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引言微波扫频测量技术在我国正得到日益广泛的应用。但是,在微波管的研制和生产中,目前基本上还只是把它应用在“冷测”当中,而在微波放大管幅频特性的“热测”中,即在增益和输出功率的频率特性测量中,基本上还是在单频下逐点进行的。另外,对于单频下微波放大管的输入输出特性,即输出功率、增益与输入功率的关系,也是逐点改变输入功率进行测量的。这样,不仅速度慢、工作量大,测试过程中外界条件容易发生变化,而且测试点不连续,测量结果不直观,因此,对于保证微波管在宽频带内的性能以及通过调整获得最佳性能来说,这种测量方法是无法满足要求的。
Introduction Microwave swept-frequency measurement technology in our country is being increasingly widely used. However, in the development and production of microwave tubes, it is basically only applied to “cold measurement”, and in the microwave amplification tube amplitude-frequency characteristics of the “thermal measurement”, that is, in the gain and output power frequency characteristics In the measurement, it is basically carried out point by point under single frequency. In addition, the single-frequency microwave amplification tube input and output characteristics, that is, output power, gain and input power, but also point by point to change the input power measurement. In this way, not only the speed is slow, the workload is heavy, the external conditions are prone to change during the test, and the test points are not continuous, and the measurement result is not intuitive. Therefore, to ensure the performance of the microwave tube in a wide frequency band and obtain the best performance through adjustment Said that this measurement method is unable to meet the requirements.