Intrusion detection device
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United States of America Patent
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Aug 17, 1993
Grant Date -
N/A
app pub date -
May 14, 1992
filing date -
Nov 27, 1991
priority date (Note) -
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Abstract
Intrusion detection apparatus including a microwave transmitter comprising a generally unshielded dielectric resonating oscillator, whose parasitic field is radiated within a volume and Doppler detection apparatus for sensing received Doppler signals reflected by a moving object within the volume.
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