Title :
Investigation of a new wide-band transducer with piezoelectric layered ring
Author_Institution :
Dept. of Radio Eng., Southeast Univ., Nanjing, China
Abstract :
A type of transmitting transducer with a piezoelectric layered ring is described. It is wide band, applicable to low-frequency operation, and has horizontal nondirectivity. Theoretical analysis and structural design are both discussed. Experimental results show: (1) the flat and smooth transmitting frequency response of the experimental transducer ranges from 9 to 20 kHz with the fluctuation not exceeding +or-1 dB; (2) within this wide band the electroacoustic efficiency reaches 30%-60%; and (3) when a small signal is used as excitation, the theoretical frequency response curve coincides very well with the experimental curve.<>
Keywords :
frequency response; piezoelectric transducers; ultrasonic transducers; 30 to 60 percent; 9 to 20 kHz; electroacoustic efficiency; horizontal nondirectivity; low-frequency operation; piezoelectric layered ring; structural design; transmitting frequency response; transmitting transducer; wide-band transducer; Acoustic transducers; Aluminum alloys; Frequency response; Impedance; Piezoelectric transducers; Q factor; Resonance; Resonant frequency; Underwater acoustics; Wideband;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
