低频噪声参数自动测量系统研制

Research on Automatic Measurement System of Noise Performance

本文介绍了利用CF-920信号分析仪组成的低频噪声自动测量系统.该系统可以实现:(1)En、In的噪声功率谱;(2)噪声系统NF随频率变化曲线;(3)NF图;(4)最佳工作参数等的丰富测量功能.具有精度高、测量速度快、结果可靠等优点.文末给出了测量与理论结果的对比.

In this paper, an antomatic measurement system of noise performence is introduced. It can give: a)The noise power spectrum of En and In. b) Noise figure overall low frequency range. c)NF contows. d)Optimal working parameters. Compare with another measurements, this measurement system have plentiful functions, high speed, high accuracy and reliable results. Finaly, the measuring results of system are compared with the theory.