| 摘要: |
| 频谱监测射频接收机的输出频谱质量是频谱监测系统获得辐射源正确的频谱信息和
内涵信息的关键。介绍了一种应用于频谱监测的宽带射频接收机架构，分析了影响该架构射
频接收机输出频谱纯度的主要因素即相位噪声的影响机理，并给出了改善相位
噪声的方法。相位噪声改善前后对解调性能的比对表明，解调误码率降低了一个数量级。 |
| 关键词: 频谱监测 射频接收机 频谱纯度 相位噪声 解调误码率 |
| DOI： |
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| 基金项目: |
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| Analysis of factors effecting the frequency spectrum purity of RF receiver for frequency spectrum monitoring |
| QI Jia-guo |
| () |
| Abstract: |
| The output spectrum quality of the RF spectrum monitoring rec
eiver is the key to obtain correct spectrum information and relationship inform
ation from spectrum monitoring system. A framework of wideband RF rec
eiver used for spectrum monitoring is introduced.The mechanism of
the main factor or the phase noise affecting its output spectrum purification
is analysed.Furt
hermore，the method of reducing phase noise is presented. Comparison of demodu
lation performance before and after reducing phase noise shows that the demodula
tion BER is decreased by one order of magnitude after reducing phase noise. |
| Key words: frequency spectrum monitoring RF receiver purity of frequency spectrum phase
noise demodulation BER |
《电讯技术》编辑部 