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1. 发明申请

US20090085549A1 BANDGAP REFERENCE CIRCUIT WITH REDUCED POWER CONSUMPTION 有权
标题翻译：具有降低功耗的带宽参考电路
公开(公告)号：US20090085549A1
公开(公告)日：2009-04-02
申请号：US11866120
申请日：2007-10-02
申请人： Susanta Sengupta , Kenneth Charles Barnett , Yunfei Feng
发明人： Susanta Sengupta , Kenneth Charles Barnett , Yunfei Feng
IPC分类号： G05F3/16 , G05F3/02
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。

2. 发明申请

US20100329158A1 RF SINGLE-ENDED TO DIFFERENTIAL CONVERTER 有权
标题翻译： RF单端到差分转换器
公开(公告)号：US20100329158A1
公开(公告)日：2010-12-30
申请号：US12606003
申请日：2009-10-26
申请人： Susanta Sengupta , Kenneth C. Barnett
发明人： Susanta Sengupta , Kenneth C. Barnett
IPC分类号： H04B7/005 , G05F3/02 , H04B1/44
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. 发明授权

US07834698B2 Amplifier with improved linearization 有权
标题翻译：放大器具有改进的线性化
公开(公告)号：US07834698B2
公开(公告)日：2010-11-16
申请号：US12126189
申请日：2008-05-23
申请人： Susanta Sengupta , Kenneth Charles Barnett
发明人： Susanta Sengupta , Kenneth Charles Barnett
IPC分类号： H03F3/45
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 may include a transconductance stage, a tail current source stage, and an adaptive biasing stage. The transconductance stage may be configured to receive an input voltage. The tail current source stage may be configured to provide current to the transconductance stage. 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，放大器可以包括跨导级，尾电流源级和自适应偏置级。跨导级可以被配置为接收输入电压。尾电流源级可以被配置为向跨导级提供电流。自适应偏置级可以将跨导级电容耦合到尾电流源级。

4. 发明申请

US20100026547A1 METHOD AND APPARATUS FOR PROVIDING JAMMER DETECTION IN A RECEIVER 失效
标题翻译：用于在接收器中提供JAMMER检测的方法和装置
公开(公告)号：US20100026547A1
公开(公告)日：2010-02-04
申请号：US12508308
申请日：2009-07-23
申请人： Haim M. Weissman , Avigdor Brillant , Susanta Sengupta
发明人： Haim M. Weissman , Avigdor Brillant , Susanta Sengupta
IPC分类号： G01S7/36
CPC分类号： H04B1/1027 , H04B1/109
摘要： A method and apparatus for detecting a jammer comprising sampling an input signal; downconverting and sampling the input signal to generate a sampled downconverted (SD) input signal; comparing the sampled input signal to a wideband threshold THWB, and comparing the SD input signal to a narrowband threshold THNB; generating a wideband (WB) interrupt signal based on the comparison to the THWB, and generating a narrowband (NB) interrupt signal based on the comparison to the THNB; and generating a composite interrupt signal based on at least one of WB interrupt signal and NB interrupt signal. In one aspect, the apparatus comprises a wideband jammer detector for generating a WB interrupt signal to indicate a wideband jammer; a narrowband jammer detector for generating a NB interrupt signal to indicate a narrowband jammer; and interrupt logic for generating a composite interrupt signal based on one of WB interrupt signal and NB interrupt signal.
摘要翻译：一种用于检测干扰信号的方法和装置，包括对输入信号进行采样; 对输入信号进行下变频和采样以产生采样的下变频（SD）输入信号; 将采样的输入信号与宽带阈值THWB进行比较，并将SD输入信号与窄带阈值THNB进行比较; 基于与THWB的比较产生宽带（WB）中断信号，并且基于与THNB的比较来生成窄带（NB）中断信号; 以及基于WB中断信号和NB中断信号中的至少一个产生复合中断信号。一方面，该装置包括用于产生WB中断信号以指示宽带干扰的宽带干扰检测器; 用于产生NB中断信号以指示窄带干扰的窄带干扰检测器; 以及用于基于WB中断信号和NB中断信号之一产生复合中断信号的中断逻辑。

5. 发明申请

US20090289715A1 AMPLIFIER WITH IMPROVED LINEARIZATION 有权
标题翻译：具有改进线性化的放大器
公开(公告)号：US20090289715A1
公开(公告)日：2009-11-26
申请号：US12126189
申请日：2008-05-23
申请人： Susanta Sengupta , Kenneth Charles Barnett
发明人： Susanta Sengupta , Kenneth Charles Barnett
IPC分类号： H03F3/45
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 may include a transconductance stage, a tail current source stage, and an adaptive biasing stage. The transconductance stage may be configured to receive an input voltage. The tail current source stage may be configured to provide current to the transconductance stage. 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，放大器可以包括跨导级，尾电流源级和自适应偏置级。跨导级可以被配置为接收输入电压。尾电流源级可以被配置为向跨导级提供电流。自适应偏置级可以将跨导级电容耦合到尾电流源级。

