It is inverted U-shaped on the ground by opening and beacon transmitter/reception machine testing radio-frequency recognition system that there is non-closed loop to be formed for detection people/animal/object and electronic marker.

摘要

The invention concerns an antenna for use as transmission/reception beacon ( 2 ), in a radio frequency identifying system, having a general upturned U configuration, located in a vertical plane, above the ground transversely to a passage ( 9 ), the vertical end portions ( 8 b, 8 c). The invention is applicable to a system for detecting, over a large width (L), the passage of people, animals or objects bearing electronic tags ( 7 ).