Miniaturized 3 GHz cross-coupled planar microwave filters

Hui Kai Zeng*, Anting Hsiao, Wei Hsiu Hsu, Shao Wei Wu, Jiunn Yuan Lin, Kaung Hsiung Wu, Jenh Yih Juang, Tseng Ming Uen, Yi Shun Gou, Jen Tsai Kuo

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

8 Scopus citations


Cross-coupled planar microwave filters were fabricated using YB 2Cu3O7-δ superconducting thin films deposited on both sides of a LaAlO3 single crystal substrate by pulsed laser deposition. The hairpin resonator geometry allows one to miniaturize the 3-GHz filters by compacting the entire filter onto a substrate with dimensions 0.5 cm × 1 cm. By adjusting the relative spacing among the resonators to establish adequate couplings, filters with very sharp rejection skirt and extremely small insertion loss in passband were obtained.

Original languageEnglish
Pages (from-to)107-111
Number of pages5
JournalIEEE Transactions on Applied Superconductivity
Issue number1
StatePublished - 03 2004
Externally publishedYes


  • Compact miniaturized hairpin resonators
  • High-temperature superconducting (HTS) thin films
  • Planar microwave filters


Dive into the research topics of 'Miniaturized 3 GHz cross-coupled planar microwave filters'. Together they form a unique fingerprint.

Cite this