BACKSCATTER RFID SENSOR WITH A BEND TRANSDUCER

Jasmin Grosinger (Inventor), D Griffin Joshua (Inventor)

Research output: PatentResearch

Abstract

A bend sensor for use in wirelessly sensing an amount of bend of a joint or other monitored object. The sensor includes a radio frequency (RF) antenna and an integrated circuit linked to the antenna. The integrated circuit or chip is passive and responds to, or is powered by, a read signal received by the antenna to transmit a reflected signal via the antenna such as to an RFID reader. The sensor also includes a transducer linked to the integrated circuit. The transducer defines reflecting impedance, which modulates amplitude and phase of the reflected signal. The transducer has impedance varying with deformation or bend. In one example, the transducer includes an upper conductor, and the amount of the deformation is defined by a bend radius of the upper conductor. The read signal may be at 5 GHz or higher such with the antenna and the transducer being microwave structures.

Original languageEnglish
Patent numberUS2014049421
IPCG01S 13/ 42 A I
Priority date15/08/12
Publication statusPublished - 20 Feb 2014

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Radio frequency identification (RFID)
Transducers
Antennas
Sensors
Integrated circuits
Microwaves

Fields of Expertise

  • Information, Communication & Computing

Cite this

Grosinger, J., & Griffin Joshua, D. (2014). IPC No. G01S 13/ 42 A I. BACKSCATTER RFID SENSOR WITH A BEND TRANSDUCER. (Patent No. US2014049421).

BACKSCATTER RFID SENSOR WITH A BEND TRANSDUCER. / Grosinger, Jasmin (Inventor); Griffin Joshua, D (Inventor).

IPC No.: G01S 13/ 42 A I. Patent No.: US2014049421.

Research output: PatentResearch

Grosinger, J & Griffin Joshua, D 2014, BACKSCATTER RFID SENSOR WITH A BEND TRANSDUCER, Patent No. US2014049421, IPC No. G01S 13/ 42 A I.
Grosinger J, Griffin Joshua D, inventors. BACKSCATTER RFID SENSOR WITH A BEND TRANSDUCER. G01S 13/ 42 A I. 2014 Feb 20.
Grosinger, Jasmin (Inventor) ; Griffin Joshua, D (Inventor). / BACKSCATTER RFID SENSOR WITH A BEND TRANSDUCER. IPC No.: G01S 13/ 42 A I. Patent No.: US2014049421.
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