Two-layer interdigital transducer for acoustic-surface-wave devices |
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Authors: | Harada H Gunshor RL |
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Affiliation: | Purdue University, School of Electrical Engineering, West Lafayette, USA; |
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Abstract: | Using photomasks with the same resolution as for conventional transducers, it is shown that a 2-layer interdigital transducer doubles the operating frequency of acoustic-surface-wave devices, at the sacrifice of some increase in conversion loss. The origin of the increased loss is attributed to a geometrical factor and a dielectric loss in the insulating layer. |
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