Invention Grant
- Patent Title: Frequency multiplexed radio frequency identification
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Application No.: US15635843Application Date: 2017-06-28
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Publication No.: US10552651B1Publication Date: 2020-02-04
- Inventor: Patrick W. Fink , Gregory Y. Lin , Timothy F. Kennedy , Phong H. Ngo
- Applicant: United States of America as represented by the Administrator of the National Aeronautics and Space Administration
- Applicant Address: US DC Washington
- Assignee: United States of America as represented by the Administrator of the National Aeronautics and Space
- Current Assignee: United States of America as represented by the Administrator of the National Aeronautics and Space
- Current Assignee Address: US DC Washington
- Agent Kurt G. Hammerle; Edward K. Fein
- Main IPC: G06K7/10
- IPC: G06K7/10 ; H04L5/14 ; H04B1/713 ; H01Q15/00
Abstract:
A radio frequency identification (RFID) system for frequency multiplexing includes, in an exemplary embodiment, an RFID interrogator configured for generating an RFID signal, wherein a channel frequency of the RFID signal changes over time; at least one antenna or transmission line; and a diplexer coupling the RFID interrogator and the antennas or transmission lines and configured for distributing the RFID signal to each of the antennas or transmission lines, respectively, depending on the channel frequency of the RFID signal generated. The antennas or transmission lines are configured to transmit an electromagnetic wave in response to and at the channel frequency of the RFID signal distributed thereto. Other embodiments include RFID systems and methods including a frequency selective surface and both similar and different components and aspects for frequency multiplexing.
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