论文信息 - HTS/Ferroelectric CPW Structures for Voltage Tuneable Phase Shifters

HTS/Ferroelectric CPW Structures for Voltage Tuneable Phase Shifters

Coplanar waveguides (CPW) based on single and multilayered ferroelectric films with high-Tc superconducting (HTS) and golden electrodes have been investigated in the frequency range between 40 MHz and 40 GHz with the goal of designing voltage tuneable phase shifters operating at cryogenic temperatures. Tuneability and losses are investigated as function of temperature and voltage. The quality factor of a tuneable component K is introduced and discussed. The results obtained are promising for design of voltage controlled analog phase shifter.

[1] S. Rudner,et al. HTS/ferroelectric devices for microwave applications , 1997, IEEE Transactions on Applied Superconductivity.

[2] Spartak Gevorgian,et al. Electrically Controlled HTSC/Ferroelectric Coplanar Waveguide , 1994 .

[3] James A. Beall,et al. Characterization of a tunable thin film microwave YBa2Cu3O7−x/SrTiO3 coplanar capacitor , 1993 .

[4] O. Vendik,et al. High-T c superconductivity: New applications of ferroelectrics at microwave frequencies , 1993 .

[5] U. Poppe,et al. Microwave surface resistance of epitaxial YBa2Cu3O7 thin films at 18.7 GHz measured by a dielectric resonator technique , 1992 .

[6] O G Vendik,et al. Microwave Signal Limiters and Commutators Based on Superconducting Films , 1991, 1991 21st European Microwave Conference.

[7] S. Kawakami. Lossless Reciprocal Transformation and Synthesis of a Two-State Network , 1966 .

[8] Z. Ivanov,et al. Experimental Study of Thin Film HTS/Ferroelectric CPW Phase Shifters for Microwave Applications , 1997 .

[9] O. G. Vendik,et al. Dielectric nonlinearity of the displacive ferroelectrics at UHF , 1976 .