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31. 发明申请

US20140043206A1 MULTI-THROW ANTENNA SWITCH WITH OFF-STATE CAPACITANCE REDUCTION 有权
标题翻译：多级天线开关，具有不同的电容减少功能
公开(公告)号：US20140043206A1
公开(公告)日：2014-02-13
申请号：US13570908
申请日：2012-08-09
申请人： Minsik Ahn , Chang-Ho Lee , Aristotele Hadjichristos
发明人： Minsik Ahn , Chang-Ho Lee , Aristotele Hadjichristos
IPC分类号： H01Q1/50
CPC分类号： H01Q1/50 , H04B1/006 , H04B1/406
摘要： A multi-throw antenna switch with off-state capacitance reduction is disclosed. In an exemplary embodiment, an apparatus is provided that includes a plurality of first stage switches connected to an antenna, and a plurality of second stage switches connected to the plurality of first stage switches, each first stage switch connected in series to one or more second stage switches to form a plurality of switchable signal paths connected to the antenna.
摘要翻译：公开了一种具有关闭状态电容降低的多掷天线开关。在示例性实施例中，提供了一种装置，其包括连接到天线的多个第一级开关和连接到多个第一级开关的多个第二级开关，每个第一级开关串联连接到一个或多个第二级开关级开关以形成连接到天线的多个可切换信号路径。

32. 发明授权

US08536950B2 Multi-stage impedance matching 有权
标题翻译：多级阻抗匹配
公开(公告)号：US08536950B2
公开(公告)日：2013-09-17
申请号：US12641228
申请日：2009-12-17
申请人： Babak Nejati , Yu Zhao , Nathan M Pletcher , Aristotele Hadjichristos , Puay Hoe See
发明人： Babak Nejati , Yu Zhao , Nathan M Pletcher , Aristotele Hadjichristos , Puay Hoe See
IPC分类号： H03F3/04
CPC分类号： H03F1/565 , H03F3/211 , H03F3/72
摘要： Exemplary techniques for performing impedance matching are described. In an exemplary embodiment, the apparatus may include an amplifier (e.g., a power amplifier) coupled to first and second matching circuits. The first matching circuit may include multiple stages coupled to a first node and may provide input impedance matching for the amplifier. The second matching circuit may include multiple stages coupled to a second node and may provide output impedance matching for the amplifier. At least one switch may be coupled between the first and second nodes and may bypass or select the amplifier. The first and second nodes may have a common impedance. The apparatus may further include a second amplifier coupled in parallel with the amplifier and further to the matching circuits. The second matching circuit may include a first input stage coupled to the amplifier, a second input stage coupled to the second amplifier, and a second stage coupled to the two input stages via switches.
摘要翻译：描述了用于执行阻抗匹配的示例性技术。在示例性实施例中，该装置可以包括耦合到第一和第二匹配电路的放大器（例如，功率放大器）。第一匹配电路可以包括耦合到第一节点的多个级并且可以为放大器提供输入阻抗匹配。第二匹配电路可以包括耦合到第二节点的多个级并且可以为放大器提供输出阻抗匹配。至少一个开关可以耦合在第一和第二节点之间，并且可以旁路或选择放大器。第一和第二节点可以具有公共阻抗。该装置还可以包括与放大器并联并且进一步耦合到匹配电路的第二放大器。第二匹配电路可以包括耦合到放大器的第一输入级，耦合到第二放大器的第二输入级，以及经由开关耦合到两个输入级的第二级。

