CN106410400B - Communication equipment with metal shell and NFC structure thereof - Google Patents
Communication equipment with metal shell and NFC structure thereof Download PDFInfo
- Publication number
- CN106410400B CN106410400B CN201610908110.7A CN201610908110A CN106410400B CN 106410400 B CN106410400 B CN 106410400B CN 201610908110 A CN201610908110 A CN 201610908110A CN 106410400 B CN106410400 B CN 106410400B
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- CN
- China
- Prior art keywords
- nfc
- metal shell
- metal
- metal frame
- shell body
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive loop type
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/04—Metal casings
Abstract
The application provides a communication device with a metal shell and an NFC structure thereof, comprising the metal shell of the communication device and a plurality of inductance elements. The metal shell of the near field communication device comprises a top metal frame, a side metal frame and a metal shell body. The plastic region is arranged between the top metal frame and the metal shell body, and two break points are arranged on the top metal frame. The inductance element can be connected at the breakpoint of the top metal frame on one hand, so that a closed loop is formed; on the other hand, through the low-resistance high-resistance characteristic of the inductor, mutual influence between NFC and radio frequency antenna can be avoided. The application has the following advantages: the NFC antenna and ferrite are not needed, so that the space is saved, and the cost is saved; the grooving treatment is not needed, the design is simple, and the appearance of the product is not damaged; the loop is provided with a series inductance, so that the mutual influence between NFC and radio frequency antenna can be avoided; directly uses the metal shell radiation, has even magnetic field and excellent performance.
Description
Technical Field
The present application relates to an NFC antenna, and in particular, to an NFC structure suitable for a near field communication device having a metal case structure and the communication device, and more particularly, to an NFC structure based on a metal back case without an FPC (flexible circuit board, flexible Printed Circuit) antenna.
Background
Needless to say, the application of NFC (Near Field Communication) near field communication technology in electronic products has been increasingly widespread in recent years.
The traditional electronic product is carried with the NFC antenna by attaching the antenna inside the plastic shell. The carrying mode has simple technological requirements, and the plastic shell does not interfere or shield electromagnetic radiation of the NFC antenna, so that NFC performance is quite good.
However, with the appearance of electronic products, the structural requirements are higher and the thickness requirements are thinner, and the like, and the traditional plastic shell electronic products cannot meet all user requirements due to the plastic appearance, mechanical strength, use experience and the like. Accordingly, electronic products with metal shell structures have been developed. Almost all of the current middle-high-end electronics use an all-metal or partially-metal housing appearance. However, electromagnetic waves cannot radiate through the metal casing, which also causes that the conventional NFC antenna is difficult to couple with external communication equipment, and the communication performance is greatly reduced. It is the most urgent thing at present to solve the NFC design problem under the electronic products having the metal case structure.
Disclosure of Invention
In view of the drawbacks of the prior art, an object of the present application is to provide a communication device with a metal housing and an NFC structure thereof.
The NFC structure comprises a metal shell, an insulator, an inductance element and an NFC radio frequency circuit module;
the metal shell comprises a metal shell body and a top metal frame; the metal shell body is connected with the top metal frame through an insulator;
the NFC radio frequency circuit module, the inductance element and the top metal frame are connected to form a circuit loop.
Preferably, the top metal frame is provided with one or more break points to form a multi-section frame body;
one section or a plurality of sections of frame bodies are connected in the circuit loop.
Preferably, both ends of the breakpoint are connected to the circuit loop, wherein an inductance element or an NFC radio frequency circuit module is connected between both ends of the breakpoint; alternatively, only one of the two ends of the breakpoint is connected to the circuit loop.
Preferably, the NFC radio circuit module is disposed on a metal shell body or an insulator.
Preferably, the metal shell comprises a side metal rim;
the side metal frame is connected between the metal shell body and the top metal frame;
the number of the side metal frames is one or more;
the side metal frame is connected in the circuit loop.
Preferably, a side metal frame is respectively connected between two ends of the top edge of the metal shell body and two ends of the top metal frame.
Preferably, the side metal frame, the top metal frame and the top edge of the metal shell body are respectively attached to different edges of the connecting insulator.
Preferably, the circuit loop forms an antenna, and the area surrounded by the circuit loop forms a radiation area.
Preferably, the surface of the metal shell body is complete.
According to the application, the communication equipment with the metal shell comprises the NFC structure.
