Ferrite-superconductor devices for advanced microwave applications

被引:59
作者
Dionne, GF
Oates, DE
Temme, DH
Weiss, JA
机构
[1] Lincoln Laboratory, Massachusetts Institute of Technology, Lexington
关键词
D O I
10.1109/22.508241
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
Microwave devices comprising magnetized ferrite in contact with superconductor circuits designed to eliminate magnetic field penetration of the superconductor have demonstrated phase shift without significant conduction losses. The device structures are adaptable to low- or high-T-C superconductors. A nonoptimized design of a ferrite phase shifter that employs niobium or YBCO meanderlines has produced over 1000 degrees of differential phase shift with a figure of merit exceeding 1000 degrees/dB at X band, By combining superconductor meanderline sections with alternating T junctions on a ferrite substrate in a configuration with three-fold symmetry, a low-loss three-port switching circulator has been demonstrated.
引用
收藏
页码:1361 / 1368
页数:8
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