NBN HOT-ELECTRON SUPERCONDUCTING MIXERS FOR 100 GHZ OPERATION

被引：23

作者：

GOLTSMAN, GN ^{[1
]}

KARASIK, BS ^{[1
]}

OKUNEV, OV ^{[1
]}

DZARDANOV, AL ^{[1
]}

GERSHENZON, EM ^{[1
]}

EKSTROM, H ^{[1
]}

JACOBSSON, S ^{[1
]}

KOLLBERG, E ^{[1
]}

机构：

[1] CHALMERS UNIV TECHNOL,S-41296 GOTHENBURG,SWEDEN

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1995年 / 5卷 / 02期

关键词：

D O I：

10.1109/77.403239

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

NbN is a promising superconducting material for hot-electron superconducting mixers with an IF bandwidth larger than 1 GHz. In the 100 GHz frequency range, the following parameters were obtained for 50 Angstrom thick NbN films at 4.2 K: receiver noise temperature (DSB) similar to 1000 K; conversion loss similar to 10 dB; IF bandwidth similar to 1 GHz; and local oscillator power similar to 1 mu W. An increase of the critical current of the NbN film, increased working temperature, and a better mixer matching may allow a broader IF bandwidth up to 2 GHz, reduced conversion losses down to 3-5 dB and a receiver noise temperature (DSB) down to 200-300 K.

引用

页码：3065 / 3068

页数：4

共 7 条

[1]

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[2]

EKSTROM H, 1994, 5TH P INT S SPAC TER, P169

[3]

GERSHENZON EM, 1990, SOV PHYS SUPERCONDUC, V3, P1587

[4] SENSITIVE PICOSECOND NBN DETECTOR FOR RADIATION FROM MILLIMETER WAVELENGTHS TO VISIBLE-LIGHT [J].