论文部分内容阅读
双臂平衡桥式系統获得最佳的相位测量灵敏度和精度。本文討論了两种类似的双臂系統:零拍系統和調制付战波系統。这两种系統在其一个臂里皆需低频調幅;零拍系統还采用了平衡調制器。还討論了由于不同的振幅調制而引起的系統理論的差別,并指出每种系統的优点。这些系統中的标准移相器由滑动短路器和改进了的反射計构成。确立了非接触短路器的技术条件,給出其理論的和实驗的設计資料。进行了誤差分析,使得能够迅速确定任何給定系統的总誤差。計算各种誤差的极限并把它們加在一起从而能求出最大誤差。为使許多誤差减至最小,对設备和調整技术的改进作了討論。研究表明,这些测量系統中无論那一种都能很方便地实現自动化。还給出了在一些市售微波元件与測得的典型的相位数据。
Two-arm balanced bridge system for the best phase measurement sensitivity and accuracy. This article discusses two similar two-arm systems: Zero-Tail System and Modulation Warfare Wave System. Both systems require low frequency amplitude modulation in one of their arms; a balanced modulator is also used in the zero-beat system. The differences in system theory due to different amplitude modulations are also discussed and the advantages of each system are pointed out. The standard phase shifters in these systems consist of a sliding short-circuit and an improved reflectometer. Established the technical conditions of contactless short circuit, given its theoretical and experimental design information. An error analysis was performed that allowed the rapid determination of the total error for any given system. Calculate the limits of various errors and add them together to find the maximum error. In order to minimize many of the errors, improvements in equipment and tuning techniques are discussed. Research shows that it is easy to automate any of these measurement systems. Also given is the typical phase data measured on some commercially available microwave components.