Millimeter-wave sensitivity of YBCO grain boundary Josephson junctions coupled with coplanar waveguide-fed slot dipole antennas

被引:9
|
作者
Nakajima, K [1 ]
Ebisawa, N
Sato, H
Chen, J
Yamashita, T
Sawaya, Y
机构
[1] Hirosaki Univ, Fac Sci & Engn, Hirosaki, Aomori 0368561, Japan
[2] Tohoku Univ, Elect Commun Res Inst, Sendai, Miyagi 9808577, Japan
[3] Tohoku Univ, Fac Engn, Sendai, Miyagi 9808579, Japan
[4] Nanjing Univ, Dept Elect Sci & Engn, Nanjing 210093, Peoples R China
关键词
finite difference time domain methods; high-temperature superconductors; Josephson junctions; millimeter wave antennas; millimeter wave detectors;
D O I
10.1109/TASC.2005.849915
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
Improvements in the coupling efficiency of millimeter wave quasioptically introduced to high-T-C Josephson junction detectors have been studied. Both increasing of junction resistance and implementation of a lower impedance antenna are required to improve the efficiency. We designed a coplanar waveguide feed slot dipole antenna as a low impedance antenna combined with the Josephson junction detectors. Improvements in the coupling efficiency due to decreasing of antenna impedance have been demonstrated and compared with numerically obtained results by the finite difference time domain method on the slot dipole antenna.
引用
收藏
页码:549 / 551
页数:3
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