Detection or identification antenna insensitive to the environment thereof
AssigneePygmalyon
InventorJean-Marc Martin
Life of this patent
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Abstract
A resonant detection or identification antenna having at least one turn the antenna includes at least one electrically conducting wire and is connected to an electronic transponder chip, the operating frequency of the antenna being greater than or equal to 10 MHz and the area defined by the at least one turn being substantially less than or equal to 0.30 m2. The total capacitance of the antenna is substantially greater than or equal to 140 pF and the Q-factor of the at least one turn is substantially greater than or equal to 30.
Claims10
Resonant detection or identification antenna of the type comprising at least one turn which comprises at least one electrically conducting wire and is connected to a transponder electronic chip, the operating frequency of said antenna being greater than or equal to 10 MHz, an area defined by said at least one turn being substantially less than or equal to 0.30 m2, wherein a total capacitance of the antenna is substantially greater than or equal to 140 pF and a Q-factor of said at least one turn is substantially greater than or equal to 30, wherein the transponder chip has a first capacitor of predetermined value and wherein a second capacitor is placed in parallel with the electronic chip in such a way that the overall capacitance of the antenna is greater than or equal to 140 pF.
Dependencies are inferred from the claim text.