Hamid Reza Mohebbi and A Hamed Majedi 2009 Supercond. Sci. Technol. 22 125028 doi:10.1088/0953-2048/22/12/125028
Hamid Reza Mohebbi and A Hamed Majedi
Show affiliationsUsing the concept of surface impedance associated with a superconductor or normal conductor's plate, we extend the CAD (computer aided design) formalisms on modeling and simulation of superconducting and normal transmission lines (STL and NTL) in order to include hybrid transmission lines (HTL). STL and NTL are entirely made of superconductor or normal conductor materials, respectively. In this paper, HTL refers to a planar transmission line (TL) such as parallel plate (PPTL), microstrip (μTL) and coplanar waveguide (CPW) whose ground plate is superconducting and whose top/center strip is a normal conductor or vice versa. We develop and present a set of closed-form equations in a tidy and succinct form for each configuration (STL, NTL and HTL) for widely-used planar TLs (PPTL, μTL and CPW). They can be easily implemented in a systematic way by the user for the purpose of fast TL design. The results obtained with this CAD tool are compared with previously reported results in the literature, and good agreement is observed.
85.25.Am Superconducting device characterization, design, and modeling
Issue 12 (December 2009)
Received 3 June 2009, in final form 25 September 2009
Published 10 November 2009
Hamid Reza Mohebbi and A Hamed Majedi 2009 Supercond. Sci. Technol. 22 125028
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