Compared with the prior art, the application has the following beneficial effects:
1, an FPC antenna and ferrite are not needed, so that the space is saved, and the cost is saved;
2, slotting treatment is not needed, the design is simple, and the appearance of the product is not damaged;
3, a series inductance is arranged in the loop, so that the mutual influence between NFC and radio frequency antenna can be avoided;
4, directly utilizing the metal shell radiation, the magnetic field is uniform, and the performance is excellent.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
fig. 1 is a schematic structural diagram of an NFC structure in a first embodiment of the present application.
Fig. 2 is a schematic diagram of current distribution of an NFC structure according to a first embodiment of the present application.
Fig. 3, fig. 4, and fig. 5 are schematic structural diagrams of 3 different arrangements of NFC structures in the second embodiment of the present application.
Fig. 6 is a schematic structural diagram of an NFC structure in a third embodiment of the present application.
Fig. 7 and 8 are schematic structural diagrams of 2 different arrangements of NFC structures in a fourth embodiment of the present application.
In the figure:
1 is a metal shell, 11 is a metal shell body, 12 is a side metal frame, and 13 is a top metal frame;
2 is an inductance element, a first inductance 21, a second inductance 22, and a third inductance 23;
3 is a plastic region;
and 4 is an NFC radio frequency circuit module.
Detailed Description
The present application will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present application, but are not intended to limit the application in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present application.
The NFC structure comprises a metal shell, an insulator, an inductance element and an NFC radio frequency circuit module; the metal shell comprises a metal shell body and a top metal frame; the metal shell body is connected with the top metal frame through an insulator; the NFC radio frequency circuit module, the inductance element and the top metal frame are connected to form a circuit loop. The top metal frame is provided with one or more break points to form a multi-section frame body; one section or a plurality of sections of frame bodies are connected in the circuit loop. Both ends of the breakpoint are connected into the circuit loop, wherein an inductance element or an NFC radio frequency circuit module is connected between the two ends of the breakpoint; alternatively, only one of the two ends of the breakpoint is connected to the circuit loop.
The NFC radio frequency circuit module is arranged on the metal shell body or the insulator. The metal shell comprises a side metal frame; the side metal frame is connected between the metal shell body and the top metal frame; the number of the side metal frames is one or more; the side metal frame is connected in the circuit loop. And two ends of the top edge of the metal shell body and two ends of the top metal frame are respectively connected with a side metal frame. The side metal frame, the top metal frame and the top edge of the metal shell body are respectively attached to different edges of the insulator. The circuit loop forms an antenna, and the area surrounded by the circuit loop forms a radiation area. The surface of the metal shell body is complete.
Therefore, the NFC antenna can realize NFC function, does not need FPC antenna and ferrite, saves space and saves cost; the grooving treatment is not needed, the design is simple, and the appearance of the product is not damaged; the loop is provided with a series inductance, so that the mutual influence between NFC and radio frequency antenna can be avoided; directly uses the metal shell radiation, has even magnetic field and excellent performance.
The preferred embodiments of the present application will be described in detail below.
Example 1.
As shown in fig. 1, the NFC structure of a metal shell provided by the present application includes a metal shell 1, an inductance element 2, and an insulator; the metal shell 1 includes a metal shell body 11, a side metal rim 12, and a top metal rim 13. The plastic region 3 is arranged between the top metal frame 13 and the metal shell body 11. The insulator is made of plastic material, and a plastic region for isolating the metal shell body 11 and the top metal frame 13 is formed. The inductance element 2 uses a high Q value inductance. The surface of the metal shell body is complete and has no slot.
The inductance element 2 includes a first inductance 21, a second inductance 22, and a third inductance 23. Two break points are arranged on the top metal frame and are divided into a first break point and a second break point. Two ends of the first breakpoint are respectively connected with one end of a first inductor 21 and one end of a second inductor 22; the other end of the first inductor 21 and the other end of the second inductor 22 are connected with the NFC radio frequency circuit module 4; a third inductor 23 is connected in series between the two ends of the second section point. The first inductor 21, the second inductor 22 and the third inductor 23 may be connected at the top metal frame break point on the one hand, so that the metal shell body 11, the side metal frame 12 and the top metal frame 13 form a closed circuit loop as an antenna; on the other hand, the NFC antenna is connected in series in the circuit loop through the low-resistance high-resistance characteristic of the inductance, so that mutual influence between NFC and the radio frequency antenna is avoided.
