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1. 发明申请

WO2009129330A1 METHOD AND APPARATUS FOR PROCESSING A COMMUNICATION SIGNAL IN A RECEIVER 审中-公开
标题翻译：在接收机中处理通信信号的方法和装置
公开(公告)号：WO2009129330A1
公开(公告)日：2009-10-22
申请号：PCT/US2009/040701
申请日：2009-04-15
申请人： QUALCOMM INCORPORATED , GUDEM, Prasad, S. , CABANILLAS, Jose , CHANG, Li-Chung , LIU, Li
发明人： GUDEM, Prasad, S. , CABANILLAS, Jose , CHANG, Li-Chung , LIU, Li
IPC分类号： H04B1/10
CPC分类号： H04B1/109 , H03F1/3205 , H03F1/3211 , H03F3/193 , H03F3/245
摘要： A receiver includes a jammer detector configured to detect the presence or the absence of jamming in a communication signal within a gain state. The receiver further includes an amplifier configured to amplify the communication signal in a high linearity receiving mode or a low linearity receiving mode, wherein the high linearity receiving mode corresponds with a lower gain for the gain state in the amplifier relative to that of the low linearity receiving mode. In addition, the receiver includes a processing unit coupled to the jammer detector, the processing unit being configured to control the amplifier to amplify the communication signal in either the high linearity receiving mode or the low linearity receiving mode, based on the output of the jammer detector detecting the presence or the absence of jamming in the communication signal. A method is also provided for processing a communication signal in a receiver.
摘要翻译：接收机包括干扰检测器，其被配置为检测在增益状态内的通信信号中存在或不存在干扰。接收器还包括放大器，被配置为以高线性度接收模式或低线性度接收模式放大通信信号，其中高线性度接收模式对应于放大器相对于低线性度的增益状态的较低增益接收模式。此外，接收机包括耦合到干扰检测器的处理单元，该处理单元被配置为基于干扰信号的输出来控制放大器以高线性接收模式或低线性接收模式放大通信信号检测器检测通信信号中是否存在干扰。还提供了一种用于处理接收机中的通信信号的方法。

2. 发明申请

WO2010022093A1 HIGH-LINEARITY LOW-NOISE RECEIVER WITH LOAD SWITCHING 审中-公开
标题翻译：具有负载开关的高线性低噪声接收器
公开(公告)号：WO2010022093A1
公开(公告)日：2010-02-25
申请号：PCT/US2009/054214
申请日：2009-08-18
申请人： QUALCOMM INCORPORATED , LIU, Li , GUDEM, Prasad, S.
发明人： LIU, Li , GUDEM, Prasad, S.
IPC分类号： H03F1/56 , H03F3/45
CPC分类号： H03F1/32 , H03F1/0277 , H03F1/223 , H03F1/56 , H03F3/45188 , H03F3/72 , H03F2200/294 , H03F2200/336 , H03F2203/45386 , H03F2203/45394 , H03F2203/45726 , H03F2203/7206 , H03F2203/7236 , H04B1/109 , H04B1/18
摘要： A receiver includes a low noise amplifier (LNA) and multiple pairs of mixers. The LNA receives and amplifies an LNA input signal and provides at least one LNA output signal. Each pair of mixers downconverts one of the at least one LNA output signal when enabled. Each pair of mixers may be selectively enabled or disabled, e.g., based on a mode selected from among multiple modes. In one design, the LNA includes multiple load sections coupled in parallel. Each load section may be selectively enabled or disabled, e.g., based on the selected mode. In one design, first and second pairs of mixers and first and second load sections may be enabled for a high linearity mode. The first pair of mixers and the first load section may be enabled and the second pair of mixers and the second load section may be disabled for a low linearity mode.
摘要翻译：接收机包括低噪声放大器（LNA）和多对混频器。 LNA接收并放大LNA输入信号并提供至少一个LNA输出信号。当使能时，每对混频器降低至少一个LNA输出信号之一。可以例如基于从多个模式中选择的模式来选择性地启用或禁用每对混频器。在一种设计中，LNA包括并联耦合的多个负载部分。可以例如基于所选择的模式来选择性地启用或禁用每个加载部分。在一种设计中，第一和第二对混频器以及第一和第二负载部分可以被启用用于高线性模式。可以启用第一对混频器和第一负载部分，并且可以对低线性模式禁用第二对混频器和第二负载部分。

