Wavelength division sensing RF vibrometer

Yan Yan, Changzhi Li, Jennifer A. Rice, Jenshan Lin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

9 Scopus citations


A wavelength division sensing RF vibrometer which is implemented as a tunable carrier frequency Doppler radar sensor was used for the first time to accurately measure mechanical vibrations of complex patterns. The amplitude ratio of a pair of baseband harmonics under different carrier wavelengths was used to obtain the vibration patterns. A software-controlled PLL was built to generate carrier frequencies from 5.5 to 6.5 GHz. The accuracy of the recovered vibration pattern using the noncontact RF vibrometer rivals other contact measurement instruments, such as LVDT and accelerometer.

Original languageEnglish
Title of host publication2011 IEEE MTT-S International Microwave Symposium, IMS 2011
StatePublished - 2011
Event2011 IEEE MTT-S International Microwave Symposium, IMS 2011 - Baltimore, MD, United States
Duration: Jun 5 2011Jun 10 2011

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
ISSN (Print)0149-645X


Conference2011 IEEE MTT-S International Microwave Symposium, IMS 2011
Country/TerritoryUnited States
CityBaltimore, MD


  • Accelerometer
  • Doppler radar
  • Linear Variable Differential Transformer (LVDT)
  • harmonic
  • noncontact
  • nonlinear
  • quadrature
  • vibration
  • wavelength division


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