(Jan. 25, 2010) The dielectric portal technology uses microwave energy to interrogate a passenger to detect the presence of metallic or nonmetallic objects. This scanner measures dielectric constant of a human body surface by means of the determination of the reflection coefficient of microwave radiation.

Product: Dielectric Portal Technology – Whole Body Imager

Description and Applications: The dielectric portal technology uses microwave energy to detect the presence of metallic or nonmetallic objects on a passenger. This scanner compares the subject to a programmed baseline for human physiology. If the subject varies from that baseline, the scanner signals a need for further examination. The shape of the object is not important. The decisive criteria for the automatic detection of an object are the size of the object, the density of the material and its absorption abilities.

Main Brand: The Dielectric People Portal II (PPII)

Radiation Description: Uses low level microwaves that are less than 1/1000th of allowed levels (non-ionizing and non-accumulative).

Radiation Dose: The measured level is less than that emitted by overhead fluorescent lights.

Competing Technologies:

Whole Body Imaging Backscatter Technology
Whole Body Imaging Active Millimeter Wave Technology
Whole Body Imaging Passive Millimeter Wave Technology

Health Concerns: The non-intrusive energy format has been shown to be radiologically safe for humans.

Cost: Information is not available

Detection Limitations: The disability to recognize and display a shape and a material of a hidden object. It does not detect explosives, and no image of the suspicious object is seen by the operator.

Public Resistance: Information is not available

Olena Loskutova, Energy Probe, January 25, 2010