11-01-2018 дата публикации
Номер: US20180012046A1
Принадлежит:
The present invention relates to radio-frequency identification (RFID) tags that produce a unique radar signature by passive reflection of an electromagnetic signal. In particular, provided herein are frequency-, phase-, and/or amplitude-shift encoded RFID tags, and methods of use and manufacture thereof. 131.-. (canceled)32. A radio-frequency identification (RFID) tag comprising a conductive patch having one or more resonators , wherein the RFID tag is chipless , wherein the conductive patch is upon a deformable dielectric substrate , wherein the RFID tag emits a response signal having an electromagnetic signature (EMS) upon interrogation by an interrogator electromagnetic signal , and wherein the EMS of the response signal is altered by the degree and/or type of deformation of the dielectric substrate.33. The RFID tag of claim 32 , wherein the type of deformation is selected from elongating claim 32 , stretching claim 32 , folding claim 32 , twisting claim 32 , bending claim 32 , stretching claim 32 , and contracting.34. The RFID tag of claim 32 , wherein the degree of alteration of the EMS corresponds to the degree of deformation of the dielectric substrate.36. The method of claim 35 , wherein the RFID tag is interrogated and the response signal is detected as a function of time.37. The method of claim 36 , wherein the EMS is measured at distinct time-points or in real time.38. The method of claim 35 , wherein the target is a human claim 35 , the RFID tag is placed on a body part claim 35 , and alteration of the EMS indicates movement claim 35 , angle claim 35 , and/or displacement of the body part.39. The method of claim 38 , wherein the body part is selected from the group consisting of an ankle claim 38 , knee claim 38 , elbow claim 38 , shoulder claim 38 , and wrist.40. The RFID tag of claim 38 , wherein the degree of alteration of the EMS corresponds to the degree of movement claim 38 , angle claim 38 , and/or displacement of the body part.41. The method of ...
Подробнее