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1. 发明申请

WO2011022553A1 PROTECTION CIRCUIT FOR POWER AMPLIFIER 审中-公开
标题翻译：功率放大器保护电路
公开(公告)号：WO2011022553A1
公开(公告)日：2011-02-24
申请号：PCT/US2010/046025
申请日：2010-08-19
申请人： QUALCOMM INCORPORATED , SU, Wenjun , HADJICHRISTOS, Aristotele , SAHOTA, Gurkanwal, S. , CASSIA, Marco
发明人： SU, Wenjun , HADJICHRISTOS, Aristotele , SAHOTA, Gurkanwal, S. , CASSIA, Marco
IPC分类号： H03F1/52 , H03F3/24 , H03G3/30 , G01R19/04 , H04W52/08
CPC分类号： H03F1/52 , H03F3/24 , H03F2200/435 , H03F2200/78 , H03G3/3042 , H04B2001/0408
摘要： Techniques for protecting a power amplifier (PA) are described. In an exemplary design, an apparatus includes a PA module (310) to amplify an input RF signal and provide an output RF signal and a protection circuit (320) to control a transmitter gain to protect the PA module against high peak voltage. In an exemplary design, the protection circuit (329) includes a set of comparators (370) to quantize an analog input signal and provide digital comparator output signals used to adjust the transmitter gain. In another exemplary design, the protection circuit reduces and increases the transmitter gain with hysteresis. In yet another exemplary design, the protection circuit has faster response to rising amplitude than falling amplitude of the output RF signal. The hysteresis and/or the different rise and fall responses may allow the protection circuit to avoid toggling the transmitter gain under severe load mismatch and to handle time-varying envelope due to amplitude modulation.
摘要翻译：描述了用于保护功率放大器（PA）的技术。在示例性设计中，装置包括用于放大输入RF信号并提供输出RF信号的PA模块（310）和用于控制发射机增益以保护PA模块免受高峰值电压的保护电路（320）。在示例性设计中，保护电路（329）包括一组比较器（370），用于量化模拟输入信号并提供用于调整发射机增益的数字比较器输出信号。在另一示例性设计中，保护电路通过滞后减小并增加发射机增益。在又一示例性设计中，保护电路比对输出RF信号的下降幅度具有对振幅上升的响应更快。迟滞和/或不同的上升和下降响应可以允许保护电路避免在严重负载不匹配的情况下切换发射机增益，并且由于幅度调制来处理时变包络。

2. 发明申请

WO2011031540A3 HIGH LINEAR FAST PEAK DETECTOR 审中-公开
标题翻译：高线性快速PEAK探测器
公开(公告)号：WO2011031540A3
公开(公告)日：2011-03-17
申请号：PCT/US2010/046915
申请日：2010-08-27
申请人： QUALCOMM Incorporated , SU, Wenjun , HADJICHRISTOS, Aristotele , CASSIA, Marco , NARATHONG, Chiewcharn
发明人： SU, Wenjun , HADJICHRISTOS, Aristotele , CASSIA, Marco , NARATHONG, Chiewcharn
IPC分类号： G01R19/04
摘要： A high linear fast peak detector having a variable bias current and/or a variable bias voltage is described. In an exemplary design, the peak detector includes a transistor, a variable current source, a capacitor, and a feedback circuit. The transistor receives the input signal and provides a source current. The variable current source receives the input signal, provides high bias current when the input signal is low, and provides low bias current when the input signal is high. The capacitor is charged by the source current when the input signal is high and is discharged by the high bias current when the input signal is low. The feedback circuit receives a detected signal from the capacitor and provides higher bias voltage for the transistor when the input signal is high, which results in higher source current from the transistor.
摘要翻译：描述了具有可变偏置电流和/或可变偏置电压的高线性快速峰值检测器。在示例性设计中，峰值检测器包括晶体管，可变电流源，电容器和反馈电路。晶体管接收输入信号并提供源电流。可变电流源接收输入信号，当输入信号为低时提供高偏置电流，并且当输入信号为高时提供低偏置电流。当输入信号为高电平时，电容器由源电流充电，当输入信号为低电平时，电容器由高偏置电流放电。当输入信号为高时，反馈电路接收来自电容器的检测信号并为晶体管提供更高的偏置电压，这导致来自晶体管的更高的源电流。

