| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2011: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Research Abstract |
Surface acoustic wave (SAW) devices with higher frequency have been strongly demanded to realize the next generation mobile communication system. The longitudinal-type leaky surface acoustic wave (LLSAW) is one of the SAW modes that is advantageous for application to high-frequency SAW devices. However, the LLSAW has huge inherent losses. In this study, it has been found theoretically and experimentally for the LLSAW propagating on LiNbO3 substrate that, the losses due to bulk wave radiation can be considerably reduced by forming a reverse proton exchange layer or by loading with a dielectric thin film with a higher velocity than the substrate.
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