发明名称 |
System and method for sensitivity optimization of RF receiver using adaptive nulling |
摘要 |
The present invention provides sensitivity enhancement for a single antenna RFID interrogating device by separately coupling a nulling signal formed using a portion of a transmit signal into a receiver. The phase and amplitude of nulling signal can be adjusted so that the nulling signal cancels that a reflected transmit signal from the antenna, resulting in the small backscattered signal from the distant RFID tag to be more easily detected, and improving the sensitivity of the RFID receiver.
|
申请公布号 |
US2006033607(A1) |
申请公布日期 |
2006.02.16 |
申请号 |
US20050116494 |
申请日期 |
2005.04.27 |
申请人 |
THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY |
发明人 |
BELLANTONI JOHN V. |
分类号 |
H04Q5/22;G06K7/00;G08B13/14;H01L23/62 |
主分类号 |
H04Q5/22 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|