A novel ultra-compact resonator for superconducting thin-film filters

Concerning the influence of the resonator structures on the quality factor and design of an ultra-narrowband superconducting filter

“…The loss parameters used in the simulation of each Q are listed in Table 1. In Table 1, r eff is the effective conductivity of circuit metal, 1.2 Â 10 13 S/m is the typical value for YBCO HTS thin films in the frequency range [8], tan d d is the dielectric loss tangent of MgO substrate [9], r h is the conductivity of the shielding box cover, 5.8 Â 10 7 S/m is the conductivity of Copper at room temperature. Figure 2 shows an example resonator circuit and the simulated results.…”

Study of New Planar Resonator’s Topologies Little Perceptible in Variations of Substratum’s Height

“…The introduction of coplanar structures allows decreasing the variation of the frequency of echo according to the height of the substratum but degrades the quality factor [11]. This various topologies also has the advantage to decrease the dimensions of the resonator because to obtain a frequency of echo of 4 GHz, it would be necessary to decrease the structure dimensions.…”

Fabrication and measurement of 5GHz miniaturized 10-pole bandpass filter using superconducting microstrip quasi-spiral resonators

“…The incident power was limited to 10 mW because the current density of filter reached critical current density at edges of thin line or bends [21]. However, the powerhandling performance was equivalent to other excellent miniaturized filters [19,20]. In the next work, a 17-pole QSR BPF will be developed using double-sided MgB 2 films.…”