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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Zhgoon, S. Shvetsov, A. Patel, M.S. Bhattacharjee, K. |
| Copyright Year | 2009 |
| Description | Author affiliation: Department of Radio Engineering Fundamentals, Moscow Power Engineering Institute, Russia (Zhgoon, S.; Shvetsov, A.) || RF Micro Devices, Inc., Greensboro, NC, USA (Patel, M.S.; Bhattacharjee, K.) |
| Abstract | Longitudinal leaky surface (LLSAW) waves are interesting in high frequency wideband applications. It has been shown that with coating by SiO overlay the temperature stability of a wave on YZ LiNbO may be improved and useful characteristics can be obtained. In previous publication both theoretical and experimental results were presented on temperature compensation of longitudinal wave by SiO2 overlay. However, one intriguing feature was the gradual transformation of the longitudinal wave (LLSAW) into a “modified” LLSAW as the SiO thickness was increased. In this work an attempt has been undertaken to verify the validity of modeling results by in-situ monitoring of the frequency response of a resonator on YZ LiNbO during SiO sputtering. The in-situ monitoring provides a picture of gradual waning of the LLSAW mode and the birth of the “modified LLSAW” mode. The obtained dispersion data was compared to the modeled dispersion curves. The vanishing of the first mode and the birth of the subsequent mode were clearly observed in the monitored response. The validity of the modeling results has been confirmed. The modeled infinite periodic structure response with coating has been compared to the experimental response of a synchronous resonator. The initial LLSAW and the subsequent “modified” LLSAW modes predicted in modeling exist, and their change occurs by means of vanishing of the initial mode and the birth of the subsequent mode. The modeling in Comsol Multiphysics correctly predicts the main features of this wave in an almost quantitative way. |
| Starting Page | 2647 |
| Ending Page | 2650 |
| File Size | 916387 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424443895 |
| ISSN | 19485727 |
| DOI | 10.1109/ULTSYM.2009.5441418 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-09-20 |
| Publisher Place | Italy |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Monitoring Coatings Temperature Predictive models Surface waves Wideband Stability Frequency response Sputtering Periodic structures periodic structures LLSAW temperature compensation silicon dioxide lithium niobate finite element modeling resonator |
| Content Type | Text |
| Resource Type | Article |
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