Synthesis Of Ultrasound Field Sources Based on Phase Screen Approximation

D Ya Sukhanov ,Nadezhda Erzakova,Kseniya Zavyalova

doi:10.1051/matecconf/201815501011

D Ya Sukhanov , Nadezhda Erzakova + Show 1 more

Open Access

https://doi.org/10.1051/matecconf/201815501011

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Abstract

Here is proposed the method for synthesizing the sources of an acoustic field on the basis of an approximation of the phase screen. The technology of manufacturing ultrasonic phased arrays providing the formation of a field of a given distribution is proposed. An experimental setup has been developed for the formation of a vortex field at a distance of 10 cm.

Highlights

The formation of an ultrasonic field of the required distribution is an urgent task in the development of ultrasonic sounding and tomography systems, technologies of acoustic levitation and remote particle control, augmented reality devices for the transmission of tactile information [1]
The required field distribution we define by following formula: U x, y exp i ikr / 2 r R1 r R2, (1)
We propose to reverse propagate only homogeneous waves

Summary

Introduction

The formation of an ultrasonic field of the required distribution is an urgent task in the development of ultrasonic sounding and tomography systems, technologies of acoustic levitation and remote particle control, augmented reality devices for the transmission of tactile information [1]. The main direction of solving similar problems is the use of phased arrays [2, 3] of ultrasonic radiators (Figure 1). A simpler solution is to use a single signal generator, which is fed through the delay lines to the emitters, thereby ensuring a phase difference between the elements.

Results

Conclusion