IF Gain Bandwidth of a Quasi-Optical NbN Superconducting HEB Mixer

A. Cao, L. Jiang, S.H. Chen, S. Antipov, S. Shi
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Abstract

In this paper, the intermediate frequency (IF) gain bandwidth of a quasi-optical NbN superconducting hot-electron bolometer (HEB) mixer is investigated at 500 GHz with an IF system incorporating with a frequency down-converting scheme which is able to sweep the IF signal in a frequency range of 0.3-4 GHz. The IF gain bandwidth of the device is measured to be 1.5 GHz when it is biased at a voltage of the minimum noise temperature, and becomes larger when the bias voltage increases.
准光学NbN超导HEB混频器的中频增益带宽
本文研究了准光学NbN超导热电子辐射热计混频器在500 GHz下的中频增益带宽,该中频系统采用了频率降频方案,能够在0.3-4 GHz的频率范围内扫描中频信号。当器件偏置在最小噪声温度电压下时,测量到器件的中频增益带宽为1.5 GHz,当偏置电压增大时,器件的中频增益带宽增大。
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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