RADIATION-PATTERN OF A FOCUSED TRANSDUCER - A NUMERICALLY CONVERGENT SOLUTION

被引:47
作者
CHEN, XC
SCHWARZ, KQ
PARKER, KJ
机构
[1] UNIV ROCHESTER,DEPT MED,ROCHESTER,NY 14627
[2] UNIV ROCHESTER,DEPT ELECT ENGN,ROCHESTER,NY 14627
关键词
D O I
10.1121/1.407329
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
The radiation pattern of a focused transducer is reexamined. The radiation field is divided into an illuminated zone and a shadow zone. A numerically convergent solution of the pressure distribution in terms summations of Bessel functions is provided. This solution is computationally more advantageous than earlier results where a double or single integral in the complex plane is required. The pressure amplitude differs from earlier reports slightly for off-axis locations at low frequency. This difference may have significance for backscatter coefficient determination where scatterers are assumed present over a time-gated volume. The solution for a flat disk radiator is obtained as a limiting case.
引用
收藏
页码:2979 / 2991
页数:13
相关论文
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