摘要
该文简要介绍了一种基于DDS芯片DAC34H84的短波数字BPSK射频信号源,该数字信号源可以产生2~30 MHz内的M序列码、巴克码、自定义二进制码的BPSK调制信号。该文详细描述了BPSK调制原理和DDS芯片DAC34H84的技术特点,并阐述了该数字信号源FPGA＋DSP架构的设计原理和具体编程实现方式,最后给出了部分该信号源的实际测试输出结果。该信号源具有信号输出形式设置灵活、性能优越等特点,可广泛用于基于软件无线电体制的电离层短波信道探测设备中。
The article introduces a shortwave digital BPSK RF signal generator made by DAC34H84 DDS chip, which can generate BPSK RF signal modulate by M serial code, Barker code, binary code in 2-30MHz frequency range. This article describes the BPSK theory and technique feature of the DAC 34H 84 chip, and describes the design principle and implementing program method, and shows some output results graphically. This generator specializes at agility operation and predominant performance. It can be used in ionoshperic shortwave channel detectiondevice based on software defined radio system.
出处
《科技资讯》
2015年第34期3-5,7,共4页
Science & Technology Information
