We study general properties and new applications of the inductive coupling of a superconducting stripline system, which takes advantage of kinetic inductance of thin superconducting films. We formulate the system composed of two striplines inductively coupled through a common electrode as a four-port circuitry by obtaining its scattering coefficients in a general form, and also characterize the system with the coupled-mode theory. Based on the analysis, we propose new-type of kinetic inductance devices for microwave analog-components, such as directional coupler, microwave switch, variable filter, and efficient coupling elements for striplines. Experiments on stripline coupling with this scheme have been also discussed.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering