Antenna used for radio frequency identification device system and configuration method thereof, and radio frequency identification reader-writer

The invention provides an antenna for an RFID (Radio Frequency Identification Device) system, which comprises a conductor line, wherein the conductor line comprises at least two loop parts and at least one connecting part, the at least two loop parts are configured along one loop and are discontinuous in the space; in every two successive loop parts, the tail end of the first loop part is connected with the starting end of the second loop part through a connecting part which is configured in a manner of departing from the loop; when an exciting signal is fed into the conductor line, the at least two loop parts and the at least one connecting part generate an exciting current, and the exciting current in the at least two loop parts further generates a magnetic field. Enough antenna size is realized in an UHF RFID through the antenna, and the requirement for reading distance of the UHF RFID reader-writer is met. In addition, the invention also provides a substituent solving scheme of the antenna, deformation and a configuration method thereof, and an RFID reader-writer with the antenna of the invention.