公开(公告)号：EP1708363A2

公开(公告)日：2006-10-04

申请号：EP06111953.3

申请日：2006-03-29

Applicant: Stmicroelectronics Ltd.

Inventor： Chiskis, Alexander

IPC: H03H17/06 ,  H03H17/02

CPC classification number: H03H17/0275 ,  H03H17/0657 ,  H03H17/0664

Abstract: An interpolation filter (50) for interpolating a digital signal (x (n)) includes a cascade of template filters (40), each having an identical template transfer function A (z), which is arranged to receive and filter an input sequence representing the digital signal sampled at an input sampling rate. Ancillary circuitry is coupled to the cascade so as to produce first (y 0 (n)) and second phase outputs (y 1 (n)). A multiplexer (41) is arranged to multiplex the phase outputs in order to generate an output sequence having an output sampling rate equal to twice the input sampling rate.

Abstract translation: 用于内插数字信号（x（n））的内插滤波器（50）包括级联的模板滤波器（40），每个模板滤波器具有相同的模板传递函数A（z），其被布置为接收和过滤表示 以输入采样率采样数字信号。 辅助电路耦合到级联，以产生第一（y 0（n））和第二相输出（y 1（n））。 复用器（41）被布置为多路复用相位输出，以便产生具有等于输入采样率的两倍的输出采样率的输出序列。