Systems and methods for a RFID enabled metal license plate
First Claim
1. A RFID enabled license plate, comprising:
- a metal license plate;
a slot formed in the metal license plate such that the metal license plate functions as a slot antenna;
a RFID tag module positioned in the slot, the RFID tag modulecomprising a chip and an antenna loop, the antenna loop operatively coupled with the metal license plate such that the antenna loop and the metal license plate in combination act as a receiving unit with the chip;
a retro-reflective layer over the metal license plate, wherein the retro-reflective layer comprises metal material, and wherein a portion of the retro-reflective layer is selectively removed so as not to interfere with the operation of the RFID tag module; and
posts configured to connect the license plate to a vehicle, wherein the posts short the metal license plate to the vehicle such that the vehicle acts as a ground plane.
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Accused Products
Abstract
In the embodiments described herein, a RFID enabled license plate is constructed by using the license plate, or a retro-reflective layer formed thereon as part of the resonator configured to transmit signals generated by and RFID chip integrated with the license plate. Such an RFID enabled license plate can include a metal license plate with a slot formed in the metal license plate, and a RFID tag module positioned in the slot. The RFID tag module can include a chip and a loop, and the loop can be coupled with the metal license plate, e.g., via inductive or conductive coupling. In this manner, the metal license plate can be configured to act as a resonator providing increased performance.
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Citations
19 Claims
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1. A RFID enabled license plate, comprising:
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a metal license plate; a slot formed in the metal license plate such that the metal license plate functions as a slot antenna; a RFID tag module positioned in the slot, the RFID tag module comprising a chip and an antenna loop, the antenna loop operatively coupled with the metal license plate such that the antenna loop and the metal license plate in combination act as a receiving unit with the chip; a retro-reflective layer over the metal license plate, wherein the retro-reflective layer comprises metal material, and wherein a portion of the retro-reflective layer is selectively removed so as not to interfere with the operation of the RFID tag module; and posts configured to connect the license plate to a vehicle, wherein the posts short the metal license plate to the vehicle such that the vehicle acts as a ground plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A RFID enabled license plate, comprising:
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a license plate; a retro-reflective layer formed over the license plate; a slot formed in the retro-reflective layer plate such that the retro-reflective layer functions as a slot antenna; and a RFID tag module positioned in the slot, the RFID tag module comprising a chip and an antenna loop, the antenna loop coupled with the retro-reflective layer such that the antenna loop and the retro-reflective layer act in combination as a receiving unit with the chip. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification