A Compact Wide Stopband HTS Filter Based on Harmonic Suppression Technology

Qingyue Liu; Guang Song Wei; Xueyang Fang; Bokai Weng; Yiheng Chen; Jianying Li; Qingyu Kong; Xilong Lu

doi:10.1109/ICMMT65948.2025.11187542

A Compact Wide Stopband HTS Filter Based on Harmonic Suppression Technology

Qingyue Liu
, Guang Song Wei
, Xueyang Fang
, Bokai Weng
, Yiheng Chen
, Jianying Li
, Qingyu Kong
, Xilong Lu

School of Electronics and Information

Northwestern Polytechnical University Xian

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

This paper proposes a modified SIR and a compact wide stopband HTS bandpass filter. On both sides of the center of the modified SIR, two rectangular stubs can be loaded, which can not only produce two transmission modes, but also push the harmony far away. At the same time, loading the fan-shaped stubs on the coupling feedline can provide band-blocking response, further broaden the stopband of the filter. Finally, the filter provided performance within the frequency range of 3 GHz ∼ 5 GHz, and the return-loss was better than 15 dB. In the range of 5 GHz ∼ 26 GHz, a wide stopband was formed, and the out-ofband rejection was higher than 20 dB.

Original language	English
Title of host publication	2025 International Conference on Microwave and Millimeter Wave Technology, ICMMT 2025 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Edition	2025
ISBN (Electronic)	9798331525736
DOIs	https://doi.org/10.1109/ICMMT65948.2025.11187542
State	Published - 2025
Event	16th International Conference on Microwave and Millimeter Wave Technology, ICMMT 2025 - Xi�an, China Duration: 19 May 2025 → 22 May 2025

Conference

Conference	16th International Conference on Microwave and Millimeter Wave Technology, ICMMT 2025
Country/Territory	China
City	Xi�an
Period	19/05/25 → 22/05/25

Keywords

Bandpass filter (BPF)
Dual-mode resonator
High temperature superconducting (HTS)
Out-of-band rejection (OOBR)
Stepped Impedance Resonator (SIR)

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10.1109/ICMMT65948.2025.11187542

Cite this

Liu, Q., Wei, G. S., Fang, X., Weng, B., Chen, Y., Li, J., Kong, Q., & Lu, X. (2025). A Compact Wide Stopband HTS Filter Based on Harmonic Suppression Technology. In 2025 International Conference on Microwave and Millimeter Wave Technology, ICMMT 2025 - Proceedings (2025 ed.). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICMMT65948.2025.11187542

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title = "A Compact Wide Stopband HTS Filter Based on Harmonic Suppression Technology",

abstract = "This paper proposes a modified SIR and a compact wide stopband HTS bandpass filter. On both sides of the center of the modified SIR, two rectangular stubs can be loaded, which can not only produce two transmission modes, but also push the harmony far away. At the same time, loading the fan-shaped stubs on the coupling feedline can provide band-blocking response, further broaden the stopband of the filter. Finally, the filter provided performance within the frequency range of 3 GHz ∼ 5 GHz, and the return-loss was better than 15 dB. In the range of 5 GHz ∼ 26 GHz, a wide stopband was formed, and the out-ofband rejection was higher than 20 dB.",

keywords = "Bandpass filter (BPF), Dual-mode resonator, High temperature superconducting (HTS), Out-of-band rejection (OOBR), Stepped Impedance Resonator (SIR)",

author = "Qingyue Liu and Wei, \{Guang Song\} and Xueyang Fang and Bokai Weng and Yiheng Chen and Jianying Li and Qingyu Kong and Xilong Lu",

note = "Publisher Copyright: {\textcopyright} 2025 IEEE.; 16th International Conference on Microwave and Millimeter Wave Technology, ICMMT 2025 ; Conference date: 19-05-2025 Through 22-05-2025",

year = "2025",

doi = "10.1109/ICMMT65948.2025.11187542",

language = "英语",

booktitle = "2025 International Conference on Microwave and Millimeter Wave Technology, ICMMT 2025 - Proceedings",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

edition = "2025",

}

Liu, Q, Wei, GS, Fang, X, Weng, B, Chen, Y, Li, J, Kong, Q & Lu, X 2025, A Compact Wide Stopband HTS Filter Based on Harmonic Suppression Technology. in 2025 International Conference on Microwave and Millimeter Wave Technology, ICMMT 2025 - Proceedings. 2025 edn, Institute of Electrical and Electronics Engineers Inc., 16th International Conference on Microwave and Millimeter Wave Technology, ICMMT 2025, Xi�an, China, 19/05/25. https://doi.org/10.1109/ICMMT65948.2025.11187542

A Compact Wide Stopband HTS Filter Based on Harmonic Suppression Technology. / Liu, Qingyue; Wei, Guang Song; Fang, Xueyang et al.
2025 International Conference on Microwave and Millimeter Wave Technology, ICMMT 2025 - Proceedings. 2025. ed. Institute of Electrical and Electronics Engineers Inc., 2025.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - A Compact Wide Stopband HTS Filter Based on Harmonic Suppression Technology

AU - Liu, Qingyue

AU - Wei, Guang Song

AU - Fang, Xueyang

AU - Weng, Bokai

AU - Chen, Yiheng

AU - Li, Jianying

AU - Kong, Qingyu

AU - Lu, Xilong

PY - 2025

Y1 - 2025

N2 - This paper proposes a modified SIR and a compact wide stopband HTS bandpass filter. On both sides of the center of the modified SIR, two rectangular stubs can be loaded, which can not only produce two transmission modes, but also push the harmony far away. At the same time, loading the fan-shaped stubs on the coupling feedline can provide band-blocking response, further broaden the stopband of the filter. Finally, the filter provided performance within the frequency range of 3 GHz ∼ 5 GHz, and the return-loss was better than 15 dB. In the range of 5 GHz ∼ 26 GHz, a wide stopband was formed, and the out-ofband rejection was higher than 20 dB.

AB - This paper proposes a modified SIR and a compact wide stopband HTS bandpass filter. On both sides of the center of the modified SIR, two rectangular stubs can be loaded, which can not only produce two transmission modes, but also push the harmony far away. At the same time, loading the fan-shaped stubs on the coupling feedline can provide band-blocking response, further broaden the stopband of the filter. Finally, the filter provided performance within the frequency range of 3 GHz ∼ 5 GHz, and the return-loss was better than 15 dB. In the range of 5 GHz ∼ 26 GHz, a wide stopband was formed, and the out-ofband rejection was higher than 20 dB.

KW - Bandpass filter (BPF)

KW - Dual-mode resonator

KW - High temperature superconducting (HTS)

KW - Out-of-band rejection (OOBR)

KW - Stepped Impedance Resonator (SIR)

UR - https://www.scopus.com/pages/publications/105020818882

U2 - 10.1109/ICMMT65948.2025.11187542

DO - 10.1109/ICMMT65948.2025.11187542

M3 - 会议稿件

AN - SCOPUS:105020818882

BT - 2025 International Conference on Microwave and Millimeter Wave Technology, ICMMT 2025 - Proceedings

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 16th International Conference on Microwave and Millimeter Wave Technology, ICMMT 2025

Y2 - 19 May 2025 through 22 May 2025

ER -

A Compact Wide Stopband HTS Filter Based on Harmonic Suppression Technology

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