title: [Modeling and simulation of responses from ultrasonic linear phased array].
abstract: Phased array transducers are very attractive because the beam generated by the arrays can be electronically focused and steered. The present work characterizes far-field 2D properties of phased array system by functions that are deduced from rectangle source, rectangle line array and phased array based on point source. Results are presented for the distribution of ultrasound intensity on plane xoz and on x-axis by simulation using numerical calculation. It is shown that the shape of response of rectangle line array is modulated by the single array element. It is also demonstrated that the delay time of phased array is the key to steer the beam, sacrificing the value of main lobe and increasing the number of side lobes.
authors.affiliation: BME, Department of Medical Image, NSMC, Nanchong 637000, China.
authors.forename: Wenjing
authors.initials: W
authors.lastname: He
authors.forename: Yuanzhong
authors.initials: Y
authors.lastname: Zhu
authors.forename: Yufeng
authors.initials: Y
authors.lastname: Wang
authors.forename: Lingli
authors.initials: L
authors.lastname: He
authors.forename: Siyu
authors.initials: S
authors.lastname: Lai
mesh_terms: D003198:Computer Simulation; D008962:Models, Theoretical; D014159:Transducers; D014465:Ultrasonics / Q000295:instrumentation / Q000379:methods*