Gate system

摘要

Disclosed is a gate system arranged on two gate frames and detects a tag passing between the two gate frames, the gate system including at least two gate frames that are vertically arranged facing with each other; at least two antenna units that are arranged on the at least two gate frames, respectively; and a reader that is arranged on each of the at least two gate frames and enables the at least two antenna units to emit electromagnetic wave to an article passing between the at least two gate frames using a predetermined frequency signal, and obtains information stored in a tag using a signal that the at least two antenna units receives from the at least two antenna units.

主权项

1. A gate system comprising:
first and second gate frames vertically arranged such that they face each other; a first antenna unit in the first gate frame and a second antenna unit in the second gate frame, the first and second antenna units configured to emit signals; and a reader connected to each of the first and second antenna units and configured to control the first and second antenna units to emit the signals to a tag located on an article passing between the first and second gate frames and to obtain information stored in the tag based on a signal that the first and second antenna units receive from the tag, wherein each of the first and second antenna units includes: a ground plate having both end portions bent from a center portion of the ground plate at a predetermined angle; a plurality of unit antennas on a surface of the ground plate, the plurality of unit antennas directly attached to the ground plate; and an absorber on the ground plate, the absorber covering an area of the ground plate on which the plurality of unit antennas is not located.