基于相位谱测量的脉冲调制信号频域测量方法

发布时间：2018-04-11 13:37

本文选题：脉冲调制射频信号 + 非线性矢量网络分析仪　；参考：《仪器仪表学报》2014年11期

【摘要】：传统的脉冲调制射频(Pulsed RF)信号普遍采用时域、包络域测量手段进行测试。本文则提出了一种全新的频域测量方法:通过在非线性网络分析仪平台上测量脉冲调制信号的幅度谱和相位谱,经过频谱缝合和外推等处理获得其完整的频谱信息,从而重构出时域波形和包络。实验表明,该频域测量方法的相位谱测量准确度能够达到±1°,通过频谱外推能够获得平滑的时域包络。和传统的时域、包络域测量手段相比,该方法继承了频域测量高动态范围的优势,能够获得更好的测量精度。
[Abstract]:The traditional pulse modulated radio frequency (RF) signals are generally measured in time domain and envelope domain.In this paper, a new frequency domain measurement method is proposed: the amplitude spectrum and phase spectrum of pulse modulation signal are measured on the platform of nonlinear network analyzer, and the complete spectrum information is obtained by spectrum suture and extrapolation.In order to reconstruct the time domain waveform and envelope.The experimental results show that the phase spectrum measurement accuracy of this method can reach 卤1 掳, and the smooth time domain envelope can be obtained by spectrum extrapolation.Compared with the traditional measurement methods in time domain and envelope domain, this method inherits the advantage of high dynamic range in frequency domain and can obtain better measurement accuracy.
【作者单位】：中国计量科学研究院信息与电子计量科学和测量技术研究所;
【基金】：国家科技支撑计划项目(2014BAK02B04) 中国博士后科学基金资助项目(2014M560106)
【分类号】：TN911.3

【参考文献】