RFID TAGS WITH ORTHOGONAL COMMUNICATION CAPABILITIES, AND ASSOCIATED SYSTEMS
First Claim
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1. A radio frequency identification (RFID) tag, comprising:
- a tag substrate;
at least one antenna formed on the substrate;
a memory, received by the substrate, for storing RFID data;
processing and modulation circuitry received by the substrate and coupled among the antenna and the memory, wherein the processing and modulation circuitry is configured to;
receive at least some of the stored RFID data, andencode the received data using orthogonal frequency division multiplexing (OFDM) to modulate the received data onto two or more orthogonal subcarriers; and
wherein the at least one antenna transmits the OFDM encoded signal.
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Abstract
An apparatus for use in an RFID data collection system includes an antenna portion for wirelessly exchanging signals and a memory portion for storing RFID data. A signal processing portion is coupled among the antenna portion and the memory portion. The signal processing portion is configured to receive RFID data and to at least encode or decode the received RFID data via at least two orthogonal modulation signals. Other configurations are also disclosed.
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Citations
24 Claims
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1. A radio frequency identification (RFID) tag, comprising:
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a tag substrate; at least one antenna formed on the substrate; a memory, received by the substrate, for storing RFID data; processing and modulation circuitry received by the substrate and coupled among the antenna and the memory, wherein the processing and modulation circuitry is configured to; receive at least some of the stored RFID data, and encode the received data using orthogonal frequency division multiplexing (OFDM) to modulate the received data onto two or more orthogonal subcarriers; and wherein the at least one antenna transmits the OFDM encoded signal. - View Dependent Claims (2, 3, 4)
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5. A radio frequency identification (RFID) reader, comprising:
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antenna means for wirelessly exchanging signals; a memory means for storing data; and processing and circuitry means, coupled among the antenna means and the memory means, for receiving RFID data stored in RFID tags, wherein the received RFID tag data is encoded using orthogonal modulation signals, and wherein the processing and circuitry means further comprises means for decoding the received RFID tag data encoded using the orthogonal modulation signals. - View Dependent Claims (6, 7)
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8. A semiconductor device for use in a radio frequency identification (RFID) tag, the device comprising:
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encoder circuitry that receives incoming data stored by the RFID tag and converts the stored RFID data into at least one transmitting signal that employs two or more orthogonal modulation signals; and
,an output portion for outputting the RFID tag data, as the least one transmitting signal that employs the two or more orthogonal modulation signals, to be transmitted by the RFID tag. - View Dependent Claims (9, 10, 11, 12, 13)
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14. An apparatus for use in a radio frequency identification (RFID) data collection system, the apparatus comprising:
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an antenna portion for wirelessly exchanging signals; a memory portion for storing RFID data; and a signal processing portion coupled among the antenna portion and the memory portion, wherein the signal processing portion is configured to receive RFID data and to at least encode or decode the received RFID data via at least two orthogonal modulation signals that are mutually orthogonal to each other with respect to the RFID data collection system. - View Dependent Claims (15, 16)
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17. A computer-readable medium whose contents cause at least one device to perform a method for decoding data received from a radio frequency identification (RFID) tag, the method comprising:
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receiving RFID data from the RFID tag, wherein the received RFID tag data is encoded using mutually orthogonal signal encoding; decoding the mutually orthogonal encoded RFID tag data; and
,outputting the decoded mutually orthogonal encoded RFID tag data for data storage or automated data processing. - View Dependent Claims (18)
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19. A wireless data collection system comprising:
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a radio frequency identification (RFID) tag having at least one antenna; an RFID reader module having at least one antenna and configured to exchange wireless signals with the RFID tag; and
,wherein at least the RFID tag or the RFID reader is configured to transmit the RFID data over a range of frequencies, and wherein the RFID data is spread over the range of frequencies via at least two orthogonal modulation signals. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification