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1. 发明公开

EP2263313A1 CAPACITANCE MULTIPLIER CIRCUIT 有权
标题翻译：电容乘法器电路
公开(公告)号：EP2263313A1
公开(公告)日：2010-12-22
申请号：EP09723336.5
申请日：2009-03-20
申请人： QUALCOMM Incorporated
发明人： SENGUPTA, Susanta , BARNETT, Kenneth, Charles
IPC分类号： H03H11/40 , H03H11/48 , H03H11/04 , H03F3/08 , H03F3/45
CPC分类号： H03H11/405 , H03F3/45183 , H03F3/45659 , H03F2200/456 , H03F2203/45318 , H03F2203/45526 , H03F2203/45646 , H03H11/0416 , H03H11/483
摘要： A capacitance multiplier circuit is configured to sense a current through a capacitor in an RC filter of the circuit and to multiply the current so as to achieve a capacitance multiplier effect without adding additional circuitry or requiring additional power. The circuit includes an RC filter, a first signal path connected to a filter output, and a second signal path connected to an input to the filter. A current output through the filter (iout) is split between the two paths, sensed in the first path and multiplied in the second path. The multiplied current is fed back from the second path to the filter input to raise the effective capacitance of capacitor C. The capacitance multiplier circuit, in raising the effective capacitance of the capacitor in the filter, does not affect the frequency response, linearity performance and/or stability of the overall circuit.
摘要翻译：电容倍增器电路被配置为感测通过电路的RC滤波器中的电容器的电流并且乘以电流以实现电容倍增效应而不增加额外的电路或需要额外的功率。该电路包括RC滤波器，连接到滤波器输出的第一信号路径以及连接到滤波器的输入的第二信号路径。通过滤波器（iout）的电流输出在两条路径之间分开，在第一路径中感测并在第二路径中倍增。倍增电流从第二路径反馈到滤波器输入，以提高电容器C的有效电容。电容倍增器电路在提高滤波器中电容器的有效电容时不会影响频率响应，线性性能和 /或整个电路的稳定性。

2. 发明公开

EP2294689A1 AMPLIFIER WITH IMPROVED LINEARIZATION 审中-公开
标题翻译：具有改进的线性化放大器
公开(公告)号：EP2294689A1
公开(公告)日：2011-03-16
申请号：EP09751708.0
申请日：2009-05-22
申请人： QUALCOMM Incorporated
发明人： SENGUPTA, Susanta , BARNETT, Kenneth, Charles
IPC分类号： H03F1/32 , H03F3/45 , H03F3/195
CPC分类号： H03F1/3211 , H03F3/195 , H03F3/45179 , H03F2200/294 , H03F2203/45018 , H03F2203/45454 , H03F2203/45512 , H03F2203/45544
摘要： According to some embodiments, an amplifier (200) may include a transconductance stage (210), a tail current source stage, (230) and an adaptive biasing stage. The transconductance stage (210) may be configured to receive an input voltage (Vim). The tail current source stage (230) may be configured to provide current to the transconductance stage (210). The adaptive biasing stage may capacitively couple the transconductance stage to the tail current source stage.

3. 发明公开

EP2127069A1 LINEAR TRANSCONDUCTOR FOR RF COMMUNICATIONS 有权
标题翻译：线性跨射频通信所
公开(公告)号：EP2127069A1
公开(公告)日：2009-12-02
申请号：EP08743993.1
申请日：2008-03-18
申请人： QUALCOMM Incorporated
发明人： MUTHALI, Harish , BARNETT, Kenneth, Charles
IPC分类号： H03F1/32 , H03F3/45
CPC分类号： H03F3/45188 , H03F1/32 , H03F1/3211 , H03F3/45 , H03F3/45659 , H03F2200/357 , H03F2203/45068 , H03F2203/45318 , H03F2203/45352
摘要： The present patent application comprises a linear transconductor having at least one input and at least one output, comprising a differential amplifier having a plurality of transistors and a plurality of inputs, wherein a difference of input signals is amplified, a cascode circuit having a plurality of transistors, wherein the transistors are operably connected to the differential amplifier, wherein reverse isolation between an input and an output of the linear transconductor is improved by decoupling the input and the output of the linear transconductor by mounting at least one transistor of the plurality of transistors of the cascode circuit as a common-gate stacked on the at least one transistor of the differential amplifier, an active load having a plurality of transistors operably connected between the cascode circuit and supply voltage, and an auxiliary device operably connected to the connection between the active load, the cascode device and ground.

