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首页> 外文期刊>Electrical Engineers - Part III: Radio and Communication Engineering, Journal of the Institution of >Radio measurements in the decimetre and centimetre wavebands
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Radio measurements in the decimetre and centimetre wavebands

机译：分米和厘米波段的无线电测量

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摘要

The paper deals with the technique of radio measurements evolved as a necessary aid to the development of decimetre- and centimetre-wave valves, circuits and equipment, and surveys some of the methods applicable in this wide field. It commences with a review of the circuit theory of coaxial and wave-guide transmission lines, followed by a short section on high-frequency oscillators. Succeeding sections deal with the measurement of the fundamental quantities of frequency, power, impedance and voltage. Heterodyne methods of frequency measurement, and coaxial and resonant cavity wavemeters, are described. The design of bolometer and calorimeter circuits is discussed for powers between 1 microwatt and several hundred watts. Measurements of reflection coefficient and Q-factors are included in the section on impedance. The concluding sections deal with derived measurements: receiver sensitivity, aerials and field strength. A standard of receiver sensitivity is established, based on thermal noise voltage, and the design of suitable signal generators and sensitivity measuring equipment is discussed. The section on aerials comprises measurements of polar diagram, gain and impedance. Finally, equipment for the absolute measurement of field strength at centimetre wavelengths is outlined.
机译：本文研究了无线电测量技术，该技术已发展成为十米和厘米波阀门，电路和设备的发展的必要辅助手段，并概述了适用于这一广泛领域的一些方法。首先回顾同轴电缆和波导传输线的电路原理，然后简短介绍高频振荡器。后续部分介绍了频率，功率，阻抗和电压的基本量的测量。描述了频率测量的外差方法，以及同轴和谐振腔波表。讨论了功率计和量热计电路的设计，其功率在1微瓦和几百瓦之间。反射系数和Q因子的测量值包含在阻抗部分中。最后的部分涉及导出的测量：接收器灵敏度，天线和场强。建立了基于热噪声电压的接收机灵敏度标准，并讨论了合适的信号发生器和灵敏度测量设备的设计。天线部分包括极坐标图，增益和阻抗的测量。最后，概述了用于绝对测量厘米波长场强的设备。

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