| 摘要 |
An RFID system (10) has an interrogator (11), an interrogator antenna (12) connected to the interrogator (11), for transmitting a signal, a radio wave reflecting plate (21) reflecting the signal transmitted from the interrogator antenna (12) and including a part of a parabolic curve or a curve similar thereto, and a radio frequency tag (13) responding an receiving the signal from the interrogator antenna (12) via at least the radio wave reflecting plate (21) and communicating with the interrogator (11). A signal having passed without being applied to the radio frequency tag (13) is reflected toward the inside of the radio wave reflecting plate (21) by the radio wave reflecting plate (21) . Therefore, the signal is prevented from scattering, so that the signal from the interrogator antenna (12) is effectively utilized. <IMAGE>
|
