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uhf‑rfid antennas for point of sale terminal applications

An antenna and straight line technology, applied to antennas, loop antennas, antenna parts, etc., to achieve the effect of reducing false alarm readings and suppressing false alarm readings

Active Publication Date: 2018-03-27
NXP BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, products 315 from different customers may be read at the same time on the POS 300

Method used

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  • uhf‑rfid antennas for point of sale terminal applications
  • uhf‑rfid antennas for point of sale terminal applications
  • uhf‑rfid antennas for point of sale terminal applications

Examples

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Embodiment Construction

[0029] Figure 4a Shown is an RFID antenna 400 in accordance with one embodiment of the invention. Segmented ring 410 is surrounded by passive dipole structures 420 a and 420 b , which confine the RF field emitted by segmented ring 410 . Loop segmentation allows a more powerful antenna to operate like a less powerful antenna. Each section of the segment provides very little phase delay between adjacent sections, the current along segment 515 (see Figure 5 ) remains constant in magnitude, which results in a strong and uniform magnetic field. Choosing the length of the segments to be on the order of 1 / 8 wavelength achieves a compromise between structural complexity and current uniformity in the loop segments.

[0030] RFID antenna 400 can be fabricated in accordance with the present invention by placing conductive material 430 (e.g., copper) on dielectric substrate 440, as Figure 4b shown. The thickness of conductive material 430 generally needs to be selected to suit the...

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PUM

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Abstract

The present invention relates to RFID reader antennas and methods of manufacturing RFID reader antennas. The RFID reader antenna includes: a loop including a plurality of segments disposed on a dielectric substrate; and a plurality of passive dipole segments disposed on the dielectric substrate, the plurality of passive dipoles Segments are arranged around the ring such that the plurality of passive dipole segments resonate with the ring and act as radio frequency reflectors and energy absorbers. This UHF‑RFID antenna provides electric and magnetic field shaping to reduce the amount of false positives from UHF‑RFID readers at the point of sale.

Description

technical field [0001] The present invention relates to RFID reader antennas and methods of manufacturing RFID reader antennas. Background technique [0002] Current RFID (Radio Frequency Identification) systems are capable of replacing barcode systems in many applications. Interest in RFID tags for clothes and other items such as groceries is now seen to increase across the respective industries. The RFID tag of the goods can make the goods be tracked throughout the supply chain. At the end of the supply chain are point-of-sale (POS) applications. Barcode-based product scanners are often used at POS to identify the products being sold. Based on information from the POS terminal, all data along the entire supply chain is updated (such as inventory), and upon receipt of payment from the customer, the customer's bill is generated and any security systems are deactivated. [0003] Barcode POS systems typically have a very low detection range, which means that barcode labels...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K7/00H01Q19/02H01Q19/18H01Q17/00
CPCH01Q1/2216Y10T29/49016H01Q1/243H01Q19/32H01Q19/26H01Q7/00H01Q19/18
Inventor 斯特凡·梅尔本农·弗莱克达留什·马斯泰拉杰拉尔德·维德涅格
Owner NXP BV