Design of Dualband Bandpass High-Temperature Superconducting Filter With Group Delay Equalization

A novel dualband high-temperature superconducting (HTS) bandpass filter is proposed with group delay equalization for 5G emergency communication receivers with N41 and N79 bands in this paper. The dual-folded stub-loaded stepped impedance resonator (DSLSIR) is applied to realize dualband performance...

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Autores principales:	Kai Yang, Mingyang Su, Peng Chen
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	Dualband bandpass filter group delay equalization high temperature superconductor linear phase stub-loaded stepped-impedance resonator (SLSIR) Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/54f410fe28204d138755f10a70c4773c
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spelling	oai:doaj.org-article:54f410fe28204d138755f10a70c4773c2021-11-18T00:01:21ZDesign of Dualband Bandpass High-Temperature Superconducting Filter With Group Delay Equalization2169-353610.1109/ACCESS.2021.3125053https://doaj.org/article/54f410fe28204d138755f10a70c4773c2021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9599690/https://doaj.org/toc/2169-3536A novel dualband high-temperature superconducting (HTS) bandpass filter is proposed with group delay equalization for 5G emergency communication receivers with N41 and N79 bands in this paper. The dual-folded stub-loaded stepped impedance resonator (DSLSIR) is applied to realize dualband performance. The proposed DSLSIR has miniaturized circuit size and more design freedom to independently adjust the two designed center frequencies, comparing with other reported DSLSIRs. Two cross-coupling transmission lines are added at the top and bottom parts of the cascaded sixth-order filter with DSLSIRs to flatten the group delay of the passband at both bands. A dualband bandpass HTS filter etched on the YBCO superconducting material is fabricated to verify the proposed design method. The measurement is actualized at the temperature of 77 K to make YBCO microstrip lines perform superconducting features. The results show that the first center frequency is 2.595 GHz with 6.2% bandwidth for N41 band and 0.3 dB insertion loss while the second center frequency is 4.85 GHz with 2% bandwidth for N79 band and 0.4 dB insertion loss. Meanwhile, the group delays at the N41 and N79 bands keep 2 ns fluctuations in the 60% passband. The agreement between the measured and simulated results indicates that the proposed dualband bandpass HTS filter with low insertion loss, sharp roll-off skirt and flat group delay is a promising candidate for emergency communication receiver.Kai YangMingyang SuPeng ChenIEEEarticleDualband bandpass filtergroup delay equalizationhigh temperature superconductorlinear phasestub-loaded stepped-impedance resonator (SLSIR)Electrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 9, Pp 149925-149933 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Dualband bandpass filter group delay equalization high temperature superconductor linear phase stub-loaded stepped-impedance resonator (SLSIR) Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Dualband bandpass filter group delay equalization high temperature superconductor linear phase stub-loaded stepped-impedance resonator (SLSIR) Electrical engineering. Electronics. Nuclear engineering TK1-9971 Kai Yang Mingyang Su Peng Chen Design of Dualband Bandpass High-Temperature Superconducting Filter With Group Delay Equalization
description	A novel dualband high-temperature superconducting (HTS) bandpass filter is proposed with group delay equalization for 5G emergency communication receivers with N41 and N79 bands in this paper. The dual-folded stub-loaded stepped impedance resonator (DSLSIR) is applied to realize dualband performance. The proposed DSLSIR has miniaturized circuit size and more design freedom to independently adjust the two designed center frequencies, comparing with other reported DSLSIRs. Two cross-coupling transmission lines are added at the top and bottom parts of the cascaded sixth-order filter with DSLSIRs to flatten the group delay of the passband at both bands. A dualband bandpass HTS filter etched on the YBCO superconducting material is fabricated to verify the proposed design method. The measurement is actualized at the temperature of 77 K to make YBCO microstrip lines perform superconducting features. The results show that the first center frequency is 2.595 GHz with 6.2% bandwidth for N41 band and 0.3 dB insertion loss while the second center frequency is 4.85 GHz with 2% bandwidth for N79 band and 0.4 dB insertion loss. Meanwhile, the group delays at the N41 and N79 bands keep 2 ns fluctuations in the 60% passband. The agreement between the measured and simulated results indicates that the proposed dualband bandpass HTS filter with low insertion loss, sharp roll-off skirt and flat group delay is a promising candidate for emergency communication receiver.
format	article
author	Kai Yang Mingyang Su Peng Chen
author_facet	Kai Yang Mingyang Su Peng Chen
author_sort	Kai Yang
title	Design of Dualband Bandpass High-Temperature Superconducting Filter With Group Delay Equalization
title_short	Design of Dualband Bandpass High-Temperature Superconducting Filter With Group Delay Equalization
title_full	Design of Dualband Bandpass High-Temperature Superconducting Filter With Group Delay Equalization
title_fullStr	Design of Dualband Bandpass High-Temperature Superconducting Filter With Group Delay Equalization
title_full_unstemmed	Design of Dualband Bandpass High-Temperature Superconducting Filter With Group Delay Equalization
title_sort	design of dualband bandpass high-temperature superconducting filter with group delay equalization
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/54f410fe28204d138755f10a70c4773c
work_keys_str_mv	AT kaiyang designofdualbandbandpasshightemperaturesuperconductingfilterwithgroupdelayequalization AT mingyangsu designofdualbandbandpasshightemperaturesuperconductingfilterwithgroupdelayequalization AT pengchen designofdualbandbandpasshightemperaturesuperconductingfilterwithgroupdelayequalization
_version_	1718425225199091712

Design of Dualband Bandpass High-Temperature Superconducting Filter With Group Delay Equalization

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