Abstract: A transmission type antenna includes a transmission type structure for transmitting and radiating an incident radio wave, a power feeding body for radiating the radio wave to the transmission type structure or receiving the incident radio wave, a drive shaft for moving or tilting the power feeding body, a body for providing a moving path of the power feeding body through the drive shaft, and a control unit, connected through the drive shaft to the power feeding body, for controlling the movement and tilt of the drive shaft to thereby determine the tilling direction of the power feeding body.

Abstract: A transmission type antenna includes a transmission type structure for transmitting and radiating an incident radio wave, a power feeding body for radiating the radio wave to the transmission type structure or receiving the incident radio wave, a drive shaft for moving or tilting the power feeding body, a body for providing a moving path of the power feeding body through the drive shaft, and a control unit, connected through the drive shaft to the power feeding body, for controlling the movement and tilt of the drive shaft to thereby determine the tilling direction of the power feeding body.

Abstract: Provided are an RFID operating system and an RFID system operating method for allowing multiple RFID readers to read tags without collision. The RFID system operating method includes the steps of grouping RFID readers spaced apart by more than a spacing distance capable of avoiding collision between RFID readers into a single group to determine at least one group, classifying RPM readers included in each group into at least one sub-group based on a read time of each RFID reader, and driving the RFID readers such that RPM readers belonging to at least two different sub-groups that do not collide with each other simultaneously operate. According to the present invention, switching is performed sub-group by sub-group to reduce the number of switching operations and sub-groups can simultaneously operate to decrease a read time.

Abstract: Provided are an RFID operating system and an RFID system operating method for allowing multiple RFID readers to read tags without collision. The RFID system operating method includes the steps of grouping RFID readers spaced apart by more than a spacing distance capable of avoiding collision between RFID readers into a single group to determine at least one group, classifying RPM readers included in each group into at least one sub-group based on a read time of each RFID reader, and driving the RFID readers such that RPM readers belonging to at least two different sub-groups that do not collide with each other simultaneously operate. According to the present invention, switching is performed sub-group by sub-group to reduce the number of switching operations and sub-groups can simultaneously operate to decrease a read time.

Abstract: Disclosed herein is a direct feeding type patch antenna. The direct feeding type patch antenna according to the present invention comprises: a feed element 110 having direct feeding points 118 formed radially in opposite perpendicular directions to one another from a feeding central portion 120; four direct feeding cylindrical pillars 130 electrically connected at one ends thereof to the direct feeding points 118; and a radiation patch 140 disposed opposite to the feed element 110 and electrically connected to the other ends of the direct feeding cylindrical pillars 130, for allowing an electrical signal to be directly fed thereto. The direct feeding type patch antenna further comprises a coupler made of a ceramic material. According to the present invention, it is possible to implement a patch antenna which has a high gain and an improved axial ratio bandwidth, and is small-sized.