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1. 发明授权

US07496338B1 Multi-segment gain control system 有权
标题翻译：多段增益控制系统
公开(公告)号：US07496338B1
公开(公告)日：2009-02-24
申请号：US11027710
申请日：2004-12-29
申请人： John Groe , Naone Farias , Damian Costa , Babak Nejati
发明人： John Groe , Naone Farias , Damian Costa , Babak Nejati
IPC分类号： H04B1/06 , H03G5/16 , H03F3/45
CPC分类号： H03G3/3078 , H03G3/3068
摘要： Multi-segment gain control system. Apparatus is provided for a multi-segment gain control. The apparatus includes logic to convert a gain control signal to an exponential signal, and logic to map the exponential signal to multiple control signals that are used to control multiple gain stages to produce linear multi-segment gain control.
摘要翻译：多段增益控制系统提供了用于多段增益控制的装置。该装置包括将增益控制信号转换为指数信号的逻辑，以及将指数信号映射到用于控制多个增益级以产生线性多段增益控制的多个控制信号的逻辑。

2. 发明授权

US07825714B1 Offset nulling for decreasing offset between currents in a differential signaling system 有权
标题翻译：用于减小差分信号系统中电流之间的偏移量的偏移归零
公开(公告)号：US07825714B1
公开(公告)日：2010-11-02
申请号：US12137984
申请日：2008-06-12
申请人： John B. Groe , Michael Naone Farias , Babak Nejati , Marc Facchini , Thomas Hardin
发明人： John B. Groe , Michael Naone Farias , Babak Nejati , Marc Facchini , Thomas Hardin
IPC分类号： H03L5/00
CPC分类号： H03K19/018528 , H03K5/003 , H03K19/00361
摘要： Systems and methods for nulling offsets in differential signaling systems are described. A first circuit may be configured to sense the difference between a first differential current and a second differential current and provide a sense signal to an adjustment circuit. The adjustment circuit may be configured to generate a correction signal based on the sense signal, where the correction signal is combined with the first differential current to reduce the offset between the first differential current and the second differential current. Alternately, the correction signal may be combined with the first and second differential currents to reduce the offset. The process may be repeated until the corrected first differential current and the second differential current are within a desired tolerance.
摘要翻译：描述了差分信号系统中的零位补偿的系统和方法。第一电路可以被配置为感测第一差分电流和第二差分电流之间的差异，并且向调节电路提供感测信号。调整电路可以被配置为基于感测信号产生校正信号，其中校正信号与第一差分电流组合以减小第一差分电流和第二差分电流之间的偏移。或者，校正信号可以与第一和第二差分电流组合以减小偏移。可以重复该过程，直到校正的第一差分电流和第二差分电流在期望的公差内。

3. 发明授权

US08847351B2 Integrated power amplifier with load inductor located under IC die 有权
标题翻译：集成功率放大器，负载电感位于IC芯片下方
公开(公告)号：US08847351B2
公开(公告)日：2014-09-30
申请号：US12705493
申请日：2010-02-12
申请人： Guy Klemens , Thomas A Myers , Norman L Frederick, Jr. , Yu Zhao , Babak Nejati , Nathan M Pletcher , Aristotele Hadjichristos
发明人： Guy Klemens , Thomas A Myers , Norman L Frederick, Jr. , Yu Zhao , Babak Nejati , Nathan M Pletcher , Aristotele Hadjichristos
IPC分类号： H01L27/08
CPC分类号： H03F3/195 , H01L23/645 , H01L23/66 , H01L2223/6655 , H01L2223/6661 , H01L2224/16225 , H01L2924/00011 , H01L2924/00014 , H01L2924/1305 , H01L2924/19015 , H01L2924/3011 , H01L2924/00 , H01L2224/0401
摘要： A compact integrated power amplifier is described herein. In an exemplary design, an apparatus includes (i) an integrated circuit (IC) die having at least one transistor for a power amplifier and (ii) an IC package having a load inductor for the power amplifier. The IC die is mounted on the IC package with the transistor(s) located over the load inductor. In an exemplary design, the IC die includes a transistor manifold that is placed over the load inductor on the IC package. The transistor(s) are fabricated in the transistor manifold, have a drain connection in the center of the transistor manifold, and have source connections on two sides of the transistor manifold. The IC die and the IC package may include one or more additional power amplifiers. The transistor(s) for each power amplifier may be located over the load inductor for that power amplifier.
摘要翻译：这里描述了紧凑的集成功率放大器。在示例性设计中，装置包括（i）具有用于功率放大器的至少一个晶体管的集成电路（IC）管芯，以及（ii）具有用于功率放大器的负载电感器的IC封装。 IC芯片安装在IC封装上，晶体管位于负载感应器上方。在示例性设计中，IC管芯包括放置在IC封装上的负载电感器上的晶体管歧管。晶体管制造在晶体管歧管中，在晶体管歧管的中心具有漏极连接，并且在晶体管歧管的两侧具有源极连接。 IC芯片和IC封装可以包括一个或多个附加的功率放大器。每个功率放大器的晶体管可以位于该功率放大器的负载电感上。

