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    • 3. 发明申请
    • FINITE IMPULSE RESPONSE (FIR) FILTER WITHOUT DECIMATION
    • 有限冲突响应(FIR)滤波器,不带十进制
    • US20090327793A1
    • 2009-12-31
    • US12355182
    • 2009-01-16
    • Jin-hyun KimJin-Soo ParkHyung-sun LimHan-Woong YooYoung-Eil KimBum-Man KimChang-Joon Park
    • Jin-hyun KimJin-Soo ParkHyung-sun LimHan-Woong YooYoung-Eil KimBum-Man KimChang-Joon Park
    • G06F17/10G06F1/06
    • H03H15/023
    • Provided is a discrete signal finite impulse response (FIR) filter and a filter set in which a plurality of FIR filter units are connected in a cascade structure to remove down-sampling by decimation, in order to improve the attenuation characteristics of a FIR filter, such as, for example, a switched capacitor filter. The FIR filter includes a clock generator generating a plurality of clock signals that are different from each other; and N+2 sub blocks each including N sample storage units, each sample storage unit storing a received sample. Each sub block being in a state among a number of possible states including N charging states for storing the received sample, a transfer state for outputting the stored sample and a reset state for operation initialization. The N charging states, the transfer state and the reset state are changed sequentially in response to the clock signals.
    • 提供了一种离散信号有限脉冲响应(FIR)滤波器和滤波器组,其中多个FIR滤波器单元以级联结构连接以通过抽取来去除下采样,以便提高FIR滤波器的衰减特性, 例如开关电容滤波器。 FIR滤波器包括产生彼此不同的多个时钟信号的时钟发生器; 和N + 2个子块,每个子块包括N个采样存储单元,每个采样存储单元存储接收的采样。 每个子块处于包括用于存储所接收的采样的N个充电状态,用于输出所存储的采样的传送状态和用于操作初始化的复位状态的多个可能状态之间的状态。 响应于时钟信号,N个充电状态,传送状态和复位状态顺序地改变。