Intrusion detector
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United States of America Patent
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-
Nov 15, 1983
Grant Date -
N/A
app pub date -
May 21, 1981
filing date -
May 21, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An intrusion detector is provided having transmission and receiving cables wherein the cables are leaky from an RF standpoint so that a portion of the RF energy from the transmission cable escapes and is picked up on the receiving cable. Both sine and cosine signals are detected. The cables can be buried.
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