RF devices
First Claim
Patent Images
1. RFID tag comprising:
- a) a substrate,b) an antenna formed on the substrate, the antenna comprising an antenna capacitor plate deposited on the substrate,c) an RF IC chip, the RF IC chip comprising at least one coupling capacitor plate deposited on a surface of the RF IC chip, the said surface of the RF IC chip bonded to the substrate and to the antenna so that the coupling capacitor overlies the antenna capacitor plate so as to electrically couple RF signals between the RF IC chip and the antenna,the RFID tag further including at least one supplemental capacitor plate between the RF IC chip and the coupling capacitor plate.
2 Assignments
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Accused Products
Abstract
A low cost passive RFID tag uses capacitive or inductive coupling between the RF IC chip and the antenna. Coupling elements are formed directly on the surface of the RF IC chip.
190 Citations
8 Claims
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1. RFID tag comprising:
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a) a substrate, b) an antenna formed on the substrate, the antenna comprising an antenna capacitor plate deposited on the substrate, c) an RF IC chip, the RF IC chip comprising at least one coupling capacitor plate deposited on a surface of the RF IC chip, the said surface of the RF IC chip bonded to the substrate and to the antenna so that the coupling capacitor overlies the antenna capacitor plate so as to electrically couple RF signals between the RF IC chip and the antenna, the RFID tag further including at least one supplemental capacitor plate between the RF IC chip and the coupling capacitor plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification