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Electronic tag

A technology of tags and RFID tags, applied in the field of electronic tags, can solve problems such as difficulties

Pending Publication Date: 2021-08-24
FRISENSE LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This can be especially difficult with very small RFID tags that can be embedded in many individual items that are stacked or placed close together

Method used

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Embodiment approach

[0074] According to an example embodiment, a capacitively coupled tag (CC-tag) is a radio frequency identification system (RFID) based on a single integrated circuit (IC). In common application, an integrated circuit is a single piece of silicon, one side of which is functionalized through different steps to integrate electronic components such as but not limited to resistors, capacitors, diodes, transistors, etc. connected through metal layers.

[0075] Due to the small size of these components, electrical connections to the integrated circuits are provided using "pads" or metal layers that are large enough to connect to smaller wires or probes. These "pads" are usually placed on the functional side of the integrated circuit.

[0076] The backside of an integrated IC is usually tied to a ground reference, which has no particular significance on an electronic level. In the CC-tag of the present invention, one large metal pad is placed on the functional side of the integrated ...

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Abstract

A capacitive coupled radio frequency identification, RFID, tag and method for reading the tag, the tag comprising a semiconductor substrate having a first planar surface and a second planar surface distal from the first planar surface. A metallic pad is formed on the first planar surface of the semiconductor substrate. A circuit formed on the semiconductor substrate and electrically connected to the metallic pad and the second planar surface of the semiconductor substrate, the circuit configured to respond to a radio frequency, RF, input signal by providing a data signal encoded by varying an impedance between the metallic pad and the second planar surface of the semiconductor substrate.

Description

technical field [0001] The invention relates to a capacitively coupled RFID (radio frequency identification) tag and an operating method thereof. Background technique [0002] Capacitively coupled tags (CC-tags or CCTs) offer increased security while providing authenticity and traceability. The technology is widely used to track artifacts in situations where security and authenticity are paramount. However, when the size of CC-tags can be reduced and their efficiency can be increased, the number of potential applications increases. [0003] There are other types of RFID tags that may include an antenna to receive an RF (radio frequency) signal from a reader to power the device, and respond with a signal using the same antenna. However, using such an antenna increases the size of the device and increases the complexity of fabrication, thus limiting the applications of the device. Furthermore, such antennas may introduce points of failure that make the device less robust. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/08G06K19/077
CPCG06K7/081G06K19/07788G06K19/07796G06K19/0723G06K19/07722G06K7/10366
Inventor M·马扎
Owner FRISENSE LIMITED
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