Title :
IF Gain Bandwidth of a Quasi-Optical NbN Superconducting HEB Mixer
Author :
Cao, Aiqin ; Jiang, L. ; Chen, S.H. ; Antipov, Sergey V. ; Shi, S.C.
Author_Institution :
NAOC, Beijing
Abstract :
In this paper, the intermediate frequency (IF) gain bandwidth of a quasi-optical NbN superconducting hot-electron bolometer (HEB) mixer is investigated at 500 GHz with an IF system incorporating with a frequency down-converting scheme which is able to sweep the IF signal in a frequency range of 0.3-4 GHz. The IF gain bandwidth of the device is measured to be 1.5 GHz when it is biased at a voltage of the minimum noise temperature, and becomes larger when the bias voltage increases.
Keywords :
bolometers; microwave mixers; niobium compounds; submillimetre wave mixers; superconducting microwave devices; superconducting mixers; NbN; frequency 0.3 GHz to 4 GHz; frequency 500 GHz; intermediate frequency gain bandwidth; noise temperature; quasioptical NbN superconducting HEB mixer; quasioptical NbN superconducting hot-electron bolometer; Bandwidth; Bridge circuits; Extraterrestrial measurements; Frequency measurement; Gain measurement; Radio frequency; Semiconductor device measurement; Superconducting device noise; Superconducting devices; Superconducting films; HEB mixer; IF gain bandwidth; Terahertz; quasi-optics;
Conference_Titel :
Microwave and Millimeter Wave Technology, 2007. ICMMT '07. International Conference on
Conference_Location :
Builin
Print_ISBN :
1-4244-1049-5
Electronic_ISBN :
1-4244-1049-5
DOI :
10.1109/ICMMT.2007.381462
