| 一种适用于电视频段的接收系统 |
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| 引用本文： | 郑争兵.一种适用于电视频段的接收系统[J].电视技术,2011,35(19):62-64,108. |
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| 作者姓名： | 郑争兵 |
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| 作者单位： | 陕西理工学院电信工程系,陕西汉中,723003 |
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| 基金项目： | 陕西理工学院校级科研项目(SLGQD0738) |
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| 摘 要： | 提出了一种基于软件无线电思想的硬件接收系统.该系统主要由射频电视信号接收高频头、模拟中频处理单元、宽带A/D转换单元、数字下变频器和高速信号处理器组成.针对电视信号的特点,给出了模拟中频增益分配方案、中频采样方案和数字下变频方案.经过现场测试,接收系统能够检测到正在广播的电视信号并且具有传输电视信号的能力.该系统硬件结...
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| 关 键 词： | 数字下变频 中频增益 带通采样 软件无线电 |
Receiving System Adapted to TV Frequency Band |
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| ZHENG Zhengbing.Receiving System Adapted to TV Frequency Band[J].Tv Engineering,2011,35(19):62-64,108. |
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| Authors: | ZHENG Zhengbing |
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| Affiliation: | ZHENG Zhengbing(Department of Electronic Engineering,Shaanxi University of Technology,Shaanxi Hanzhong 723003,China) |
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| Abstract: | A receiving system based on software radio is proposed in this paper.The system is mainly composed of the RF TV tuner,analog IF processing unit,broadband A/D conversion unit,digital down converter and high-speed signal processors.According to the characteristics of television signals,the analog IF gain allocation scheme,IF sampling frequency scheme and digital down convert scheme are given.After the field testing of the receiving system is done,it can detect television broadcast signals and has the ability ... |
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| Keywords: | digital down converter IF gain band-pass sampling software radio |
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