Abstract
The authors give the principle of operation of an acoustoelectric convolver and study two types of convolvers using Bleustein-Gulyaev surface waves, determining their internal admittances. These two types differ from one another in the manner in which the convolved signal is detected. In the first type, one detects the component parallel to the propagation surface of the current density vector and in the second, the component normal to it. The theoretical calculation of the admittances agrees satisfactorily with the experimentally obtained results of the figures of merit. In the light of the obtained results, it is shown that the detection of the normal component is much more convenient than that of the parallel one.
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