Radiation Impedance for the Elements of a Cylindrical Transducer Idealized as an Oblate Spheroid.

摘要

The transducer in question has the form of a right circular cylinder; the radiating elements of the transducer correspond to the curved surface of the cylinder, and the plane surfaces of the cylinder correspond to the top and bottom of the transducer, which are covered by rigid plates and are assumed to have no motion. The transducer elements have square, plane faces and form a mosaic; the total radiating surface comprises several hundred elements. Each element can be driven separately, and the problem is to calculate the mutual radiation impedance between any two elements, situated at arbitrary positions. From this information the impedance when more than one element is driven can be found easily by superposition.