DocumentCode :
1194617
Title :
High-Temperature Superconducting Coplanar Left-Handed Transmission Lines and Resonators
Author :
Wang, Yi ; Lancaster, Michael J.
Author_Institution :
Sch. of Eng., Univ. of Birmingham
Volume :
16
Issue :
3
fYear :
2006
Firstpage :
1893
Lastpage :
1897
Abstract :
This paper implements wideband, low-loss, and via-free left-handed transmission lines (LH-TLs) using superconductor thin films. Introducing superconductors greatly reduces the loss inherited in the constituent series capacitors and shunt inductors of such planar LH-TLs. The measured results agree very well with design expectations. The bandwidth of left-handed characteristics is 4.9-10.9 GHz, with a minimum insertion loss of 0.03 dB at 30 K. Open-ended LH-TL resonators are also characterized at the different harmonics; of special interest are those with zero or negative phase constants, which are not possible when using any conventional transmission lines. Temperature-dependence measurements of the LH-TLs reveal the effect of the superconductor kinetic inductance
Keywords :
coplanar transmission lines; high-temperature superconductors; metamaterials; superconducting resonators; superconducting thin films; 30 K; 4.9 to 10.9 GHz; capacitors; coplanar left-handed transmission lines; high-temperature superconducting thin films; phase constants; resonators; shunt inductors; superconductor kinetic inductance; Capacitors; Coplanar transmission lines; High temperature superconductors; Planar transmission lines; Shunt (electrical); Superconducting thin films; Superconducting transmission lines; Thin film inductors; Transmission line measurements; Wideband; Coplanar waveguides (CPWs); left-handed transmission lines (LH-TL); resonators; superconducting microwave devices;
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2006.873992
Filename :
1687908
Link To Document :
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