Digital RF tag
First Claim
1. An RF tag comprising a programmable miniature transceiver, said transceiver including a digital signal processing convolver for convolving a digital representation of the waveform transmitted to said tag with information to be embedded in the signal returned by said transceiver to the platform with which said transceiver is communicating, said transceiver capable of communicating with a plurality of different platforms which operates by interrogating said tag with a predetermined waveform and receiving a waveform transmitted by said tag to said platform with tag generated information embedded therein.
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Accused Products
Abstract
An RF tag is provided to communicate with an interrogating source in which the tag has programmability and flexibility to uplink data to multiple platforms. As such the RF tag functions as a miniature programmable transceiver capable of communicating with a plurality of different platforms each having different waveform characteristics. With well-controlled spectral characteristics due to stored waveforms and the use of specialized direct digital up and down conversion techniques, data rates up to 256 kbps are achievable. The tag is thus capable of converting microwave signals directly to digital inputs, and the transmitter generates microwave signals directly from digital outputs. Flexible digital processing also allows a throughput of 900 BOPS when using field programmable gate arrays.
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Citations
18 Claims
- 1. An RF tag comprising a programmable miniature transceiver, said transceiver including a digital signal processing convolver for convolving a digital representation of the waveform transmitted to said tag with information to be embedded in the signal returned by said transceiver to the platform with which said transceiver is communicating, said transceiver capable of communicating with a plurality of different platforms which operates by interrogating said tag with a predetermined waveform and receiving a waveform transmitted by said tag to said platform with tag generated information embedded therein.
Specification