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Hagelauer, Amelie ; Weigel, Robert ; Link, A. ; Bader, Bernhard ; Marksteiner, S. ; Wagner, Karl C.:
Improved Modeling of Bulk Acoustic Wave Resonators and Filters.
In:
2010 IEEE International Ultrasonics Symposium. -
Piscataway, NJ
: IEEE
,
2010
. - S. 857-860
ISBN 978-1-4577-0382-9
DOI: https://doi.org/10.1109/ULTSYM.2010.5935472
Abstract
Duplexers and filters for mobile radio are one of the classic field of application for the BAW technology. In recent years the size of the devices has been reduced by about a half and the trend is still toward more compact designs with higher performance at the same time. This translates directly to very demanding requirements on the effective coupling coefficient and on the quality factors of the underlying BAW resonators. Measurements show that the size and the shape of the resonators have a significant influence on the overall performance. Hence, size-relevant effects need to be considered in ID-simulation, which is the base for fast filter optimization. To evaluate the influence of the resonator size on the filter performance we analyzed several SMR-BAW resonator area and shape variations in combination with different overlap sizes in a series of experiments. Moreover, the influence of the overlap size on different resonator areas is studied with 2D-FEM simulations. In this paper we present the results of our resonator measurements. The results are basis for developing a modified ID model for designing BAW filters. Additionally, a new method for the extraction of an 'equivalent acoustic impedance' for the description of the acoustics is presented and compared to the modified ID-model.
Weitere Angaben
| Publikationsform: | Aufsatz in einem Buch |
|---|---|
| Begutachteter Beitrag: | Ja |
| Institutionen der Universität: | Fakultäten > Fakultät für Ingenieurwissenschaften Fakultäten > Fakultät für Ingenieurwissenschaften > Ehemalige Professoren > Lehrstuhl Kommunikationselektronik - Univ.-Prof. Dr.-Ing. Amélie Marietta Hagelauer Fakultäten Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Kommunikationselektronik Fakultäten > Fakultät für Ingenieurwissenschaften > Ehemalige Professoren |
| Titel an der UBT entstanden: | Nein |
| Themengebiete aus DDC: | 600 Technik, Medizin, angewandte Wissenschaften 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften |
| Eingestellt am: | 27 Sep 2019 09:41 |
| Letzte Änderung: | 10 Aug 2022 12:56 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/52397 |