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本文综述了雪崩源泵浦边带噪声对参量放大器噪声温度恶化的大信号效应和小信号效应。提出了克服噪声恶化的措施。介绍了国产雪崩源作制冷参量放大器泵浦的实验情况,结论表明,国产的雪崩源用作非冷参量放大器和制冷参量放大器的泵源大有前途。
This paper summarizes the large signal effect and small signal effect of the sideband noise of avalanche source on the noise temperature of the parametric amplifier. Proposed to overcome the deterioration of noise measures. The experimental results of a domestic avalanche source as a pump for pumping parametric amplifier are introduced. The conclusion shows that the domestic avalanche source can be used as pump source for non-cooled parametric amplifier and refrigeration parametric amplifier.