11 May 2018 Thin film partial reflectors for generating contrast in millimeter wave images
Author Affiliations +
Depth resolution and contrast (grayscale) resolution test objects have been proposed for incorporation into an ANSI standard for image quality of active millimeter wave (MMW) imagers for screening humans. A design for a depth resolution target has required the need for a thin film to generate a reflection while allowing for metal targets behind it to be visible to MMW imagers. Materials to accomplish this task have been identified, essentially acting as a millimeter wave beam splitter. Images obtained with a wide-bandwidth MMW imaging system are discussed. Additionally, by altering the resistivity of the thin film, the reflection coefficient of the film changes, allowing these films to be used as a contrast phantom for the testing of millimeter wave imaging systems. Measurements using laboratory millimeter wave systems are in good agreement with theory, and an image collected with a commercially-available MMW imaging systems is presented.
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jeffrey Barber, Jeffrey Barber, Peter R. Smith, Peter R. Smith, Lindsey Gray, Lindsey Gray, Angel Yam, Angel Yam, Joseph Greca, Joseph Greca, Kevin Yam, Kevin Yam, James C. Weatherall, James C. Weatherall, Duane Karns, Duane Karns, Barry T. Smith, Barry T. Smith, } "Thin film partial reflectors for generating contrast in millimeter wave images", Proc. SPIE 10634, Passive and Active Millimeter-Wave Imaging XXI, 106340I (11 May 2018); doi: 10.1117/12.2306335; https://doi.org/10.1117/12.2306335

Back to Top