Antenna Impedance-Based Apparatus and Method for Detecting a Breach in the Integrity of a Container
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United States of America Patent
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Issued Date -
Jul 8, 2010
app pub date -
Feb 22, 2005
filing date -
Feb 22, 2005
priority date (Note) -
Abandoned
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Abstract
A security breach in the integrity of a container (10), such as a cargo container or a security vault, is detected using an apparatus (12) formed of a transmitter (18) and a processor (20). The transmitter (18) includes an antenna (26) that radiates electromagnetic waves from within the container (10). The processor (20) measures an impedance of the antenna (26) and produces an alarm if the impedance of the antenna (26) strays indicating a security breach in the integrity of the container (10).
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