计算机与数字工程2016，Vol.44Issue(11)：2266-2270,5.DOI:10.3969/j.issn.1672-9722.2016.11.035
基于高精度射频信号的调频广播研究❋
FM Broadcast Based on High Precision Radio Frequency Signals
摘要
Abstract
For FM radio spectrum has problems of interference-prone in signal output process,direct digital frequency synthesizer is used to design a high precision RF signal source,a digital frequency synthesizer,external FET and Butter-worth filters are used to design FM radio control modules,multiplier module and filter module.Test results show that the source system output bandwidth is up to 370MHz,the maximum amplitude of the voltage interference suppression effect can be achieved 50dBc,when the minimum frequency 100MHz band digital frequency synthesizer output signal gain after smoot-hing,external noise and interference harmonic signal interference suppression is 35dB,frequency stability and accuracy of the FM radio signal source are high.关键词
调频广播/高精度射频/相位累加器/直接数字频率合成/信息增益Key words
FM radio/high-precision radio frequency/phase accumulator/direct digital frequency synthesis/informa-tion gain分类
信息技术与安全科学引用本文复制引用
范宁洁..基于高精度射频信号的调频广播研究❋[J].计算机与数字工程,2016,44(11):2266-2270,5.基金项目
国家自然科学基金资助项目(编号:4053021)资助。 （编号:4053021）
