Development of Superconducting Spectroscopic Array Receiver: A Multibeam 2SB SIS Receiver for Millimeter-Wave Radio Astronomy

We have developed a 3×3 multibeam sideband separation superconducting receiver-Superconducting Spectroscopic Array Receiver (SSAR)-for the 85-115 GHz frequency band. The receiver employs 2SB superconductor-insulator-superconductor (SIS) mixers with a typical single sideband (SSB) noise temperature o...

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Bibliographic Details
Published in:IEEE transactions on terahertz science and technology 2012-11, Vol.2 (6), p.593-604
Main Authors: Shan, Wenlei, Yang, Ji, Shi, Shengcai, Yao, Qijun, Zuo, Yingxi, Lin, Zhenhui, Chen, Shanhuai, Zhang, Xuguo, Duan, Wenying, Cao, Aiqing, Li, Sheng, Li, Zhenqiang, Liu, Jie, Zhong, Jiaqiang
Format: Article
Language:English
Subjects:
Heterodyne instruments
imaging arrays
Local oscillators
low noise detectors
Millimeter wave technology
Mixers
Optical mixing
Radio astronomy
Receivers
Superconducting devices
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Summary:We have developed a 3×3 multibeam sideband separation superconducting receiver-Superconducting Spectroscopic Array Receiver (SSAR)-for the 85-115 GHz frequency band. The receiver employs 2SB superconductor-insulator-superconductor (SIS) mixers with a typical single sideband (SSB) noise temperature of 60 K and image rejection ratio above 10 dB over the frequency band. Digital techniques are extensively applied in this receiver system for excellent operational stability and efficiency. They include fast Fourier spectrometers, digital LO and digital bias supplies. In our knowledge this is the first 2SB multibeam millimeter wavelength receiver in the world. This receiver has been successfully put into observation and its considerable enhancement of mapping speed has been demonstrated.
ISSN:2156-342X
2156-3446
DOI:10.1109/TTHZ.2012.2213818