Compact lumped-element microwave resonators using epitaxial YBa{sub 2}Cu{sub 3}O{sub 7{minus}x}/NdAlO{sub 3}/YBa{sub 2}Cu{sub 3}O{sub 7{minus}x} trilayers
- Superconductor Technologies Inc., Santa Barbara, California 93111 (United States)
Thick, high-quality epitaxial trilayers of YBa{sub 2}Cu{sub 3}O{sub 7{minus}x}/NdAlO{sub 3}/YBa{sub 2}Cu{sub 3}O{sub 7} were grown on (100) MgO substrates by pulsed laser deposition. Compact resonators based on such trilayers were designed, fabricated, and tested. The resonant frequencies of the resonators were varied from 1.6 to 9.4 GHz by varying the device geometry within a die size of 2{times}2mm. The values of the capacitive and inductive elements of the resonator and series resistance were estimated, and the frequency response of the circuit model was simulated. The measured and simulated resonant frequencies, insertion losses, and quality factors were in agreement. The contact resistivity of the Ag-YBa{sub 2}Cu{sub 3}O{sub 7{minus}x} contacts at the capacitor pads was found to dominate the loss in the resonator. {copyright} {ital 1997 American Institute of Physics.}
- OSTI ID:
- 508929
- Journal Information:
- Applied Physics Letters, Vol. 70, Issue 22; Other Information: PBD: Jun 1997
- Country of Publication:
- United States
- Language:
- English
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