Low-noise integrated balanced SIS mixer for 787–950 GHz
Low-noise integrated balanced SIS mixer for 787–950 GHz
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适用于 787–950 GHz 的低噪声集成平衡 SIS 混频器
DOI：
10.1088/0953-2048/30/2/024001
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发表时间：
2017
影响因子：
3.6
通讯作者：
Y. Uzawa
中科院分区：
文献类型：
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作者：
Y. Fujii;T. Kojima;Álvaro González;S. Asayama;M. Kroug;K. Kaneko;H. Ogawa;Y. Uzawa
我们开发了一种低噪声，紧凑，平衡的超导体-绝缘体-超导体（SIS）混频器，工作在787-950 GHz的射频范围。设计了一个波导混频器模块，用于集成射频（RF）90°混合耦合器、两个相同的SIS混频器芯片、偏置T形管和中频功率合成器等所有关键部件。射频波导90°混合耦合器由具有宽槽的分支线组成，通过数值模拟优化，以便于制造。平衡混频器被安装在一个盒式接收机中，最初是为阿塔卡马大毫米/亚毫米阵列波段10（787-950 GHz）开发的。接收机在大部分频带内的双边带噪声温度约为200 K，并且没有对接收机前面的损耗进行任何校正。在测量的频率范围内，本振噪声抑制比估计为15 dB以上。
We developed a low-noise, compact, balanced superconductor–insulator–superconductor (SIS) mixer, operating in the 787–950 GHz radio frequency range. A waveguide mixer block was designed to integrate all the key components, such as a radio frequency (RF) 90° hybrid coupler, two identical SIS mixer chips, bias-tees, and an intermediate frequency power-combiner. The RF waveguide 90° hybrid coupler consists of branch lines with wide slots optimized by numerical simulation, for ease of fabrication. The balanced mixer was installed into a cartridge type receiver, originally developed for the Atacama Large Millimeter/submillimeter Array Band 10 (787–950 GHz). The receiver demonstrated double sideband noise temperatures of approximately 200 K for most of the band, without any correction for loss in front of the receiver. The local oscillator noise rejection ratio was estimated to be more than 15 dB within the measured frequency range.
具有波导正交混合耦合器的 400 - 500 GHz 平衡 SIS 混频器
DOI：
--
发表时间：
2008
期刊：
International Journal of Infrared and Millimeter Waves (in press)
影响因子：
--
作者：
Y. Serizawa;Y. Sekirnoto;et. al.
通讯作者：
et. al.
用于 0.78-0.95THz 频段的三量子灵敏度超导-绝缘体-超导混频器
DOI：
--
发表时间：
2009
期刊：
Applied Physics Express 2
影响因子：
--
作者：
Takafumi Kojima;Matthias Kroug;Masanori Takeda;Yoshinori Uzawa;Wenlei Shan;Yasunori Fujii;Zhen Wang;Hideo Ogawa
通讯作者：
Hideo Ogawa