Crystalline structure HTS thin film and microwave performance of passive device

✍ Scribed by A.A. Dymnikov; O.D. Pustylnik; I.V. Voinovsky

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 117 KB
• Volume: 235-240
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(94)92225-x

✦ Synopsis

The YBa2Cn307. n films on sapphire are demonstrated. We used the phenomenological loss equivalence method to model microwave losses in ring resonators and bandpass filters at K-band, The results of calculations are presented along with comparison to experimental data and surface reststance R s at 135 GHz. The quality of these films depended on substrate preparation, film thickness, crystallographic orientation of the grains. Analysis of the temperature dependencies R s and X-ray dfffiactmn are presented. The typical R s at 135 GHz and converted to 34 GHz are 0.25 mOhm at 60 K that can design bandpass filters with insertion loss 1.2 dB.