Mixer-Free All Digital Quadrature Demodulation Based on Second-Order Sampling

王飞雪; 郭桂蓉

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Mixer-Free All Digital Quadrature Demodulation Based on Second-Order Sampling

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- Mixer-Free All Digital Quadrature Demodulation Based on Second-Order Sampling
- Acta Electronica Sinica Issue 6, Pages: 118-119(1999)
- 作者机构：
  
  1. 国防科技大学自动目标识别国家重点实验室!长沙
  2. 410073
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN763
- Published：1999
- 稿件说明：
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[1]王飞雪,郭桂蓉.基于二阶采样的免混频全数字化正交解调[J].电子学报,1999(06):118-119.

王飞雪, 郭桂蓉. Mixer-Free All Digital Quadrature Demodulation Based on Second-Order Sampling[J]. Acta Electronica Sinica, 1999, (6): 118-119.
[1]王飞雪,郭桂蓉.基于二阶采样的免混频全数字化正交解调[J].电子学报,1999(06):118-119. DOI：

王飞雪, 郭桂蓉. Mixer-Free All Digital Quadrature Demodulation Based on Second-Order Sampling[J]. Acta Electronica Sinica, 1999, (6): 118-119. DOI：

摘要

提出一种基于二阶采样（Second-ordersampling）技术的带通信号免混频全数字化正交解调方法．该方法直接对中频带通信号进行二阶采样，然后通过线性移相数字滤波器获得正交的两路基带信号，该方法可省略正交混频环节，与基于一阶采样技术的免混频正交解调方法相比，采样率的选择有更大的灵活性．

Abstract

A mixer-free all digital quadrature demodulation method based on second-order sampling is proposed. This method makes esecond-order sampling of a bandpass signal directly

and produces quadrature basebands by passing the samples through linear-phase-shifting filters. Mixers are omitted in this method. Compared with the methods based on first-order sampling the method we proposed here has more freedom in the selection of sampling rates.

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