Asia-Pacific Microwave Conference (APMC)

A 220 GHz low noise superconducting receiver with wide instantaneous operating bandwidth

Chih-Chiang Han, Ming-Jye Wang, Tse-Jun Chen, Wei-Chun Lu, Edward Tong

Published Dec 1, 2012• 1 citation

Abstract

A 220 GHz mixer chip based on a 3-junction series distributed superconducting mixer has been developed. This mixer employs a design, which minimizes the output capacitances, such that it can offer a wide instantaneous bandwidth of up to 12 GHz. We have incorporated this mixer into a receiver package and a dedicated automatic test bench has been developed to characterize its performance. The receiver demonstrates ultra low noise temperature, as low as 32 K, or 3 hν/k. The measured noise temperature remains below 50 K beyond 10 GHz IF.

DOI: 10.1109/apmc.2012.6421620

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