Microwave interferometer for non-destructive testing

J. Choi, S. Breugnot, T. Itoh

Research output: Chapter in Book/Entry/PoemConference contribution

3 Scopus citations


A K-band microwave interferometer for non-destructive sensing of high frequency low amplitude (nm) vibration is demonstrated. This sensor uses direct-conversion receiver architecture with a phase shifter to adjust its sensitivity while varying the target distance. Detection of nanoscale vibration and laser-generated ultrasound waves through thin aluminum plate are measured and then compared with the theoretical results.

Original languageEnglish (US)
Title of host publicationReview of Progress in Quantitative Nondestructive Evaluation
Number of pages8
StatePublished - 2010
Event36th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE - Kingston, RI, United States
Duration: Jul 26 2009Jul 31 2009

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Other36th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE
Country/TerritoryUnited States
CityKingston, RI


  • Lamb wave
  • Laser generated ultrasonic
  • Microwave interferometer
  • Noncontact
  • Nondestructive

ASJC Scopus subject areas

  • General Physics and Astronomy


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