SIS flight mixers for band 2 of the HIFI instrument of the Herschel Space Observatory

Infrared and Millimeter Waves, Conference Digest of the 2004 Joint 29th International Conference on 2004 and 12th International Conference on Terahertz Electronics, 2004. Pub Date : 2004-01-01 DOI:10.1109/ICIMW.2004.1422151

M. Justen, M. Schultz, T. Tils, R. Teipen, S. Glenz, P. Putz, C. Honingh, K. Jacobs

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引用次数: 7

Abstract

We present the recently assembled flight models of the SIS mixer units (MU) for band 2 of the HIFI instrument for the Herschel satellite observatory. Design, device fabrication, most of the mixer hardware fabrication, space-qualification, and final assembly are all realized at KOSMA. Thanks to the modular design RF- and IF-performance of different parts of the MU are tested separately before final assembly. Latest test results show a noise temperature between 80 K in the band centre towards 220 K at the upper band edge at 2.8 K operating temperature. The mixer IF-ripple is below 2 dB over a 4-8 GHz bandwidth including the bias-T which provides a very high EMI and ESD protection. The mixer performance and design are discussed under the aspect of the careful trade off between performance, reliability, timely delivery, and resources.

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赫歇尔空间天文台HIFI仪器波段2的SIS飞行混频器

我们介绍了最近组装的赫歇尔卫星天文台HIFI仪器2波段SIS混频器单元(MU)的飞行模型。设计、设备制造、大部分混频器硬件制造、空间鉴定和最终组装都在KOSMA完成。由于模块化设计，MU的不同部分的RF和if性能在最终组装之前分别进行测试。最新的测试结果表明，在2.8 K的工作温度下，噪声温度在带中心80 K到带上边缘220 K之间。混频器的中频纹波在4-8 GHz带宽范围内低于2 dB，包括提供非常高的EMI和ESD保护的偏置t。从性能、可靠性、及时交货和资源之间的权衡的角度，讨论了混合器的性能和设计。

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Infrared and Millimeter Waves, Conference Digest of the 2004 Joint 29th International Conference on 2004 and 12th International Conference on Terahertz Electronics, 2004.

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