Solution of a homogeneous integral difference-kernel equation for charge density in a surface-acoustic-wave transducer

The range of definition of the Green function for the surface acoustic wave potential is accurately specified. The problem of charge distribution is solved, taking into account wave amplitude variations under the electrodes of an inter digital transducer. The initial integral difference-kernel equation which models the charge distribution under the infinite-length electrode is reduced, by partial integration, to a difference-difference equation whose solution is obtained in closed form.