Frequency multiplexed radio frequency identification

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United States of America Patent

PATENT NO 11088812
SERIAL NO

16744895

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Abstract

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A radio frequency identification (RFID) system includes an RFID interrogator configured for generating an RFID signal, wherein a channel frequency of the RFID signal changes over time; at least one patch antenna; and at least one feed line configured for feeding the signal to the corresponding at least one patch antenna. In another exemplary embodiment, an RFID interrogator configured for generating an RID signal, wherein a channel frequency of the RFID signal changes over time; at least one transmission line; and a diplexer coupling the RFID interrogator and the 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.

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Patent Owner(s)

Patent OwnerAddress
UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION300 E STREET SW WASHINGTON DC 20546

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fink, Patrick W Missouri City, US 67 949
Kennedy, Timothy F Sugar Land, US 23 275
Lin, Gregory Y Friendswood, US 23 275
Ngo, Phong H Friendswood, US 32 845

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