4. 发明授权

EP2127069B1 LINEAR TRANSCONDUCTOR FOR RF COMMUNICATIONS 有权
标题翻译：线性跨射频通信所
公开(公告)号：EP2127069B1
公开(公告)日：2012-04-18
申请号：EP08743993.1
申请日：2008-03-18
申请人： QUALCOMM Incorporated
发明人： MUTHALI, Harish , BARNETT, Kenneth, Charles
IPC分类号： H03F1/32 , H03F3/45
CPC分类号： H03F3/45188 , H03F1/32 , H03F1/3211 , H03F3/45 , H03F3/45659 , H03F2200/357 , H03F2203/45068 , H03F2203/45318 , H03F2203/45352
摘要： The present patent application comprises a linear transconductor having at least one input and at least one output, comprising a differential amplifier having a plurality of transistors and a plurality of inputs, wherein a difference of input signals is amplified, a cascode circuit having a plurality of transistors, wherein the transistors are operably connected to the differential amplifier, wherein reverse isolation between an input and an output of the linear transconductor is improved by decoupling the input and the output of the linear transconductor by mounting at least one transistor of the plurality of transistors of the cascode circuit as a common-gate stacked on the at least one transistor of the differential amplifier, an active load having a plurality of transistors operably connected between the cascode circuit and supply voltage, and an auxiliary device operably connected to the connection between the active load, the cascode device and ground.

5. 发明授权

EP2130297B1 FREQUENCY SELECTIVE AMPLIFIER WITH WIDE-BAND IMPEDANCE AND NOISE MATCHING 有权
标题翻译：具有宽带阻抗和噪声匹配的频率选择放大器
公开(公告)号：EP2130297B1
公开(公告)日：2017-05-03
申请号：EP08731786.3
申请日：2008-03-10
申请人： Qualcomm Incorporated
发明人： KIM, Tae, Wook , BARNETT, Kenneth, Charles
IPC分类号： H03H11/12 , H03F3/45 , H03F1/56
CPC分类号： H03F1/56 , H03F3/45188 , H03F2203/45296 , H03F2203/45316 , H03F2203/45511 , H03F2203/45512 , H03F2203/45704 , H03H11/1291

6. 发明授权

EP2263313B1 CAPACITANCE MULTIPLIER CIRCUIT 有权
标题翻译：电容乘法器电路
公开(公告)号：EP2263313B1
公开(公告)日：2012-12-26
申请号：EP09723336.5
申请日：2009-03-20
申请人： QUALCOMM Incorporated
发明人： SENGUPTA, Susanta , BARNETT, Kenneth, Charles
IPC分类号： H03H11/40 , H03H11/48 , H03H11/04 , H03F3/08 , H03F3/45
CPC分类号： H03H11/405 , H03F3/45183 , H03F3/45659 , H03F2200/456 , H03F2203/45318 , H03F2203/45526 , H03F2203/45646 , H03H11/0416 , H03H11/483

7. 发明公开

EP2130297A1 FREQUENCY SELECTIVE AMPLIFIER WITH WIDE-BAND IMPEDANCE AND NOISE MATCHING 有权
标题翻译：噪声和平衡BREITBANDIMPENDANZ频率选择放大器
公开(公告)号：EP2130297A1
公开(公告)日：2009-12-09
申请号：EP08731786.3
申请日：2008-03-10
申请人： Qualcomm Incorporated
发明人： KIM, Tae, Wook , BARNETT, Kenneth, Charles
IPC分类号： H03F1/56 , H03F3/45
CPC分类号： H03F1/56 , H03F3/45188 , H03F2203/45296 , H03F2203/45316 , H03F2203/45511 , H03F2203/45512 , H03F2203/45704 , H03H11/1291
摘要： This disclosure is directed to a frequency-selective low noise amplifier (LNA) with wide-band impedance and noise matching. The LNAS may include a closed loop circuit that supports wideband input matching. For example, the closed loop circuit may be configure to impedance match an input signal and provide a low noise figure. In addition, the LNA may include an open loop circuit that amplifies the input signal and provides a high output impedance. The open loop circuit may further include a selectivity filter that filters out frequencies outside a desired frequency band. The LNA may drive a tunable band-pass filter via the open loop circuit.

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