Invention Grant
- Patent Title: RFID tag uncoupling one of its antenna ports and methods
- Patent Title (中): RFID标签解耦其天线端口之一和方法
-
Application No.: US10891894Application Date: 2004-07-14
-
Publication No.: US07667589B2Publication Date: 2010-02-23
- Inventor: Dimitri C. Desmons , Ronald A. Oliver , Christopher J. Diorio , Todd E. Humes
- Applicant: Dimitri C. Desmons , Ronald A. Oliver , Christopher J. Diorio , Todd E. Humes
- Applicant Address: US WA Seattle
- Assignee: Impinj, Inc.
- Current Assignee: Impinj, Inc.
- Current Assignee Address: US WA Seattle
- Agency: Turk IP Law, LLC
- Main IPC: G08B19/00
- IPC: G08B19/00
Abstract:
RFID tags have an on-chip antenna and an off-chip antenna. One of the antennas can become uncoupled if the proper signal is received, while the other antenna may still operate. The uncoupled antenna can be the larger one, for example the off-chip antenna. Then the tag can then be read only by the smaller antenna, which effectively reduces the range of the RFID tag, but without disabling it entirely.
Public/Granted literature
- US20050212674A1 RFID tag uncoupling one of its antenna ports and methods Public/Granted day:2005-09-29
Information query
