| 摘要 |
The invention concerns a transducer with surface acoustic waves, said to have low gap, having a free surface between consecutive electrodes, thereby capable of operating at very high frequency (of the order of several Giga Hertz). The invention is characterised in that said transducer further comprises an array of etchings separated by mesa in the substrate. Said array is covered with a metal coating, constituting the electrodes, thereby enabling to obtain the transducer directly. The invention is applicable to surface acoustic wave filter.
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