SYSTEMS AND METHODS FOR BACKSCATTER COMMUNICATION
First Claim
1. A method for transmitting data, comprising:
- receiving a carrier signal, the carrier signal being transmitted in a first frequency band;
shifting a frequency band in which the carrier signal is transmitted to a second frequency band; and
transmitting the carrier signal in the second frequency band,wherein the second frequency band is substantially free of signal interference.
2 Assignments
0 Petitions
Accused Products
Abstract
Systems and methods for wireless communication are provided. The systems and methods employ a backscatter tag that is configured to shift an incident carrier signal received by the tag to a different frequency band and then transmitting the frequency-shifted carrier signal to a receiver. The frequency band to which the carrier signal is shifted is a band in which interference is minimal or non-existent. Further, the backscatter tag is able to operate in an ultra-low power manner, thereby allowing the tag to be incorporated into components like on-body sensors so that the tag can embed additional information into the carrier signal for transmission and processing by the receiver. Exemplary electronic circuits and systems that utilize a frequency-shifted Backscatter, as well as methods for implementing a frequency-shifted Backscatter, are also provided.
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Citations
24 Claims
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1. A method for transmitting data, comprising:
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receiving a carrier signal, the carrier signal being transmitted in a first frequency band; shifting a frequency band in which the carrier signal is transmitted to a second frequency band; and transmitting the carrier signal in the second frequency band, wherein the second frequency band is substantially free of signal interference. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A backscatter tag, comprising:
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a radio frequency transistor; transmission logic configured to receive data to be transmitted and to toggle the radio frequency transistor based on the data to be transmitted; and a clock generator operatively connected to the transmission logic and configured to shift frequency of an incident carrier from a first frequency band to a second frequency band, the second frequency band being substantially free of signal interference. - View Dependent Claims (19, 20, 21, 22, 23)
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24-32. -32. (canceled)
Specification