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1. 发明申请

WO2011140145A2 NOISE-CANCELING FOR DIFFERENTIAL AMPLIFIERS REQUIRING NO EXTERNAL MATCHING 审中-公开
标题翻译：噪声消除不需外部匹配的差分放大器
公开(公告)号：WO2011140145A2
公开(公告)日：2011-11-10
申请号：PCT/US2011/035067
申请日：2011-05-03
申请人： QUALCOMM INCORPORATED , BEHERA, Manas , MUTHALI, Harish S. , BARNETT, Kenneth Charles
发明人： BEHERA, Manas , MUTHALI, Harish S. , BARNETT, Kenneth Charles
IPC分类号： H03F3/189 , H03F3/30
CPC分类号： H03F3/3081 , H03F3/189
摘要： A differential Low Noise Amplifier (LNA) includes a first stage of resistive feedback amplifiers and second stage of complementary amplifiers, where the outputs of the first stage are coupled to the inputs of the second stage in a cross-coupled fashion. An inductive load, such as a transformer, combines signals output from the complementary amplifiers of the second stage. In one example, the LNA has an input impedance of less than 75 ohms, a noise factor of less than 2 dB, and a gain of more than 20 dB. Due to the low input impedance, the LNA is usable to amplify a signal received from a source having a similar low impedance without the use of an impedance matching network between the output of the source and the input of the LNA.
摘要翻译：差分低噪声放大器（LNA）包括第一级电阻反馈放大器和第二级互补放大器，其中第一级的输出以交叉耦合的方式耦合到第二级的输入。诸如变压器的感性负载组合从第二级的互补放大器输出的信号。在一个示例中，LNA的输入阻抗小于75欧姆，噪声系数小于2dB，增益大于20dB。由于低输入阻抗，LNA可用于放大从具有相似低阻抗的源接收的信号，而不需要在源的输出和LNA的输入之间使用阻抗匹配网络。

2. 发明申请

WO2012009477A1 METHODS AND APPARATUS FOR PROVIDING A BUILT-IN SELF TEST 审中-公开
标题翻译：提供自建自检的方法和设备
公开(公告)号：WO2012009477A1
公开(公告)日：2012-01-19
申请号：PCT/US2011/043915
申请日：2011-07-13
申请人： QUALCOMM INCORPORATED , BANERJEE, Gaurab , BEHERA, Manas , BARNETT, Kenneth Charles
发明人： BANERJEE, Gaurab , BEHERA, Manas , BARNETT, Kenneth Charles
IPC分类号： G06F11/27 , G01R31/3187
CPC分类号： G01R31/3187 , G06F11/27
摘要： A built-in self test (BiST) system is described. The BiST system includes a circuit-under-test. The BiST system also includes one or more embedded sensors. Each of the embedded sensors includes one or more switches connected to one or more nodes within the circuit-under-test. The BiST system further includes a signal generator. The BiST system also includes a bus interface. The bus interface provides for external access of the BiST system.
摘要翻译：描述了内置的自检（BiST）系统。 BiST系统包括一个电路不足测试。 BiST系统还包括一个或多个嵌入式传感器。每个嵌入式传感器包括连接到被测电路中的一个或多个节点的一个或多个开关。 BiST系统还包括信号发生器。 BiST系统还包括总线接口。总线接口提供BiST系统的外部访问。

