電氣火花による糎波の發振について(I)(物理學)

概要

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Electric sparks between aluminium electrodes have been studied as oscillators in microwave regions. The electrodes were usually constructed with three to five aluminium discs (diameter≈1cm), separated by thin mica rings (about 0.1mm thick). A potential of about 2000 volts was applied to the electrodes through series resistances (100〜500kl). With suitable resonance circuit, for instance dipoles, the oscillators could produce electromagnetic waves of any wavelength longer than about 8 centimeters. Lecher wires or cavity-wavemeters with crystal detectors were used to analyse the e.m. waves. The mean output power was of the order of one milliwatt, so we can use them as test oscillators in this region. As the oscillator can produce a very wide range of microwaves at once, we can make use of them, in conjunction with cavity-wavemeters, in the study of frequency characteristics of some microwave circuits (for example, resonant circuits of magnetrons).
宇宙航空研究開発機構の論文
1949-09-20