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RFID TAG WITH A SEMI-ENCLOSED COUPLER

  • US 20100060421A1
  • Filed: 09/08/2008
  • Published: 03/11/2010
  • Est. Priority Date: 09/08/2008
  • Status: Abandoned Application
First Claim
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1. A RFID tag with a semi-enclosed coupler, comprising:

  • a dielectric layer, an antenna layer laminated on a top surface of the dielectric layer, and a ground plane laminated on a bottom surface of the dielectric layer;

    wherein the antenna layer includes an antenna portion and a semi-enclosed coupler, one end of the coupler encloses one end of the antenna portion in such a manner that the one end of the coupler is located a certain distance from the one end of the antenna portion, and the other end of the coupler is an open end, a RFID chip is provided on the coupler, the one end of the antenna portion is located within an area enclosed by the coupler, and the other end of the antenna is connected to the open end of the coupler, so that the antenna layer is variable in length.

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