3. 发明申请

WO2008103757A1 AMPLIFIER WITH INTEGRATED FILTER 审中-公开
标题翻译：具有集成滤波器的放大器
公开(公告)号：WO2008103757A1
公开(公告)日：2008-08-28
申请号：PCT/US2008/054463
申请日：2008-02-20
申请人： QUALCOMM Incorporated , KIM, Tae Wook , KLEMENS, Guy , BARNETT, Kenneth Charles , SENGUPTA, Susanta , SAHOTA, Gurkanwal Singh
发明人： KIM, Tae Wook , KLEMENS, Guy , BARNETT, Kenneth Charles , SENGUPTA, Susanta , SAHOTA, Gurkanwal Singh
IPC分类号： H03F1/22 , H03F3/45 , H03F3/195 , H03F3/72 , H03G3/20 , H03G3/30 , H03H7/01 , H03H7/09
CPC分类号： H03F1/223 , H03F3/195 , H03F3/45188 , H03F3/45475 , H03F3/72 , H03F2200/168 , H03F2200/294 , H03F2200/451 , H03F2203/45034 , H03F2203/45058 , H03F2203/45138 , H03F2203/45296 , H03F2203/45301 , H03F2203/45316 , H03F2203/45396 , H03F2203/7239 , H03G1/0017 , H03G1/0029 , H03G1/0088 , H03G3/3052 , H03G3/3078
摘要： An amplifier with integrated filter (e.g., an LNA) is described. In one design, the amplifier may include a gain stage (330), a filter stage (340), and a buffer stage (350). The gain stage (330) may provide signal amplification for an input signal (Vin). The filter stage (340) may provide filtering for the input signal. The buffer stage (350) may buffer a filtered signal from the filter stage (340). The amplifier may further include a second filter stage (360) and a second buffer stage (370). The second filter stage (360) may provide additional filtering for the input signal. The second buffer stage (370) may buffer a second filtered signal from the second filter stage. All of the stages may be stacked and coupled between a supply voltage and circuit ground. The filter stage (s) may implement an elliptical lowpass filter. Each filter stage may include an inductor and a capacitor coupled in parallel and forming a resonator tank to attenuate interfering signals.
摘要翻译：描述了具有集成滤波器（例如，LNA）的放大器。在一种设计中，放大器可以包括增益级（330），滤波级（340）和缓冲级（350）。增益级（330）可以为输入信号（Vin）提供信号放大。滤波器级（340）可以为输入信号提供滤波。缓冲级（350）可以缓冲来自滤波级（340）的滤波信号。放大器还可以包括第二滤波器级（360）和第二缓冲级（370）。第二滤波器级（360）可以为输入信号提供额外的滤波。第二缓冲级（370）可以缓冲来自第二滤波级的第二滤波信号。所有级可以堆叠并耦合在电源电压和电路接地之间。滤波器级可以实现椭圆形低通滤波器。每个滤波器级可以包括并联耦合的电感器和电容器，并形成谐振器箱以衰减干扰信号。

4. 发明申请

WO2006069321A2 TRANSMIT POWER REDUCTION FOR A WIRELESS DEVICE WITH MULTIPLE TRANSMIT SIGNAL PATHS 审中-公开
标题翻译：用于具有多个发送信号线的无线设备的发射功率降低
公开(公告)号：WO2006069321A2
公开(公告)日：2006-06-29
申请号：PCT/US2005/046807
申请日：2005-12-21
申请人： QUALCOMM INCORPORATED , BARNETT, Kenneth Charles , PERSICO, Charles J. , PETERZELL, Paul
发明人： BARNETT, Kenneth Charles , PERSICO, Charles J. , PETERZELL, Paul
IPC分类号： H04B7/06 , H04B7/005
CPC分类号： H04B7/0691 , H04B7/0404 , H04B7/0608 , H04B7/0619 , H04B7/10 , H04W52/221 , H04W52/42
摘要： A wireless device is equipped with multiple (e.g., two) antennas, which may be of different designs. Each antenna interacts with the wireless environment in a different manner and achieves different scattering effect. The wireless device has one transmit signal path for each antenna. Each transmit signal path generates an RF output signal for transmission from the associated antenna. The wireless device controls the operation of one or more transmit signal paths to achieve a larger received signal level at a receiving base station. The wireless device may (1) autonomously adjust the transmit signal path(s) without relying on any feedback from the base station or (2) adjust the transmit signal path(s) based on transmit power control (TPC) commands received from the base station. The wireless device may selectively enable and disable each transmit signal path, vary the phase and/or gain of each transmit signal path, and so on.
摘要翻译：无线设备配备有可以具有不同设计的多个（例如，两个）天线。每个天线以不同的方式与无线环境进行互动，并实现不同的散射效果。无线设备对于每个天线具有一个发射信号路径。每个发射信号路径产生用于从相关天线发射的RF输出信号。无线设备控制一个或多个发射信号路径的操作以在接收基站实现更大的接收信号电平。无线设备可以（1）自主地调整发送信号路径，而不依赖于来自基站的任何反馈，或（2）基于从基站接收的发送功率控制（TPC）命令来调整发送信号路径站。无线设备可以选择性地启用和禁用每个发射信号路径，改变每个发射信号路径的相位和/或增益等等。

