| 摘要 |
PROBLEM TO BE SOLVED: To provide a reader/writer antenna for communicating with an RFID tag, preventing the generation of a non-sensible zone or being capable of easily dealing with an area of a non-sensible zone.SOLUTION: A plurality of dipole antennas are disposed coaxially inside a cylinder-shaped radome in parallel to a center axis. A reflection plate is disposed opposite to the dipole antennas. The plurality of dipole antennas have impedance to make the phase of a radiating electromagnetic wave successively shift from one dipole antenna to another. |