4. 发明授权

US08750810B2 Power amplifier with switched output matching for multi-mode operation 有权
标题翻译：功率放大器，具有开关输出匹配多模式操作
公开(公告)号：US08750810B2
公开(公告)日：2014-06-10
申请号：US12623248
申请日：2009-11-20
申请人： Nathan Pletcher , Aristotele Hadjichristos , Yu Zhao , Babak Nejati
发明人： Nathan Pletcher , Aristotele Hadjichristos , Yu Zhao , Babak Nejati
IPC分类号： H01Q11/12 , H04B1/04
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。

5. 发明授权

US08634782B2 Multi-antenna wireless device with power combining power amplifiers 有权
标题翻译：具有功率合成功率放大器的多天线无线设备
公开(公告)号：US08634782B2
公开(公告)日：2014-01-21
申请号：US13274256
申请日：2011-10-14
申请人： Bhushan Shanti Asuri , Babak Nejati
发明人： Bhushan Shanti Asuri , Babak Nejati
IPC分类号： H04M1/00
CPC分类号： H04B1/0064 , H04B1/0483 , H04B1/406
摘要： A wireless device with power combining power amplifiers to support transmission on multiple antennas is disclosed. The power amplifiers may be operated together to obtain higher output power or separately to support transmission on multiple antennas. In an exemplary design, an apparatus includes first and second power amplifiers. The first power amplifier amplifies a first input signal and provides a first output signal for a first antenna in a first operating mode (e.g., a MIMO mode or a transmit diversity mode). The second power amplifier amplifies the first input signal or a second input signal and provides a second output signal for a second antenna in the first operating mode. The first and second power amplifiers are power combined in a second operating mode to provide a third output signal, which has a higher maximum output power than the first or second output signal.
摘要翻译：公开了一种具有功率组合功率放大器以支持多个天线上的传输的无线设备。功率放大器可以一起操作以获得更高的输出功率或单独地支持在多个天线上的传输。在示例性设计中，装置包括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，并以第一操作模式（例如，MIMO模式或发射分集模式）为第一天线提供第一输出信号。第二功率放大器放大第一输入信号或第二输入信号，并且在第一操作模式中为第二天线提供第二输出信号。第一和第二功率放大器在第二操作模式下被电力组合以提供第三输出信号，其具有比第一或第二输出信号更高的最大输出功率。

6. 发明授权

US08599938B2 Linear and polar dual mode transmitter circuit 有权
标题翻译：线性和极性双模发射电路
公开(公告)号：US08599938B2
公开(公告)日：2013-12-03
申请号：US12277913
申请日：2008-11-25
申请人： Sankaran Aniruddhan , Chiewcharn Narathong , Ravi Sridhara , Babak Nejati
发明人： Sankaran Aniruddhan , Chiewcharn Narathong , Ravi Sridhara , Babak Nejati
IPC分类号： H04L27/00
CPC分类号： H03C5/00 , H03C3/40 , H03D7/1441 , H03D7/1458 , H03D7/1483 , H03D7/1491 , H03D7/165 , H03D7/166 , H03D2200/0023 , H03D2200/0084 , H03G3/3042 , H04L27/34 , H04L27/36 , H04L27/361 , H04L27/362 , H04L27/38 , H04L27/389
摘要： Method and apparatus for configuring a transmitter circuit to support linear or polar mode. In the linear mode, a baseband signal is specified by adjusting the amplitudes of in-phase (I) and quadrature (Q) signals, while in the polar mode, the information signal is specified by adjusting the phase of a local oscillator (LO) signal and the amplitude of either an I or a Q signal. In an exemplary embodiment, two mixers are provided for both linear and polar mode, with a set of switches selecting the appropriate input signals provided to one of the mixers based on whether the device is operating in linear or polar mode. In an exemplary embodiment, each mixer may be implemented using a scalable architecture that efficiently adjusts mixer size based on required transmit power.
摘要翻译：用于配置发射机电路以支持线性或极坐标模式的方法和装置。在线性模式中，通过调整同相（I）和正交（Q）信号的幅度来指定基带信号，而在极坐标模式中，通过调整本地振荡器（LO）的相位来指定信息信号，信号和I或Q信号的振幅。在示例性实施例中，为线性模式和极坐标模式提供两个混合器，一组开关基于装置是以线性模式还是极坐标模式选择提供给混合器之一的适当输入信号。在示例性实施例中，可以使用可升级架构来实现每个混合器，该架构可以基于所需的发射功率有效地调整混频器的大小。

