发明名称 |
Arrangement of antennae in an electronic article surveillance (EAS) system and method thereof |
摘要 |
An antenna system for an electronic article surveillance system comprises a first antenna and a second antenna, the first antenna and the second antenna mounted for use in an substantially overlapping manner (14), the first antenna configured as a loop, the second antenna configured in a "figure-8"; and a control circuit for alternatively activating the first and second antennas. The first and second antennas each operate as a transmit and receive antenna. The control circuit further comprises a switch to selectively enable operation of one of the antennas when the other is open circuit. The loop antenna substantially detects markers oriented substantially perpendicular to an elongated axis (16) when entering into a surveillance area. The "figure-8" antenna substantially detects markers oriented substantially parallel to the elongated axis (16) when entering into a surveillance area. <IMAGE>
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申请公布号 |
EP1357635(A1) |
申请公布日期 |
2003.10.29 |
申请号 |
EP20030252495 |
申请日期 |
2003.04.17 |
申请人 |
YANG, XIAOHUI;FUSS, ARTHUR |
发明人 |
YANG, XIAO HUI;FUSS, ARTHUR |
分类号 |
G08B13/24;H01Q1/22;H01Q7/00;H01Q7/08;(IPC1-7):H01Q7/00 |
主分类号 |
G08B13/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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