Broadband MMIC LNAs for ALMA Band 2+3 With Noise Temperature Below 28 K
Broadband MMIC LNAs for ALMA Band 2+3 With Noise Temperature Below 28 K
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DOI：
10.1109/tmtt.2016.2639018
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发表时间：
2017-01
影响因子：
4.3
通讯作者：
D. Cuadrado-Calle;D. George;G. Fuller;K. Cleary;L. Samoska;P. Kangaslahti;J. Kooi;M. Soria;M. Varonen;R. Lai;X. Mei
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文献类型：
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作者：
D. Cuadrado-Calle;D. George;G. Fuller;K. Cleary;L. Samoska;P. Kangaslahti;J. Kooi;M. Soria;M. Varonen;R. Lai;X. Mei
晶体管技术的最新进展，例如35纳米磷化铟高电子迁移率晶体管（InP HEMT），使得能够开发出具有性能特性的单片微波集成电路（MMIC）低噪声放大器（LNA），这种性能特性在高达116吉赫兹的频率下对超导隧道结（SIS）混频器作为领先的射电天文探测器的主导地位构成了挑战。特别是对于阿塔卡马大型毫米波/亚毫米波阵列（ALMA），这一技术进步使得能够将先前定义的两个频段，即频段2（67 - 90吉赫兹）和频段3（84 - 116吉赫兹），合并为一个单一的超宽带2 + 3（67 - 116吉赫兹）接收器。为此，我们介绍了适用于在这个新的ALMA 2 + 3频段工作的低噪声放大器的设计、实现和特性，以及适用于ALMA频段2的另一组低噪声放大器。这里所报道的最佳低噪声放大器在室温下从72到104吉赫兹显示出低于250开尔文的噪声温度，在20开尔文的低温环境温度下从70到110吉赫兹显示出低于28开尔文的噪声温度。据作者所知，这是在70 - 110吉赫兹频率范围内（通常称为W波段）所公布的最低宽带噪声。
Recent advancements in transistor technology, such as the 35 nm InP HEMT, allow for the development of monolithic microwave integrated circuit (MMIC) low noise amplifiers (LNAs) with performance properties that challenge the hegemony of SIS mixers as leading radio astronomy detectors at frequencies as high as 116 GHz. In particular, for the Atacama Large Millimeter and Submillimeter Array (ALMA), this technical advancement allows the combination of two previously defined bands, 2 (67–90 GHz) and 3 (84–116 GHz), into a single ultra-broadband 2+3 (67–116 GHz) receiver. With this purpose, we present the design, implementation, and characterization of LNAs suitable for operation in this new ALMA band 2+3, and also a different set of LNAs for ALMA band 2. The best LNAs reported here show a noise temperature less than 250 K from 72 to 104 GHz at room temperature, and less than 28 K from 70 to 110 GHz at cryogenic ambient temperature of 20 K. To the best knowledge of the authors, this is the lowest wideband noise ever published in the 70–110 GHz frequency range, typically designated as $W$ -band.