Tags, wireless communication systems, tag communication methods, and wireless communications methods
First Claim
1. A tag comprising:
- a plurality of antennas configured to receive a plurality of first wireless communication signals comprising data from a reader;
a plurality of rectifying circuits coupled with respective individual ones of the antennas and configured to provide rectified signals corresponding to the first wireless communication signals, wherein the rectified signals are combined to produce a composite signal;
an adaptive reference circuit configured to vary a reference signal responsive to the composite signal;
a comparator coupled with the adaptive reference circuit and the rectifying circuits and configured to compare the composite signal with respect to the reference signal and to output the data responsive to the comparison; and
processing circuitry configured to receive the data from the comparator and to process the data.
1 Assignment
0 Petitions
Accused Products
Abstract
Tags, wireless communication systems, tag communication methods, and wireless communications methods are described. In one aspect, a tag includes a plurality of antennas configured to receive a plurality of first wireless communication signals comprising data from a reader, a plurality of rectifying circuits coupled with. respective individual ones of the antennas and configured to provide rectified signals corresponding to the first wireless communication signals, wherein the rectified signals are combined to produce a composite signal, an adaptive reference circuit configured to vary a reference signal responsive to the composite signal, a comparator coupled with the adaptive reference circuit and the rectifying circuits and configured to compare the composite signal with respect to the reference signal and to output the data responsive to the comparison, and processing circuitry configured to receive the data from the comparator and to process the data.
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Citations
49 Claims
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1. A tag comprising:
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a plurality of antennas configured to receive a plurality of first wireless communication signals comprising data from a reader; a plurality of rectifying circuits coupled with respective individual ones of the antennas and configured to provide rectified signals corresponding to the first wireless communication signals, wherein the rectified signals are combined to produce a composite signal; an adaptive reference circuit configured to vary a reference signal responsive to the composite signal; a comparator coupled with the adaptive reference circuit and the rectifying circuits and configured to compare the composite signal with respect to the reference signal and to output the data responsive to the comparison; and processing circuitry configured to receive the data from the comparator and to process the data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A wireless communication system comprising:
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a reader configured to output a plurality of first wireless communication signals comprising data; a tag comprising a plurality of antennas configured to receive the first wireless communication signals from the reader, processing circuitry configured to receive the data of the first wireless communication signals and to control backscatter modulation of radio frequency energy to communicate a plurality of second wireless communication signals to the reader, and a battery configured to provide operational electrical energy to the processing; and wherein one of the antennas is substantially tuned to a first frequency band and another of the antennas is substantially tuned to a second frequency band different than the first frequency band. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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26. A tag communication method comprising:
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receiving a plurality of first wireless communication signals from a reader using a plurality of antennas of a tag; providing a plurality of electrical signals within the tag and corresponding to the first wireless communication signals received using respective ones of the antennas; combining the electrical signals using the tag; comparing the combined electrical signals to a reference signal, the comparing generating a data signal comprising data of the first wireless communication signals; processing the data signal using the tag; and backscatter modulating radio frequency energy using the tag to output a plurality of second wireless communication signals for communication to the reader. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34)
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35. A wireless communication method comprising:
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providing a reader; providing a tag comprising a plurality of antennas; outputting a plurality of first wireless communication signals comprising data using the reader; receiving the first wireless communication signals using the antennas of the tag; combining electrical signals corresponding to respective ones of the first wireless communication signals within the tag; providing data comprising comparing the combined electrical signals to a reference signal using the tag; and processing the data using processing circuitry of the tag after the comparing. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. A wireless communication system comprising:
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a reader configured to output a plurality of first wireless communication signals comprising data; a tag comprising a plurality of antennas configured to receive the first wireless communication signals from the reader, processing circuitry configured to receive the data of the first wireless communication signals and to control backscatter modulation of radio frequency energy to communicate a plurality of second wireless communication signals to the reader, and a battery configured to provide operational electrical energy to the processing circuitry; and wherein the tag comprises an adaptive reference circuit configured to provide a reference signal responsive to the combined electrical signals, and a comparator configured to compare the combined electrical signals with the reference signal.
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48. A tag communication method comprising:
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receiving a plurality of first wireless communication signals from a reader using a plurality of antennas of a tag; providing a plurality of electrical signals within the tag and corresponding to the first wireless communication signals received using respective ones of the antennas; combining the electrical signals using the tag; processing the combined electrical signals using the tag; backscatter modulating radio frequency energy using the tag to output a plurality of second wireless communication signals for communication to the reader; adjusting a reference signal responsive to the electrical signals using the tag; comparing the combined electrical signals to the reference signal using the tag; and providing data responsive to the comparing using the tag, and the processing comprises processing the data using processing circuitry.
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49. A wireless communication method comprising:
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providing a reader; providing a tag comprising a plurality of antennas; outputting a plurality of first wireless communication signals comprising data using the reader; receiving the first wireless communication signals using the antennas of the tag; combining electrical signals corresponding to respective ones of the first wireless communication signals within the tag; processing data of the combined electrical signals using processing circuitry of the tag after the combining; and providing the data comprising comparing the combined electrical signals to an adaptive reference signal using the tag and prior to the processing.
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Specification