Two-Dimensional Layered Analysis of a Surface Elastic Wave Amplifier Having A Segmented Drift Structure.

摘要

The authors report the use of a two-dimensional layered analysis to take into account the nonuniform electric field produced by surface drift electrodes in a surface-wave amplifier. The electric-field variation may be significant in the amplification of surface waves and in the other devices or studies where electrodes situated on a surface are employed. The analysis is here applied to the segmented drift-structure amplifier whose active region is divided into laminae within each of which bulk wave theory is applied. The gain calculated theoretically, being smaller than that predicted using the usual uniform field assumption, is found to be in good agreement with experimental measurements. (Author)