Patent ID: 6064895
Filing Date: 2000-05-16
Classification: H01P

Abstract:
A planar ring resonator comprising a circular substrate (1) having a substrate radius (r.sub.G0), upper and lower conductive layers (2,3) on respective opposite sides of said substrate and a housing cover (4) for said circular substrate provided with said conductive layers, said conductive layers comprising a high temperature superconductor material; andwherein said housing cover (4) comprises a truncated cone-shaped step ring (20) arranged above said substrate provided with the conductive layers, said step ring (20) has a radius (r.sub.Gi) decreasing from a maximum value with increasing distance from said substrate until at an inner housing cover radius (r.sub.G), said maximum value being equal to said substrate radius (r.sub.G0) in the vicinity of said substrate, and said upper conductive layer (2) faces said housing cover (4).