Title :
Noise temperature, gain bandwidth and local oscillator power of NbN phonon-cooled HEB mixer at terahertz frequencies
Author :
Vachtomin, Yu.B. ; Antipov, S.V. ; Kaurova, N.S. ; Maslennikov, S.N. ; Smirnov, K.V. ; Polyakov, S.L. ; Svechnikov, S.I. ; Grishina, E.V. ; Voronov, B.M. ; Goltsman, G.N.
fDate :
27 Sept.-1 Oct. 2004
Abstract :
We present the performances of HEB mixers based on 3.5 nm thick NbN film integrated with log-periodic spiral antenna. The double side-band receiver noise temperature values are 1300 K and 3100 K at 2.5 THz and at 3.8 THz, respectively. The gain bandwidth of the mixer is 4.2 GHz and the noise bandwidth is 5 GHz. The local oscillator power is 1-3 μW for mixers with different active area.
Keywords :
bolometers; hot carriers; niobium compounds; phonons; scanning electron microscopy; spiral antennas; submillimetre wave mixers; submillimetre wave oscillators; submillimetre wave receivers; superconducting thin films; 1 to 3 muW; 1300 K; 2.5 THz; 3.5 nm; 3.8 THz; 3100 K; 4.2 GHz; 5 GHz; NbN; NbN film; double side band receiver noise temperature; gain bandwidth; log periodic spiral antenna; noise bandwidth; oscillator power; phonon cooled hot electron bolometers mixer; Bandwidth; Extraterrestrial measurements; Frequency measurement; Local oscillators; Noise measurement; Phonons; Spirals; Superconducting device noise; Superconducting films; Temperature measurement;
Conference_Titel :
Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on
Print_ISBN :
0-7803-8490-3
DOI :
10.1109/ICIMW.2004.1422092
