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1. 发明申请

WO2011022551A1 STACKED AMPLIFIER WITH DIODE-BASED BIASING 审中-公开
标题翻译：基于二极管偏置的堆叠放大器
公开(公告)号：WO2011022551A1
公开(公告)日：2011-02-24
申请号：PCT/US2010/046023
申请日：2010-08-19
申请人： QUALCOMM INCORPORATED , ZHAO, Yu , PLETCHER, Nathan M.
发明人： ZHAO, Yu , PLETCHER, Nathan M.
IPC分类号： H03F1/02 , H03F1/30 , H03F3/189
CPC分类号： H03F1/0283 , H03F1/301 , H03F3/189
摘要： Techniques for improving linearity of amplifiers are described. In an exemplary design, an amplifier (e.g., a power amplifier) may include a plurality of transistors coupled in a stack and at least one diode. The plurality of transistors may receive and amplify an input signal and provide an output signal. The at least one diode may be operatively coupled to at least one transistor in the stack. Each diode may provide a variable bias voltage to an associated transistor in the stack. Each diode may have a lower voltage drop across the diode at high input power and may provide a higher bias voltage to the associated transistor at high input power. The at least one transistor may have higher gain at high input power due to the higher bias voltage from the at least one diode. The higher gain may improve the linearity of the amplifier.
摘要翻译：描述了用于提高放大器线性度的技术。在示例性设计中，放大器（例如，功率放大器）可以包括耦合在堆叠中的多个晶体管和至少一个二极管。多个晶体管可以接收和放大输入信号并提供输出信号。至少一个二极管可以可操作地耦合到堆叠中的至少一个晶体管。每个二极管可以向堆叠中的相关联的晶体管提供可变偏置电压。每个二极管可以在高输入功率下在二极管上具有较低的电压降，并且可以在高输入功率下向相关联的晶体管提供更高的偏置电压。由于来自至少一个二极管的较高偏置电压，至少一个晶体管可能在高输入功率下具有更高的增益。较高的增益可以提高放大器的线性度。

2. 发明申请

WO2011011757A1 POWER AMPLIFIER WITH SWITCHED OUTPUT MATCHING FOR MULTI-MODE OPERATION 审中-公开
标题翻译：具有多模操作的开关量输出匹配功率放大器
公开(公告)号：WO2011011757A1
公开(公告)日：2011-01-27
申请号：PCT/US2010/043156
申请日：2010-07-23
申请人： QUALCOMM Incorporated , PLETCHER, Nathan M. , HADJICHRISTOS, Aristotele , ZHAO, Yu , NEJATI, Babak
发明人： PLETCHER, Nathan M. , HADJICHRISTOS, Aristotele , ZHAO, Yu , NEJATI, Babak
IPC分类号： H04B1/04 , H03F1/56
CPC分类号： H04B1/0458 , H03F1/56 , H03F3/245 , H04B1/406
摘要： Exemplary embodiments are directed to a transmitter with a power amplifier and a switched output matching circuit implementing a plurality of output paths for a plurality of operating modes is described. The power amplifier receives an input RF signal and provides an amplified RF signal. An output matching network performs impedance transformation from low impedance at the power amplifier output to higher impedance at the matching network output. The plurality of output paths are coupled to the output matching network. Each output path provides a different target output impedance for the power amplifier and routes the amplified RF signal from the power amplifier to an antenna when that output path is selected. Each output path may include a matching network coupled in series with a switch. The matching network provides the target output impedance for the power amplifier when the output path is selected. The switch couples or decouples the output path to/from the power amplifier.
摘要翻译：示例性实施例涉及具有功率放大器和实现用于多个操作模式的多个输出路径的切换输出匹配电路的发射机。功率放大器接收输入RF信号并提供放大的RF信号。输出匹配网络执行从功率放大器输出端的低阻抗到匹配网络输出端的较高阻抗的阻抗变换。多个输出路径耦合到输出匹配网络。当选择该输出路径时，每个输出路径为功率放大器提供不同的目标输出阻抗，并将放大的RF信号从功率放大器路由到天线。每个输出路径可以包括与开关串联耦合的匹配网络。当选择输出路径时，匹配网络为功率放大器提供目标输出阻抗。开关将输出路径耦合到/从功率放大器解耦。