6. 发明授权

US07598793B1 Capacitance multiplier circuit 有权
标题翻译：电容倍增电路
公开(公告)号：US07598793B1
公开(公告)日：2009-10-06
申请号：US12053388
申请日：2008-03-21
申请人： Susanta Sengupta , Kenneth Charles Barnett
发明人： Susanta Sengupta , Kenneth Charles Barnett
IPC分类号： H03H11/40
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。

7. 发明授权

US08559865B2 Method and apparatus for providing jammer detection in a receiver 失效
标题翻译：用于在接收机中提供干扰检测的方法和装置
公开(公告)号：US08559865B2
公开(公告)日：2013-10-15
申请号：US12508308
申请日：2009-07-23
申请人： Haim M. Weissman , Avigdor Brillant , Susanta Sengupta
发明人： Haim M. Weissman , Avigdor Brillant , Susanta Sengupta
IPC分类号： H04K3/00
CPC分类号： H04B1/1027 , H04B1/109
摘要： A method and apparatus for detecting a jammer comprising sampling an input signal; downconverting and sampling the input signal to generate a sampled downconverted (SD) input signal; comparing the sampled input signal to a wideband threshold THWB, and comparing the SD input signal to a narrowband threshold THNB; generating a wideband (WB) interrupt signal based on the comparison to the THWB, and generating a narrowband (NB) interrupt signal based on the comparison to the THNB; and generating a composite interrupt signal based on at least one of WB interrupt signal and NB interrupt signal. In one aspect, the apparatus comprises a wideband jammer detector for generating a WB interrupt signal to indicate a wideband jammer; a narrowband jammer detector for generating a NB interrupt signal to indicate a narrowband jammer; and interrupt logic for generating a composite interrupt signal based on one of WB interrupt signal and NB interrupt signal.
摘要翻译：一种用于检测干扰信号的方法和装置，包括对输入信号进行采样; 对输入信号进行下变频和采样以产生采样的下变频（SD）输入信号; 将采样的输入信号与宽带阈值THWB进行比较，并将SD输入信号与窄带阈值THNB进行比较; 基于与THWB的比较产生宽带（WB）中断信号，并且基于与THNB的比较来生成窄带（NB）中断信号; 以及基于WB中断信号和NB中断信号中的至少一个产生复合中断信号。一方面，该装置包括用于产生WB中断信号以指示宽带干扰的宽带干扰检测器; 用于产生NB中断信号以指示窄带干扰的窄带干扰检测器; 以及用于基于WB中断信号和NB中断信号之一产生复合中断信号的中断逻辑。

8. 发明授权

US07839202B2 Bandgap reference circuit with reduced power consumption 有权
标题翻译：带隙参考电路，功耗降低
公开(公告)号：US07839202B2
公开(公告)日：2010-11-23
申请号：US11866120
申请日：2007-10-02
申请人： Susanta Sengupta , Kenneth Charles Barnett , Yunfei Feng
发明人： Susanta Sengupta , Kenneth Charles Barnett , Yunfei Feng
IPC分类号： G05F1/10
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。

9. 发明申请

US20090237143A1 CAPACITANCE MULTIPLIER CIRCUIT 有权
标题翻译：电容乘法器电路
公开(公告)号：US20090237143A1
公开(公告)日：2009-09-24
申请号：US12053388
申请日：2008-03-21
申请人： Susanta Sengupta , Kenneth Charles Barnett
发明人： Susanta Sengupta , Kenneth Charles Barnett
IPC分类号： H03H11/40 , H04B1/10
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。

10. 发明授权

US08665028B2 Amplifier with integrated filter 有权
标题翻译：带集成滤波器的放大器
公开(公告)号：US08665028B2
公开(公告)日：2014-03-04
申请号：US13543532
申请日：2012-07-06
申请人： Tae Wook Kim , Guy Klemens , Kenneth Charles Barnett , Susanta Sengupta , Gurkanwal Singh Sahota
发明人： Tae Wook Kim , Guy Klemens , Kenneth Charles Barnett , Susanta Sengupta , Gurkanwal Singh Sahota
IPC分类号： H03F3/04
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, a filter stage, and a buffer stage. The gain stage may provide signal amplification for an input signal. The filter stage may provide filtering for the input signal. The buffer stage may buffer a filtered signal from the filter stage. The amplifier may further include a second filter stage and a second buffer stage. The second filter stage may provide additional filtering for the input signal. The second buffer stage 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，滤波级和缓冲级。增益级可以为输入信号提供信号放大。滤波器级可以为输入信号提供滤波。缓冲级可以缓冲来自滤波级的滤波信号。放大器还可以包括第二滤波器级和第二缓冲级。第二滤波器级可以为输入信号提供额外的滤波。第二缓冲级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。

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