摘要
介绍了一种基于声表面波技术的扩频信号解扩解调模块的工作原理、模块设计和测试结果。与数字相关器解扩相比,利用声表面波匹配滤波器解扩具有高处理速度和大处理带宽的特点,特别是在实时处理中具有绝对优势。同时,模块采用限幅放大技术可实现信号的大动态范围和高灵敏度接收。
The operating principle, design and test results of the de-spreading and demodulation module for spread spectrum signals based on SAW technology have been introduced in this paper. The de-spreading technique based on SAW matched filter has the advantages of high-speed and wide bandwidth over the digital correlator; espe- cially it has overwhelming superiority over its counterpart in the real-time de-spreading process. Meanwhile, the wide dynamic range and high sensitivity receive of signals can be realized since the limiting amplification technique has been used in the proposed module.
出处
《压电与声光》
CSCD
北大核心
2013年第3期309-311,317,共4页
Piezoelectrics & Acoustooptics
关键词
声表面波
解扩
解调
限幅放大
SAW
de-spread
demodulation
limiting amplification
