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1. 发明申请

WO2003073603A3 CURRENT MODULATOR WITH DYNAMIC AMPLIFIER IMPEDANCE COMPENSATION 审中-公开
公开(公告)号：WO2003073603A3
公开(公告)日：2003-09-04
申请号：PCT/US2003/001766
申请日：2003-01-21
申请人： ERICSSON INC. , CAMP, William , HADJICHRISTOS, Aristotele , PEHLKE, David
发明人： CAMP, William , HADJICHRISTOS, Aristotele , PEHLKE, David
IPC分类号： H03F1/02
摘要： An amplitude modulation circuit provides modulated supply current (IPA) possibly in combination with modulated supply voltage (VPA) to a radio frequency power amplifier (48) and includes a detection circuit (66) responsive to changes in the ratio of that voltage (VPA) to the modulated supply current (IPA), described herin as its AM modulation impedance. Such impedance (resistance) changes commonly arise from changing coupling characteristics at the antenna assembly (54) driven by the power amplifier (48). A gain control circuit may be associated with the detection circuit (66), and made responsive thereto, thus allowing adjustment of modulation gain control responsive to changes in AM modulation impendance.

2. 发明申请

WO2003073603A2 CURRENT MODULATOR WITH DYNAMIC AMPLIFIER IMPEDANCE COMPENSATION 审中-公开
标题翻译：具有动态放大器阻抗补偿的电流调制器
公开(公告)号：WO2003073603A2
公开(公告)日：2003-09-04
申请号：PCT/US2003/001766
申请日：2003-01-21
申请人： ERICSSON INC. , CAMP, William , HADJICHRISTOS, Aristotele , PEHLKE, David
发明人： CAMP, William , HADJICHRISTOS, Aristotele , PEHLKE, David
IPC分类号： H03F
CPC分类号： H03G3/3047 , H03F1/0233 , H03F1/0272 , H03F1/56 , H03F2200/504 , H03G3/004 , H03G3/3042
摘要： An amplitude modulation circuit provides modulated supply current, possibly in combination with modulated supply voltage, to a radio frequency power amplifier, and includes a detection circuit responsive to changes in the ratio of that voltage to the modulated supply current, described herein as its AM modulation impedance. Such impedance (resistance) changes commonly arise from changing coupling characteristics at the antenna assembly driven by the power amplifier. A gain control circuit may be associated with the detection circuit, and made responsive thereto, thus allowing adjustment of modulation gain control responsive to changes in AM modulation impedance. That arrangement permits the modulator to hold a fixed modulation gain over changing AM modulation impedance, while other embodiments vary modulation gain responsive to power amplifier impedance changes to avoid signal clipping that might otherwise occur where increased power amplifier resistance would result in voltages exceeding the supply voltage of the power amplifier.
摘要翻译：幅度调制电路将调制的电源电流（可能与调制的电源电压组合）提供给射频功率放大器，并且包括响应于该电压与调制电源电流的比率变化的检测电路，这里描述为其AM调制阻抗。这种阻抗电阻的改变通常是由功率放大器驱动的天线组件上的耦合特性的变化引起的。增益控制电路可以与检测电路相关联，并且对其进行响应，从而允许响应于AM调制阻抗的变化来调整调制增益控制。这种布置允许调制器在改变AM调制阻抗的情况下保持固定的调制增益，而其他实施例响应于功率放大器阻抗变化来改变调制增益，以避免在功率放大器电阻增加导致电压超过电源电压的情况下可能发生的信号限幅的功率放大器。

3. 发明申请

WO2002082633A3 SYSTEM AND METHOD FOR CURRENT-MODE AMPLITUDE MODULATION 审中-公开
公开(公告)号：WO2002082633A3
公开(公告)日：2002-10-17
申请号：PCT/US2002/007788
申请日：2002-03-11
申请人： ERICSSON INC. , HADJICHRISTOS, Aristotele , PEHLKE, David
发明人： HADJICHRISTOS, Aristotele , PEHLKE, David
IPC分类号： H03C1/36
摘要： An amplifier circuit includes a power amplifier biased for saturated mode operation, and a contrallable current source to provide current to the power amplifer. The controllable current source effects desired amplitude modulation of the output signal from the power amplifier by modulating the supply current it provides responsive to an amplitude information signal.

