Broadband Transducer for Diagnostics Using a Plano-Concave Ultrasonic Transducer Driven by Chirp Wave

• Tai Hidekazu

  Department of Electrical and Electronic Engineering, College of Engineering, Nihon University

• Kobayashi Tsutomu

  Department of Electrical and Electronic Engineering, College of Engineering, Nihon University

Abstract

In order to obtain tomographic images with high resolution by ultrasonic diagnostic equipment, a broadband transducer that enables one to widely change the center frequency and bandwidth of the radiation ultrasonic pulse using only a probe is investigated in this study. As it is generally difficult to widely change the frequency and bandwidth, we examined the possibility of using a plano-concave ultrasonic transducer and the chirp wave as its excitation pulse. As a result, it was clarified that the center frequency and bandwidth could be controlled freely over a wide frequency range in comparison with the conventional method by using the plano-concave transducer and the chirp wave modulated by amplitude.

Journal

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 42 (5B), 3031-3035, 2003

  The Japan Society of Applied Physics

Keywords

• broadband transducer
• plano-concave transducer
• frequency control
• chirp wave
• bandwidth enlargement
• ultrasonic diagnostics

Details

• CRID: 1390282681233462272
• NII Article ID: 10011097170
• NII Article ID: 210000053474
• NII Book ID: AA10457675
• DOI: 10.1143/jjap.42.3031
• ISSN: 13474065
• ISSN: 00214922
• NDL BIB ID: 6552294
• Web Site: http://id.ndl.go.jp/bib/6552294
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6552294
• Web Site: http://stacks.iop.org/1347-4065/42/i=5S/a=3031/pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed