High-Temperature Superconducting Composite Right/Left-Handed Resonator

In this paper, a high-temperature superconducting composite right/left-handed (HTS CRLH) resonator is proposed, which is constructed by microstrip spiral coupled lines and step-like microstrip lines. The dispersion characteristics of the CRLH resonator is obtained and analyzed by an equivalent circuit model and a transmission matrix method. To verify this design methodology, the HTS CRLH resonator is designed and fabricated with a compact size of 11.25 mm $\times$ 16 mm on YBa₂Cu₃O₇ films. The power handling capability of the filter is studied. Finally, the measured and simulated results are in good agreement with each other.