Antenna Structure of a Radio Frequency Identification System Transponder
First Claim
1. An antenna structure of a radio frequency identification system transponder, comprising an antenna body which is provided with a coupling part, an insulation layer and a foldback circuit, wherein a gap of the foldback circuit, corresponding to the coupling part, faces toward a gap of the coupling part, with the opening being provided with an RFIC (Radio Frequency Interface Chip) that electrically connects the foldback circuit to form a loop circuit;
- the insulation layer being provided between the coupling part of the antenna body and the foldback circuit.
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Abstract
The present invention is an antenna structure of a radio frequency identification system transponder, especially an antenna structure wherein an insulation layer and a foldback circuit, an opening of which faces toward a coupling part, are provided at corresponding positions of an antenna body which is provided with the coupling part. The foldback circuit is provided with a radio frequency integrated circuit, such that radio signals can be transmitted by induction by the foldback circuit and the coupling part. By this foldback circuit, an issue of directivity of the radio signals can be reduced, an effective read range of the radio signals can be increased, as well as a near field induction function and a far field induction function can be provided at a same time. Therefore, when manufacturing an RFID transponder, a production speed can be increased and production cost can be reduced.
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Citations
24 Claims
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1. An antenna structure of a radio frequency identification system transponder, comprising an antenna body which is provided with a coupling part, an insulation layer and a foldback circuit, wherein a gap of the foldback circuit, corresponding to the coupling part, faces toward a gap of the coupling part, with the opening being provided with an RFIC (Radio Frequency Interface Chip) that electrically connects the foldback circuit to form a loop circuit;
- the insulation layer being provided between the coupling part of the antenna body and the foldback circuit.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An antenna structure of a radio frequency identification system transponder, comprising an antenna body which is provided with a coupling part, an antenna substrate and a foldback circuit, wherein the antenna body is provided on the non-conductive antenna substrate, and the foldback circuit is provided on a rear side of the antenna substrate and corresponds to the antenna body;
- a gap of the foldback circuit that corresponds to the coupling part, faces toward a gap of the coupling part;
the opening being provided with an RFIC that electrically connects the foldback circuit to form a loop circuit. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
- a gap of the foldback circuit that corresponds to the coupling part, faces toward a gap of the coupling part;
Specification