一个信号的射频频谱可在频域中确定其质量(频谱纯度)。由于普通的外差式分析仪性能的限制,对高稳定振荡器直接测量是很困难的,甚至不可能。本文作者采用频率综合技的新方法来解决频谱分析的问题,其特点是动态范围很宽,分辨很高,离散频率可作程序分析,用对数座标研究频率等。 The RF spectrum of a signal determines its quality (spectral purity) in the frequency domain. Due to the performance limitations of conventional heterodyne analyzers, it is difficult or even impossible to measure directly on a high-stability oscillator. The author adopts the new method of frequency synthesis technology to solve the problem of spectrum analysis, which is characterized by a wide dynamic range, high resolution, discrete frequency for program analysis and logarithmic coordinates study of frequency.