Abstract:
A design method for the second order vector receiving transducer composed of a segmented ring is introduced in this paper, which has both the quasi-dipole directivity pattern and the quasi-quadrupole directivity pattern with sharper beam width. The directivity and sensitivity of the segmented ring is analyzed by theoretical calculation and finite element simulation, and the second order vector receiving transducer based on the segmented ring is developed. The tests in an anechoic tank show that the measured sensitivity is in good agreement with the finite element simulation results. The -3 dB beam-widths of the quasi-dipole directivity pattern and the quasi-quadrupole directivity pattern are about 95° and 40° respectively. The beam width of the second order vector directivity pattern is sharper than that of the first order vector directivity pattern.