3. 发明申请

WO2009097353A1 METHOD AND APPARATUS FOR REDUCING INTERMODULATION DISTORTION IN AN ELECTRONIC DEVICE HAVING AN AMPLIFIER CIRCUIT 审中-公开
标题翻译：用于减小具有放大器电路的电子设备中的互调失真的方法和装置
公开(公告)号：WO2009097353A1
公开(公告)日：2009-08-06
申请号：PCT/US2009/032272
申请日：2009-01-28
申请人： QUALCOMM INCORPORATED , DENG, Junxiong , LIU, Li , GUDEM, Prasad, S.
发明人： DENG, Junxiong , LIU, Li , GUDEM, Prasad, S.
IPC分类号： H03F3/193 , H03F1/32 , H03F1/34
CPC分类号： H03F3/193 , H03F1/223 , H03F1/3205 , H03F1/34 , H03F2200/294 , H03F2201/3206
摘要： An electronic device includes an amplifier circuit coupled to a linearizer. The amplifier circuit may receive a first input signal including first and second frequencies and generate a first output signal including a delta frequency signal at a delta frequency, which is the difference between the first frequency and the second frequency. The linearizer includes a signal detector circuit, a current-mirror circuit, a low pass filter, a phase shifter, and a bias circuit. The signal detector circuit may generate a second output signal. The current-mirror circuit may adjust an amplitude of a signal. The low pass filter may eliminate a portion of the second output signal having frequencies greater than the delta frequency. The phase shifter may generate a feedback signal corresponding to the delta frequency signal. An amplitude and/or a phase of the feedback signal is different from an amplitude and/or a phase of the delta frequency signal.
摘要翻译：电子设备包括耦合到线性化器的放大器电路。放大器电路可以接收包括第一和第二频率的第一输入信号，并产生第一输出信号，该第一输出信号包括第一频率和第二频率之间的差异的增量频率的增量频率信号。线性化器包括信号检测器电路，电流镜电路，低通滤波器，移相器和偏置电路。信号检测器电路可以产生第二输出信号。电流镜电路可以调节信号的幅度。低通滤波器可以消除具有大于Δ频率的频率的第二输出信号的一部分。移相器可以产生对应于Δ频率信号的反馈信号。反馈信号的振幅和/或相位与增量频率信号的振幅和/或相位不同。

4. 发明申请

WO2009026413A1 ACTIVE CIRCUITS WITH LOAD LINEARIZATION 审中-公开
标题翻译：具有负载线性化的有源电路
公开(公告)号：WO2009026413A1
公开(公告)日：2009-02-26
申请号：PCT/US2008/073812
申请日：2008-08-21
申请人： QUALCOMM Incorporated , LIU, Li , GUDEM, Prasad S.
发明人： LIU, Li , GUDEM, Prasad S.
IPC分类号： H03F1/26 , H03F1/32 , H04B1/10 , H04B1/52
CPC分类号： H04B1/109 , H03F1/223 , H03F1/3205 , H03F1/3211 , H03F3/45179 , H03F3/45188 , H03F2200/453 , H03F2203/45306 , H03F2203/45352 , H03F2203/45386 , H03F2203/45394 , H04B1/525
摘要： Active circuits with active loads linearized via distortion cancellation are described. In one design, an apparatus includes a first stage and a load stage. For an amplifier, the first stage amplifies an input signal and provides an output signal having a larger signal level. For a mixer, the first stage mixes an input signal with an LO signal and provides an output signal. The load stage provides an active load for the first stage and is linearized by canceling distortion generated by the active load. In one design, the load stage includes a first transistor that provides the active load and generates distortion due to its nonlinearity. The load stage further includes at least one transistor that generates a replica of the distortion from the first transistor. The distortion replica is used to cancel the distortion from the first transistor. The first stage may also be linearized with distortion cancellation.
摘要翻译：描述了通过失真消除线性化的有源负载的有源电路。在一种设计中，装置包括第一级和负载级。对于放大器，第一级放大输入信号并提供具有较大信号电平的输出信号。对于混频器，第一级将输入信号与LO信号混频并提供输出信号。负载级为第一级提供有效负载，并通过消除由有效负载产生的失真来线性化。在一种设计中，负载级包括提供有源负载并由于其非线性而产生失真的第一晶体管。负载级还包括至少一个晶体管，其产生来自第一晶体管的失真的复制品。失真复制品用于消除第一晶体管的失真。第一级也可以通过失真消除线性化。

