Improvement of power handling capability and out-of-band rejection for HTS stripline filter with shuttle-shape resonators

Progress on applications of high temperature superconducting microwave filters

“…In recent years, many works have concentrated on improving the power handling capabilities of HTS filters by using various types of resonators, such as bulk resonators [26][27][28], dual-mode resonators [29][30][31], strip line resonators [32][33][34][35][36], and microstrip line resonators [37][38][39][40][41][42][43][44], and impressive progress has been made. Generally, the critical current of the HTS bulk resonators and strip line resonators can be significantly larger than that of the microstrip resonators.…”

“…So HTS filters using bulk resonators or strip line resonators tend to have a higher power handling capability. A group in Japan has recently done a lot of work and proposed several HTS filters using DyBa 2 Cu 3 O y disk-and ring-type bulk resonators [26][27][28] and strip line resonators [33][34][35][36]. So far, the highest power handling capability was found to be 114 W at 20 K (33.8 W at 70 K) in a HTS bulk filter [28], and 31 W (44.9 dBm) at 60 K in a strip line dual-mode patch filter [36].…”