3. 发明申请

WO2019027534A1 SELECTABLE FILTERING WITH SWITCHING 审中-公开
公开(公告)号：WO2019027534A1
公开(公告)日：2019-02-07
申请号：PCT/US2018/033639
申请日：2018-05-21
申请人： QUALCOMM INCORPORATED
发明人： PRESTI, Calogero Davide , SPRING, Ryan Scott Castro , ZHAO, Yu
IPC分类号： H04B15/04
摘要： An example apparatus is disclosed for selectable filtering with switching. The apparatus includes an antenna switch module mounted to a surface of a substrate. The antenna switch module includes an antenna node, multiple switchable nodes, and multiple switches configured to connect or disconnect the multiple switchable nodes to or from the antenna node. The antenna switch module also includes a capacitor coupled in series with a first switch of the multiple switches between the antenna node and a first switchable node of the multiple switchable nodes. The capacitor is configured to provide a capacitance for a selectable filter. The apparatus also includes an inductor that is supported by the substrate and coupled between the first switchable node and a ground. The inductor is configured to provide an inductance for the selectable filter.

4. 发明申请

WO2011022549A2 DIGITAL TUNABLE INTER-STAGE MATCHING CIRCUIT 审中-公开
标题翻译：数字可调节的级间匹配电路
公开(公告)号：WO2011022549A2
公开(公告)日：2011-02-24
申请号：PCT/US2010/046021
申请日：2010-08-19
申请人： QUALCOMM INCORPORATED , ZHAO, Yu , NEJATI, Babak , PLETCHER, Nathan M. , HADJICHRISTOS, Aristotele
发明人： ZHAO, Yu , NEJATI, Babak , PLETCHER, Nathan M. , HADJICHRISTOS, Aristotele
IPC分类号： H03H7/38
CPC分类号： H03F1/42 , H03F1/223 , H03F3/193 , H03F2200/318 , H03H7/40
摘要： A tunable inter-stage matching circuit that can improve performance is described. In an exemplary design, an apparatus includes a first active circuit (e.g., a driver amplifier), a second active circuit (e.g., a power amplifier), and a tunable inter-stage matching circuit coupled between the first and second active circuits. The tunable inter-stage matching circuit includes a tunable capacitor that can be varied in discrete steps to adjust impedance matching between the first and second active circuits. In an exemplary design, the tunable capacitor includes (i) a plurality of capacitors coupled in parallel and (ii) a plurality of switches coupled to the plurality of capacitors, one switch for each capacitor. Each switch may be turned on to select an associated capacitor or turned off to unselect the associated capacitor. The tunable capacitor may further include a fixed capacitor coupled in parallel with the plurality of capacitors.
摘要翻译：描述了可以提高性能的可调节级间匹配电路。在示例性设计中，装置包括耦合在第一和第二有源电路之间的第一有源电路（例如，驱动器放大器），第二有源电路（例如功率放大器）以及可调谐的级间匹配电路。可调级间匹配电路包括可调电容器，该可调电容器可以在离散步骤中变化以调整第一和第二有源电路之间的阻抗匹配。在示例性设计中，可调电容器包括（i）并联耦合的多个电容器和（ii）耦合到多个电容器的多个开关，每个电容器一个开关。每个开关可以打开以选择关联的电容器或关闭以取消选择关联的电容器。可调电容器还可以包括与多个电容器并联耦合的固定电容器。