3. 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。

4. 发明申请

WO2009061838A1 SWITCHABLE-LEVEL VOLTAGE SUPPLIES FOR MULTIMODE COMMUNICATIONS 审中-公开
标题翻译：用于多模通信的可切换电压电源
公开(公告)号：WO2009061838A1
公开(公告)日：2009-05-14
申请号：PCT/US2008/082507
申请日：2008-11-05
申请人： QUALCOMM Incorporated , CASSIA, Marco , HADJICHRISTOS, Aristotele
发明人： CASSIA, Marco , HADJICHRISTOS, Aristotele
IPC分类号： H04B1/04
CPC分类号： H04B1/0475 , H03F1/02 , H03F1/0244 , H03F3/24 , H03F3/45475 , H03F2203/45731 , H04B1/0057 , H04B1/406 , H04B2001/045
摘要： Switchable voltage level supplies for circuitry in a multi-mode communications chipset are disclosed. In an embodiment, a first voltage level is supplied to TX circuitry operating in a first mode having a first set of linearity and/or noise requirements. A second voltage level lower than the first voltage level is supplied to TX circuitry operating in a second mode having a second set of linearity and/or noise requirements looser than the first set of requirements. The first mode may be operation according to the GSM standard, and the second mode may be operation according to the W-CDMA standard.
摘要翻译：公开了一种用于多模式通信芯片组中的电路的可切换电压电平。在一个实施例中，向具有第一组线性和/或噪声要求的第一模式工作的TX电路提供第一电压电平。低于第一电压电平的第二电压电平被提供给具有比第一组要求松动的第二组线性和/或噪声要求的第二模式工作的TX电路。第一模式可以是根据GSM标准的操作，并且第二模式可以是根据W-CDMA标准的操作。

5. 发明申请

WO2009061835A3 METHODS AND APPARATUSES FOR SELECTABLE VOLTAGE SUPPLY 审中-公开
公开(公告)号：WO2009061835A3
公开(公告)日：2009-05-14
申请号：PCT/US2008/082504
申请日：2008-11-05
申请人： QUALCOMM INCORPORATED , CASSIA, Marco , HADJICHRISTOS, Aristotele , DONOVAN, Conor , LEE, Sang-oh
发明人： CASSIA, Marco , HADJICHRISTOS, Aristotele , DONOVAN, Conor , LEE, Sang-oh
IPC分类号： H03K17/693 , H03K17/16 , H03K17/0814
摘要： A circuit which selects a supply voltage from a plurality of voltage supplies is presented. The circuit includes a first transistor (215) configured to select a first voltage supply (240), a second transistor (210) configured to select a second voltage supρly (230), a first parasitic current inhibitor (205) coupled the first transistor, (215) the first voltage supply, (240) and the second voltage supply, (230) where the first parasitic current inhibitor (205) automatically utilizes the voltage supply providing the highest voltage for preventing a substrate current from flowing through a bulk node of the first transistor (215), and a second parasitic current inhibitor (207) coupled the second transistor (210), the first voltage supply (240), and the second voltage supply(230), where the second parasitic current inhibitor (207) automatically utilizes the voltage supply providing the highest voltage for preventing a substrate current from flowing through a bulk node of the second transistor (210).

6. 发明申请

WO2010011977A1 TRANSMISSION NOISE CANCELLATION 审中-公开
标题翻译：传输噪声消除
公开(公告)号：WO2010011977A1
公开(公告)日：2010-01-28
申请号：PCT/US2009/051765
申请日：2009-07-24
申请人： QUALCOMM INCORPORATED , VLADIMIR, Aparin , HADJICHRISTOS, Aristotele , CASSIA, Marco
发明人： VLADIMIR, Aparin , HADJICHRISTOS, Aristotele , CASSIA, Marco
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。

7. 发明申请

WO2011011639A2 LEVEL SHIFTERS AND HIGH VOLTAGE LOGIC CIRCUITS 审中-公开
标题翻译：水平变压器和高压逻辑电路
公开(公告)号：WO2011011639A2
公开(公告)日：2011-01-27
申请号：PCT/US2010/042968
申请日：2010-07-22
申请人： QUALCOMM INCORPORATED , CASSIA, Marco
发明人： CASSIA, Marco
IPC分类号： H03K3/356 , H03K19/0185
CPC分类号： H03K3/35613 , H03K19/018528
摘要： Level shifters and high voltage logic circuits implemented with MOS transistors having a low breakdown voltage relative to the voltage swing of the input and output signals are described. In an exemplary design, a level shifter includes a driver circuit and a latch. The driver circuit receives an input signal having a first voltage range and provides a drive signal having a second voltage range. The first and second voltage ranges may cover positive and negative voltages or different ranges of positive voltages. The latch receives the drive signal and provides an output signal having the second voltage range. The driver circuit may generate a control signal having a full voltage range based on the input signal and may then generate the drive signal based on the control signal. The level shifter may be used to implement a high voltage logic circuit.
摘要翻译：描述了相对于输入和输出信号的电压摆幅具有低击穿电压的MOS晶体管实现的电平移位器和高电压逻辑电路。在示例性设计中，电平移位器包括驱动器电路和锁存器。驱动电路接收具有第一电压范围的输入信号，并提供具有第二电压范围的驱动信号。第一和第二电压范围可以覆盖正电压或负电压或不同的正电压范围。锁存器接收驱动信号并提供具有第二电压范围的输出信号。驱动器电路可以基于输入信号产生具有全电压范围的控制信号，然后可以基于控制信号产生驱动信号。电平移位器可以用于实现高压逻辑电路。

