A low-noise double-dipole antenna SIS mixer at 1 THz

A low-noise double-dipole antenna SIS mixer at 1 THz

A quasi-optical mixer employing a Nb/Al/AlO x /Nb twin-SIS junction with a NbTiN/SiO 2/Al microstrip coupling circuit is tested at 800–1000 GHz. The receiver noise temperature T RX=250 K (DSB) is measured at 935 GHz for the bath temperature 2 K at IF=1.5 GHz; T RX remains below 350 K within the freq...

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Veröffentlicht in:Physica. C, Superconductivity Superconductivity, 2002-08, Vol.372, p.374-377
Hauptverfasser: Shitov, S.V, Jackson, B.D, Baryshev, A.M, Markov, A.V, Iosad, N.N, Gao, J.-R, Klapwijk, T.M
Format: Artikel
Sprache:eng
Schlagworte:
SIS junction
SIS mixer
Terahertz band
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Zusammenfassung:A quasi-optical mixer employing a Nb/Al/AlO x /Nb twin-SIS junction with a NbTiN/SiO 2/Al microstrip coupling circuit is tested at 800–1000 GHz. The receiver noise temperature T RX=250 K (DSB) is measured at 935 GHz for the bath temperature 2 K at IF=1.5 GHz; T RX remains below 350 K within the frequency range 850–1000 GHz. The integrated lens-antenna demonstrated good beam symmetry with sidelobes below −16 dB.
ISSN:0921-4534
1873-2143
DOI:10.1016/S0921-4534(02)00703-7