发明名称 |
DISTRIBUTED ANTENNA ARRAY WITH CENTRALIZED DATA HUB FOR DETERMINING PRESENCE AND LOCATION OF RF TAGS |
摘要 |
<p>A distributed antenna array with a centralized data hub for determining the presence and location of RF tags has been disclosed. This antenna array centralizes electronics and distributes the RF to zones in a facility to greatly reduce the expense of recurring components for monitoring RF tags. A single BRT/hub with multiple antennas attached to transmit and receive ports is used to cover an entire facility. Large facilities are covered by a small number of the BRT/hub combinations. The BRT/hub has transmit antennas coupled thereto, preferably by co-axial cable, that transmit signals to a portion or all of the RF tags and all or a portion of them modulate and reflect the RF signal to a particular receiving antenna. The receiving antenna then returns the RF signal with tag data to the BRT/hub, preferably by co-axial cable. Also disclosed is a RF backscatter tag that cleanly switches a resonant aperture antenna on and off, thereby greatly increasing the mark-to-space ratio of the backscatter data. This enables tags to be detected by the BRT at much greater distances.</p> |
申请公布号 |
WO2006052386(A2) |
申请公布日期 |
2006.05.18 |
申请号 |
WO2005US37138 |
申请日期 |
2005.10.18 |
申请人 |
GOLIATH SOLUTIONS LLC. |
发明人 |
OVERHULTZ, GARY, L.;HARDMAN, GORDON, E.;PYNE, JOHN, W. |
分类号 |
G06K19/00 |
主分类号 |
G06K19/00 |
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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