8. 发明申请

WO2011011638A3 HIGH VOLTAGE LOGIC CIRCUITS 审中-公开
公开(公告)号：WO2011011638A3
公开(公告)日：2011-01-27
申请号：PCT/US2010/042967
申请日：2010-07-22
申请人： QUALCOMM INCORPORATED , CASSIA, Marco
发明人： CASSIA, Marco
IPC分类号： H03K19/0175 , H03K19/003 , H03K19/00
摘要： High voltage logic circuits that can handle digital input and output signals having a larger voltage range are described. In an exemplary design, a high voltage logic circuit includes an input stage, a second stage, and an output stage. The input stage receives at least one input signal and provides (i) at least one first intermediate signal having a first voltage range and (ii) at least one second intermediate signal having a second voltage range. The second stage receives and processes the first and second intermediate signals based on a logic function and provides (i) a first drive signal having the first voltage range and (ii) a second drive signal having the second voltage range. The output stage receives the first and second drive signals and provides an output signal having a third voltage range, which may be larger than each of the first and second voltage ranges.

9. 发明申请

WO2010014983A2 METHODS AND APPARATUS FOR IMPLEMENTING PHASE ROTATION AT BASEBAND FREQUENCY FOR TRANSMIT DIVERSITY 审中-公开
标题翻译：用于实施基带频率的发射多径相位旋转的方法和装置
公开(公告)号：WO2010014983A2
公开(公告)日：2010-02-04
申请号：PCT/US2009/052578
申请日：2009-08-03
申请人： QUALCOMM INCORPORATED , TANG, Yiwu , HOLENSTEIN, Christian , CASSIA, Marco , RANJAN, Mahim
发明人： TANG, Yiwu , HOLENSTEIN, Christian , CASSIA, Marco , RANJAN, Mahim
IPC分类号： H04L27/00
CPC分类号： H04B7/0682 , H04L1/0618 , H04L1/08
摘要： An apparatus for implementing phase rotation at baseband frequency for transmit diversity may include a primary transmit signal path and a diversity transmit signal path. Both the primary transmit signal path and the diversity transmit signal path may receive a primary transmit signal. A signal selector within the diversity transmit signal path may perform phase rotation with respect to the primary transmit signal while the primary transmit signal is at a baseband frequency, thereby producing a diversity transmit signal.
摘要翻译：用于实现用于发射分集的基带频率的相位旋转的装置可以包括主发射信号路径和分集发射信号路径。主发射信号路径和分集发射信号路径都可以接收主发射信号。在主发射信号处于基带频率的同时，分集发射信号路径内的信号选择器可以执行相对于主发射信号的相位旋转，从而产生分集发射信号。

10. 发明申请

WO2011072309A1 SEPARATE I AND Q BASEBAND PREDISTORTION IN DIRECT CONVERSION TRANSMITTERS 审中-公开
标题翻译：直接转换发射机中的分离I和Q基带预测
公开(公告)号：WO2011072309A1
公开(公告)日：2011-06-16
申请号：PCT/US2011/021213
申请日：2011-01-13
申请人： QUALCOMM INCORPORATED , VERMA, Sumit , CASSIA, Marco , BANISTER, Brian Clarke
发明人： VERMA, Sumit , CASSIA, Marco , BANISTER, Brian Clarke
IPC分类号： H04L27/36
CPC分类号： H04L27/367
摘要： In-Phase (I) and Quadrature (Q) signals passing from a modem into a direct conversion transmitter are predistorted separately from, and independently of, one another. The I signal is predistorted to compensate for nonlinearities in the baseband I path circuitry between the modem and the upconverter. The Q signal is predistorted to compensate for nonlinearities in the baseband Q path circuitry between the modem and the upconverter. By employing the separate I and Q path baseband predistortion method, 4FMOD power in the upconverted and amplified signal as supplied to the transmitter antenna is reduced or eliminated. In one example, the transmitter employs single sideband modulation in the 777-787 MHz Verizon Band 13 while transmitting 23 dBm in a single LTE RB without emitting more than -57dBm/6.25kHz 4FMOD power into a nearby 763-775 MHz public safety band that starts only two megahertz away from the lower bound of Band 13.
摘要翻译：从调制解调器传送到直接转换发射机的同相（I）和正交（Q）信号彼此独立地进行预失真。 I信号被预失真以补偿调制解调器和上变频器之间的基带I路径电路中的非线性。 Q信号被预失真以补偿调制解调器和上变频器之间的基带Q路径电路中的非线性。通过采用单独的I和Q路径基带预失真方法，降低或消除了提供给发射机天线的上变频和放大信号中的4FMOD功率。在一个示例中，发射机在777-787MHz Verizon Band 13中采用单边带调制，同时在单个LTE RB中传输23 dBm，而不会在附近的763-775 MHz公共安全频段发射超过-57dBm / 6.25kHz的4FMOD功率，距离13号带的下限仅开始两兆。

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