7. 发明授权

US08461921B2 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：US08461921B2
公开(公告)日：2013-06-11
申请号：US13226400
申请日：2011-09-06
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, an apparatus includes a plurality of amplifiers. The apparatus may also include a plurality of switches, each switch coupled to an output of an associated amplifier in the plurality of amplifiers and configured to provide an amplified signal in a first mode and bypass the associated amplifier and provide an associated bypass signal in a second mode. Further, the apparatus may include an output circuit including a plurality of matching circuits, each matching circuit coupled to an associated amplifier in the plurality of amplifiers and an associated switch in the plurality of switches.
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，装置包括多个放大器。该装置还可以包括多个开关，每个开关耦合到多个放大器中的相关联的放大器的输出，并且被配置为以第一模式提供放大的信号并且旁路相关的放大器并在第二模式中提供相关的旁路信号模式。此外，该装置可以包括包括多个匹配电路的输出电路，每个匹配电路耦合到多个放大器中的相关联的放大器以及多个开关中的关联开关。

8. 发明申请

US20110043285A1 DIGITAL TUNABLE INTER-STAGE MATCHING CIRCUIT 有权
标题翻译：数字可调节间歇匹配电路
公开(公告)号：US20110043285A1
公开(公告)日：2011-02-24
申请号：US12715254
申请日：2010-03-01
申请人： Yu Zhao , Babak Nejati , Nathan M. Pletcher , Aristotele Hadjichristos
发明人： Yu Zhao , Babak Nejati , Nathan M. Pletcher , Aristotele Hadjichristos
IPC分类号： H03F3/16
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谐级间匹配电路。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）和可调谐级间匹配电路。可调谐级间匹配电路包括可以在离散步骤中变化的可调谐电容器，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，可调谐电容器包括（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，用于每个电容器的一个开关。每个开关可以被接通以选择一个相关联的电容器或关闭以取消选择相关联的电容器。可调谐电容器还可以包括与多个电容器并联耦合的固定电容器。

9. 发明申请

US20100291888A1 MULTI-MODE MULTI-BAND POWER AMPLIFIER MODULE 有权
标题翻译：多模多功率放大器模块
公开(公告)号：US20100291888A1
公开(公告)日：2010-11-18
申请号：US12575414
申请日：2009-10-07
申请人： Aristotele Hadjichristos , Puay Hoe See , Babak Nejati , Guy Klemens , Norman Frederick, JR. , Gurkanwal Singh Sahota , Marco Cassia , Nathan Pletcher , Yu Zhao , Thomas Myers
发明人： Aristotele Hadjichristos , Puay Hoe See , Babak Nejati , Guy Klemens , Norman Frederick, JR. , Gurkanwal Singh Sahota , Marco Cassia , Nathan Pletcher , Yu Zhao , Thomas Myers
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，每种模式都适用于特定的无线电技术。每个功率放大器至少支持两种模式。 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。

10. 发明申请

US20090190692A1 LINEAR AND POLAR DUAL MODE TRANSMITTER CIRCUIT 有权
标题翻译：线性和极性双模发射机电路
公开(公告)号：US20090190692A1
公开(公告)日：2009-07-30
申请号：US12277913
申请日：2008-11-25
申请人： Sankaran Aniruddhan , Chiewcharn Narathong , Ravi Sridhara , Babak Nejati
发明人： Sankaran Aniruddhan , Chiewcharn Narathong , Ravi Sridhara , Babak Nejati
IPC分类号： H04B1/04 , H04L27/00
CPC分类号： H03C5/00 , H03C3/40 , H03D7/1441 , H03D7/1458 , H03D7/1483 , H03D7/1491 , H03D7/165 , H03D7/166 , H03D2200/0023 , H03D2200/0084 , H03G3/3042 , H04L27/34 , H04L27/36 , H04L27/361 , H04L27/362 , H04L27/38 , H04L27/389
摘要： Method and apparatus for configuring a transmitter circuit to support linear or polar mode. In the linear mode, a baseband signal is specified by adjusting the amplitudes of in-phase (I) and quadrature (Q) signals, while in the polar mode, the information signal is specified by adjusting the phase of a local oscillator (LO) signal and the amplitude of either an I or a Q signal. In an exemplary embodiment, two mixers are provided for both linear and polar mode, with a set of switches selecting the appropriate input signals provided to one of the mixers based on whether the device is operating in linear or polar mode. In an exemplary embodiment, each mixer may be implemented using a scalable architecture that efficiently adjusts mixer size based on required transmit power.
摘要翻译：用于配置发射机电路以支持线性或极坐标模式的方法和装置。在线性模式中，通过调整同相（I）和正交（Q）信号的幅度来指定基带信号，而在极坐标模式中，通过调整本地振荡器（LO）的相位来指定信息信号，信号和I或Q信号的振幅。在示例性实施例中，为线性模式和极坐标模式提供两个混合器，一组开关基于装置是以线性模式还是极坐标模式选择提供给混合器之一的适当输入信号。在示例性实施例中，可以使用可升级架构来实现每个混合器，该架构可以基于所需的发射功率有效地调整混频器的大小。

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