CN105184354B

CN105184354B - Broadband RFID electronic tag

Info

Publication number: CN105184354B
Application number: CN201510632103.4A
Authority: CN
Inventors: 王玲玲
Original assignee: Suzhou Ruibaituo Electronic Science & Technology Co ltd
Current assignee: Suzhou Ruibaituo Electronic Science & Technology Co ltd
Priority date: 2015-09-29
Filing date: 2015-09-29
Publication date: 2021-04-23
Anticipated expiration: 2035-09-29
Also published as: CN105184354A

Abstract

The invention provides a broadband RFID electronic tag, which comprises: an RFID chip 1; a loop 2 connected to the RFID chip 1; a loop 3 formed by connecting the RFID chip 1; a loop 4 bridged to the loop 2 and the loop 3, and having one end connected to the loop 2 (connection point 7) and the other end connected to the loop 3 (connection point 8); the path 5 is bridged to the loop 2 and the loop 3, one end of the path is connected with the loop 2 (a connection point 9), and the other end of the path is connected with the loop 3 (a connection point 10); a dielectric substrate 6.

Description

Broadband RFID electronic tag

Technical Field

The invention relates to the field of Radio Frequency Identification (RFID), in particular to a broadband RFID electronic tag, which has broadband characteristics and can reduce the influence and the disadvantage caused by detuning phenomenon caused by the difference of the object to be managed or installation and use in the application process.

Background

Radio Frequency Identification (RFID) technology has been rapidly developed and widely used in recent years as an important application of internet of things technology. Compared with other article management systems, such as barcode systems, RFID has irreplaceable advantages: firstly, a non-specific single article can be identified, and only one type of article can be identified without the need of a bar code; secondly, a wireless radio frequency technology is adopted, and non-contact reading can be realized; and thirdly, a plurality of articles can be read simultaneously, the method is widely applied to the fields of logistics transportation, storage, production flow management and the like, and article information can be accurately and quickly obtained so as to realize automatic identification and efficient management of the articles. An RFID system generally includes three parts, namely a reader-writer, a radio frequency tag and application software. The RFID tag is usually mounted on an identified object and comprises an antenna and a chip, wherein the antenna has the functions of receiving electromagnetic waves emitted by an RFID reader antenna, converting commands and data in the signals into electric signals and transmitting the electric signals to the RFID tag chip, and reflecting object information data on the activated tag chip to the RFID reader antenna in the form of electromagnetic waves by a backscattering method. The selection and the performance of the tag antenna are directly related to whether the communication between the chip and the reader-writer is successful or not, and the work of the whole RFID system is directly related.

In practical use, the performance of the tag is good or bad, the application occasion of the tag must be considered, and the detuning of the tag is brought by environmental factors. For example, personnel management, the tag is hung on a human body, the human body contains water and fat, and due to differences of individuals, such as age, sex, fat and thinness and different wearing modes, the frequency of the tag fluctuates to generate a detuning phenomenon; for example, in vehicle management, a label is attached to a front windshield, the glass has a dielectric constant, and the difference and fluctuation of the dielectric constant are brought by different manufacturers, model batches, production processes and the like, so that the difference of the frequency of the label is brought, and a detuning phenomenon is generated. In this case, the broadband tag can reduce the influence and disadvantage caused by the detuning phenomenon, which is very significant in practical application.

Disclosure of Invention

The invention aims to provide a broadband tag design and implementation method aiming at the detuning phenomenon of an RFID tag in practical engineering application.

The invention comprises the following steps: a broadband RFID tag, comprising: the RFID chip, four closed loops and the dielectric substrate; wherein 2 closed loops (loop a, loop B) are connected to the RFID chip by one common branch; the other 2 loops (loop C, loop D) are bridged to the first two closed loops, respectively.

In the invention, the RFID chip is in a packaging form of being bonded on a printed circuit board by COB, being welded on the circuit board by manual or SMT mounting or being welded by a flip-chip.

In the invention, 2 loops (loop A and loop B) in the four closed loops are connected with the RFID chip through a common branch.

In the invention, the other 2 loops (loop C and loop D) in the four closed loops are respectively bridged on the first two closed loops (loop A and loop B).

In the invention, the four loops can adopt various shapes of broken lines, rectangles, circles and ellipses or the combination of various shapes.

In the invention, the medium substrate can be epoxy resin, polytetrafluoroethylene, air, ceramic, plastic, wood and foam medium.

In the invention, the RFID label can be fixed on the surface or inside the object to be managed by adhesive, buckle and pouring.

In the invention, when the RFID label is installed and used, a layer of protective film or plastic shell can be covered on the whole plane of the label chip.

In the invention, when the RFID tag is installed and used, a protective cover or a plastic shell can be covered on the plane of a part of the area where the tag chip is located.

The invention has the following effects: according to the invention, the broadband RFID tag can be provided, the detuning influence in the application can be reduced and overcome, and the broadband RFID tag has the characteristics of wider applicability and strong practicability.

Drawings

Fig. 1 is a detailed schematic diagram of a broadband RFID tag according to the present invention.

