Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2740

Full Length Research Paper

Study on ringing effect in ultrasonic transducer

M. S. Salim1*, M. F. Abd Malek2, Naseer Sabri3 and K. M. Juni4
1School of Mechatronics Engineering, University Malaysia Perlis, Kangar, 01000, Malaysia. 2School of Electrical System Engineering, University Malaysia Perlis, Kangar, 01000, Malaysia. 3School of Computer and Communication Engineering, University Malaysia Perlis, Kangar, 01000, Malaysia. 4Electrical Engineering Department, Politeknik Tuanku Syed Sirajudain, Malaysia.
Email: [email protected]

  •  Accepted: 07 June 2012
  •  Published: 05 November 2012

Abstract

This paper presents theoretical experimental and evidence of the effect of internal resonance at silicon substrate in micro fabrication ultrasonic transducer. This ringing is clearly observed in immersion transducers with 4.2 MHz and harmonics. A mathematical analytical model of the attenuation yield by ringing effective and simulation is introduced. Experimental results are further compared to simulations carried out in time-domain and qualitative agreement is provided. This paper summarizes the theoretical measured, performance backing layer. Experiment and simulation proved that it is possible to design a custom backing material with acoustic impedance that decreases the ringing mode.

 

Key words: Capacitive micro-machined ultrasonic transducers (CMUT), ultrasound sensor, backing layer, attenuation.