4. 发明申请

WO2002082633A2 SYSTEM AND METHOD FOR CURRENT-MODE AMPLITUDE MODULATION 审中-公开
标题翻译：用于电流模式振幅调制的系统和方法
公开(公告)号：WO2002082633A2
公开(公告)日：2002-10-17
申请号：PCT/US2002/007788
申请日：2002-03-11
申请人： ERICSSON INC. , HADJICHRISTOS, Aristotele , PEHLKE, David
发明人： HADJICHRISTOS, Aristotele , PEHLKE, David
IPC分类号： H03C1/36
CPC分类号： H03F1/0261 , H03F2200/504 , H04B1/04 , H04B2001/0491
摘要： An amplifier circuit includes a power amplifier biased for saturated mode operation, and a contrallable current source to provide current to the power amplifer. The controllable current source effects desired amplitude modulation of the output signal from the power amplifier by modulating the supply current it provides responsive to an amplitude information signal.
摘要翻译：放大器电路包括偏置用于饱和模式操作的功率放大器和用于向功率放大器提供电流的可逆电流源。可控电流源通过调制其响应于幅度信息信号提供的电源电流来影响来自功率放大器的输出信号的期望幅度调制。

5. 发明申请

WO2002078173A2 SYSTEM AND METHOD FOR RF SIGNAL AMPLIFICATION 审中-公开
标题翻译：用于RF信号放大的系统和方法
公开(公告)号：WO2002078173A2
公开(公告)日：2002-10-03
申请号：PCT/US2002/007588
申请日：2002-03-11
申请人： ERICSSON INC. , PEHLKE, David , HADJICHRISTOS, Aristotele
发明人： PEHLKE, David , HADJICHRISTOS, Aristotele
IPC分类号： H03F1/02
CPC分类号： H03F1/0222 , H03F1/0277 , H03F2200/331 , H03F2200/504
摘要： A branched power amplifier circuit includes two or more amplifier segments or branches, each with a corresponding lossy modulator. The branched power amplifier may be dynamically resized by enabling different ones of its branches to deliver peak efficiency at a number of different amplifier output power levels. Each amplifier branch operates in a saturated mode and selectively amplifies an RF input signal. The lossy modulators provide either supply voltage or supply current modulation to corresponding amplifier branches, thus imparting highly linear amplitude modulation to the overall output signal generated by branched power amplifier, despite its saturated mode operation. The branched power amplifier circuit may be configured such that particular combinations of segments have peak efficiencies matched to the needs of one or more air interface standards used in wireless mobile communication systems.
摘要翻译：分支功率放大器电路包括两个或更多个放大器段或分支，每个具有相应的有损调制器。分支功率放大器可以通过使其不同的分支在多个不同的放大器输出功率电平上提供峰值效率来动态地调整大小。每个放大器分支工作在饱和模式，并有选择地放大RF输入信号。有损调制器为相应的放大器分支提供电源电压或电源电流调制，从而对分支功率放大器产生的总体输出信号赋予高度线性的幅度调制，尽管其饱和模式操作。分支功率放大器电路可以被配置为使得段的特定组合具有与在无线移动通信系统中使用的一个或多个空中接口标准的需要相匹配的峰值效率。

6. 发明申请

WO2006017202A1 SYSTEM AND METHOD FOR CURRENT-MODE AMPLITUDE MODULATION 审中-公开
标题翻译：用于电流模式振幅调制的系统和方法
公开(公告)号：WO2006017202A1
公开(公告)日：2006-02-16
申请号：PCT/US2005/024406
申请日：2005-07-11
申请人： ERICSSON INC. , PEHLKE, David R. , HADJICHRISTOS, Aristotele
发明人： PEHLKE, David R. , HADJICHRISTOS, Aristotele
IPC分类号： H03C1/06
CPC分类号： H03C1/06 , H03C5/00 , H03F1/02 , H03F1/0222 , H03F1/0261 , H03F1/32 , H03F3/24 , H03F2200/324 , H03F2200/456 , H03F2200/504 , H04B1/04 , H04B1/0483 , H04B2001/045 , H04B2001/0491
摘要： An amplifier circuit includes a power amplifier biased for saturated mode operation, and a controllable current source to provide supply current to the power amplifier. The controllable current source effects desired amplitude modulation of the output signal from the power amplifier by modulating the supply current it provides responsive to an amplitude information signal. In one or more embodiments, the current source includes a circuit that is configured to adjust one or more transmitter operating parameters responsive to detecting changes in the effective DC resistance of the power amplifier. For example, the circuit may generate a compensation signal that reduces the effective DC resistance responsive to detecting that the effective DC resistance has undesirably increased. By way of non-limiting examples, such compensation may be effected by changing a current mirror, an amplifier-to-antenna impedance matching, an amplifier bias or device size, or imposing some form of transmit signal back-off.
摘要翻译：放大器电路包括偏置用于饱和模式操作的功率放大器和可控电流源，以向功率放大器提供电源电流。可控电流源通过调制其响应于幅度信息信号提供的电源电流来影响来自功率放大器的输出信号的期望幅度调制。在一个或多个实施例中，电流源包括被配置为响应于检测功率放大器的有效直流电阻的变化来调整一个或多个发射器操作参数的电路。例如，电路可以响应于检测到有效DC电阻不期望地增加而产生降低有效DC电阻的补偿信号。作为非限制性示例，可以通过改变电流镜，放大器到天线阻抗匹配，放大器偏置或器件尺寸或者施加某种形式的发射信号反馈来实现这种补偿。

