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    • 3. 发明授权
    • Methods and systems to provide low noise amplification
    • 提供低噪声放大的方法和系统
    • US09124229B2
    • 2015-09-01
    • US13800811
    • 2013-03-13
    • Intel Corporation
    • Viatcheslav I. SuetinovKeith PinsonNicholas P. Cowley
    • H03F3/45
    • H03F3/45237H03F3/189
    • An amplifier, including a voltage-to-current converter (V2I) to control an output current based on an input voltage, resistive degeneration circuitry to reduce baseband gain of the voltage-to-current converter, capacitive degeneration circuitry to increase passband gain of the voltage-to-current converter, and impedance control circuitry to compensate for negative input impedance of the capacitive degeneration circuitry. The V2I may include series-connected complimentary V2Is. The impedance control circuitry may include resistive negative feedback to provide a real part of input impedance, which may increase a frequency range for which the amplifier is linear. Capacitive degeneration and associated phase compensation may increase a frequency range for which the resistive feedback is negative. The amplifier may be configured as a single-input/single-output system and/or as a differential system.
    • 放大器,包括基于输入电压控制输出电流的电压 - 电流转换器(V2I),用于降低电压 - 电流转换器的基带增益的电阻退化电路,用于增加电压 - 电流转换器的通带增益 电压 - 电流转换器和阻抗控制电路,以补偿电容性退化电路的负输入阻抗。 V2I可能包括串联互补的V2I。 阻抗控制电路可以包括电阻性负反馈以提供输入阻抗的实部,其可以增加放大器为线性的频率范围。 电容退化和相关的相位补偿可能会增加电阻反馈为负的频率范围。 放大器可以被配置为单输入/单输出系统和/或差分系统。