Microwave component of compound oxide superconductor material having crystal orientation for reducing electromagnetic field penetration

A microwave component, comprising:

• a substrate;
• a patterned superconducting signal conductor comprised of an oxide superconducting thin film provided at a first surface of the substrate;
• and
• a superconducting ground conductor comprised of either the same oxide superconductor film or different oxide superconductor films provided at a second surface of the substrate, wherein
• a microwave signal applied to and launched on the superconducting signal conductor generates an electromagnetic field which penetrates into the superconducting signal conductor, and
• the superconducting signal conductor and the superconducting ground plane having respective crystal orientations which are arranged to reduce the penetration of the electromagnetic field into the superconducting signal conductor such that a resonant frequency of the microwave component at a temperature below the critical temperature is substantially independent of temperature deviations.