Circulating power, RF magnetic field, and RF current density of shielded dielectric resonators for power handling analysis of high-temperature superconducting thin films of arbitrary thickness

Mazierska, Janina, and Grabovickic, Robert (1998) Circulating power, RF magnetic field, and RF current density of shielded dielectric resonators for power handling analysis of high-temperature superconducting thin films of arbitrary thickness. IEEE Transactions on Applied Superconductivity, 8 (4). pp. 178-187.

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Abstract

In the current quest for HTS films with negligible power effects at high RF power levels for wireless communications, accurate calculations of a maximum RF magnetic field H(max) and of a maximum RF current density J(max) flowing on the surface of superconducting films is necessary to allow for any sensible conclusions and comparisons. As the dielectric resonator method is used most frequently for investigation of HTS losses, the authors discuss in this paper a dependence of the circulating power and of a maximum RF magnetic field H(max) on dielectric resonators' geometry as well as of the maximum RF current density J(max) flowing on the surface of superconducting films on the films' thickness, for a general case of a resonator shielded in a metallic cavity. The authors' results demonstrate that under the same input power levels the same HTS films may be exposed to differing RF power level conditions, depending on the cavity to dielectric radius ratio and thickness of superconducting films. This means that there may be a significant discrepancy between calculated and real power handling capabilities of HTS films tested in different dielectric resonators unless correct formulas are used.

Item ID: 28151
Item Type: Article (Refereed Research - C1)
Keywords: circulating power RF magnetic field; high-temperature superconductors; surface resistance; dielectric resonators; power handling analysis; magnetic fields; superconducting films; current density; dielectric devices; electric resistance
ISSN: 1558-2515
Date Deposited: 07 Aug 2013 23:27
FoR Codes: 02 PHYSICAL SCIENCES > 0204 Condensed Matter Physics > 020404 Electronic and Magnetic Properties of Condensed Matter; Superconductivity @ 50%
09 ENGINEERING > 0906 Electrical and Electronic Engineering > 090699 Electrical and Electronic Engineering not elsewhere classified @ 50%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970102 Expanding Knowledge in the Physical Sciences @ 50%
97 EXPANDING KNOWLEDGE > 970109 Expanding Knowledge in Engineering @ 50%
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