Performance of the flight model HIFI band 3 and 4 mixer units
Performance of the flight model HIFI band 3 and 4 mixer units
复制标题
飞行模型 HIFI 频段 3 和 4 混音器单元的性能
DOI：
10.1117/12.673870
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发表时间：
2006
影响因子：
1.5
通讯作者：
T. M. Klapwijk
中科院分区：
文献类型：
--
作者：
G. de Lange;B. Jackson;M. Jochemsen;W. Laauwen;L. de Jong;M. Kroug;T. Zijlstra;T. M. Klapwijk
本文介绍了Herschel/HIFI仪器的三、四波段飞行模型混频单元的性能。这些单位是HIFI焦平面股的一部分。频带3和4混频器单元覆盖800-960 GHz和960-1120 GHz频率范围，并具有4-8 GHz IF频带。混频器在HIFI设置范围内的灵敏度非常出色，是迄今为止报道的最好的。HIFI FPU环境中的DSB接收机噪声性能范围从800 GHz时的150 K到1120 GHz时的350 K。与地面设施相比，这种灵敏度和大气衰减的缺乏将减少在这个频率范围内进行天文观测所需的观测时间至少两个数量级。
We describe the performance of the Band 3 and Band 4 Flight Model mixer units for Herschel/HIFI Instrument. These units are part of the Focal Plane Unit of HIFI. The band 3 and 4 mixer units cover the 800-960 GHz and 960-1120 GHz frequency range and have a 4-8 GHz IF frequency band. The sensitivities of the mixers within the HIFI setting are excellent and are the best reported to date. The DSB receiver noise performance in the HIFI FPU environment ranges from 150 K at 800 GHz to 350 K at 1120 GHz. This sensitivity and the absence of atmospheric attenuation will reduce the necessary observation time for astronomical observations in this frequency range by at least two orders of magnitude compared to ground based facilities.