Passive detection apparatus
US8068049B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2006 |
| Grant date | Nov 29, 2011 |
| Priority date | — |
| Expiry date | Sep 19, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A passive detection device is disclosed comprising a plurality of antennas, receivers, and a digital beamformer, wherein the antennas and receivers are adapted to receive radiation of millimeter wavelengths from a near field region, to process and digitize it. The beamformer is adapted to process the received information and to generate static image information relating to the region. An indication means is provided to indicate the presence of objects of interest. The beamformer is preferentially adapted to generate information simultaneously in a plurality of planes at different distances from the apparatus. The indication means may comprise an array of pixels along the length of the apparatus to display image information, and may use the multi-planar information to construct images of the region comprising data from a plurality of planes. The invention has utility in security scanning applications such as at airports or other locations where security detection equipment is employed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.