CN204759474U - Button type RFID label - Google Patents

Abstract

The utility model discloses a three dimensional structure RFID label. The utility model discloses a basement of button type ABS, buckle dipole antenna and coupling feed ring, the three -dimensional button type structure that the ABS basement adopted 3D to print includes circular top surface, circular bottom surface and crosses a section lateral wall, dipole antenna is straight line and fan -shaped structural grouping in the basement bottom surface, and this linear structure crosses the bottom surface centre of a circle, concatenates the fan -shaped structure of two sections central symmetry settings together, every section fan -shaped structure is kept away from sharp one end and is extended to the basement top surface through crossing a section lateral wall, and dipole antenna is at the basement top surface also for the fan -shaped structure of central symmetry setting, coupling feed ring is located basement bottom surface dipole antenna's linear structure next door, 4 RFID chips of alien higgs of loading. The utility model overcomes tradition RFID's plane dimensional limit, it is little still to have the size, and omni -direction is good, and simple structure is with low costs, and the application is convenient, advantages such as application scope guangZhou.

Description

A kind of coin shape RFID label tag

Technical field

The utility model belongs to antenna technology and wireless communication field, relates to a kind of Novel button type RFID label tag.

Background technology

Radio-frequency (RF) identification and RFID(RadioFrequencyIdentification) technology, also known as electronic tag, radio frequency identification, a kind of read and write related data by radio signals identification specific objective, and without the need to setting up the communication technology of machinery or optical contact between recognition system and specific objective.Conventional passive RFID has low frequency (125k ~ 134.2K), high frequency (13.56Mhz), ultrahigh frequency (860-960MHz).

RFID label antenna is as the important component part of rfid system, and its performance will affect the effect and quality of whole rfid system greatly.The principal element affecting RFID antenna performance comprises antenna size, working frequency range, impedance and gain etc.RFID common is at present generally planar structure, and major part adopts bending line style dipole form, is convenient to reduction antenna size and antenna processing.And the RFID label tag being used as identification or gate inhibition is generally card form, this considerably increases the card burden that people carry.

Summary of the invention

The utility model, for the deficiencies in the prior art, provides a kind of coin shape RFID label tag.

The utility model adopts one along coin shape ABS substrate along the folded dipole stretched as radiating antenna, this antenna by side's ring as couple feed structure, Fang Huan upper loading RFID chip AlienHiggs4.

The technical solution adopted in the utility model is:

The utility model comprises coin shape ABS substrate, bending dipole antenna and couple feed ring.

The three-dimensional coin shape structure that described ABS substrate adopts 3D to print, comprises circular end face, rounded bottom surface and crosses section sidewall.

Described dipole antenna is that straight line and sector structure combine in substrate bottom surface, and the center of circle, bottom surface crossed by this linear structure, the sector structure that two sections of Central Symmetries are arranged is serially connected; Every section of sector structure was passed through section sidewall away from one end of straight line and was extended to basement top, dipole antenna basement top also centered by symmetrically arranged sector structure.

Described couple feed ring is positioned at the linear structure side of substrate bottom surface dipole antenna, loads an AlienHiggs4RFID chip.

Described dipole antenna and couple feed ring adopt ink jet printing to print.

The beneficial effect that the utility model has is: the utility model has 3 D stereo cramped construction, its coin shape structure is convenient to this label for clothes, can be used as fixed labels (jacket button) or detachable label (badge/brooch etc.) use, applied widely, facilitate portable and not easily lose.And FCC frequency range (902-928MHz) can be operated in, antenna has good omni-directional on the direction perpendicular to button face simultaneously, and its reading distance can reach 2.1m.

Accompanying drawing explanation

Fig. 1 a is the one-piece construction figure of antenna.

Fig. 1 b is the vertical view of antenna.

Fig. 2 is the application scenarios schematic diagram of antenna.

Fig. 3 is the input impedance test result figure of antenna.

Fig. 4 is the reflection coefficient of power test pattern of antenna.

Fig. 5 is the reading distance test pattern of label.

Embodiment

Below in conjunction with accompanying drawing, the utility model is further described:

The utility model devises a kind of novel three-dimensional structure RFID label tag, and this label adopts 3D to print and ink jet printing combination technology first.Label is coin shape, and volume is little, therefore can be applied in easily on clothes as fixing button or dismountable garment decoration product such as brooch or badge.This tag fusion function of button/ornament and RFID identification/gate inhibition, uses and easy to carry, is the excellent current and authentication instrument of fixed group (soldier/student/visitor/participant) a certain specific occasion of coming in and going out.

