , H03F2203/45356 , H03F2203/45386
摘要： Disclosed are low-noise amplifiers and SAW-less receivers. An exemplary amplifier includes at least two amplifier modules. The amplifier modules share a common output node and comprise a common input to which the amplifier modules are AC or DC coupled for receiving an inbound RF signal. The amplifier modules operate at different biases.
摘要翻译：公开了低噪声放大器和无SAW接收器。示例性放大器包括至少两个放大器模块。放大器模块共享公共输出节点并且包括公共输入，放大器模块被AC或DC耦合到该输入端以接收入站RF信号。放大器模块以不同的偏置运行。

100. 发明授权

US08750818B2 Signal processing circuit with circuit induced noise cancellation 有权
标题翻译：信号处理电路与电路引起的噪声消除
公开(公告)号：US08750818B2
公开(公告)日：2014-06-10
申请号：US13792224
申请日：2013-03-11
申请人： Mediatek Inc.
发明人： Yuan-Hung Chung , Yi-Shing Shih
IPC分类号： H04B1/10 , H04B1/16
CPC分类号： H04B1/12 , H03D7/1441 , H03D7/1458 , H03D7/1466 , H03F1/26 , H03F1/56 , H03F3/19 , H03F3/45475 , H03F2200/294 , H04L25/0278
摘要： A signal processing circuit with noise cancellation includes an impedance matching unit and a transconductance stage. The impedance matching unit is disposed at a first path, and arranged to provide input impedance matching, wherein the impedance matching unit is a bilateral element, and the first path is coupled between a signal input port and a signal output port. The transconductance stage is disposed at a second path, and arranged to guide circuit introduced noise to the signal output port for noise cancellation at the signal output port, wherein the second path is coupled between the signal input port and the signal output port.
摘要翻译：具有噪声消除的信号处理电路包括阻抗匹配单元和跨导级。阻抗匹配单元设置在第一路径处，并且被布置成提供输入阻抗匹配，其中阻抗匹配单元是双向元件，并且第一路径耦合在信号输入端口和信号输出端口之间。跨导级设置在第二路径处，并且被布置成引导电路引入的噪声到信号输出端口用于信号输出端口处的噪声消除，其中第二路径耦合在信号输入端口和信号输出端口之间。

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