5. 发明申请

WO2011153076A2 REDUCING POWER CONSUMPTION BY TAKING ADVANTAGE OF SUPERIOR IN-CIRCUIT DUPLEXER PERFORMANCE 审中-公开
标题翻译：通过获得超级电路双工器性能优势降低功耗
公开(公告)号：WO2011153076A2
公开(公告)日：2011-12-08
申请号：PCT/US2011/038241
申请日：2011-05-26
申请人： QUALCOMM INCORPORATED , GUDEM, Prasad S. , LAU, Soon-Seng , LIU, Li
发明人： GUDEM, Prasad S. , LAU, Soon-Seng , LIU, Li
IPC分类号： H04B1/10 , H04B1/16 , H04B1/52
CPC分类号： H04B1/525 , H04B1/109 , H04W52/0238 , Y02D70/1242 , Y02D70/164 , Y02D70/40
摘要： Although the duplexer in a full-duplex transceiver circuit may only be guaranteed by the duplexer manufacturer to have a transmit band rejection from its TX port to its RX port of a certain amount, and may only be guaranteed to have a receive band rejection of another amount, the actual transmit band rejection and the actual receive band rejection of a particular instance of the duplexer may be better than specified. Rather than consuming excess power in the receiver and/or transmitter in order to meet performance requirements assuming the duplexer only performs as well as specified, the duplexer's in-circuit performance is measured as part of a transmitter-to-receiver isolation determination. Transmitter and/or receiver power settings are reduced where possible to take advantage of the measured better-than-specified in-circuit duplexer performance, while still meeting transceiver performance requirements. Power settings are not changed during normal transmit and receive mode operation.
摘要翻译：虽然全双工收发器电路中的双工器可能只能由双工器制造商保证从其TX端口到其一定数量的RX端口的发射波段抑制，并且只能保证具有另一个的接收频带抑制数量，双工器的特定实例的实际发射频带抑制和实际接收频带抑制可能优于指定的。假设双工器仅执行指定，而不是在接收机和/或发射机中消耗多余的功率，以满足性能要求，则双工器的在线性能是作为发射机到接收机隔离确定的一部分进行测量的。发射机和/或接收机功率设置在可能的情况下可以减少，以便在仍然满足收发器性能要求的同时利用测得的优于指定的在线双工器性能。在正常的发送和接收模式操作期间，电源设置不会改变。

6. 发明申请

WO2012048034A2 WIDEBAND TEMPERATURE COMPENSATED RESONATOR AND WIDEBAND VCO 审中-公开
标题翻译：宽带温度补偿谐振器和宽带VCO
公开(公告)号：WO2012048034A2
公开(公告)日：2012-04-12
申请号：PCT/US2011/054971
申请日：2011-10-05
申请人： QUALCOMM INCORPORATED , LIU, Li , NARATHONG, Chiewcharn
发明人： LIU, Li , NARATHONG, Chiewcharn
IPC分类号： H03B5/12 , H03L1/02
CPC分类号： H03L1/025 , H03B5/04 , H03B5/1212 , H03B5/1228 , H03B5/1243 , H03B5/1265 , H03L1/023 , H03L7/099 , H03L7/104 , H03L7/1976
摘要： A resonator of a VCO includes a fine tuning main varactor circuit, an auxiliary varactor circuit, and a coarse tuning capacitor bank circuit coupled in parallel with an inductance. The main varactor circuit includes a plurality of circuit portions that can be separately disabled. Within each circuit portion is a multiplexing circuit that supplies a selectable one of either a fine tuning control signal (FTAVCS) or a temperature compensation control signal (TCAVCS) onto a varactor control node within the circuit portion. If the circuit portion is enabled then the FTAVCS is supplied onto the control node so that the circuit portion is used for fine tuning. If the circuit portion is disabled then the TCAVCS is supplied onto the control node so that the circuit portion is used to combat VCO frequency drift as a function of temperature. How the voltage of the TCAVCS varies with temperature is digitally programmable.
摘要翻译： VCO的谐振器包括与电感并联耦合的微调主变容管电路，辅助变容管电路和粗调电容器组电路。主变容管电路包括可以单独禁用的多个电路部分。在每个电路部分内的是一个多路复用电路，该电路把微调控制信号（FTAVCS）或温度补偿控制信号（TCAVCS）中的可选一个提供到电路部分内的变容二极管控制节点上。如果电路部分被启用，则将FTAVCS提供给控制节点，使得电路部分用于微调。如果电路部分被禁止，则TCAVCS被提供到控制节点上，使得电路部分被用于对抗作为温度的函数的VCO频率漂移。 TCAVCS的电压如何随温度变化而变化，是数字可编程的。

