Electronic identification system

Details Electronic identification system Electronic identification system

G - Physics

01

S

343/19

G01S 13/74 (2006.01)

Patent

CA 1040292

ELECTRONIC IDENTIFICATION SYSTEM ABSTRACT OF THE DISCLOSURE An electronic detection and identification system operating with coherent microwave frequencies wherein a transmitter continuously transmits a beam of electromagnetic energy, in a predetermined direction, so as to impinge on an identification tag suitably attached on a passing object. The identification tag derives a harmonic signal from the impinging beam and radiates a beam of energy, at the harmonic frequency, which is pulse modulated in accordance with a preset identification code. The receiver receives the reflected beam and detection means therein generates signals repre- sentative of the code modulation. Other detection means in the receiver responds to electromagnetic energy which has been reflected without modulation from the tag for generating other output signals. Output processing means is provided to receive and process signals from both detecting means. -1-

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