Precise microwave characterization of MgO substrates for HTS circuits with superconducting post dielectric resonator
Mazierska, Janina, Ledenyov, Dimitri, Jacob, Mohan V., and Krupka, Jerzy (2005) Precise microwave characterization of MgO substrates for HTS circuits with superconducting post dielectric resonator. Superconductor Science & Technology, 18 (1). pp. 18-23.
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Abstract
Accurate data of complex permittivity of dielectric substrates are needed for efficient design of HTS microwave planar circuits. We have tested MgO substrates from three different manufacturing batches using a dielectric resonator with superconducting parts recently developed for precise microwave characterization of laminar dielectrics at cryogenic temperatures. The measurement fixture has been fabricated using a SrLaAlO3 post dielectric resonator with DyBa2Cu3O7 end plates and silver-plated copper sidewalls to achieve the resolution of loss tangent measurements of 2 × 10^−6. The tested MgO substrates exhibited the average relative permittivity of 9.63 and tanδ from 3.7 × 10^-7 to 2 × 10^-5 at frequency of 10.5 GHz in the temperature range from 14 to 80 K.
| Item ID: | 4531 |
|---|---|
| Item Type: | Article (Research - C1) |
| ISSN: | 1361-6668 |
| Keywords: | dielectric resonators; high temperature superconductors; MgO substrates; microwave characterisation; superconductivity; surface resistance |
| Date Deposited: | 15 Jun 2009 05:03 |
| FoR Codes: | 09 ENGINEERING > 0912 Materials Engineering > 091201 Ceramics @ 100% |
| SEO Codes: | 97 EXPANDING KNOWLEDGE > 970102 Expanding Knowledge in the Physical Sciences @ 60% 86 MANUFACTURING > 8617 Communication Equipment > 861799 Communication Equipment not elsewhere classified @ 40% |
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