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Microwave Properties of Tunable Phase Shifter Using Superconductor/Ferroelectric Thin Films
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- Issue Date
- 2005-04
- Citation
- Integrated Ferroelectrics, v.77, no.1, pp.79-85
- ISSN
- 1058-4587
- Publisher
- Taylor & Francis
- Language
- English
- Type
- Journal Article
- Project Code
- 04MB5700, Ferroelectric phase shifter MMIC technology for phase arrary system, Su Jae Lee
- Abstract
- High temperature superconductor, YBa2Cu3O 7-灌 (YBCO), and ferroelectric, Ba0.1Sr 0.9TiO3 (BST), multilayer thin films were deposited on MgO (100) substrates using a pulsed laser deposition. The thin films exhibited only (001) peaks of YBCO and BST. The HTS thin films demonstrated excellent zero resistance temperature of 92.5 K. We designed and fabricated HTS ferroelectric phase shifter using high frequency system simulator and standard photolithography method, respectively. The YBCO/BST phase shifter shows a low insertion loss (2.97 dB) and large phase change (162째) with dc bias of 40 V at operating frequency of 10 GHz. The HTS ferroelectric phase shifter shows 54 of figure of merit. These results can be applicable to phased array antenna system for satellite communication services.
- KSP Keywords
- 10 Ghz, Figure of merit, High Frequency(HF), Microwave properties, Operating frequency, Phase change, Phased array antenna system, Pulsed-laser deposition(PLD), Zero resistance temperature, dc bias, distributed antenna systems(DAS)