7. 发明申请

WO2005062565A1 POLAR MODULATION USING AMPLITUDE MODULATED QUADRATURE SIGNALS 审中-公开
标题翻译：使用AMPLITUDE MODULATED QUADRATURE SIGNALS的极性调制
公开(公告)号：WO2005062565A1
公开(公告)日：2005-07-07
申请号：PCT/US2004/031841
申请日：2004-09-29
申请人： TELEFONAKTIEBOLAGET L.M. ERICSSON (PUBL) , PEHLKE, David. R. , HADJICHRISTOS, Aristotele
发明人： PEHLKE, David. R. , HADJICHRISTOS, Aristotele
IPC分类号： H04L27/36
CPC分类号： H04L27/362 , H04L27/361
摘要： Polar modulators include a phase splitter, a controller, variable current sources, transistor circuits, and a combiner. The phase splitter splits a RF carrier signal into quadrature component signals that are 90 degrees out of phase with each other. The controller generates modulation control signals based on information that is to be transmitted. The variable current sources each generate a variable amplitude current signal based on a different one of the modulation control signals. Each of the transistor circuits amplify a different one of the quadrature component signals with a variable amplification based on the variable amplitude current signal from a different one of the variable current sources to generate an amplitude adjusted quadrature component signal. The combiner combines the amplitude adjusted quadrature component signals from each of the transistor circuits to generate a phase-modulated RF carrier output signal.
摘要翻译：极性调制器包括分相器，控制器，可变电流源，晶体管电路和组合器。相位分离器将RF载波信号分离成彼此相差90度的正交分量信号。控制器根据要发送的信息产生调制控制信号。可变电流源各自基于不同的调制控制信号产生可变幅度电流信号。每个晶体管电路基于来自不同的可变电流源的可变幅度电流信号，用可变放大放大不同的正交分量信号，以产生振幅调整的正交分量信号。组合器组合来自每个晶体管电路的幅度调整的正交分量信号以产生相位调制的RF载波输出信号。

8. 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。

9. 发明申请

WO2010148407A2 POWER AND IMPEDANCE MEASUREMENT CIRCUITS FOR A WIRELESS COMMUNICATION DEVICE 审中-公开
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：WO2010148407A2
公开(公告)日：2010-12-23
申请号：PCT/US2010/039376
申请日：2010-06-21
申请人： QUALCOMM INCORPORATED , SEE, Puay Hoe , BALLANTYNE, Gary John , SAHOTA, Gurkanwal Singh , HADJICHRISTOS, Aristotele , CICALINI, Alberto
发明人： SEE, Puay Hoe , BALLANTYNE, Gary John , SAHOTA, Gurkanwal Singh , HADJICHRISTOS, Aristotele , CICALINI, Alberto
IPC分类号： H04B1/04
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。

10. 发明申请

WO2013025953A1 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：WO2013025953A1
公开(公告)日：2013-02-21
申请号：PCT/US2012/051237
申请日：2012-08-16
申请人： QUALCOMM INCORPORATED , HADJICHRISTOS, Aristotele , SAHOTA, Gurkanwal Singh
发明人： HADJICHRISTOS, Aristotele , SAHOTA, Gurkanwal Singh
IPC分类号： H04B1/00 , H04B1/40 , H03F3/45
CPC分类号： H04B1/0057 , H03F1/0277 , H03F1/223 , H03F1/56 , H03F3/211 , H03F3/45179 , H03F3/68 , H03F3/72 , H03F2200/222 , H03F2200/294 , H03F2200/429 , H03F2203/7203 , H03F2203/7236 , H04B1/406
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，可以经由用于该LNA的相应控制信号来启用或禁用多个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。

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