发明名称 |
SYSTEMS AND METHODS FOR AN RF NULLING SCHEME IN RFID |
摘要 |
Systems and methods for an RF nulling scheme are provided. An RF nulling scheme can minimize the level of unwanted RF signal reflections entering the receiver without attenuating the desired signal response from an RFID tag. In one aspect of the RF nulling scheme a synthesizer signal can be split between a main path and a nulling path. In the nulling path the signal from the splitter can be routed through an electronically variable phase shifter and variable gain amplifier to create a nulling signal. The nulling signal can cancel the unwanted reflected signal. The phase or amplitude of the nulling signal can then be adjusted to improve cancellation as necessary.
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申请公布号 |
WO2007033343(A3) |
申请公布日期 |
2007.06.07 |
申请号 |
WO2006US35900 |
申请日期 |
2006.09.14 |
申请人 |
NEOLOGY, INC.;MIKUTEIT, ERIC |
发明人 |
MIKUTEIT, ERIC |
分类号 |
H04Q5/22 |
主分类号 |
H04Q5/22 |
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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