A compact high-T c superconducting quarter-wavelength SIR bandpass filter

Ting Zhang; Yong Cai; Jia Du; Ying Jay Guo; Xiao Wei Sun

doi:10.1109/ASEMD.2011.6145083

A compact high-T _c superconducting quarter-wavelength SIR bandpass filter

Ting Zhang^*, Yong Cai, Jia Du, Ying Jay Guo, Xiao Wei Sun

^*Corresponding author for this work

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

1 Citation (Scopus)

Abstract

A compact high-temperature superconducting bandpass filter for wireless communications is proposed in this paper. The filter consists of four quarter-wavelength short-circuited stepped impedance resonators (SIR). A pair of transmission zeros outside the passband are introduced into the design by evaluating coupling coefficients between the four resonators for high selectivity within the frequency band of interest. The use of short-circuited quarter-wavelength SIRs has resulted in a higher spurious passband than conventional half-wavelength coupled-line filters. Based on the theoretical calculations, the filter has a compact size and exhibits a well suppressed stopband. The filter is fabricated on an MgO substrate with YBCO superconductor coating. Simulation and measurement results are presented.

Original language	English
Title of host publication	ASEMD 2011
Subtitle of host publication	2011 International Conference on Applied Superconductivity and Electromagnetic Devices
Place of Publication	Piscataway, NJ
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	123-126
Number of pages	4
ISBN (Electronic)	9781424478538, 9781424478514
ISBN (Print)	9781424478521
DOIs	https://doi.org/10.1109/ASEMD.2011.6145083
Publication status	Published - 2011
Externally published	Yes
Event	2011 International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2011 - Sydney, NSW, Australia Duration: 14 Dec 2011 → 16 Dec 2011

Other

Other	2011 International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2011
Country/Territory	Australia
City	Sydney, NSW
Period	14/12/11 → 16/12/11

Keywords

high-Tc superconductor
bandpass filter
stepped impedance resonator
transmission zero

Access to Document

10.1109/ASEMD.2011.6145083

Cite this

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title = "A compact high-T c superconducting quarter-wavelength SIR bandpass filter",

abstract = "A compact high-temperature superconducting bandpass filter for wireless communications is proposed in this paper. The filter consists of four quarter-wavelength short-circuited stepped impedance resonators (SIR). A pair of transmission zeros outside the passband are introduced into the design by evaluating coupling coefficients between the four resonators for high selectivity within the frequency band of interest. The use of short-circuited quarter-wavelength SIRs has resulted in a higher spurious passband than conventional half-wavelength coupled-line filters. Based on the theoretical calculations, the filter has a compact size and exhibits a well suppressed stopband. The filter is fabricated on an MgO substrate with YBCO superconductor coating. Simulation and measurement results are presented.",

keywords = "high-Tc superconductor, bandpass filter, stepped impedance resonator, transmission zero",

author = "Ting Zhang and Yong Cai and Jia Du and Guo, {Ying Jay} and Sun, {Xiao Wei}",

year = "2011",

doi = "10.1109/ASEMD.2011.6145083",

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isbn = "9781424478521",

pages = "123--126",

booktitle = "ASEMD 2011",

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note = "2011 International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2011 ; Conference date: 14-12-2011 Through 16-12-2011",

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Zhang, T, Cai, Y, Du, J, Guo, YJ & Sun, XW 2011, A compact high-T _c superconducting quarter-wavelength SIR bandpass filter. in ASEMD 2011: 2011 International Conference on Applied Superconductivity and Electromagnetic Devices., ID056, Institute of Electrical and Electronics Engineers (IEEE), Piscataway, NJ, pp. 123-126, 2011 International Conference on Applied Superconductivity and Electromagnetic Devices, ASEMD 2011, Sydney, NSW, Australia, 14/12/11. https://doi.org/10.1109/ASEMD.2011.6145083

A compact high-T _c superconducting quarter-wavelength SIR bandpass filter. / Zhang, Ting; Cai, Yong; Du, Jia et al.
ASEMD 2011: 2011 International Conference on Applied Superconductivity and Electromagnetic Devices. Piscataway, NJ: Institute of Electrical and Electronics Engineers (IEEE), 2011. p. 123-126 ID056.

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

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AB - A compact high-temperature superconducting bandpass filter for wireless communications is proposed in this paper. The filter consists of four quarter-wavelength short-circuited stepped impedance resonators (SIR). A pair of transmission zeros outside the passband are introduced into the design by evaluating coupling coefficients between the four resonators for high selectivity within the frequency band of interest. The use of short-circuited quarter-wavelength SIRs has resulted in a higher spurious passband than conventional half-wavelength coupled-line filters. Based on the theoretical calculations, the filter has a compact size and exhibits a well suppressed stopband. The filter is fabricated on an MgO substrate with YBCO superconductor coating. Simulation and measurement results are presented.

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