Locatable and Autonomously Powered Backscatter Transponder for Registering Measured Variables
2 Assignments
0 Petitions
Accused Products
Abstract
There is described a backscatter system comprised of a base station and of a completely passive transponder. The transponder is capable of reading out quantities from sensors and an energy stand-alone manner, of transmitting the readout quantities to the base station, and to carry out a runtime-based and thus highly precise distance measurement between a completely passive tag and base station. The power supply of the transponder ensues from the radio field emitted by the base station.
33 Citations
34 Claims
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1-15. -15. (canceled)
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16. A backscatter transponder, comprising:
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an energy supply to feed the backscatter transponder with energy based upon a HF field of a base station; a control device to transmit energy from the energy supply to a sensor to read out measured values of the sensor; and a distance measuring device to measure contactless a distance between the base station and the backscatter transponder. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A base station for producing and registering radio signals in communication with a backscatter transponder, comprising:
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a receiver to receive a radio signal emitted by a backscatter transponder; a transmitter to radiate first radio signals in a first frequency band for supplying the backscatter transponder with energy and to radiate second radio signals in a second frequency band for locating the backscatter transponder; and a signal processing and driving component. - View Dependent Claims (30, 31, 32, 33, 34)
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Specification