5. 发明申请

WO2009046150A1 BANDGAP REFERENCE CIRCUIT WITH REDUCED POWER CONSUMPTION 审中-公开
标题翻译：具有降低功耗的带宽参考电路
公开(公告)号：WO2009046150A1
公开(公告)日：2009-04-09
申请号：PCT/US2008/078509
申请日：2008-10-01
申请人： QUALCOMM Incorporated , SENGUPTA, Sasanta , BARNETT, Kenneth Charles , FENG, Yunfei
发明人： SENGUPTA, Sasanta , BARNETT, Kenneth Charles , FENG, Yunfei
IPC分类号： G05F3/30
CPC分类号： G05F3/30
摘要： A bandgap voltage reference circuit and methods for generating a bandgap reference voltage are disclosed. An operational amplifier receives first and second input voltages from a first and second current path, respectively. A buffer stage is coupled to an output of the operational amplifier and generates third and fourth voltages on the first and second path. A temperature dependent current is generated using the third and fourth voltages in combination with a first diode, second diode and a resistor. A third current path mirrors the temperature dependent current and a temperature independent voltage is generated for the bandgap reference voltage in the third current path using the temperature dependent current in combination with a second resistor and related diode.
摘要翻译：公开了一种带隙电压参考电路和用于产生带隙基准电压的方法。运算放大器分别从第一和第二电流路径接收第一和第二输入电压。缓冲级耦合到运算放大器的输出，并在第一和第二路径上产生第三和第四电压。使用与第一二极管，第二二极管和电阻器组合的第三和第四电压产生与温度相关的电流。第三电流通路反映温度相关电流，并且使用与第二电阻器和相关二极管组合的温度相关电流，在第三电流通路中为带隙参考电压产生与温度无关的电压。

6. 发明申请

WO2008124347A1 DIFFERENTIAL AMPLIFIER WITH ACTIVE POST-DISTORTION LINEARIZATION 审中-公开
标题翻译：具有主动后失真线性化的差分放大器
公开(公告)号：WO2008124347A1
公开(公告)日：2008-10-16
申请号：PCT/US2008/058710
申请日：2008-03-28
申请人： QUALCOMM INCORPORATED , KIM, Namsoo , BARNETT, Kenneth Charles , APARIN, Vladimir
发明人： KIM, Namsoo , BARNETT, Kenneth Charles , APARIN, Vladimir
IPC分类号： H03F1/32 , H03F1/22 , H03F1/26 , H03F3/45 , H03G1/00
CPC分类号： H03F1/3211 , H03F1/22 , H03F1/223 , H03F1/26 , H03F1/3205 , H03F1/3276 , H03F3/45188 , H03F2200/294 , H03F2200/372 , H03F2200/456 , H03F2200/489 , H03F2200/492 , H03F2203/45296 , H03F2203/45311 , H03F2203/45352 , H03F2203/45386 , H03F2203/45481 , H04B1/525
摘要： A differential amplifier, (300) which has good linearity and noise performance, includes a first side that includes first(310), second, (320) third(330), and fourth(340) transistors and an inductor (350). The first(310) and second(320) transistors are coupled as a first cascode pair, and the third (330) and fourth (340) transistors are coupled as a second cascode pair. The third transistor (330) has its gate coupled to the source of the second transistor (320), and the fourth transistor (340)has its drain coupled to the drain of the second transistor (320). The first transistor (310) provides signal amplification. The second transistor (320) provides load isolation and generates an intermediate signal for the third transistor (330). The third transistor (330) generates distortion components used to cancel third order distortion component generated by the first transistor (310). The inductor (350) provides source degeneration for the first transistor (310) and improves distortion cancellation. The sizes of the second (320) and third (330) transistors are selected to reduce gain loss and achieve good linearity for the amplifier. The differential amplifier also may include a second side that functions similarly to the first side.
摘要翻译：具有良好线性度和噪声性能的差分放大器（300）包括第一侧，其包括第一（310），第二，（320）第三（330）和第四（340）晶体管和电感器（350）。第一（310）和第二（320）晶体管作为第一共源共栅对耦合，并且第三（330）和第四（340）晶体管作为第二共源共栅对耦合。第三晶体管（330）的栅极耦合到第二晶体管（320）的源极，并且第四晶体管（340）的漏极耦合到第二晶体管（320）的漏极。第一晶体管（310）提供信号放大。第二晶体管（320）提供负载隔离并产生用于第三晶体管（330）的中间信号。第三晶体管（330）产生用于消除由第一晶体管（310）产生的三阶失真分量的失真分量。电感器（350）为第一晶体管（310）提供源极退化并改善失真消除。选择第二（320）和第三（330）晶体管的尺寸以减小增益损耗并且实现放大器的良好线性度。差分放大器还可以包括与第一侧类似地起作用的第二侧。

