United States of America As Represented by the Administrator of Nasa

David S Hafermalz

Raymond S Wagner

Patrick W Fink

Phong H Ngo

Greg Y Lin

Lazaro D Rodriguez

A method includes acquiring one or more samples using a sensor of an RFID tag. The method also includes storing the one or more samples in a memory of the RFID tag. The method also includes determining a priority level for each of the one or more samples in the memory. Each of the one or more samples is either a high priority sample with the high priority level or a low priority sample with the low priority level. The method also includes switching the RFID tag from a range standard mode to a range extension mode in response to determining that the one or more samples stored in the memory includes the high priority sample with the high priority level. The method also includes transferring custody of the high priority sample with the high priority level to the RFID reader while the range extension mode is activated.

Range extension and priority handling for wearable, ubiquitous RFID tag

A radio-frequency identification (RFID) antenna assembly, per an implementation, includes a number of multiplexer modules coupled with one another. Radio frequency (RF) signals are received from an RFID reader. One or more of the multiplexer modules has a switch with multiple output ports. An antenna connects with one of the output ports and, per an implementation, an encoder connects with another of the output ports. The multiplexer module(s) may also have a first rectifier for rapid self-powering capabilities, and a second rectifier for more robust self-powering capabilities.

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Houston, TX, United States of America

David S Hafermalz