Low noise radio receivers on Torun 32m antenna

E. Pazderski
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引用次数: 1

Abstract

Obliged to keep the attractiveness of the radio telescope to it's users, one need to improve the sensitivity of receivers all possible ways. Reducing receiver noise by applying newest low noise amplifiers, reducing ambient temperature of the cryogenic amplifiers by improving isolation in the dewar, using wider frequency bands, using high dynamic range intermediate frequency amplifiers and other means for frequency bands full of annoying interferences — all these treatments belong to the art of making the best receivers. Radio receivers need to be ready to be used with many back-ends, like VLBI terminals, spectrometers, pulsar machine, polarimeters, so they need to have many additional functionalities built-in, like switchable stable noise sources, phase calibration sources, switchable 0/180 degrees local oscillator signals and more. Review of the Torun 32 m antenna receivers will discuss the above goals in detail.
托伦32米天线上的低噪声无线电接收机
为了保持射电望远镜对用户的吸引力,人们需要尽一切可能提高接收器的灵敏度。采用最新的低噪声放大器来降低接收机噪声,通过提高杜瓦瓶的隔离度来降低低温放大器的环境温度,使用更宽的频段,在充满恼人干扰的频段使用高动态范围中频放大器等方法,所有这些处理都属于制造最佳接收机的艺术。无线电接收机需要准备好与许多后端一起使用,如VLBI终端,光谱仪,脉冲星机,偏振计,因此它们需要内置许多额外的功能,如可切换的稳定噪声源,相位校准源,可切换的0/180度本地振荡器信号等等。回顾Torun 32米天线接收器将详细讨论上述目标。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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