DOUBLE STEP-EDGE WEAK LINKS INTEGRATED WITH SPIRAL ANTENNA STRUCTURE IN EPITAXIAL TL2CABA2CU2O8 FILMS FOR MILLIMETER-WAVE MIXING

被引：13

作者：

HONG, JP ^{[1
]}

FETTERMAN, HR ^{[1
]}

FORSE, RJ ^{[1
]}

CARDONA, AH ^{[1
]}

机构：

[1] SUPERCOND TECHNOL,SANTA BARBARA,CA 93111

来源：

APPLIED PHYSICS LETTERS | 1993年 / 62卷 / 22期

关键词：

D O I：

10.1063/1.109183

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

High-temperature superconducting mixers have been fabricated from epitaxial films of Tl2CaBa2Cu2O8 utilizing surface double step-edge junctions on LaAlO3 substrates. These mixers were integrated with spiral antenna structure designed for broadband millimeter wave coupling of the radiation into weak links. Under the optimum bias current condition heterodyne mixing of signals at W band (94 GHz) frequencies has been measured, and noise performance operating at V band (60 GHz) has been characterized both at liquid nitrogen and liquid helium temperatures. By using an etching technique, two orders of magnitude improvement in noise performance over the earlier results have been obtained. Strong mixing signals were achieved right up to T(c) (102 K).

引用

页码：2865 / 2865

页数：1

共 8 条

[1]

ALLEN LH, 1989, IEEE T MAGN, V25

[2] ALL A-AXIS ORIENTED YBA2CU3O7-Y-PRBA2CU3O7-Z-YBA2CU3O7-Y JOSEPHSON DEVICES OPERATING AT 80-K [J].