Ultrathin RFID (Radio Frequency Identification Device) ground antenna arranged on floor slab

The utility model discloses an ultrathin RFID (Radio Frequency Identification Device) ground antenna arranged on a floor slab, which belongs to the technical field of radio frequency identification equipment and comprises a PCB (Printed Circuit Board), a coaxial connector, an oscillator mechanism and a feed network, the antenna also comprises an oscillator connecting line. The PCB is arranged to be in a long strip shape, and openings are formed in the two sides of the PCB in the length direction. A reflection copper-clad area is arranged on a PCB, a plurality of oscillator mechanisms are arranged on the reflection copper-clad area, and the plurality of oscillator mechanisms are connected in series through oscillator connecting lines; a feed network is arranged on the top surface of one end of the PCB, a coaxial connector is arranged on the PCB at the feed network, an inner conductor of the coaxial connector is connected with the feed network, and an outer conductor of the coaxial connector is electrically con