Coplanar transmission lines with meandering centre conductors in Y-Ba-Cu-O/Au bilayers

We have investigated both conventional and meandering coplanar microwave tr ansmission lines patterned in Y-Ba-Cu-O/Au bilayers on yttria-stabilized zi rconia and sapphire substrates. Within the meandering waveguides, the centr e conductor was deformed from a straight line to a meander. Such a layout c ould be useful for metrological high-T-c superconductor arrays, which are b ased on series arrays of shunted YBCO bicrystral junctions. The microwave p roperties of the lines were measured in the range 0-40 GHz at 76 K, using o n-chip through-reflect-line calibrations. We discuss the measured attenuati on in terms of conductor losses in the bilayers and show to what extent the disturbance of the line geometry affects the microwave properties.