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    • 4. 发明公开
    • 고조파 제거기능을 갖는 전류 샘플링 믹서
    • 具有谐波抑制的电流采样混频器
    • KR1020090105372A
    • 2009-10-07
    • KR1020080030793
    • 2008-04-02
    • 삼성전기주식회사
    • 박경석김남흥김규석
    • H03D7/18
    • H03M1/804H03D7/14H03D2200/006H03D2200/0074H03D2200/0086
    • PURPOSE: A current sampling mixer with a harmonic rejection function is provided to obtain the harmonic rejection function by selecting and combining capacitors with the weight by changing the current sampler structure with the capacitors. CONSTITUTION: A first current source is connected to a first input terminal and supplies the positive current of an input signal. A second current source is connected to a second input terminal and supplies the negative current of an input signal. A charge selection unit(110) includes a plurality of charge switches. The charge switches are successively on for a charge time and are off for the sum output time. A capacitor circuit unit(120) includes a plurality of capacitor pairs connected to the charge switches. The capacitor pair includes a front capacitor and a rear capacitor. A weight selection unit(130) includes the weight switches. The weight switches are on for the charging time and are off for the sum output time to apply the weight. A filtering circuit(140) includes a plurality of output switches. The output switches are on for the sum output.
    • 目的:提供具有谐波抑制功能的电流采样混频器,通过用电容器改变电流采样器结构,通过选择和组合电容器来获得谐波抑制功能。 构成:第一电流源连接到第一输入端并提供输入信号的正电流。 第二电流源连接到第二输入端并提供输入信号的负电流。 电荷选择单元(110)包括多个充电开关。 充电开关连续导通充电时间,并在总和输出时间关闭。 电容器电路单元(120)包括连接到充电开关的多个电容器对。 电容器对包括前电容器和后电容器。 重量选择单元(130)包括重量开关。 重量开关打开充电时间,关闭总和输出时间以应用重量。 滤波电路(140)包括多个输出开关。 输出开关为和输出。