A 490 GHz planar circuit balanced Nb-Al2O3-Nb quasiparticle mixer for radio astronomy: Application to quantitative local oscillator noise determination
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1976 ◽
Vol 24
(5)
◽
pp. 254-257
◽
1985 ◽
Vol 3
(5)
◽
pp. 1110-1122
◽
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