Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2001 · 12 citations · 0 references
Wireless CommunicationsEngineeringRadio FrequencyWearable TechnologyEducationImage Spatial ResolutionElectromagnetic CompatibilityHardware SecurityWireless SecurityComputational ElectromagneticsInstrumentationKa BandRadiologyRadio EngineeringAntennaDigital ImagingMillimeter Wave TechnologySecurity ScanningRadarMillimeter WavesMillimeter WaveTechnology
It has been known for some time that millimeter waves can pas through clothing. In short range applications such as in the scanning of people for security purposes, operating at Ka band can be an advantage. The penetration through clothing is increased and the cost of the equipment when compared to operation at W band. In this paper a Ka band mechanically scanned imager designed for security scanning is discussed. This imager is based on the folded conical scan technology previously reported. It is constructed from low cost materials such as polystyrene and printed circuit board. The trade off between image spatial resolution and the number of receivers will be described and solutions, which minimize this number discussed.