Sapphire and rutile dielectric resonators for measurements of surface resistance of superconducting thin films

Dielectric resonators are widely used for measurements of surface resistance of High Temperature Superconducting films for cellular and PCS filters. This paper discusses properties of two 10 GHz resonators; a sapphire Hakki-Coleman resonator and an open ended rutile resonator in terms of their suitability and accuracy for microwave characterisation of HTS films.