Compact superconducting single- and dual-band filter design using multimode stepped-impedance resonator<xref rid="cpb_26_12_128501fn1" ref-type="fn">*</xref> <fn id="cpb_26_12_128501fn1"> <label>*</label> <p>Project supported by the National Natural Science Foundation of China (Grant No. 61371009) and the Fund from the Chinese Ministry of Science and Technology (Grant No. 2014AA032703).</p> </fn>

Compact superconducting single- and dual-band filter design using multimode stepped-impedance resonator* *

Project supported by the National Natural Science Foundation of China (Grant No. 61371009) and the Fund from the Chinese Ministry of Science and Technology (Grant No. 2014AA032703).

Wang Xiang¹, Wei Bin^{1, †}, Lu Xi-Long², Guo Xu-Bo¹, Cao Bi-Song¹

(color online) (a) Quadruple-mode stepped-impedance structure and its symmetrical planes. (b) Odd-mode circuit of QSIR when a vertical plane is applied. (c) Even-mode circuit of QSIR when a vertical plane is applied.