5. 发明申请

WO2011020112A1 AMPLIFIER WITH VARIABLE MATCHING CIRCUIT TO IMPROVE LINEARITY 审中-公开
标题翻译：具有可变匹配电路的放大器，以提高线性度
公开(公告)号：WO2011020112A1
公开(公告)日：2011-02-17
申请号：PCT/US2010/045652
申请日：2010-08-16
申请人： QUALCOMM Incorporated , PLETCHER, Nathan M. , ZHAO, Yu
发明人： PLETCHER, Nathan M. , ZHAO, Yu
IPC分类号： H03F1/56 , H03F1/08 , H03F3/193
CPC分类号： H03F1/565 , H03F1/086 , H03F3/193
摘要： Techniques for reducing distortion and improving linearity of amplifiers are described. In an exemplary design, an apparatus includes a driver amplifier, a variable matching circuit, and a power amplifier. The driver amplifier amplifies a first RF signal and provides a second RF signal. The variable matching circuit receives the second RF signal and provides a third RF signal. The power amplifier amplifies the third RF signal and provides a fourth RF signal. The variable matching circuit matches a fixed impedance at the output of the driver amplifier to a variable impedance at the input of the power amplifier in order to improve the linearity of the amplifiers. In an exemplary design, the power amplifier includes a first transistor (e.g., an NMOS transistor) of a first type, and the variable matching circuit includes a second transistor (e.g., a PMOS transistor) of a second type that is different from the first type.
摘要翻译：描述了减小失真和提高放大器线性度的技术。在示例性设计中，装置包括驱动放大器，可变匹配电路和功率放大器。驱动器放大器放大第一RF信号并提供第二RF信号。可变匹配电路接收第二RF信号并提供第三RF信号。功率放大器放大第三RF信号并提供第四RF信号。可变匹配电路将驱动放大器输出端的固定阻抗与功率放大器输入端的可变阻抗相匹配，以提高放大器的线性度。在示例性设计中，功率放大器包括第一类型的第一晶体管（例如，NMOS晶体管），并且可变匹配电路包括与第一类型不同的第二类型的第二晶体管（例如，PMOS晶体管）类型。

6. 发明申请

WO2013112631A1 MULTI-MODE BYPASS DRIVER AMPLIFIER WITH TUNABLE LOAD MATCHING 审中-公开
标题翻译：多模式旁路驱动放大器，具有可调载荷匹配
公开(公告)号：WO2013112631A1
公开(公告)日：2013-08-01
申请号：PCT/US2013/022806
申请日：2013-01-23
申请人： QUALCOMM INCORPORATED
发明人： ZHAO, Yu , PLETCHER, Nathan M.
IPC分类号： H03F1/02 , H03F1/56 , H03F3/195 , H03F3/24 , H03F3/72 , H03F3/21
CPC分类号： H03F1/0277 , H03F1/565 , H03F3/195 , H03F3/211 , H03F3/245 , H03F3/72 , H03F2200/213 , H03F2200/222 , H03F2200/318 , H03F2200/378 , H03F2200/387 , H03F2200/411 , H03F2203/21136 , H03F2203/21175 , H03F2203/7233 , H03F2203/7239
摘要： A multi-mode driver amplifier with tunable load matching is disclosed. In an exemplary design, an apparatus includes a multi-mode driver amplifier and a tunable impedance matching circuit. The driver amplifier amplifies an input radio frequency, RF, signal and provides an amplified RF signal. The tunable impedance matching circuit matches an output impedance of the driver amplifier. The apparatus may include a main transmit path (510) and a bypass transmit path (512). The bypass transmit path (512) may include the driver amplifier (542) and the tunable impedance matching circuit (552) and no power amplifier. The main transmit path (510) may include a second driver amplifier (540) and a power amplifier (560). The main transmit path (510) may be selected for transmit power levels higher than a threshold level, and the bypass transmit path (512) may be selected for transmit power levels lower than the threshold level.
摘要翻译：公开了一种具有可调负载匹配的多模驱动放大器。在示例性设计中，装置包括多模式驱动器放大器和可调谐阻抗匹配电路。驱动器放大器放大输入射频，RF信号，并提供放大的RF信号。可调阻抗匹配电路匹配驱动放大器的输出阻抗。该装置可以包括主发射路径（510）和旁路发射路径（512）。旁路发射路径（512）可以包括驱动放大器（542）和可调谐阻抗匹配电路（552），而不包括功率放大器。主发射路径（510）可以包括第二驱动放大器（540）和功率放大器（560）。可以选择主发射路径（510）用于高于阈值电平的发射功率电平，并且可以选择旁路发射路径（512）用于低于阈值电平的发射功率电平。