33. 发明授权

US08385854B2 Adaptive parametric power amplifier protection circuit 有权
标题翻译：自适应参数功率放大器保护电路
公开(公告)号：US08385854B2
公开(公告)日：2013-02-26
申请号：US12470418
申请日：2009-05-21
申请人： Aristotele Hadjichristos , Gurkanwal S. Sahota
发明人： Aristotele Hadjichristos , Gurkanwal S. Sahota
IPC分类号： H01Q11/12 , H04B1/04 , H03G3/10
CPC分类号： H04B1/0466 , H03F1/523 , H03F3/24 , H03F2200/447 , H03F2200/468
摘要： A device including a gain control element coupled prior to or within a radio frequency (RF) power amplifier (PA) with an adaptive parametric PA protection circuit is described. In an exemplary embodiment, the device includes a gain control element coupled prior to a radio frequency power amplifier with a power stage with corresponding transistor breakdown threshold values, having an adaptive parametric PA protection circuit configured to receive at least one power stage drain-source voltage parameter value, at least one power stage drain-gate voltage parameter value, and at least one power stage drain-source current parameter value, and including an adaptive parametric PA protection circuit having a first section for processing the parameter values and a second section for generating a gain correction signal to adjust the gain control element with optimal power added efficiency (PAE) for the power stage within the corresponding transistor breakdown threshold values.
摘要翻译：描述了在具有自适应参数PA保护电路的射频（RF）功率放大器（PA）之前或之内耦合的增益控制元件的装置。在示例性实施例中，该装置包括增益控制元件，该增益控制元件在具有相应晶体管击穿阈值的功率级的射频功率放大器之前耦合，具有自适应参数PA保护电路，该自适应参数PA保护电路被配置为接收至少一个功率级漏 - 源电压参数值，至少一个功率级漏极栅极电压参数值和至少一个功率级漏源电流参数值，并且包括具有用于处理参数值的第一部分的自适应参数PA保护电路和用于产生增益校正信号，以在相应的晶体管击穿阈值内对功率级的最佳功率附加效率（PAE）调节增益控制元件。

34. 发明申请

US20130043946A1 LOW NOISE AMPLIFIERS WITH COMBINED OUTPUTS 审中-公开
标题翻译：具有组合输出的低噪声放大器
公开(公告)号：US20130043946A1
公开(公告)日：2013-02-21
申请号：US13366992
申请日：2012-02-06
申请人： Aristotele Hadjichristos , Gurkanwal Singh Sahota
发明人： Aristotele Hadjichristos , Gurkanwal Singh Sahota
IPC分类号： H03F3/68 , H03F3/45
摘要： Multiple low noise amplifiers (LNAs) with combined outputs are disclosed. In an exemplary design, an apparatus includes a front-end module and an integrated circuit (IC). The front-end module includes a plurality of LNAs having outputs that are combined. The IC includes receive circuits coupled to the plurality of LNAs via a single interconnection. In an exemplary design, each of the plurality of LNAs may be enabled or disabled via a respective control signal for that LNA. The front-end module may also include receive filters coupled to the plurality of LNAs and a switchplexer coupled to the receive filters. The front-end module may further include at least one power amplifier, and the IC may further include transmit circuits coupled to the at least one power amplifier.
摘要翻译：公开了具有组合输出的多个低噪声放大器（LNA）。在示例性设计中，装置包括前端模块和集成电路（IC）。前端模块包括具有组合的输出的多个LNA。 IC包括经由单个互连耦合到多个LNA的接收电路。在示例性设计中，可以通过用于该LNA的相应控制信号来使能或禁用多个LNA中的每一个。前端模块还可以包括耦合到多个LNA的接收滤波器和耦合到接收滤波器的交换器。前端模块还可以包括至少一个功率放大器，并且IC还可以包括耦合到至少一个功率放大器的发射电路。

35. 发明申请

US20130003783A1 GLOBAL NAVIGATION SATELLITE SYSTEM RECEIVER WITH FILTER BYPASS MODE FOR IMPROVED SENSITIVITY 有权
标题翻译：全球导航卫星系统接收器，带有过滤器旁路模式，提高灵敏度
公开(公告)号：US20130003783A1
公开(公告)日：2013-01-03
申请号：US13172653
申请日：2011-06-29
申请人： Prasad Srinivasa Siva Gudem , Liang Zhao , I-Hsiang Lin , Zhijie Xiong , Bhushan Shanti Asuri , Aristotele Hadjichristos
发明人： Prasad Srinivasa Siva Gudem , Liang Zhao , I-Hsiang Lin , Zhijie Xiong , Bhushan Shanti Asuri , Aristotele Hadjichristos
IPC分类号： H04B1/707
CPC分类号： H04B1/525 , H04B1/3805
摘要： A global navigation satellite system receiver with filter bypass mode for improved sensitivity is disclosed. In an aspect, an apparatus is provided that includes a non-bypass signal path coupled to a receiver, the non-bypass signal path comprising a filter. The apparatus also includes a bypass signal path coupled to the receiver, the bypass signal path configure to bypass the filter, and a switch to couple an antenna to the non-bypass signal path during time intervals when signals transmitted by an unrelated local transmitter are transmitted with a signal power that exceeds a selected threshold, and to couple the antenna to the bypass signal path during other time intervals.
摘要翻译：公开了一种具有滤波器旁路模式以提高灵敏度的全球导航卫星系统接收机。在一方面，提供一种装置，其包括耦合到接收器的非旁路信号路径，非旁路信号路径包括滤波器。该装置还包括耦合到接收器的旁路信号路径，配置为旁路滤波器的旁路信号路径以及在由不相关的本地发射机发送的信号被发送的时间间隔期间将天线耦合到非旁路信号路径的开关信号功率超过所选阈值，并且在其它时间间隔期间将天线耦合到旁路信号路径。