7. 发明申请

WO2012092385A1 WIDEBAND MULTI-MODE VCO 审中-公开
标题翻译：宽带多模VCO
公开(公告)号：WO2012092385A1
公开(公告)日：2012-07-05
申请号：PCT/US2011/067620
申请日：2011-12-28
申请人： QUALCOMM INCORPORATED , LI, Guansheng , LIU, Li , TANG, Yiwu
发明人： LI, Guansheng , LIU, Li , TANG, Yiwu
IPC分类号： H03B5/12
CPC分类号： H03B5/1228 , H03B5/1212 , H03B5/1225 , H03B5/1256 , H03B5/1262 , H03B5/1281 , H03B5/1296
摘要： A VCO includes a transformer-based resonator that has a first LC tank and a second LC tank. The resonator has an even resonant mode and an odd resonant mode. The VCO further includes an active transconductance network that is coupled to a two-terminal port of the first tank and is also coupled to a two-terminal port of the second tank. A first terminal of the port of the first tank is capacitively coupled to a first terminal of the port of the second tank. A second terminal of the port of the first tank is capacitively coupled to a second terminal of the port of the second tank. The active transconductance network causes the resonator to resonate in a selectable one of the even and odd resonant modes depending on a digital control signal. The VCO is fine tuned by changing the capacitances of capacitors of the tanks.
摘要翻译： VCO包括具有第一LC箱和第二LC箱的基于变压器的谐振器。谐振器具有均匀谐振模式和奇数谐振模式。 VCO还包括有源跨导网络，其耦合到第一箱的两端口并且还耦合到第二箱的两端口。第一罐的端口的第一端子电容耦合到第二罐的端口的第一端子。第一罐的端口的第二端子电容耦合到第二罐的端口的第二端子。有源跨导网络使得谐振器根据数字控制信号以奇数谐振模式和奇数谐振模式中的可选择谐振模式谐振。通过改变电容器的电容，可以对VCO进行微调。

8. 发明申请

WO2009046349A1 CONFIGURABLE FEEDBACK FOR AN AMPLIFIER 审中-公开
标题翻译：用于放大器的可配置反馈
公开(公告)号：WO2009046349A1
公开(公告)日：2009-04-09
申请号：PCT/US2008/078819
申请日：2008-10-03
申请人： QUALCOMM Incorporated , RANJAN, Mahim , LIU, Li
发明人： RANJAN, Mahim , LIU, Li
IPC分类号： H03F1/34 , H03F1/26 , H03F1/32 , H04B1/10
CPC分类号： H03F1/342 , H03F1/26 , H03F1/3205 , H03F2200/156 , H03F2200/294 , H03F2200/372 , H03F2200/393 , H03F2200/78 , H03F2200/99 , H03G1/0029 , H03G1/0088 , H03G3/3052 , H04B1/109
摘要： An amplifier (M1) is disclosed that includes configurable negative feedback (203) based on the output of a received signal strength indicator (201). The feedback may be increased for high received signal levels, and decreased for low received signal levels. In an embodiment, the configurable feedback (203) may comprise a plurality of discrete impedance settings. Amplitude and/or time hysteresis may be incorporated.
摘要翻译：公开了一种放大器（M1），其包括基于接收信号强度指示器（201）的输出的可配置负反馈（203）。对于高接收信号电平，可以增加反馈，并且对于低接收信号电平可以减小反馈。在一个实施例中，可配置反馈（203）可以包括多个离散阻抗设置。可以并入幅度和/或时间滞后。

