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1. 发明申请

WO2011063360A1 PHASE LOCKED LOOP APPARATUS WITH SELECTABLE CAPACITANCE DEVICE 审中-公开
标题翻译：具有可选择电容器件的相位锁定环路设备
公开(公告)号：WO2011063360A1
公开(公告)日：2011-05-26
申请号：PCT/US2010/057683
申请日：2010-11-22
申请人： QUALCOMM INCORPORATED , YANG, Bo , MUTHALI, Harish, S. , BARNETT, Kenneth, C.
发明人： YANG, Bo , MUTHALI, Harish, S. , BARNETT, Kenneth, C.
IPC分类号： H03L1/02
CPC分类号： H03L1/023 , H03L2207/05 , H03L2207/06
摘要： A phase locked loop apparatus includes an oscillator, a variable capacitance device, a selectable capacitance device, and a capacitance controller that is configured to provide a control signal to the selectable capacitance device. The selectable capacitance device is connected to the oscillator and is responsive to the control signal such that the selectable capacitance device has a first capacitance at a first control signal value and a second capacitance at a second control signal value. The capacitance controller only selects either the first capacitance or the second capacitance by providing a control signal that has the first control signal value to select the first capacitance and having the second control signal value to select the second capacitance.
摘要翻译：锁相环装置包括振荡器，可变电容器件，可选择的电容器件和电容控制器，其被配置为向可选择的电容器件提供控制信号。可选择的电容器件连接到振荡器并且响应于控制信号，使得可选择的电容器件具有第一控制信号值的第一电容和处于第二控制信号值的第二电容。电容控制器仅通过提供具有第一控制信号值的控制信号来选择第一电容或第二电容，以选择第一电容并具有第二控制信号值来选择第二电容。

2. 发明申请

WO2010151889A2 RF SINGLE-ENDED TO DIFFERENTIAL CONVERTER 审中-公开
标题翻译： RF单端到差分转换器
公开(公告)号：WO2010151889A2
公开(公告)日：2010-12-29
申请号：PCT/US2010040246
申请日：2010-06-28
申请人： QUALCOMM INC , SENGUPTA SUSANTA , BARNETT KENNETH C
发明人： SENGUPTA SUSANTA , BARNETT KENNETH C
IPC分类号： H03F1/32 , H03F3/45
CPC分类号： H03F1/3211 , H03F1/3223 , H03F3/45188 , H03F2203/45024 , H03F2203/45166 , H03F2203/45318 , H03F2203/45366
摘要： Techniques for designing a highly differential single-ended-to-differential converter for use in, e.g., communications receivers. In an exemplary embodiment, an auxiliary current path including cascomp transistors is coupled to a main current path including input transistors and cascode transistors. The transistors are biased such that inter-modulation products generated by the auxiliary current path cancel out inter-modulation products generated by the main current path. In another exemplary embodiment, current source transistors for the main current path are adaptively biased depending on the level of the input signal received. In an exemplary embodiment, the techniques may be applied to designing a converter for interfacing a single-ended low-noise amplifier (LNA) output voltage with a differential mixer input in a communications receiver.
摘要翻译：用于设计用于例如通信接收机的高差分单端到差分转换器的技术。在示例性实施例中，包括cascomp晶体管的辅助电流路径耦合到包括输入晶体管和共源共栅晶体管的主电流路径。晶体管被偏置，使得由辅助电流路径产生的互调产物抵消由主电流路径产生的互调产物。在另一个示例性实施例中，用于主电流路径的电流源晶体管根据所接收的输入信号的电平自适应地偏置。在示例性实施例中，这些技术可以应用于设计用于将单端低噪声放大器（LNA）输出电压与通信接收机中的差分混合器输入接口的转换器。

3. 发明申请

WO2010151889A3 RF SINGLE-ENDED TO DIFFERENTIAL CONVERTER 审中-公开
公开(公告)号：WO2010151889A3
公开(公告)日：2010-12-29
申请号：PCT/US2010/040246
申请日：2010-06-28
申请人： QUALCOMM Incorporated , SENGUPTA, Susanta , BARNETT, Kenneth C.
发明人： SENGUPTA, Susanta , BARNETT, Kenneth C.
IPC分类号： H03F1/32 , H03F3/45
摘要： Techniques for designing a highly differential single-ended-to-differential converter for use in, e.g., communications receivers. In an exemplary embodiment, an auxiliary current path including cascomp transistors is coupled to a main current path including input transistors and cascode transistors. The transistors are biased such that inter-modulation products generated by the auxiliary current path cancel out inter-modulation products generated by the main current path. In another exemplary embodiment, current source transistors for the main current path are adaptively biased depending on the level of the input signal received. In an exemplary embodiment, the techniques may be applied to designing a converter for interfacing a single-ended low-noise amplifier (LNA) output voltage with a differential mixer input in a communications receiver.

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