公开(公告)号：KR101136969B1

公开(公告)日：2012-04-19

申请号：KR20100139495

申请日：2010-12-30

Applicant: KOREA ELECTRONICS TECHNOLOGY

Inventor： CHO SARM GOO ,  LEE WOO SUNG ,  KIM DONG SU

IPC: H03M3/02

CPC classification number: H03M3/39 ,  H03M3/32 ,  H03M2201/196 ,  H03M2201/61

Abstract: PURPOSE: A bandpass modulator is provided to increase stability, the size of an output signal, and coding efficiency by reducing the signal accumulation of a resonator. CONSTITUTION: A bandpass delta-sigma modulator(200) comprises first to fourth calculation units(202,204,206,208), first and second resonant units(212,214), first and second quantization units(222,224), a shifter(232), and a delay unit(242). The first and the second resonant units are parallely connected. The first calculation unit, the first resonant unit, and a first quantization unit are included in a first stage. The second calculation unit, the second resonant unit, and the second quantization unit are included in a second stage. The first calculation unit is connected to the input of the first resonant unit. The first resonant unit passes through a signal having a specific frequency band from an output signal of the first calculation unit.

Abstract translation: 目的：提供一种带通调制器，通过减少谐振器的信号累积来提高稳定性，输出信号的大小和编码效率。 构成：带通Δ-Σ调制器（200）包括第一至第四计算单元（202,204,206,208），第一和第二谐振单元（212,214），第一和第二量化单元（222,224），移位器（232）和延迟单元 242）。 第一和第二谐振单元并联连接。 第一计算单元，第一谐振单元和第一量化单元包括在第一级中。 第二计算单元，第二谐振单元和第二量化单元包括在第二阶段中。 第一计算单元连接到第一谐振单元的输入端。 第一谐振单元从第一计算单元的输出信号通过具有特定频带的信号。