Nonlinear response of Gb-Ba-Cu-O and Y-Ba-Cu-O microstrip resonators on sapphire
| Autor: | F. Ratzel, Reinhard Schneider, J. Geerk, R. Smithey, B. W. Tao, A. G. Zaitsev, G. Linker |
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| Rok vydání: | 2003 |
| Předmět: |
Microwave surface resistance
Materials science High-temperature superconductivity Analytical chemistry Microstrip resonators Atmospheric temperature range Condensed Matter Physics Universal relation Electronic Optical and Magnetic Materials law.invention law Superconducting resonators Sapphire Electrical and Electronic Engineering Sheet resistance |
| Zdroj: | IEEE Transactions on Appiled Superconductivity. 13:336-339 |
| ISSN: | 1051-8223 |
| Popis: | HF power-induced nonlinear effects, including the two-tone intermodulation distortion (IMD), were examined by using 2.3 GHz microstrip resonators prepared from double-sided YBa/sub 2/Cu/sub 3/O/sub 7-x/ (YBCO) and GdBa/sub 2/Cu/sub 3/O/sub 7-x/ (GBCO) films on CeO/sub 2/ buffered sapphire. Both, the YBCO and the GBCO resonators exhibited similarly high performance with low IMD level. The third-order interception points varied linearly with temperature from P/sub TOI//spl ap/1500 W of the circulating power, P/sub circ/, at 4.2 K to P/sub TOI//spl ap/90 W at 77.4 K. The dependence of the IMD products on the P/sub circ//P/sub TOI/ ratio was found to be the same at all measurement temperatures. Similarly, the variation of the microwave surface resistance /spl Delta/R/sub S/ versus P/sub circ//P/sub TOI/ was found to be temperature-independent. The combination of these dependences provided a universal relation between the power of the IMD signals and /spl Delta/R/sub S/, which was exhibited by both YBCO and GBCO resonators in the entire examined temperature range. |
| Databáze: | OpenAIRE |
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