The Analysis Method for the Mechanical Radiator with Converse Magneto-electric Effect

Abstract

The theoretical analysis method for the laminated composites as a VLF radiator is given. The relation between the acoustic wave inside the material and EM wave outside is established. In condition of the typical material parameters given in other published work, the computed equivalent magnetic dipole moment with the method is in substantial agreement with the result from the experiment in preceding work. The calculated near field in the range less than 100 m is given for free space and half space condition. The field intensity decays with r3, and the magnetic flux intensity of more than 10 fT at 100 m can be obtained for both situations. This mechanical radiator has potential applications in near field communications at VLF band or above.