TY - JOUR
T1 - Miniature Wideband Superconducting Filter Design With Four Transmission Zeros Based on Quintuple-Mode Resonator (QMR)
AU - Lu, Xilong
AU - Fang, Xueyang
AU - Kong, Qingyu
AU - Zhang, Rui
AU - Zhou, Shigang
AU - Zhou, Liguo
AU - Luo, Xianhu
AU - Yang, Yuhang
AU - Liu, Qingyue
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2025/10
Y1 - 2025/10
N2 - This letter presents a high-temperature superconducting (HTS) wideband bandpass filter (BPF) based on quintuple-mode resonator (QMR). The connected resonator method (CRM) is employed to efficiently construct the multimode resonator. The proposed QMR generates two odd-mode frequencies and three even-mode frequencies, which collectively form the filter’s passband. To validate the proposed approach, one- and two-stage wideband filters are designed based on the QMR. Additionally, four transmission zeros (TZs) are strategically placed on both sides of the passband, significantly improving selectivity. By adjusting the geometrical parameters, these TZs can be controlled. The proposed wideband filter operates at 6.31 GHz with a fractional bandwidth (FBW) of approximately 78.3%. Measured results demonstrate excellent agreement with simulations, confirming the effectiveness of the design.
AB - This letter presents a high-temperature superconducting (HTS) wideband bandpass filter (BPF) based on quintuple-mode resonator (QMR). The connected resonator method (CRM) is employed to efficiently construct the multimode resonator. The proposed QMR generates two odd-mode frequencies and three even-mode frequencies, which collectively form the filter’s passband. To validate the proposed approach, one- and two-stage wideband filters are designed based on the QMR. Additionally, four transmission zeros (TZs) are strategically placed on both sides of the passband, significantly improving selectivity. By adjusting the geometrical parameters, these TZs can be controlled. The proposed wideband filter operates at 6.31 GHz with a fractional bandwidth (FBW) of approximately 78.3%. Measured results demonstrate excellent agreement with simulations, confirming the effectiveness of the design.
KW - Bandpass filter (BPF)
KW - high-temperature superconducting (HTS)
KW - transmission zero (TZ)
KW - wideband filter
UR - https://www.scopus.com/pages/publications/105012119662
U2 - 10.1109/LMWT.2025.3587729
DO - 10.1109/LMWT.2025.3587729
M3 - 文章
AN - SCOPUS:105012119662
SN - 2771-957X
VL - 35
SP - 1486
EP - 1489
JO - IEEE Microwave and Wireless Technology Letters
JF - IEEE Microwave and Wireless Technology Letters
IS - 10
ER -