Fabrication of MOD-derived YBCO films on [001]LaAlO/sub 3/ and their application to λ/4 CPW SIR BPFs
In: IEEE Transactions on Microwave Theory and Techniques, Jg. 50 (2002-12-01), S. 2856-2861
Online
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Zugriff:
Chemically derived epitaxial thin films of YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// (YBCO) are fabricated on [001]LaAlO/sub 3/ substrates by the metalorganic-deposition (MOD) process, which has advantages of high quality, nonvacuum, low-cost, and large-scale production of high-T/sub c/ superconducting films. The MOD-derived YBCO films have a sharp transition at the critical temperature (90.4 K) and a high-quality film with a surface resistance of 0.13 m/spl Omega/ (30 K, 9.98 GHz) is obtained. As a microwave application, simple and compact bandpass filters (BPFs) using /spl lambda//4 coplanar-waveguide. stepped-impedance resonators are demonstrated on the YBCO films. A two-stage Chebyshev BPF of center frequency of 5.731 GHz, bandwidth of 135 MHz, and insertion loss of 0.29 dB with little input power dependency in a power range less than 10 dBm is realized on the film.
| Titel: |
Fabrication of MOD-derived YBCO films on [001]LaAlO/sub 3/ and their application to λ/4 CPW SIR BPFs
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| Autor/in / Beteiligte Person: | Awai, I. ; Kimura, M. ; Sanada, Atsushi ; Yamamoto, T. |
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| Zeitschrift: | IEEE Transactions on Microwave Theory and Techniques, Jg. 50 (2002-12-01), S. 2856-2861 |
| Veröffentlichung: | Institute of Electrical and Electronics Engineers (IEEE), 2002 |
| Medientyp: | unknown |
| ISSN: | 0018-9480 (print) |
| DOI: | 10.1109/tmtt.2002.805140 |
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