Quarter-wavelength stepped-impedance YBCO resonators for miniaturized dual-band high-Tc superconducting filters

Li Min Wang, Min Chih Chang, Shiun Fa Li, Jhe Wei Liou, Chiuan Yu Shiau, Chung I.G. Hsu, Ching-Her Lee

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

A dual-band high-temperature superconducting (HTS) bandpass filter (BPF) is proposed for wireless local area network applications. Using quarter-wavelength stepped-impedance resonators, the designed filter can be miniaturized and shows a dual-band response. The simulation results show the dual-band feature of two passbands at 2.4 and 5.2 GHz, each with a minimum in-band insertion loss of about 0.02 dB. The filter was made out of patterned double-sided deposited yBa 2 Cu 3 O y (YBCO) films integrated with a gold-coated housing. The realized HTS BPF shows two passbands at 2.41 and 5.24 GHz with minimum insertion losses of 0.86 and 1.97 dB, respectively. The measured results show a good HTS BPF performance. Moreover, the temperature-dependent center frequencies can be well described by the modified two-fluid model based formulas, indicating that the frequency shift in HTS BPF is dominated by the temperature dependence of the magnetic penetration depth.

Original languageEnglish
Article number5067156
Pages (from-to)895-898
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume19
Issue number3
DOIs
Publication statusPublished - 2009 Jun 1

Fingerprint

bandpass filters
Resonators
resonators
impedance
Bandpass filters
filters
Wavelength
insertion loss
wavelengths
Insertion losses
Temperature
two fluid models
local area networks
frequency shift
penetration
gold
Wireless local area networks (WLAN)
Gold
temperature dependence
Fluids

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Wang, Li Min ; Chang, Min Chih ; Li, Shiun Fa ; Liou, Jhe Wei ; Shiau, Chiuan Yu ; Hsu, Chung I.G. ; Lee, Ching-Her. / Quarter-wavelength stepped-impedance YBCO resonators for miniaturized dual-band high-Tc superconducting filters. In: IEEE Transactions on Applied Superconductivity. 2009 ; Vol. 19, No. 3. pp. 895-898.
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Quarter-wavelength stepped-impedance YBCO resonators for miniaturized dual-band high-Tc superconducting filters. / Wang, Li Min; Chang, Min Chih; Li, Shiun Fa; Liou, Jhe Wei; Shiau, Chiuan Yu; Hsu, Chung I.G.; Lee, Ching-Her.

In: IEEE Transactions on Applied Superconductivity, Vol. 19, No. 3, 5067156, 01.06.2009, p. 895-898.

Research output: Contribution to journalArticle

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