7. 发明申请

WO2010151891A3 PREDETERMINED DUTY CYCLE SIGNAL GENERATOR 审中-公开
公开(公告)号：WO2010151891A3
公开(公告)日：2010-12-29
申请号：PCT/US2010/040249
申请日：2010-06-28
申请人： QUALCOMM INCORPORATED , ZHANG, Kun , BARNETT, Kenneth Charles
发明人： ZHANG, Kun , BARNETT, Kenneth Charles
IPC分类号： H03K5/156 , H03K3/015 , H03K3/017 , H03K7/06 , H03K7/08 , H03K23/00
摘要： Techniques for generating a signal having a predetermined duty cycle. In an exemplary embodiment, a first counter is configured to count a first number of cycles of an oscillator signal, and a second counter is configured to count a second number of cycles of the oscillator signal, with the second number being greater than the first number. The output of the second counter is used to reset the first and second counters, while the outputs of the first and second counters further drive a toggle latch for generating the signal having predetermined duty cycle. Further aspects include techniques for accommodating odd and even values for the second number.

8. 发明申请

WO2008112789A2 ACTIVE CIRCUITS WITH ISOLATION SWITCHES 审中-公开
标题翻译：带有隔离开关的有源电路
公开(公告)号：WO2008112789A2
公开(公告)日：2008-09-18
申请号：PCT/US2008/056696
申请日：2008-03-12
申请人： QUALCOMM INCORPORATED , KIM, Tae Wook , BARNETT, Kenneth Charles , MUTHALI, Harish
发明人： KIM, Tae Wook , BARNETT, Kenneth Charles , MUTHALI, Harish
IPC分类号： H03F3/72 , H03F3/68
CPC分类号： H03F3/72 , H03F1/342 , H03F3/211 , H03F3/45475 , H03F3/68 , H03F2203/21142 , H03F2203/45731
摘要： Active circuits with isolation switches are described. In one design, an apparatus includes first and second amplifiers coupled in parallel. Each amplifier receives an input signal and provides an output signal. Each amplifier has a switch that isolates the amplifier when the amplifier is turned off. The first and second amplifiers may be high and low gain amplifiers or two low noise amplifiers (LNAs). The first and second amplifiers may be for different communication systems, different frequency bands, and/or different gain ranges. In general, any number of amplifiers may be coupled in parallel, and each amplifier may have a switch to isolate that amplifier when turned off. A switch for an amplifier may be a shunt switch coupled between an internal node of the amplifier and ground. The shunt switch may be closed when the amplifier is turned off and may be opened when the amplifier is turned on.
摘要翻译：描述了具有隔离开关的有源电路。在一种设计中，装置包括并联耦合的第一和第二放大器。每个放大器接收一个输入信号并提供一个输出信号。每个放大器都有一个开关，用于在放大器关闭时隔离放大器。第一和第二放大器可以是高和低增益放大器或两个低噪声放大器（LNA）。第一和第二放大器可以用于不同的通信系统，不同的频带和/或不同的增益范围。通常，任何数量的放大器可以并联耦合，并且每个放大器在关闭时可以具有开关以隔离该放大器。放大器的开关可以是耦合在放大器的内部节点与地之间的分路开关。当放大器关闭时，分流开关可能会闭合，放大器开启时可能会打开分流开关。

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