Invention Grant
US08390458B2 Wireless IC tag reader 有权
无线IC标签读卡器

Wireless IC tag reader
Abstract:
A wireless IC tag reader includes a receiving antenna, a transmitting antenna and a beam direction control unit. The receiving antenna has a maximum beam direction and a half-value angle. The transmitting antenna has a maximum beam direction and a half-value angle narrower than the half-value angle of the receiving antenna. The beam direction control unit changes the maximum beam direction of the transmitting antenna.
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