100-W-class superconducting transmit bandpass filter using thick disk resonator made with Gd-Ba-Cu-O single-crystal bulk

A 100-W-class superconducting bandpass filter (BPF) with a center frequency of around 5 GHz and a bandwidth of 100 MHz was successfully fabricated using thick disk resonators made with GdBa2Cu3Oy (GdBCO) single-crystal bulk. We designed a five-pole BPF and analyzed the frequency responses and electr...

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Bibliographic Details
Published inApplied physics express Vol. 8; no. 4; pp. 43101 - 43103
Main Authors Saito, Atsushi, Tsurui, Ryota, Kato, Tomoki, Nakajima, Kensuke, Teshima, Hidekazu, Ohshima, Shigetoshi
Format Journal Article
LanguageEnglish
Published The Japan Society of Applied Physics 01.04.2015
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Summary:A 100-W-class superconducting bandpass filter (BPF) with a center frequency of around 5 GHz and a bandwidth of 100 MHz was successfully fabricated using thick disk resonators made with GdBa2Cu3Oy (GdBCO) single-crystal bulk. We designed a five-pole BPF and analyzed the frequency responses and electromagnetic fields. The five-pole BPF optimized by simulation was made from GdBCO superconducting bulk resonators and five pairs of Al2O3 substrates in a Cu cavity with trimming mechanisms. Its filtering with low insertion loss was clearly evident at around 30 K, and it could handle more than 100 W.
ISSN:1882-0778
1882-0786
DOI:10.7567/APEX.8.043101