Radio-frequency identification (rfid) capacitance liquid measurement tag system
US-2024311609-A1 · Sep 19, 2024 · US
US9639724B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9639724-B2 |
| Application number | US-201514882517-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 14, 2015 |
| Priority date | Dec 27, 2011 |
| Publication date | May 2, 2017 |
| Grant date | May 2, 2017 |
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An article having a conductive body, a magnetic diverter, and a communication device is described. The magnetic diverter is positioned on an outer surface of the conductive body. The magnetic diverter covers a substantial portion of the outer surface of the conductive body. A communication device is positioned on the outer surface of the diverter or may be recessed therein. The communication device is capable of signal coupling with a reader.
Opening claim text (preview).
What is claimed is: 1. An article comprising: a conductive body; a magnetic diverter positioned on an outer surface of the conductive body, the magnetic diverter covering a substantial portion of the outer surface of the conductive body; and a communication device; wherein the communication device comprises at least one of (i) an RFID tag, (ii) a resonant RF circuit, and (iii) a smart sensor; wherein the communication device comprises a first antenna and a second antenna, the second antenna being in electrical communication with a phase shifting circuit, wherein the phase shifting circuit shifts the voltage of the second antenna by about 90 degrees, wherein the first antenna has a first portion and a second portion, and wherein the first portion is positioned on an outer surface of the diverter and encloses the article in a sweep of about 180 degrees and wherein the second portion is longitudinally offset from the first portion and encloses the article in a sweep of about 180 degrees which is opposite the sweep of the first portion. 2. The article of claim 1 , wherein the magnetic diverter comprises a recess, and wherein the communication device is disposed within the recess. 3. A system comprising the article of claim 1 and a reader capable of signal coupling with the communication device, the system further comprising a passive repeater. 4. The system of claim 3 , wherein the passive repeater is positioned between the article and the reader. 5. The system of claim 3 , wherein the article comprises the passive repeater. 6. The system of claim 3 , wherein the reader comprises the passive repeater. 7. The article of claim 1 , wherein the second antenna has a first portion and a second portion, wherein the first portion is positioned on an outer surface of the diverter and encloses the article in a sweep of about 180 degrees and wherein the second portion is longitudinally offset from the first portion and encloses the article in a sweep of about 180 degrees which is opposite the sweep of the first portion. 8. The article of claim 1 , wherein the first antenna has a first portion enclosing the article in a sweep of about 180 degrees and a second portion longitudinally offset from the first portion and enclosing the article in a sweep of about 180 degrees which is opposite the sweep of the first portion, and wherein the second antenna has a first portion enclosing the article in a sweep of about 180 degrees and a second portion longitudinally offset from the first portion and enclosing the article in a sweep of about 180 degrees which is opposite the sweep of the first portion. 9. The article of claim 8 , wherein the first antenna first portion and the second antenna first portion are offset from one another by about 90 degrees. 10. The article of claim 8 , wherein the first antenna second portion and the second antenna second portion are offset from one another by about 90 degrees.
at least one of the integrated circuit chips comprising a sensor or an interface to a sensor · CPC title
including auxiliary means for focusing, repeating or boosting the electromagnetic interrogation field (comparable booster antennas integrated on the record carrier itself G06K19/07794) · CPC title
Antenna details (antennas for wireless devices, e.g. RFID tags, in general H01Q1/22) · CPC title
Tags attached to, or associated with, an object, in order to enable detection of the object (record carriers for use with machines having a detectable tag or marker G06K19/00) · CPC title
Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop · CPC title
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