| 摘要: |
| 介绍了一种数字中频接收机的设计，对接收机的各个组成部分进行了原理分析和推导，包括可变带宽滤波器、ADC、基于多相滤波器的数字正交变换、抽取滤波器设计、基带信号处理单元设计，得出样机的各样性能参数。 |
| 关键词: 数字中频接收机 多相滤波器 数字正交变换 抽取滤波器 软件无线电 |
| DOI：10.3969/j.issn.1001-893X. |
| Received:July 05, 2005Revised:October 09, 2005 |
| 基金项目: |
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| Design and Realization of a Digital-Intermediate Frequency Receiver |
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| Abstract: |
| An approach for designing digital-intermediate frequency(IF) receiver is introduced,the principle analysis and deduction of all parts of the receiver are performed including design of available-band filter,Analog-to-Digital Converter(ADC),digital orthogonal transforms based on digital polyphase filter,decimation filter,baseband signal processing unit. Finally parameters of the receiver are obtained. |
| Key words: digital-intermediate frequency receiver,polyphase filter,digital orthogonal transform,decimation filter,software defined radio(SDR) |
