| Autor: |
Heli Jantunen, T. Tick, Vamsi Krishna Palukuru, Jani Peräntie, M. Komulainen |
| Rok vydání: |
2010 |
| Předmět: |
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| Zdroj: |
Journal of the European Ceramic Society. 30:389-394 |
| ISSN: |
0955-2219 |
| Popis: |
A tunable microwave phase shifter composed of a low-sintering-temperature, screen-printable barium strontium titanate (BST) film and silver metallization was fabricated on an alumina substrate and co-fired at 900 °C for 3 h. The dielectric properties of the films were characterized in a frequency range of 0.8–8 GHz using scattering parameter measurements and a quasi-static coplanar waveguide transmission line model. The temperature dependency of the films was measured through capacitance measurements in a frequency range of 0.5–2.5 GHz. The figure of merit (phase shift/dB of insertion loss) of the phase shifter was found to be 14.6 at 3 GHz with an applied bias field strength of 2.5 V/μm. The performance of the phase shifter is briefly discussed and compared with other phase shifters fabricated by direct screen-printing of BST films. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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