CN216120746U

CN216120746U - NFC coupling antenna

Info

Publication number: CN216120746U
Application number: CN202122672973.8U
Authority: CN
Inventors: 陈亮
Original assignee: Shanghai Kaicheng Intelligent Technology Co ltd
Current assignee: Shanghai Kaicheng Intelligent Technology Co ltd
Priority date: 2021-11-03
Filing date: 2021-11-03
Publication date: 2022-03-22
Anticipated expiration: 2031-11-03

Abstract

The utility model discloses an NFC coupling antenna, and relates to the technical field of wireless communication. The antenna comprises an antenna body, wherein the antenna body comprises a ferrite layer, an FPC layer and a back glue layer which are sequentially arranged; the coil is arranged between the FPC layer and the ferrite layer and attached to the FPC layer, and the coil comprises an A coil and a B coil which are coupled with each other. The utility model discloses a coupling antenna capable of extending NFC signal extension of a device and/or preventing the NFC signal of the device from being shielded.

Description

NFC coupling antenna

Technical Field

The utility model relates to the technical field of wireless communication, in particular to an NFC coupling antenna.

Background

NFC is an abbreviation for Near Field Communication, i.e., Near Field Communication technology. NFC, developed by philips and sony, is a contactless identification and interconnection technology that enables near field wireless communication between mobile devices, consumer electronics, PCs, and smart control tools. In fact, NFC provides a simple, touch-sensitive solution, which allows consumers to exchange information, access content, and services simply and intuitively. The NFC technology allows non-contact point-to-point data transmission between electronic devices, exchanging data within ten centimeters (3.9 inches), and plays a great role in the fields of access control, public transportation, mobile payment, and the like.

The NFC technology is used more and more frequently and importantly in life, such as the patent technology with the publication number of CN 203911923U, named as electronic business card based on near field communication technology. In addition to their use in cell phones, have evolved into a number of devices. In the use process of some equipment, if an NFC antenna inside the equipment is shielded by the environment and cannot be used, or the equipment needs an extension accessory, new equipment is needed to realize the NFC signal when the NFC signal is led to the extension equipment for use.

Therefore, in order to solve the above technical problem, a new technical solution needs to be proposed to solve the problem. In particular, an NFC coupled antenna is provided.

Disclosure of Invention

The utility model provides an NFC coupling antenna, aiming at solving the technical problem that when an existing NFC antenna is shielded, five devices realize signal transmission or when the devices need to expand accessories, new devices need to be connected.

The following technical scheme is provided for achieving the purpose: an NFC coupling antenna comprises an antenna body, wherein the antenna body comprises a ferrite layer, an FPC layer and a back glue layer which are sequentially arranged; the coil is arranged between the FPC layer and the ferrite layer and attached to the FPC layer, and the coil comprises an A coil and a B coil which are coupled with each other.

Preferably, the coupling position of the coil A and the coil B is coupled and connected through a first coupling position, a second coupling position and a third coupling position.

Preferably, a protective film is further arranged on the ferrooxygen layer, and the protective film is provided with a protective film hand tearing position which exceeds the ferrooxygen layer.

Has the advantages that:

(1) the NFC signal on the original machine can be extended to another required position without contact through the NFC signal transmitting device and the NFC signal transmitting method. Or under the condition that the NFC signal of the equipment is shielded and cannot be used, the original NFC signal can be completely transferred out for use by the utility model in a mode of coupling and no direct contact.

(2) When equipment needs to add the extension accessory, original NFC antenna signal can be sheltered from to new accessory, leads to unable NFC function that uses. When the NFC signal needs to be led to the expansion device for use, the NFC signal can be directly expanded to another coil by the NFC signal expansion device.

Drawings

FIG. 1 is a schematic cross-sectional view of the main body of the present invention.

FIG. 2 is a schematic structural diagram of the coil and the coil with the protective film.

Wherein: 1. an antenna body; 11. a ferrite layer; 12. an FPC layer; 13. a back glue layer; 2. a coil; 21. a, a coil; 211. a first coupling bit; 212. a second coupling bit; 213. a third coupling bit; 22. a coil B; 31. the protection film hand tears the position.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the utility model and not to limit the scope of the utility model. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

In the description of the present invention, it should be noted that when an element is referred to as being "fixed" or "disposed" to another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present invention, it should be noted that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships in which the products of the present invention are conventionally placed when used, and are merely used for convenience of describing and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 and fig. 2, an NFC coupled antenna includes an antenna body 1, where the antenna body 1 includes a ferrite layer 11, an FPC (Flexible Printed Circuit) layer 12, and a back adhesive layer 13, which are sequentially disposed, where the ferrite layer is disposed on the front side of the FPC layer, the back adhesive layer is disposed on the back side of the FPC layer, a protection film is further attached to the ferrite layer, the protection film is provided with a protection film hand-tearing position 31 that exceeds the portion of the ferrite layer 11, the shape of the ferrite layer 11 and the shape of the coil 2 may be the same, and fig. 2 is a schematic diagram of relative positions of the protection film, the ferrite layer, and the excess portion of the coil. Be equipped with coil 2 between FPC layer 12 and ferrite layer 11, the coil is the NFC coil, coil 2 is attached on FPC layer 12, coil 2 includes A coil 21 and B coil 22 of intercoupling.

As shown in fig. 2, the coupling position of the a coil 21 and the B coil 22 is coupled and connected through a first coupling position 211, a second coupling position 212 and a third coupling position 213, wherein a capacitor is attached to the first coupling position 211, and preferably, the capacitance value is 33 PF; the second coupling position is not provided with a device, and the third coupling position is attached with a resistor. The NFC coupling antenna is composed of an A coil and a B coil which are connected with each other. The A coil is close to the antennas of other NFC devices, and can conduct the NFC signal of the original device to the position of the B coil to complete the extension or switching of the NFC signal. And conversely, the B coil is close to the antenna of other NFC equipment, so that the NFC signal of the original equipment can be conducted to the position of the A coil. The coil A and the coil B have the same functions and can be interchanged.

The utility model provides a coupling antenna which can expand an NFC signal of equipment outwards and simultaneously connect the equipment with the outside so that the NFC signal of the equipment cannot be shielded. The shape, length, and the like of the antenna may be varied to suit various devices or applications. The original NFC signal can be extended. Under the condition that the NFC chip and the circuit are not added to the new device, the use is expanded among a plurality of devices.

The above embodiments are only for illustrating the utility model and are not to be construed as limiting the utility model, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model, therefore, all equivalent technical solutions also belong to the scope of the utility model, and the scope of the utility model is defined by the claims.

Claims

1. An NFC coupled antenna, comprising an antenna body (1), characterized in that: the antenna body (1) comprises a ferrite layer (11), an FPC layer (12) and a back adhesive layer (13) which are arranged in sequence; be equipped with coil (2) between FPC layer (12) and ferrite layer (11), coil (2) are attached on FPC layer (12), coil (2) are including A coil (21) and B coil (22) of mutual coupling.

2. An NFC coupled antenna according to claim 1, wherein: the coupling position of the A coil (21) and the B coil (22) is coupled and connected through a first coupling position (211), a second coupling position (212) and a third coupling position (213).

3. An NFC-coupled antenna as claimed in claim 1 or 2 wherein: still be equipped with the protection film on ferrite layer (11), the protection film is equipped with and surpasss ferrite layer (11) partial protection film hand and tears position (31).