Omni-directional shear-horizontal wave magnetostrictive patch transducer and method of winding coil

摘要

Provided is a transducer. The transducer includes a permanent magnet that generates a magnetostatic field, a patch disposed below the permanent magnet and formed of a material that deforms according to a magnetic field, an insulator disposed on a top surface of the patch, and a coil wound around the patch and the insulator in a certain form and allowing a magnetomotive field to be induced on the patch according to an applied current. The wound coil has a form in which directions of the magnetostatic field generated by the permanent magnet and the magnetomotive field generated by winding the coil are orthogonal to each other.