2010 Fiscal Year Final Research Report
Surface acoustic wave substrate structure without bulk wave radiation free using reverse proton exchange and its application to low-loss and wide-band filter
| Project/Area Number |
20560293
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Electronic materials/Electric materials
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| Research Institution | University of Yamanashi |
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Principal Investigator |
KAKIO Shoji University of Yamanashi, 大学院・医学工学総合研究部, 准教授 (70242617)
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| Co-Investigator(Renkei-kenkyūsha) |
NAKAGAWA Yasuhiko 山梨大学, 大学院・医学工学総合研究部, 教授 (50006277)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 弾性表面波 / LiNbO_3 / 逆プロトン交換 / 低損失フィルタ / バルク波放射 |
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| Research Abstract |
For the development of high-performance surface acoustic wave (SAW) devices, the materials, substrate structures, and SAW modes required to realize high coupling, high stability, low loss, and high frequency have been widely demanded. In this study, it has been found theoretically and experimentally that, by adapting the substrate structure with a reverse-proton-exchanged layer and a buried proton-exchanged layer to a shear-horizontal-type leaky SAW and a longitudinal-type leaky SAW on LiNbO_3, the propagation and resonance properties can be considerably improved.
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