Millimeter-wave interferometry: an attractive technique for fast and accurate sensing of civil and mechanical structures

Seoktae Kim; Cam Nguyen

doi:10.1117/12.2048726

10 April 2014 Millimeter-wave interferometry: an attractive technique for fast and accurate sensing of civil and mechanical structures

Seoktae Kim, Cam Nguyen

Author Affiliations +

Proceedings Volume 9062, Smart Sensor Phenomena, Technology, Networks, and Systems Integration 2014; 90620E (2014) https://doi.org/10.1117/12.2048726
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2014, San Diego, California, United States

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.

Citation Download Citation

Seoktae Kim and 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); https://doi.org/10.1117/12.2048726

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