Influence of Transducer Array on Directivity of Acoustic Fields

Based on the point source directivity function,the directivity functions of a finite area ultrasonic transducer and rectangular arrays of these transducers are obtained.Then,the directivity of the single transducer and the transducer arrays are studied.The influences of array element area,inter-element spacing and the number of elements on the ultrasonic transducer array directivity are calculated and analyzed,which may be helpful for the control of high directivity noise and the countermeasure of acoustic weapon.