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1. 发明申请

WO2008115907A1 LINEAR TRANSCONDUCTOR FOR RF COMMUNICATIONS 审中-公开
标题翻译：用于射频通信的线性TRANSCONDUCTOR
公开(公告)号：WO2008115907A1
公开(公告)日：2008-09-25
申请号：PCT/US2008/057319
申请日：2008-03-18
申请人： QUALCOMM Incorporated , MUTHALI, Harish , BARNETT, Kenneth, Charles
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.
摘要翻译：本专利申请包括具有至少一个输入和至少一个输出的线性跨导体，包括具有多个晶体管和多个输入的差分放大器，其中输入信号的差异被放大，具有多个输入信号的共源共栅电路晶体管，其中晶体管可操作地连接到差分放大器，其中线性跨导器的输入和输出之间的反向隔离通过将多个晶体管中的至少一个晶体管安装到线性跨导器的输入和输出而被改善作为堆叠在差分放大器的至少一个晶体管上的公共栅极的共源共栅电路，具有可操作地连接在共源共栅电路和电源电压之间的多个晶体管的有源负载和可操作地连接到所述串联电路之间的连接的辅助装置有源负载，共源共栅器件和地。

2. 发明申请

WO2009117712A1 CAPACITANCE MULTIPLIER CIRCUIT 审中-公开
标题翻译：电容乘法器电路
公开(公告)号：WO2009117712A1
公开(公告)日：2009-09-24
申请号：PCT/US2009/037889
申请日：2009-03-20
申请人： QUALCOMM INCORPORATED , SENGUPTA, Susanta , BARNETT, Kenneth, Charles
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：电容乘法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器效应，而不增加附加电路或需要额外的功率。电路包括RC滤波器，连接到滤波器输出的第一信号路径和连接到滤波器的输入端的第二信号路径。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条路径中相乘。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。电容乘法器电路在提高滤波器中的电容器的有效电容时不影响频率响应，线性性能和 /或整体电路的稳定性。

3. 发明申请

WO2007016552A1 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放大器
公开(公告)号：WO2007016552A1
公开(公告)日：2007-02-08
申请号：PCT/US2006/029905
申请日：2006-07-31
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
CPC分类号： H03F1/223 , H03F1/3205 , H03F1/3276 , H03F2200/294 , H03F2200/372 , H04B1/525
摘要： An amplifier, which has good linearity and noise performance, includes first, second, third, and fourth transistors and an inductor. The first and second transistors are coupled as a first cascode pair, and the third and fourth transistors are coupled as a second cascode pair. The third transistor has its gate coupled to the source of the second transistor, and the fourth transistor has its drain coupled to the drain of the second transistor. The first transistor provides signal amplification. The second transistor provides load isolation and generates an intermediate signal for the third transistor. The third transistor generates distortion components used to cancel third order distortion component generated by the first transistor. The inductor provides source degeneration for the first transistor and improves distortion cancellation. The sizes of the second and third transistors are selected to reduce gain loss and achieve good linearity for the amplifier.
摘要翻译：具有良好线性度和噪声性能的放大器包括第一，第二，第三和第四晶体管和电感器。第一和第二晶体管作为第一共源共栅对耦合，并且第三和第四晶体管作为第二共源共栅对耦合。第三晶体管的栅极耦合到第二晶体管的源极，并且第四晶体管的漏极耦合到第二晶体管的漏极。第一个晶体管提供信号放大。第二晶体管提供负载隔离并为第三晶体管产生中间信号。第三晶体管产生用于消除由第一晶体管产生的三阶失真分量的失真分量。电感器为第一晶体管提供源极退化，并改善失真消除。选择第二和第三晶体管的尺寸以减小增益损耗并且获得放大器的良好线性度。

4. 发明申请

WO2009143480A1 AMPLIFIER WITH IMPROVED LINEARIZATION 审中-公开
标题翻译：具有改进线性化的放大器
公开(公告)号：WO2009143480A1
公开(公告)日：2009-11-26
申请号：PCT/US2009/045065
申请日：2009-05-22
申请人： QUALCOMM INCORPORATED , SENGUPTA, Susanta , BARNETT, Kenneth, Charles
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.
摘要翻译：根据一些实施例，放大器（200）可以包括跨导级（210），尾电流源级（230）和自适应偏置级。跨导级（210）可以被配置为接收输入电压（Vim）。尾电流源级（230）可以被配置为向跨导级（210）提供电流。自适应偏置级可以将跨导级电容耦合到尾电流源级。

5. 发明申请

WO2008112611A1 FREQUENCY SELECTIVE AMPLIFIER WITH WIDE-BAND IMPEDANCE AND NOISE MATCHING 审中-公开
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：WO2008112611A1
公开(公告)日：2008-09-18
申请号：PCT/US2008/056366
申请日：2008-03-10
申请人： QUALCOMM Incorporated , KIM, Tae, Wook , BARNETT, Kenneth, Charles
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.
摘要翻译：本公开涉及具有宽带阻抗和噪声匹配的频率选择性低噪声放大器（LNA）。 LNAS可以包括支持宽带输入匹配的闭环电路。例如，闭环电路可以被配置为阻抗匹配输入信号并提供低噪声系数。另外，LNA可以包括放大输入信号并提供高输出阻抗的开环电路。开环电路还可以包括滤除期望频带外的频率的选择性滤波器。 LNA可以通过开环电路驱动可调谐带通滤波器。

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