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    • 1. 发明授权
    • Low noise amplifier protection using a peak detector
    • 使用峰值检测器的低噪声放大器保护
    • US08903340B2
    • 2014-12-02
    • US13169699
    • 2011-06-27
    • Yuyu ChangHooman Darabi
    • Yuyu ChangHooman Darabi
    • H03G3/34H03G3/30H04B1/10H03G11/02
    • H04B1/109H03G3/3052H03G3/345H03G11/02
    • Embodiments of a radio frequency (RF) receiver implementing one or more forms of protection to protect devices of the RF receiver from in-band interferers is provided. The RF receiver includes an integrated circuit terminal configured to couple a RF signal received at an antenna to a RF signal path, and a low noise amplifier (LNA) coupled to the RF signal path and configured to amplify the RF signal to provide an amplified RF signal. To protect the LNA from in-band interferers, the RF receiver can further include one or more clamping circuits and/or an over-voltage detector to determine if a peak of the RF signal exceeds an acceptable level.
    • 提供了实现一种或多种形式的保护的射频(RF)接收机的实施例,以保护RF接收机的设备免受带内干扰。 RF接收机包括被配置为将在天线处接收的RF信号耦合到RF信号路径的集成电路终端和耦合到RF信号路径的低噪声放大器(LNA),并被配置为放大RF信号以提供放大RF 信号。 为了保护LNA免受带内干扰,RF接收机还可包括一个或多个钳位电路和/或过电压检测器,以确定RF信号的峰值是否超过可接受的电平。
    • 3. 发明申请
    • LOW FLICKER NOISE MIXER AND BUFFER
    • 低闪烁噪音混合器和缓冲器
    • US20090134932A1
    • 2009-05-28
    • US11944715
    • 2007-11-26
    • Yuyu ChangHooman Darabi
    • Yuyu ChangHooman Darabi
    • G06G7/16
    • G06G7/16H03D7/1441H03D7/1458H03D7/1466H03D2200/0084
    • Low flicker noise mixer and buffer. This design employs some native metal oxide semiconductor field-effect transistors (MOSFETs) (e.g., having no threshold voltage) within a passive mixer whose gates are driven using clock signals. These native MOSFETs maybe biased at one half of the power supply voltage to provide a lower noise figure. A cooperatively operating buffer employs appropriately places MOSFETs and resistors to ensure the desired gain. Relatively larger valued resistors can be employed to provide for higher voltage gain, and this can sometimes be accompanied with using a higher than typical power supply voltage. Source followers serve as output buffers and also ensure the required output DC voltage level as well. It is also noted that this design can be implemented using n-channel metal oxide semiconductor field-effect transistors (N-MOSFETs) of p-channel metal oxide semiconductor field-effect transistors (P-MOSFETs).
    • 低闪烁噪声混频器和缓冲器。 该设计在无源混频器内采用一些本征金属氧化物半导体场效应晶体管(MOSFET)(例如,不具有阈值电压),其门的栅极使用时钟信号驱动。 这些原生MOSFET可能偏置在电源电压的一半处,以提供较低的噪声系数。 合作运行的缓冲器适当地放置MOSFET和电阻器以确保期望的增益。 可以采用相对较大值的电阻器来提供更高的电压增益,并且有时可以伴随使用高于典型的电源电压。 源跟随器用作输出缓冲器,并且还确保所需的输出直流电压电平。 还应注意,该设计可以使用p沟道金属氧化物半导体场效应晶体管(P-MOSFET)的n沟道金属氧化物半导体场效应晶体管(N-MOSFET)来实现。
    • 6. 发明授权
    • Low flicker noise mixer and buffer
    • 低闪烁噪声混频器和缓冲器
    • US07679431B2
    • 2010-03-16
    • US11944715
    • 2007-11-26
    • Yuyu ChangHooman Darabi
    • Yuyu ChangHooman Darabi
    • H03B1/00H03K5/00H04B1/10
    • G06G7/16H03D7/1441H03D7/1458H03D7/1466H03D2200/0084
    • Low flicker noise mixer and buffer. This design employs some native metal oxide semiconductor field-effect transistors (MOSFETs) (e.g., having no threshold voltage) within a passive mixer whose gates are driven using clock signals. These native MOSFETs maybe biased at one half of the power supply voltage to provide a lower noise figure. A cooperatively operating buffer employs appropriately places MOSFETs and resistors to ensure the desired gain. Relatively larger valued resistors can be employed to provide for higher voltage gain, and this can sometimes be accompanied with using a higher than typical power supply voltage. Source followers serve as output buffers and also ensure the required output DC voltage level as well. It is also noted that this design can be implemented using n-channel metal oxide semiconductor field-effect transistors (N-MOSFETs) of p-channel metal oxide semiconductor field-effect transistors (P-MOSFETs).
    • 低闪烁噪声混频器和缓冲器。 该设计在无源混频器内采用一些本征金属氧化物半导体场效应晶体管(MOSFET)(例如,不具有阈值电压),其门的栅极使用时钟信号驱动。 这些原生MOSFET可能偏置在电源电压的一半处,以提供较低的噪声系数。 合作运行的缓冲器适当地放置MOSFET和电阻器以确保期望的增益。 可以采用相对较大值的电阻器来提供更高的电压增益,并且有时可以伴随使用高于典型的电源电压。 源跟随器用作输出缓冲器,并且还确保所需的输出直流电压电平。 还应注意,该设计可以使用p沟道金属氧化物半导体场效应晶体管(P-MOSFET)的n沟道金属氧化物半导体场效应晶体管(N-MOSFET)来实现。
    • 9. 发明申请
    • Low Noise Amplifier Protection Using A Peak Detector
    • 使用峰值检测器的低噪声放大器保护
    • US20120329417A1
    • 2012-12-27
    • US13169699
    • 2011-06-27
    • Yuyu ChangHooman Darabi
    • Yuyu ChangHooman Darabi
    • H04B7/00
    • H04B1/109H03G3/3052H03G3/345H03G11/02
    • Embodiments of a radio frequency (RF) receiver implementing one or more forms of protection to protect devices of the RF receiver from in-band interferers is provided. The RF receiver includes an integrated circuit terminal configured to couple a RF signal received at an antenna to a RF signal path, and a low noise amplifier (LNA) coupled to the RF signal path and configured to amplify the RF signal to provide an amplified RF signal. To protect the LNA from in-band interferers, the RF receiver can further include one or more clamping circuits and/or an over-voltage detector to determine if a peak of the RF signal exceeds an acceptable level.
    • 提供了实现一种或多种形式的保护的射频(RF)接收机的实施例,以保护RF接收机的设备免受带内干扰。 RF接收机包括被配置为将在天线处接收的RF信号耦合到RF信号路径的集成电路终端和耦合到RF信号路径的低噪声放大器(LNA),并被配置为放大RF信号以提供放大RF 信号。 为了保护LNA免受带内干扰,RF接收机还可包括一个或多个钳位电路和/或过电压检测器,以确定RF信号的峰值是否超过可接受的电平。