Fig. 2 is a schematic diagram of an embodiment of a broadband RFID tag according to the present invention.

Fig. 3 is a schematic diagram of another embodiment of the broadband RFID tag according to the present invention.

Fig. 4 is a schematic diagram of another embodiment of the broadband RFID tag according to the present invention.

Fig. 5 is a schematic diagram of another embodiment of the broadband RFID tag according to the present invention.

Detailed Description

Fig. 1 is a detailed schematic diagram of a broadband RFID tag of the present invention.

The tag comprises several parts: (1) an RFID chip 1; (2) a loop 2 connected to the RFID chip 1; (3) a loop 3 formed by connecting the RFID chip 1; (4) the loop 4 is bridged to the loop 2 and the loop 3, one end of the loop is connected with the loop 2 (a connection point 7), and the other end of the loop is connected with the loop 3 (a connection point 8); (5) the loop 5 is bridged to the loop 2 and the loop 3, one end of the loop is connected with the loop 2 (a connection point 9), and the other end of the loop is connected with the loop 3 (a connection point 10); (6) a dielectric substrate 6.

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Indeed, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

The invention is described in further detail below with reference to the figures and the detailed description.

As shown in fig. 2, a schematic diagram of an embodiment of a broadband RFID electronic tag according to the present invention includes the following parts: (1) an RFID chip 1; (2) a loop 2 connected to the RFID chip 1; (3) a loop 3 formed by connecting the RFID chip 1; (4) the loop 4 is bridged to the loop 2 and the loop 3, one end of the loop is connected with the loop 2 (a connection point 7), and the other end of the loop is connected with the loop 3 (a connection point 8); (5) the loop 5 is bridged to the loop 2 and the loop 3, one end of the loop is connected with the loop 2 (a connection point 9), and the other end of the loop is connected with the loop 3 (a connection point 10); (6) a dielectric substrate 6. Wherein, the loop 2 and the loop 3 are rectangular, and the loop 4 and the loop 5 are broken line shapes.

As shown in fig. 3, a schematic diagram of an embodiment of a broadband RFID electronic tag according to the present invention includes the following parts: (1) an RFID chip 1; (2) a loop 2 connected to the RFID chip 1; (3) a loop 3 formed by connecting the RFID chip 1; (4) the loop 4 is bridged to the loop 2 and the loop 3, one end of the loop is connected with the loop 2 (a connection point 7), and the other end of the loop is connected with the loop 3 (a connection point 8); (5) the loop 5 is bridged to the loop 2 and the loop 3, one end of the loop is connected with the loop 2 (a connection point 9), and the other end of the loop is connected with the loop 3 (a connection point 10); (6) a dielectric substrate 6. Loop 2 and loop 3 are circular in shape, and loop 4 and loop 5 are elliptical in shape.

As shown in fig. 4, a schematic diagram of an embodiment of a broadband RFID electronic tag according to the present invention includes the following parts: (1) an RFID chip 1; (2) a loop 2 connected to the RFID chip 1; (3) a loop 3 formed by connecting the RFID chip 1; (4) the loop 4 is bridged to the loop 2 and the loop 3, one end of the loop is connected with the loop 2 (a connection point 7), and the other end of the loop is connected with the loop 3 (a connection point 8); (5) the loop 5 is bridged to the loop 2 and the loop 3, one end of the loop is connected with the loop 2 (a connection point 9), and the other end of the loop is connected with the loop 3 (a connection point 10); (6) a dielectric substrate 6. Wherein, the loop 2 and the loop 3 are combined in the shape of rectangle and circle, and the loop 4 and the loop 5 are in the shape of broken line and round angle.

As shown in fig. 5, a schematic diagram of an embodiment of a broadband RFID electronic tag according to the present invention includes the following parts: (1) an RFID chip 1; (2) a loop 2 connected to the RFID chip 1; (3) a loop 3 formed by connecting the RFID chip 1; (4) the loop 4 is bridged to the loop 2 and the loop 3, one end of the loop is connected with the loop 2 (a connection point 7), and the other end of the loop is connected with the loop 3 (a connection point 8); (5) the loop 5 is bridged to the loop 2 and the loop 3, one end of the loop is connected with the loop 2 (a connection point 9), and the other end of the loop is connected with the loop 3 (a connection point 10); (6) a dielectric substrate 6; (7) and a circular protective cover 11 covering the area of the RFID chip 1 and protecting the chip from external impact and extrusion.

The present invention may be embodied in several forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. A broadband RFID electronic tag, comprising:

an RFID chip;

a closed loop A;

a closed loop B;

a closed loop C;

a closed loop D;

a dielectric substrate;

the loop A, the loop B, the loop C and the loop D are all antenna structures, and the 2 closed loops of the loop A and the loop B are connected to the RFID chip through a common branch; the loop C is bridged to the loop A and the loop B, and the loop D is also bridged to the loop A and the loop B; loop C is connected across one side of loop a and loop B and loop D is connected across the other side of loop a and loop B.

2. A broadband RFID tag as recited in claim 1, wherein the number of closed loops is four.