RFID antenna gain and range enhancement
First Claim
1. A system of using femtosecond laser ablation of the metal base material which comprises the elements of a radio frequency identification antenna;
- a system of using a generic laser pulse device to treat commercially produced bulk sheets of the metal base material with a pulse of sharply focused laser energy;
a system of using the bulk commercially produced sheets of base metal material so that they are manufactured into radio frequency identification antennas after the femtosecond laser ablation technique has been applied;
all for the purpose of creating three dimensional nano structures on the metal base material.
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Abstract
This is an invention which addresses the need of the RFID industry to produce antennas which do not detune due to the proximity of other antennas. This invention also addresses the problem of reading RFID transponders which are not in a perpendicular orientation to the interrogator. This invention also addresses the need of the RFID industry to increase the read range of RFID antennas. Although this invention focuses primarily on the interrogator side of antenna gain and range enhancement it is equally applicable to the antenna portion of the base metal material which comprises the antenna structure of a transponder. The useful, non-obvious and novel steps of this invention include a laser ablation process applied to the base metal material, whether copper or aluminum, for the purpose of creating three dimensional nano structures on the surface of the base metal material. Pursuant to this process the absorption rate of the base metal material is enhanced thereby increasing the gain and range of the manufactured and implanted antennas.
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Citations
10 Claims
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1. A system of using femtosecond laser ablation of the metal base material which comprises the elements of a radio frequency identification antenna;
- a system of using a generic laser pulse device to treat commercially produced bulk sheets of the metal base material with a pulse of sharply focused laser energy;
a system of using the bulk commercially produced sheets of base metal material so that they are manufactured into radio frequency identification antennas after the femtosecond laser ablation technique has been applied;
all for the purpose of creating three dimensional nano structures on the metal base material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- a system of using a generic laser pulse device to treat commercially produced bulk sheets of the metal base material with a pulse of sharply focused laser energy;
Specification