36. 发明授权

US08102205B2 Amplifier module with multiple operating modes 有权
标题翻译：具有多种工作模式的放大器模块
公开(公告)号：US08102205B2
公开(公告)日：2012-01-24
申请号：US12757679
申请日：2010-04-09
申请人： Nathan M Pletcher , Aristotele Hadjichristos , Babak Nejati
发明人： Nathan M Pletcher , Aristotele Hadjichristos , Babak Nejati
IPC分类号： H03F1/14
CPC分类号： H03F1/0277 , H03F1/56 , H03F3/195 , H03F3/211 , H03F3/245 , H03F3/72 , H03F2200/222 , H03F2200/27 , H03F2200/318 , H03F2200/387 , H03F2200/411 , H03F2200/451 , H03F2200/522 , H03F2200/75 , H03F2203/21136 , H03F2203/21139 , H03F2203/21142 , H03F2203/21157 , H03F2203/21175 , H03F2203/21196 , H03F2203/7206 , H03F2203/7236 , H03G1/0088
摘要： An amplifier module with multiple operating modes is described. In an exemplary design, the amplifier module includes an amplifier (e.g., a power amplifier), a switch, and an output circuit. The amplifier receives and amplifies an input signal and provides an amplified signal in a first mode. The switch is coupled to the output of the amplifier and bypasses the amplifier and provides a bypass signal in a second mode. The output circuit is coupled to the amplifier and the switch. The output circuit performs output impedance matching for the amplifier in the first mode. The output circuit also (i) receives the amplified signal and provides an output signal in the first mode and (ii) receives the bypass signal and provides the output signal in the second mode. The amplifier is enabled in the first mode and disabled in the second mode.
摘要翻译：描述具有多种工作模式的放大器模块。在示例性设计中，放大器模块包括放大器（例如，功率放大器），开关和输出电路。放大器接收并放大输入信号并在第一模式中提供放大的信号。开关耦合到放大器的输出端，并且旁路放大器并在第二模式中提供旁路信号。输出电路耦合到放大器和开关。输出电路在第一模式下对放大器执行输出阻抗匹配。输出电路还（i）接收放大的信号并在第一模式中提供输出信号，并且（ii）接收旁路信号并在第二模式中提供输出信号。放大器在第一种模式下使能，在第二种模式下禁用。

37. 发明申请

US20100321086A1 POWER AND IMPEDANCE MEASUREMENT CIRCUITS FOR A WIRELESS COMMUNICATION DEVICE 有权
标题翻译：无线通信设备的功率和阻抗测量电路
公开(公告)号：US20100321086A1
公开(公告)日：2010-12-23
申请号：US12580988
申请日：2009-10-16
申请人： Puay Hoe See , Gary J. Ballantyne , Gurkanwal Singh Sahota , Aristotele Hadjichristos , Alberto Cicalini
发明人： Puay Hoe See , Gary J. Ballantyne , Gurkanwal Singh Sahota , Aristotele Hadjichristos , Alberto Cicalini
IPC分类号： G06F7/44
CPC分类号： H04B1/0458 , H03H7/40
摘要： Exemplary embodiments disclosed are directed to power and impedance measurement circuits that may be used to measure power and/or impedance are described. A measurement circuit may include a sensor and a computation unit. The sensor may sense (i) a first voltage signal across a series circuit coupled to a load to obtain a first sensed signal and (ii) a second voltage signal at a designated end of the series circuit to obtain a second sensed signal. The sensor may mix (i) a first version of the first sensed signal with a first version of the second sensed signal to obtain a first sensor output and (ii) a second version of the first sensed signal with a second version of the second sensed signal to obtain a second sensor output. The computation unit may determine the impedance and/or delivered power at the designated end of the series circuit based on the sensor outputs.
摘要翻译：所公开的示例性实施例涉及可用于测量功率和/或阻抗的功率和阻抗测量电路。测量电路可以包括传感器和计算单元。传感器可以感测（i）跨耦合到负载的串联电路的第一电压信号以获得第一感测信号，以及（ii）串联电路的指定端的第二电压信号以获得第二感测信号。传感器可以将（i）第一感测信号的第一版本与第二感测信号的第一版本混合以获得第一传感器输出，以及（ii）第一感测信号的第二版本，具有第二感测的第二版本信号以获得第二传感器输出。计算单元可以基于传感器输出来确定串联电路的指定端处的阻抗和/或传递功率。

