High-Temperature Superconducting Delay Lines and Filters on Sapphire and Thinned LaAlO3 Substrates

被引：32

作者：

Liang, Guo C. ^{[1
]}

Withers, Richard S. ^{[2
]}

Cole, Brady F. ^{[1
]}

Garrison, Stephen M. ^{[1
]}

Johansson, Marie E. ^{[1
]}

Ruby, Ward S. ^{[1
]}

Lyons, W. Gregory ^{[3
]}

机构：

[1] Conductus Inc, Sunnyvale, CA 94086 USA

[2] Conductus Inc, Analog Syst Dev, Sunnyvale, CA 94086 USA

[3] MIT, Lincoln Lab, Lexington, MA 02173 USA

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1993年 / 3卷 / 03期

关键词：

D O I：

10.1109/77.234838

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：

The very low microwave surface resistance of HTS superconducting thin films allows the realization of microwave devices with performance superior to those made by conventional technology. Superconducting delay lines, for example, have very low propagation loss and dispersion. We present long, low-loss, superconducting delay lines on both thinned LaAlO3 and sapphire substrates. Delay lines with 27- and 44-ns delay have been made, for the first time, on 5-cm-diameter 254- and 127-mu m-thick LaAlO3, substrates, respectively. The insertion losses at 77 K and 6 GHz are 6 and 16 dB, respectively. Delay lines with 9-ns delay have, for the first time, been produced on m-plane sapphire substrates and demonstrate, at 77 K, an insertion loss of 1.0 dB at 6 GHz. We also report a 2.5%-bandwidth 10-GHz four pole edge-coupled bandpass filter on M-plane sapphire substrates. The filter has minimum insertion loss of less than 0.5 dB at 9.75 GHz and 71 K.

引用

页码：3037 / 3042

页数：6

共 12 条

[1] LARGE-AREA YBA2CU3O7-DELTA THIN-FILMS ON SAPPHIRE FOR MICROWAVE APPLICATIONS [J].