As illustrated in figs. ia and ib, in the utility model, label antenna is by substrate 1-1, and label antenna (dipole bottom surface structure 1-2, dipole side structure 1-3, dipole top surface structure 1-4) and RFID chip 1-5 are formed.The overall dimension of antenna is bottom surface radius 15mm, end face radius 13mm, height 7.5mm.What substrate 1-1 adopted is that 3D prints conventional ABS material, and its specific inductive capacity is 2.8.The bottom surface structure of dipole antenna comprises couple feed ring, parallel feeder and two symmetrical clockwise 135 degree of arc-shaped structures compositions, live width 2mm.Dipole side structure 1-3 is from the end of dipole bottom surface structure 1-2, and the side along button-type extends from bottom surface to end face, live width 2mm.Dipole top surface structure 1-4 is the clockwise arc structure that two from the end of dipole side structure 1-3 are symmetrical, live width 2mm.What RFID chip 1-5 adopted is AlienHiggs4 chip, and resistance is 13.3-122j.

The application scenarios schematic diagram of label as shown in Figure 2.This label can be divided into fixed (fasteners for clothing 2-1) or detachable (Fashion and Accessories such as badge or brooch 2-2).When the people wearing this label enters gate control system, RFID reader 2-3 reads antenna 2-4 by RFID and sends signal to RFID label tag, is judged and access control switch by the identity of inspection tag feedack to these personnel.

As shown in Figure 3, measured impedance is 15+131j ohm when 920MHz, and label can reach optimal effectiveness when 920MHz in the input impedance of this antenna measurement.

As shown in Figure 4, when 920MHz, power reflection best results, shows good the reflection coefficient of power of this antenna at FCC frequency range (902-928MHz) interior label.

Label different frequency reading distance as shown in Figure 5, the reading distance farthest of antenna is 2.1m, appears at frequency 920MHz.

The advantage of RFID label tag of the present utility model comprises:

3D prints and is combined with ink-jet printing technology.The substrate of antenna is that 3D has printed, and metal construction has been printed by ink jet printing.The combination of two kinds of technology had both added the working (machining) efficiency of antenna, had taken into account again the machining precision of antenna.

Three dimensions inside dimension is compact.This label is of a size of end face radius 13mm, bottom surface radius 15mm, height 7.5mm.Size is similar to common button; Application is conveniently easy to carry.

FCC band operation is good.As shown in Figure 4, under antenna can normally be operated in FCC frequency range, be 1.4-2.1m at its reading distance of this channel.

To sum up, the utility model set forth a kind of Three-dimensional fastener shape RFID label tag, 3D is used to print the combination with ink-jet printing technology innovatively, whole label sizes is very little, and omni-directional is good on antennas orthogonal face, be applicable to be applied on various clothes as identification and gate control system assistant authentification means.What in the utility model, antenna substrate adopted is ABS material, is one of the most frequently used material during 3D prints.And other structures are all form with ink jet printing processing and fabricating, with low cost and easy to process quick accurately.In sum, the RFID label tag designed not only overcomes the planar dimension restriction of traditional RFID, but also it is little to have size, omni-directional is good, and structure is simple, and cost is low, the advantages such as application is convenient, applied widely, therefore have wide using value and market potential.

Claims (1)

1. a coin shape RFID label tag, comprises coin shape ABS substrate, bending dipole antenna and couple feed ring;

The three-dimensional coin shape structure that described ABS substrate adopts 3D to print, comprises circular end face, rounded bottom surface and crosses section sidewall;

Described dipole antenna is that straight line and sector structure combine in substrate bottom surface, and the center of circle, bottom surface crossed by this linear structure, the sector structure that two sections of Central Symmetries are arranged is serially connected; Every section of sector structure was passed through section sidewall away from one end of straight line and was extended to basement top, dipole antenna basement top also centered by symmetrically arranged sector structure;

Described couple feed ring is positioned at the linear structure side of substrate bottom surface dipole antenna, loads an AlienHiggs4RFID chip;

Described dipole antenna and couple feed ring adopt ink jet printing to print.