RFID REPEATER FOR RANGE EXTENSION IN MODULATED BACKSCATTER SYSTEMS
First Claim
1. A backscatter tag system including at least one tag having tag circuitry and a reader for transmitting a command signal to the at least one tag, comprising:
- an energizer node for transmitting an energy signal to the at least one tag to energize the at least one tag and provide energy for operating the tag circuitry and for emitting a backscatter signal by the at least one tag;
the energizer node comprising;
an energizer receiver for receiving the command signal from the reader in order to provide a received command signal;
an energizer transmitter in order to transmit the received command signal from the reader to the at least one tag; and
whereby the energizer node transmits both the energy signal and the received command signal to the at least one tag.
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Accused Products
Abstract
A backscatter tag system including a tag having tag circuitry and a reader for transmitting a command signal to the tag includes an energizer node for transmitting an energy signal to the tag to energize the tag and provide energy for operating the tag circuitry and for emitting a backscatter signal by the tag. The energizer node includes an energizer receiver for receiving the command signal from the reader to provide a received command signal and an energizer transmitter for transmitting the received command signal from the reader to the tag. The energizer node transmits both the energy signal and the received command signal to the tag. The energizer transmitter can transmit a sinusoidal signal, a frequency hopping signal, a spread spectrum signal, or a frequency shifted signal to the tag. The backscatter tag circuitry can include a processor.
61 Citations
19 Claims
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1. A backscatter tag system including at least one tag having tag circuitry and a reader for transmitting a command signal to the at least one tag, comprising:
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an energizer node for transmitting an energy signal to the at least one tag to energize the at least one tag and provide energy for operating the tag circuitry and for emitting a backscatter signal by the at least one tag; the energizer node comprising; an energizer receiver for receiving the command signal from the reader in order to provide a received command signal; an energizer transmitter in order to transmit the received command signal from the reader to the at least one tag; and whereby the energizer node transmits both the energy signal and the received command signal to the at least one tag. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification