Six-Port microwave interferometer radar for mechanical vibration analysis

Vibration measurement and detection is of great interest for many sensor applications and stress diagnosis in diverse industrial environments. An innovative mechanical vibration analysis based on the Six-Port receiver as a microwave interferometer radar is hereby proposed. Due to the excellent phase discrimination properties of the Six-Port receiver a very high accuracy in the vibration detection can be reached. The basic technique with a comparison to todays state of the art, a hardware demonstrator and measurement results are hereby presented.