Abstract: The radiated sound field of traffic circle radial transducer is researched.After analyzing the pressure distribution of the sound field,it concludes that the pressure distribution of the traffic circle radial transducer is not radial but vertical,and the broader the ring size is,the more sidelobes there are,the sharper the mainlobe is.By discussing the near sound field distribution,it shows that there is a critical pole between the near field and the far field,and the variation of the critical p...

Key words: ultrasonic； transducer； radiated sound field； pressure distribution； near sound field distribution；