Millimeter-Wave Reflect-Array for Compressive Threat Detection in Security Screening Applications

Case ID:

University of Arizona inventors have created a security screening technology that uses a reconfigurable millimeter-wave reflect-array with compressive sensing to detect threats including guns, knives, explosives, liquids, gels, and more.


The need to modernize and improve passenger security screening has been a topic of conversation across the aviation industry for many years. Long lines, complexity of rules, and often-invasive processes are a significant burden to people undergoing checkpoint security worldwide. There is a lack of real time, effective, compact, and low-cost security screening.


  • Security screening for people
  • Security screening of luggage
  • Scanning for security threats in airports, train stations, subway stations, and at large public events
  • Emergency security screening applications
  • Geotechnical and mining field scanning


  • More effective at scanning thick articles of clothing and shoes while worn
  • Decreases queue times
  • Streamlines checkpoint processes
  • Reduces cost due to parallel processing
  • Scans efficiently and quickly 

Status: issued U.S. patent #9,970,870

Patent Information:
Contact For More Information:
Tariq Ahmed
Sr Licensing Manager, College of Engineering
The University of Arizona
Lead Inventor(s):
Hao Xin
Tim Harvey
Min Liang
Mark Neifeld