38. 发明授权

US07826816B2 Systems, methods, and apparatus for frequency conversion 有权
标题翻译：用于频率转换的系统，方法和装置
公开(公告)号：US07826816B2
公开(公告)日：2010-11-02
申请号：US11531314
申请日：2006-09-13
申请人： Wei Zhuo , Aristotele Hadjichristos , Gurkanwal S. Sahota , Solti Peng
发明人： Wei Zhuo , Aristotele Hadjichristos , Gurkanwal S. Sahota , Solti Peng
IPC分类号： H04B1/26
CPC分类号： H03D7/166 , H03H19/008 , H03H2007/0192
摘要： A method according to one embodiment includes using a quadrature set of local oscillator signals having duty cycles of substantially less than fifty percent to perform a mixing operation on a radio-frequency current signal. Other embodiments include using a quadrature set of local oscillator signals having duty cycles of less than twenty-five percent.
摘要翻译：根据一个实施例的方法包括使用具有基本上小于百分之五十的占空比的本地振荡器信号的正交组来对射频电流信号执行混频操作。其他实施例包括使用占空比小于百分之二十五的本地振荡器信号的正交集合。

39. 发明申请

US20100022206A1 TRANSMISSION NOISE CANCELLATION 有权
标题翻译：传输噪声消除
公开(公告)号：US20100022206A1
公开(公告)日：2010-01-28
申请号：US12180350
申请日：2008-07-25
申请人： Vladimir Aparin , Aristotele Hadjichristos , Marco Cassia
发明人： Vladimir Aparin , Aristotele Hadjichristos , Marco Cassia
IPC分类号： H04B1/04
CPC分类号： H04B1/0475 , H03F1/34 , H03F3/24 , H04B2001/0433
摘要： Exemplary embodiments of the disclosure are directed to down-converting an RF signal of a transmitter to baseband, filtering the down-converted signal, and generating a composite signal based on the filtered down-converted signal and a transmission based-band signal.
摘要翻译：本公开的示例性实施例涉及将发射机的RF信号下变频到基带，对下变频信号进行滤波，并且基于滤波的下变频信号和基于传输的频带信号来生成复合信号。

40. 发明申请

US20090061803A1 DIFFERENTIAL TO SINGLE-ENDED CONVERSION FOR RADIO FREQUENCY DEVICES 有权
标题翻译：差分到无线电频率设备的单端转换
公开(公告)号：US20090061803A1
公开(公告)日：2009-03-05
申请号：US11847252
申请日：2007-08-29
申请人： Aristotele Hadjichristos
发明人： Aristotele Hadjichristos
IPC分类号： H04B1/12 , H04B1/16 , H03B19/00
CPC分类号： H03H11/32
摘要： In an exemplary embodiment, a circuit is disclosed comprising a plurality of inputs, each input to receive a radio frequency waveform from a plurality of differential input waveforms having different phases; and an inverter circuit to invert a waveform from the plurality of differential inputs waveforms to a substantially same phase as a non-inverted input waveform. The circuit further comprises a combiner node to combine the inverted and the non-inverted input waveforms into an output waveform.
摘要翻译：在示例性实施例中，公开了一种包括多个输入的电路，每个输入端用于从具有不同相位的多个差分输入波形接收射频波形; 以及反相器电路，用于将波形从多个差分输入波形反转为与非反相输入波形基本相同的相位。电路还包括组合器节点，以将反相和非反相输入波形组合成输出波形。

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