SUPERCONDUCTING BOLOMETRIC MIXERS

被引:10
作者
EKSTROM, H
KARASIK, B
KOLLBERG, E
YNGVESSON, SK
机构
[1] The Chalmers University of Technology, S-412 96, Goteborg Sweden
[2] The Moscow State Pedagogical University, Moscow
[3] The University of Massachusetts, Amherst, MA
来源
IEEE MICROWAVE AND GUIDED WAVE LETTERS | 1994年 / 4卷 / 07期
关键词
D O I
10.1109/75.298257
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
Mixing at 20 GHz in niobium superconducting thin-film strips in the resistive state is studied. Experiments give evidence that electron-heating is the main cause of the nonlinear phenomena. The requirements on the mode of operation and on the film parameters for small conversion loss and the possibility of conversion gain are discussed. Measurements indicate a conversion loss between 1-8 dB and a DSB mixer noise temperature between 100 and 450 K at 20 GHz. The device output noise temperature at the mixer operating point can be as low as 30-40 K. A simple theory that is based on the assumption that the small signal resistance is linearly dependent on power is presented. This type of mixer is considered very promising for use in low-noise heterodyne receivers at THz frequencies.
引用
收藏
页码:253 / 255
页数:3
相关论文
共 4 条
[1]  
Gershenzon E.M., Et al., Millimeter and Submillimeter Range Mixer Based on Electronic Heating of Superconducting Films in the Resistive State, 3, pp. 1582-1597
[2]  
Gol'tsman G.N., Et al., Sensitive Picosecond NbN Detector for Radiation from Millimeter Wavelengths to Visible Light, Supercond. Science and Technology, 4, (1991)
[3]  
Arams F., Et al., Millimeter Mixing and Detection in Bulk InSb, Proc. IEEE, 54, pp. 308-318, (1966)
[4]  
Ekstrom H., Karasik B., Kollberg E., Yngvesson K.S., A Microwave Mixer Using Superconducting Nb Films in the Resistive State, 1993 Int. Semicond. Dev. Res. Symp, pp. 475-478, (1993)