Integrated microwave SQUID

Determination of circuit parameters in a 10‐GHz microstrip RF squid

“…The circular arc strips are similarly transformed into planar strips of width 2a each, with a separation In(clb). If the arc length of the strip and width of the annular ring are such that the sum of In(dla) and a in the transformed plane is small compared with 2n, the field is essentially zero at the edges of the ground conductors [2]. Hence, the relations between various parameters of a planar broad side couple suspended microstrip lines available in the literature [ 131 based on the assumption of infinite ground planes can be extended to determine the even-and odd-mode characteristic impedances.…”

“…The availability of manufacturable SQUID devices opens the possibility for new superconductor-based microwave components, such as microwave phase shifters. For cryogenic applications, HTS SQUIDs can provide active elements that replace semiconductor devices [2,31. RF SQUID performance was investigated to determine the circuit parameters of a newly developed SQUID phase shifter which has a circuit diagram that is similar to the conventional RF SQUID.…”

“…Analysis of broadside coupled cylindrical strip lines using variational technique has been reported in the literature [S]. A conformal mapping technique was used for analysis of cylindrical strip and microstrip lines by Joshi and Das [2] and Zeng and Wang (41. Simple formulas for even-and odd-mode characteristic impedances of edge-coupled cylindrical strip lines and broadside coupled cylindrical strip lines were given by Reddy and Deshpande [9, lo], respectively.…”