Study of Coupling in Superconducting Transmission Lines
摘要
The use of transmission lines is widely accepted in the design of multiple active and passive devices given their capabilities to operate with signals in the whole frequency spectrum. However, a factor that difficult their design is the coupling effect when there are multiple transmission lines in parallel. Depending of the application, this factor could have a beneficial or detrimental effect in transmission lines. In particular, superconducting parametric amplifiers experiment this effect. The focus of this paper to understand the crosstalk so future superconducting parametric amplifiers can be designed considering the crosstalk. The study was achieved using coplanar waveguide transmission lines, artificial coplanar waveguide transmission lines, and microstrip lines. Dimensions of state-of-the-art (SOTA) parametric amplifiers have been used to have a suitable comparison with the nowadays state of the art superconducting parametric amplifiers.