会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 16. 发明授权
    • Variable gain amplifier
    • 可变增益放大器
    • US07199660B2
    • 2007-04-03
    • US10730832
    • 2003-12-08
    • Chong Ki KwonGyu Hyung ChoMun Yang ParkJong Dae Kim
    • Chong Ki KwonGyu Hyung ChoMun Yang ParkJong Dae Kim
    • H03F3/45
    • H03F3/45179H03G1/0023
    • Disclosed is a CMOS variable gain amplifier (VGA). The variable gain amplifier comprises a voltage-current converter for converting voltages of a wide input range into currents, a current shared circuit for receiving the currents from the voltage-current converter and controlling values of output currents depending on first and second control voltages, and a current-voltage converter for converting the output currents from the current shared circuit into differential voltages depending on a bias voltage in order to obtain a variable gain. The voltage amplifier having a variable gain is provided by controlling the value of the output current of the drain terminal against the gate voltage of the NMOS transistor constituting the current shared circuit. Therefore, an integrated circuit (IC) type variable gain amplifier operating a high speed at a low supply voltage can be obtained.
    • 公开了一种CMOS可变增益放大器(VGA)。 可变增益放大器包括用于将宽输入范围的电压转换为电流的电压 - 电流转换器,用于接收来自电压 - 电流转换器的电流的电流共享电路,以及根据第一和第二控制电压控制输出电流的值;以及 电流 - 电压转换器,用于根据偏置电压将来自当前共享电路的输出电流转换成差分电压,以获得可变增益。 具有可变增益的电压放大器是通过根据构成当前共享电路的NMOS晶体管的栅极电压控制漏极端子的输出电流的值来提供的。 因此,可以获得在低电源电压下高速运行的集成电路(IC)型可变增益放大器。
    • 19. 发明授权
    • Amplifier and method for canceling nonlinearity in amplifier
    • 用于消除放大器非线性的放大器和方法
    • US06940350B2
    • 2005-09-06
    • US10618507
    • 2003-07-11
    • Yong-Sik YounHyun-Kyu YuMun-Yang Park
    • Yong-Sik YounHyun-Kyu YuMun-Yang Park
    • H03F1/30H03F1/32H03F3/04H03F3/345H03F1/22
    • H03F3/345H03F1/301H03F1/3205H03F3/04
    • An amplifier including an amplifier transistor that operates in an active region has main current flowing therethrough according to input voltage, and a linear transistor that is driven by offset positive-polarity input voltage to operate in a linear region and has auxiliary current flowing therethrough. The main current and auxiliary current are added to become output current. The offset positive-polarity voltage corresponds to the sum of AC component of the input voltage and an offset DC voltage. Here, a transistor stacked on the linear transistor is coupled to the amplifier transistor to secure the linear region operation of the linear transistor. The stacked transistor is driven by a voltage having polarity opposite to that of the input voltage.
    • 包括在有源区域中工作的放大器晶体管的放大器根据输入电压具有流过其中的主电流,以及由偏移正极性输入电压驱动以在线性区域中操作并具有辅助电流流过其中的线性晶体管。 主电流和辅助电流相加,成为输出电流。 偏移正极性电压对应于输入电压的交流分量和偏移直流电压之和。 这里,堆叠在线性晶体管上的晶体管耦合到放大器晶体管,以确保线性晶体管的线性区域操作。 堆叠晶体管由具有与输入电压的极性相反的极性的电压驱动。