ISSTT Proceedings

ISSTT Proceedings

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Low-noise micromachined SIS mixers for millimeter-wave imaging arrays

Authors:
Gert de Lange, Brian R. Jacobson, Arifur Rahman, Erik Duerr, Qing Hu
Abstract:
Heterodyne mixers with a micromachined horn antenna and a SIS tunnel junction as mixing element are tested in the 75-115 GHz and 180-220 GHz frequency range. The mixer peiformance is optimized by using a backing plane behind the dipole antenna to tune out the capacitance of the tunnel junction. For the W-band mixer a lowest DSB receiver noise temperature of 30 ± 3 K is measured at 106 GHz with a 3-dB bandwidth of 8 GHz. Preliminary measurements of the 180-220 GHz mixer yield a 109 K DSB noise temperature at 204 GHz. The design of a micromachined 190 GHz SIS focal plane array is described.
Categories:
SIS Mixers
Year:
1996
Session:
1
Full-text:
Download a PDF of this paper.
Page Number(s):
29-36