10 April 2014 Millimeter-wave interferometry: an attractive technique for fast and accurate sensing of civil and mechanical structures
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Abstract
This paper discusses the RF interferometry at millimeter-wave frequencies for sensing applications and reports the development of a millimeter-wave interferometric sensor operating around 35 GHz. The sensor is completely realized using microwave integrated circuits (MICs) and microwave monolithic integrated circuits (MMICs). It has been used for various sensing including displacement and velocity measurement. The sensor achieves a resolution and maximum error of only 10 μm and 27 μm, respectively, for displacement sensing and can measure velocity as low as 27.7 mm/s with a resolution about 2.7mm/s. Quick response and accurate sensing, as demonstrated by the developed millimeter-wave interferometric sensor, make the millimeter-wave interferometry attractive for sensing of various civil and mechanical structures.
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Seoktae Kim, Seoktae Kim, Cam Nguyen, Cam Nguyen, } "Millimeter-wave interferometry: an attractive technique for fast and accurate sensing of civil and mechanical structures", Proc. SPIE 9062, Smart Sensor Phenomena, Technology, Networks, and Systems Integration 2014, 90620E (10 April 2014); doi: 10.1117/12.2048726; https://doi.org/10.1117/12.2048726
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