A Study of the driving circuit for array transducer considering its impedance properties

Hayato Jimbo, Kota Goto, Shin Yoshizawa, Shin Ichiro Umemura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

A multi-channel array transducer can enlarge the treatment volume of HIFU (High-Intensity Focused Ultrasound), which is a noninvasive method for cancer therapy, by generating and scanning multiple foci. In our previous study, we developed a compact and highly efficient driving circuit using staircase wave voltage for typical single HIFU transducer that the impedance is almost real at the resonance frequency. However, an array transducer element can have too capacitive impedance that affects the output voltage waveform designed for reducing the harmonics components. To solve this problem, we propose a new circuit to drive an array transducer considering its imaginary impedance. The proposed circuit was able to reduce not only the odd harmonics but also electrical power consumption. Simulation of the relationship between the number of staircase wave steps and the power consumption proved that the total power consumption due to intentional turn-on decreased in proportion to the number of steps.

Original languageEnglish
Title of host publication2015 IEEE International Ultrasonics Symposium, IUS 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479981823
DOIs
Publication statusPublished - 2015 Nov 13
EventIEEE International Ultrasonics Symposium, IUS 2015 - Taipei, Taiwan, Province of China
Duration: 2015 Oct 212015 Oct 24

Publication series

Name2015 IEEE International Ultrasonics Symposium, IUS 2015

Other

OtherIEEE International Ultrasonics Symposium, IUS 2015
CountryTaiwan, Province of China
CityTaipei
Period15/10/2115/10/24

Keywords

  • HIFU
  • array transducer
  • driving circuit
  • impedance properties
  • power consumption

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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