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Chirp—UWB信号产生系统性能分析

Performance Analysis of Chirp—UWB Signal Generation System
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摘要 通过比较由直接数字频率合成器与锁相环组成的不同形式的Chirp—UWB信号产生系统的特点,包括环外混频、环内插入混频、激励三种,最终确定了DSS激励PLL的方式,并详细介绍了这种方式的工作原理,重点介绍了整个系统的相位噪声和杂散。同时在MATLAB/Simulink环境中建立整个系统的动态仿真模型来进行仿真,分析系统的合理性、正确性以及其中的相位噪声和杂散等重要性能指标,为提高整个系统的性能做好理论研究。 Various Chirp-UWB signal generation systems composed of DDS and PLL are compared.Then the work principle and the performance of these generation systems are given.Also,the phase noise and the stray of the Chirp—UWB signal generation system in DDS-driven PLL are described.The dynamic simulation model with MATLAB/Simulink proves the correctness and feasibility of the system,and also provides a theoretical foundation for improving the system performance.
作者 刘露 林基明
出处 《通信技术》 2011年第6期27-29,共3页 Communications Technology
基金 国家自然科学基金资助项目(批准号:60962001) 广西科学基金(桂科自0991018Z)
关键词 Chirp—UWB信号 直接数字频率合成器 锁相环 SIMULINK Chirp—UWB signal DDS PLL Simulink
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