7. 发明申请

WO2011017368A1 MULTI-STAGE IMPEDANCE MATCHING 审中-公开
标题翻译：多级阻抗匹配
公开(公告)号：WO2011017368A1
公开(公告)日：2011-02-10
申请号：PCT/US2010/044306
申请日：2010-08-03
申请人： QUALCOMM INCORPORATED , NEJATI, Babak , ZHAO, Yu , PLETCHER, Nathan M. , HADJICHRISTOS, Aristotele , SEE, Puay Hoe
发明人： NEJATI, Babak , ZHAO, Yu , PLETCHER, Nathan M. , HADJICHRISTOS, Aristotele , SEE, Puay Hoe
IPC分类号： H03F1/56 , H03F3/72
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。

8. 发明申请

WO2010132618A1 MULTI-MODE MULTI-BAND POWER AMPLIFIER MODULE 审中-公开
标题翻译：多模多功率放大器模块
公开(公告)号：WO2010132618A1
公开(公告)日：2010-11-18
申请号：PCT/US2010/034621
申请日：2010-05-12
申请人： QUALCOMM INCORPORATED , HADJICHRISTOS, Aristotele , SEE, Puay Hoe , NEJATI, Babak , KLEMENS, Guy , FREDERICK, Norman, L., Jr. , SAHOTA, Gurkanwal, Singh , CASSIA, Marco , PLETCHER, Nathan, M. , ZHAO, Yu , MYERS, Thomas, A.
发明人： HADJICHRISTOS, Aristotele , SEE, Puay Hoe , NEJATI, Babak , KLEMENS, Guy , FREDERICK, Norman, L., Jr. , SAHOTA, Gurkanwal, Singh , CASSIA, Marco , PLETCHER, Nathan, M. , ZHAO, Yu , MYERS, Thomas, A.
IPC分类号： H04B1/04
CPC分类号： H04B1/0458 , H03F1/0277 , H03F3/24 , H03F3/72 , H03F2203/7236 , H04B1/0483
摘要： A multi-mode multi-band power amplifier (PA) module is described. In an exemplary design, the PA module includes multiple power amplifiers, multiple matching circuits, and a set of switches. Each power amplifier provides power amplification for its input signal when selected. Each matching circuit provides impedance matching and filtering for its power amplifier and provides a respective output signal. The switches configure the power amplifiers to support multiple modes, with each mode being for a particular radio technology. Each power amplifier supports at least two modes. The PA module may further include a driver amplifier and an additional matching circuit. The driver amplifier amplifies an input signal and provides an amplified signal to the power amplifiers. The additional matching circuit combines the outputs of other matching circuits and provides an output signal with higher output power. The driver amplifier and the power amplifiers can support multiple output power levels.
摘要翻译：描述了多模式多频带功率放大器（PA）模块。在示例性设计中，PA模块包括多个功率放大器，多个匹配电路和一组开关。每个功率放大器在选择时为其输入信号提供功率放大。每个匹配电路为其功率放大器提供阻抗匹配和滤波，并提供相应的输出信号。这些开关配置功率放大器以支持多种模式，每种模式用于特定的无线电技术。每个功率放大器支持至少两种模式。 PA模块还可以包括驱动器放大器和附加匹配电路。驱动器放大器放大输入信号并向功率放大器提供放大的信号。附加匹配电路组合其他匹配电路的输出，并提供具有较高输出功率的输出信号。驱动器放大器和功率放大器可以支持多个输出功率电平。

