Superconducting Transmission Lines with Pulse-Controlled Dispersion

被引：0

作者：

Shitov, S. V. ^{[1
,2
]}

Yahya, A. I. ^{[1
]}

Ustinov, A. V. ^{[1
,3
]}

机构：

[1] Natl Univ Sci & Technol MISiS MUST MISiS, Moscow 119049, Russia

[2] Kotelnikov Inst Radio Engn & Elect IREE, Moscow 125009, Russia

[3] Karlsruhe Inst Technol, Phys Inst, D-76131 Karlsruhe, Germany

来源：

2016 10TH INTERNATIONAL CONGRESS ON ADVANCED ELECTROMAGNETIC MATERIALS IN MICROWAVES AND OPTICS (METAMATERIALS) | 2016年

关键词：

D O I：

暂无

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：

To control phase velocity in superconducting transmission lines using short electrical pulses, a few approaches are being developed. A new design is developed for left-to-right (L2R) and right-to-left (R2L) tunable transmission lines based on a CPW with embedded paired resonators containing dc-SQUIDs. Experimental layouts are designed according to rules of 2-mu m Nb-Al/AlOx-Nb technology for J(c) approximate to 0.1 kA/cm(2) and compared numerically with a scheme-model containing 40 cells at frequencies up to 20 GHz. Characteristic impedance of new dispersive transmission lines is increased above 30 Ohm; a thin-film attenuator is integrated for suppression of standing waves. A stop-band is found for R2L line demonstrating slower phase velocity; this transmission gap is due to effect of shorter wavelength (up to 100 times) reaching electrical length of the paired resonators cell (70 mu m). In case of L2R line with faster phase velocity, the transmission band can be almost flat, if simultaneous tuning of frequency for all paired resonators is provided. No negative phase velocity is found in the simulations; however, the increment of differential phase velocity is positive for R2L near edge of the stop-band and negative near the resonance for L2R case.

引用

页码：334 / 336

页数：3

共 5 条

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[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2013, 26 (11)
[3] Schmidt V. V., 1997, The Physics of Superconductors Introduction to Fundamentals and Applications
[4] Shitov S. V., 2015, 9 INT C ADV EL MAT M
[5] Negative refractive index materials
Veselago, V
Braginsky, L
Shkover, V
Hafner, C
[J]. JOURNAL OF COMPUTATIONAL AND THEORETICAL NANOSCIENCE, 2006, 3 (02) : 189 - 218

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