Surveillance system employing a dual function floor mat radiator

Details Surveillance system employing a dual function floor mat radiator Surveillance system employing a dual function floor mat radiator

1981-04-07

1984-02-07

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

340562, 343 65SS, G08B 1324

Patent

active

044306458

ABSTRACT:
A microstrip antenna is incorporated in a floor mat, the latter consisting of a conductive grid laminated to a conductive sheet with a layer of dielectric material therebetween to form a capacitor. The microstrip antenna is connected to a source of microwave energy for the purpose of radiating a microwave signal through a surveillance area. A low frequency signal is applied to the capacitor section of the mat for direct capacitive coupling through the body of a pedestrian to any surveillance tag carried thereupon.

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Bahl, I. J. et al., Microstrip Antennas, pp. 157-163, Artech House.

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