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US 2015/0311578 A1Published application
Antenna construction, for example for an RFID transponder system
AssigneeTeknologian tutkimuskeskus VTT Oy
InventorKaarle Jaakkola
Life of this patent
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Abstract
The invention relates to an antenna construction for an RFID chip for long ranges, which comprises a substrate, an antenna of conducting material supported by the substrate, and coupling means for coupling the antenna to a circuit. In accordance with the invention the antenna is a magnetic dipole, and the coupling means are formed by extensions of the antenna conductor.
Claims12
An antenna assembly comprising:
- a microchip
- a first antenna of conducting material, supported by a substrate, connected to the microchip,
- a second antenna of the conducting material, connected to the microchip and wrapping around the substrate, the first antenna portion, the microchip and at least a portion of itself,
- wherein the overlapped portion of the second antenna and the first antenna form a first capacitor in series with the microchip and,
- wherein the portion of the second antenna which overlaps itself forms a second capacitor which is in parallel with the microchip and first capacitor.
2 more elements
Dependencies are inferred from the claim text.