Design of dual-band superconducting bandpass filter using dual-mode hairpin ring resonator

Abstract

A novel hairpin ring resonator (HRR) is proposed in this paper. The HRR can generates two controllable resonant modes and its mechanism is analyzed. Then, a fourth-order dualband high-temperature superconducting (HTS) bandpass filter (BPF) is designed by cascading four HRRs. The HTS filter operating at 1.9 GHz and 2.6 GHz is fabricated on the MgO substrate with double-side coated YBCO thin films. The designed filter has a compact size (occupies only 17.6 mm × 14 mm). The measured results show high performance and agree well with the simulated ones.Keywords-bandpass filter (BPF); dual-band; hairpin ring resonator (HRR); high-temperature superconducting (HTS)

Planar Quadruplexer with Adjacent Passbands Using Bandpass Filters Based on Dual-path Hairpin Resonators

“…Therefore, applications of Tzs have been studied as described in. [2][3][4][5] In, [6] a dual-mode resonator is used to obtain steepness and high out-of-band suppression levels, but little is mentioned about a design procedure for a BPF with a dualmode resonator. Multiplexers with hairpin resonators have also been considered for BPF applications.…”