9. 发明申请

WO2013052709A1 MULTI-ANTENNA WIRELESS DEVICE WITH POWER AMPLIFIERS HAVING DIFFERENT CHARACTERISTICS 审中-公开
标题翻译：具有不同特性功率放大器的多天线无线设备
公开(公告)号：WO2013052709A1
公开(公告)日：2013-04-11
申请号：PCT/US2012/058814
申请日：2012-10-04
申请人： QUALCOMM INCORPORATED
发明人： ASURI, Bhushan Shanti , ZHAO, Yu
IPC分类号： H04B1/04 , H04B1/40 , H04B1/00
CPC分类号： H04B1/406 , H04B1/0064 , H04B1/0483
摘要： A wireless device with power amplifiers having different characteristics to support transmission on multiple antennas is disclosed. These power amplifiers may have different gain, different maximum output power levels, etc. in order to meet requirements of different wireless systems. In an exemplary design, an apparatus includes first and second power amplifiers having different characteristics. The first power amplifier amplifies a first input signal and provides a first output signal for a first antenna. The second power amplifier amplifies the first input signal or a second input signal and provides a second output signal for a second antenna, e.g., in a MIMO mode or a transmit diversity mode. Only the first or second power amplifier amplifies another input signal and provides another output signal to the first antenna, e.g., in a CDMA mode or a GSM mode.
摘要翻译：具有功率放大器的无线设备具有不同的特性以支持多个天线上的传输。这些功率放大器可能具有不同的增益，不同的最大输出功率等级，以满足不同无线系统的要求。在示例性设计中，装置包括具有不同特征的第一和第二功率放大器。第一功率放大器放大第一输入信号并提供用于第一天线的第一输出信号。第二功率放大器放大第一输入信号或第二输入信号，并且例如以MIMO模式或发射分集模式为第二天线提供第二输出信号。只有第一或第二功率放大器放大另一输入信号，并且例如以CDMA模式或GSM模式向第一天线提供另一输出信号。

10. 发明申请

WO2014150273A1 ADAPATIVE POWER AMPLIFIER 审中-公开
标题翻译：自适应功率放大器
公开(公告)号：WO2014150273A1
公开(公告)日：2014-09-25
申请号：PCT/US2014/022781
申请日：2014-03-10
申请人： QUALCOMM INCORPORATED
发明人： CHA, Jeongwon , LEE, Chang-Ho , KIM, Woonyun , HADJICHRISTOS, Aristotele , ZHAO, Yu
IPC分类号： H03F1/02 , H03F1/22 , H03F3/24 , H03F1/32 , H03F3/217
CPC分类号： H03F3/193 , H03F1/0211 , H03F1/0261 , H03F1/22 , H03F1/223 , H03F1/3205 , H03F3/21 , H03F3/2171 , H03F3/245 , H03F2200/18 , H03F2200/61
摘要： Exemplary embodiments are related to an envelope-tracking power amplifier (310). A device may include a first transistor (MN) of a plurality of transistors in a stacked configuration configured to receive a supply voltage (VDD) varying with an envelope of a radio- frequency (RF) input signal. The device may further include a second transistor (Ml) of the plurality in the stacked configuration coupled to a reference voltage and configured to receive a dynamic bias voltage (VG1) varying inversely proportional to the supply voltage (VDD).
摘要翻译：示例性实施例涉及包络跟踪功率放大器（310）。器件可以包括堆叠配置中的多个晶体管的第一晶体管（MN），其被配置为接收随着射频（RF）输入信号的包络而变化的电源电压（VDD）。该器件还可包括多个堆叠配置中的第二晶体管（M1），其耦合到参考电压并被配置为接收与电源电压（VDD）成反比变化的动态偏置电压（VG1）。

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