A compact HTS bandpass microstrip filter with novel coupling structure for on-chip integration

Ting Zhang*, Jia Du, Yingjie Jay Guo, Xiaowei Sun

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

A compact low-complexity high-selectivity high-temperature superconducting (HTS) microstrip bandpass filter is presented in this paper, which consists of only three half-wavelength resonators. A novel coupling scheme is used to provide a pair of transmission zeros outside the passband, so that the selectivity of the filter is improved. The filter is fabricated on an MgO substrate with YBa2Cu3O7-x (YBCO) coating. Measurement result shows an in-band insertion loss at 0.5 dB, a sharp slope, and a stopband rejection better than 20 dB. The compactness and high-selectivity features make the filter suitable for on-chip integration of HTS receiver front-ends.

Original languageEnglish
Pages (from-to)69-73
Number of pages5
JournalPhysica C: Superconductivity and its Applications
Volume495
DOIs
Publication statusPublished - 2013
Externally publishedYes

Keywords

  • Coupling scheme
  • High temperature superconductor
  • Insertion loss
  • Transmission zero

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