Improvement of power-handling capability of superconducting filters using 3D-matrix microstrip lines

11th European Conference on Applied Superconductivity

Ohshima, S.^1 ; Takahashi, S.^1 ; Endo, M.^1 ; Saito, A.^1

Graduate School of Science and Engineering, Yamagata University 4-3-16, Jonan Yonezawa

992-8510, Japan^1

关键词: Electromagnetic simulators;    Layered films;    Microstrip line filter;    NbN thin film;    Optimal shape;    Power-handling capability;    Superconducting filters;    Superconducting microstrip line;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/507/4/042027/pdf
DOI  :  10.1088/1742-6596/507/4/042027

来源: IOP

【 摘 要 】

We examined power-handling capability of superconducting filters using three different types of resonator: type one, a conventional microstrip line, type two, a layered-film microstrip line, and type three, a 3D-matrix microstrip line. The 3D-matrix microstrip line was made by dividing a type two microstrip line into narrow lines. We used NbN thin films as superconducting microstrip lines. The optimal shape of the filters was designed by using a Sonnet electromagnetic simulator, and the power-handling capability of these filters was measured at 6.5 K. The values of a conventional microstrip line, a layered-film microstrip line, and a 3D-matrix microstrip line filters were 21.2, 22.9, and 24.6 dBm, respectively.