9. 发明申请

WO2012048036A2 RECONFIGURABLE LOCAL OSCILLATOR FOR OPTIMAL NOISE PERFORMANCE IN A MULTI-STANDARD TRANSCEIVER 审中-公开
标题翻译：可重构的局部振荡器，用于多标准收发器中的最佳噪声性能
公开(公告)号：WO2012048036A2
公开(公告)日：2012-04-12
申请号：PCT/US2011/054974
申请日：2011-10-05
申请人： QUALCOMM INCORPORATED , LIU, Li , NARATHONG, Chiewcharn , GUDEM, Prasad Srinivasa Siva
发明人： LIU, Li , NARATHONG, Chiewcharn , GUDEM, Prasad Srinivasa Siva
IPC分类号： H03D3/24 , H03L7/093 , H04B1/40 , H04B1/00 , H04W88/06
CPC分类号： H03L7/1976 , H03B5/1212 , H03B5/1228 , H03B5/1243 , H03L7/093 , H03L7/099 , H03L7/104 , H04B1/0057
摘要： A transceiver for multi-standard operation (usable, for example, to communicate signals both of a first wireless communication standard and of a second wireless communication standard) has a mixer that receives a local oscillator signal generated by a local oscillator. A PLL of the local oscillator involves a VCO, a digitally programmable analog loop filter, a digitally programmable VCO supply voltage circuit, and a digitally programmable VCO varactor bias control circuit. In one aspect, the bandwidth of the analog loop filter is adjusted depending on the communication standard of the signal being communicated. In other aspects, the VCO supply voltage circuit and/or the varactor bias control circuit are configured in different ways to optimize PLL performance depending on the communication standard of the signal being communicated.
摘要翻译：用于多标准操作的收发器（可用于例如传送第一无线通信标准和第二无线通信标准两者的信号）具有混频器，该混频器接收由本地振荡器。本地振荡器的PLL涉及VCO，数字可编程模拟环路滤波器，数字可编程VCO电源电压电路和数字可编程VCO变容二极管偏置控制电路。在一个方面中，模拟环路滤波器的带宽根据所传送信号的通信标准进行调整。在其他方面，VCO电源电压电路和/或变容二极管偏置控制电路以不同方式配置，以根据所传送信号的通信标准来优化PLL性能。

10. 发明申请

WO2010068503A1 DUTY CYCLE ADJUSTMENT FOR A LOCAL OSCILLATOR SIGNAL 审中-公开
标题翻译：用于本地振荡器信号的占空比调整
公开(公告)号：WO2010068503A1
公开(公告)日：2010-06-17
申请号：PCT/US2009/065961
申请日：2009-11-25
申请人： QUALCOMM Incorporated , PANIKKATH, Vinod, V. , LIU, Li
发明人： PANIKKATH, Vinod, V. , LIU, Li
IPC分类号： H03L7/08
CPC分类号： H03K5/1565 , H03K3/017 , H03L7/08
摘要： A local oscillator (LO) module comprises a local oscillator and a feedback circuit. The local oscillator, biased at a supply voltage, generates a local oscillator signal having a duty cycle. The feedback circuit makes an absolute adjustment of the duty cycle of the local oscillator signal in response to a difference between a first voltage signal, representing a voltage level of the local oscillator signal, and a second voltage signal, representing a voltage level of a portion of the supply voltage corresponding to a desired duty cycle for the local oscillator signal.
摘要翻译：本地振荡器（LO）模块包括本地振荡器和反馈电路。以电源电压偏置的本地振荡器产生具有占空比的本地振荡器信号。响应于表示本地振荡器信号的电压电平的第一电压信号和表示本地振荡器信号的电压电平的第二电压信号之间的差异，反馈电路对本地振荡器信号的占空比进行绝对调整，的电源电压对应于本地振荡器信号的期望占空比。

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