Patent ID: 8742930
Filing Date: 2014-06-03
Classification: G08B

Abstract:
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.