| Autor: |
Osamu Ikata, Takashi Matsuda, Hidema Uchishiba, Y. Satoh, Tokihiro Nishihara |
| Rok vydání: |
2002 |
| Předmět: |
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| Zdroj: |
1995 IEEE Ultrasonics Symposium. Proceedings. An International Symposium. |
| DOI: |
10.1109/ultsym.1995.495603 |
| Popis: |
This paper describes the improvement in power durability of SAW filters in terms of filter designs and electrode materials. In this study, we used the previously reported ladder-type filter composed of one-port SAW resonators. For filter design, short aperture length and reduction of resonant resistance improved power durability. We clarified the frequency dependence of chip temperature and lifetime in a ladder-type filter. For electrode materials, Cu sandwiched film has high power durability. This is caused by stone-wall-like structure and alloy formation in intermediate layers. The optimum Cu quantity for multi-layered film was significant for high power durability. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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