Method for locating a backscatter-based transponder
First Claim
Patent Images
1. A method for locating a transponder, the method comprising the steps of:
- transmitting a carrier signal by a base station;
transmitting, by the transponder, a locating signal that is generated through phase modulation and backscattering of the carrier signal sent by the base station when the transponder is within a transmission range of the base station; and
locating the transponder on the basis of the locating signal.
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Accused Products
Abstract
A method and apparatus for locating a transponder is provided. A carrier signal is transmitted by a base station and a transponder transmits a locating signal that is generated through phase modulation and backscattering of the carrier signal sent by the base station when the transponder is within a transmission range of the base station, whereby the transponder is located on the basis of the locating signal.
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Citations
20 Claims
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1. A method for locating a transponder, the method comprising the steps of:
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transmitting a carrier signal by a base station;
transmitting, by the transponder, a locating signal that is generated through phase modulation and backscattering of the carrier signal sent by the base station when the transponder is within a transmission range of the base station; and
locating the transponder on the basis of the locating signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 19)
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14. A method for locating a backscatter-based transponder, the method comprising the steps of:
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transmitting a locating command via a base station to the transponder;
receiving the locating command by the transponder;
transmitting, by the transponder, a locating signal that is generated by phase modulation and backscattering of a carrier signal transmitted from the base station; and
locating the transponder on the basis of the locating signal. - View Dependent Claims (15, 16, 17, 18)
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20. An object location system comprising:
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a base station for transmitting a carrier signal; and
a transponder being attached or integrated into the object, the transponder identifying the object, the transponder transmitting a locating signal that is generated through phase modulation and backscattering of the carrier signal transmitted by the base station when the transponder is within a transmission range of the base station, the object being located on the basis of the locating signal.
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Specification