As shown in fig. 2, when in operation, the NFC radio frequency circuit module sends an alternating current signal (taking a counter-clockwise current trend as an example), and the alternating current signal passes through the first inductor 21 to the left side of the circuit loop and then to the metal shell body, and due to the skin effect principle of the current, the current signal is concentrated and transmitted to the right side of the loop through the edge of the metal shell body, which is close to the plastic region 3, and then returns to the NFC radio frequency circuit module 4 through the third inductor 23 and the second inductor 22 in sequence.
The connection manner or position of the inductance element in this embodiment is modified, and a variation of the present application can be obtained.
Example 2.
As shown in fig. 3 and 5, the third inductor 23 is disconnected from one end of the top metal frame 13 and connected to the metal shell body 11, or as shown in fig. 4, the first inductor 21 is disconnected from one end of the top metal frame 13 and connected to the metal shell body 11, so that three NFC structures of the present application having different loops and different radiation areas can be obtained. The series of NFC structures are suitable for communication devices where the inductive element connection location or manner is not satisfactory as in the case of fig. 1.
Example 3.
As shown in fig. 6, in the NFC structure, under the condition that the metal frame 12 and the metal shell body 11 on both sides are not used for radiation, a portion between the first break point and the second break point of the top metal frame 13 may be directly connected to the inductive element 2 and then connected to the NFC radio frequency circuit. The radiation area in this embodiment is composed of a top metal frame 13, an inductance element 2, and wires connecting the top metal frame 13 and the inductance element 2, and connecting the inductance element 2 and the NFC radio frequency circuit.
Example 4.
As shown in fig. 7 and 8, in the case that the top metal frame 13 of the communication device has only one break point, two NFC structures according to the present application can be still formed.
Example 2, example 3, and example 4 can be understood as modifications of example 1.
The foregoing describes specific embodiments of the present application. It is to be understood that the application is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the application. The embodiments of the application and the features of the embodiments may be combined with each other arbitrarily without conflict.
Claims (8)
1. The NFC structure is characterized by comprising a metal shell, an insulator, an inductance element and an NFC radio frequency circuit module;
the metal shell comprises a metal shell body and a top metal frame; the metal shell body is connected with the top metal frame through an insulator;
the NFC radio frequency circuit module, the inductance element and the top metal frame are connected to form a circuit loop;
the top metal frame is provided with one or more break points to form a multi-section frame body;
one section or a plurality of sections of frame bodies are connected in the circuit loop;
the NFC radio frequency circuit module is arranged on the metal shell body or the insulator.
2. The NFC architecture according to claim 1, wherein both ends of a breakpoint are connected to the circuit loop, and wherein an inductive element or an NFC radio frequency circuit module is connected between both ends of the breakpoint; alternatively, only one of the two ends of the breakpoint is connected to the circuit loop.
3. The NFC structure according to claim 1 wherein the metal housing includes a side metal bezel;
the side metal frame is connected between the metal shell body and the top metal frame;
the number of the side metal frames is one or more;
the side metal frame is connected in the circuit loop.
4. A NFC structure according to claim 3 wherein a side metal frame is connected between two ends of the top edge of the metal shell body and two ends of the top metal frame.
5. A NFC structure according to claim 3 wherein the side metal rims, top metal rim, top metal shell body rim are respectively attached to different edges of the connection insulator.
6. An NFC structure according to claim 1 wherein the circuit loop forms an antenna and the area enclosed by the circuit loop forms a radiating area.
7. NFC structure according to claim 1 wherein the surface of the metal shell body is complete.
8. A communication device with a metal casing, characterized by comprising an NFC structure according to any of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610908110.7A CN106410400B (en) | 2016-10-18 | 2016-10-18 | Communication equipment with metal shell and NFC structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610908110.7A CN106410400B (en) | 2016-10-18 | 2016-10-18 | Communication equipment with metal shell and NFC structure thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106410400A CN106410400A (en) | 2017-02-15 |
| CN106410400B true CN106410400B (en) | 2023-09-26 |
Family
ID=58011933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610908110.7A Active CN106410400B (en) | 2016-10-18 | 2016-10-18 | Communication equipment with metal shell and NFC structure thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN106410400B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2559621A (en) * | 2017-02-14 | 2018-08-15 | Kiroco Ltd | Wearable device, system and method |
| CN106921033A (en) * | 2017-03-02 | 2017-07-04 | 上海德门电子科技有限公司 | Electronic equipment frame antenna structure |
| CN108288754A (en) * | 2017-10-27 | 2018-07-17 | 珠海市魅族科技有限公司 | Antenna module and terminal device |
| CN108288753A (en) * | 2017-10-27 | 2018-07-17 | 珠海市魅族科技有限公司 | Antenna module and terminal device |
| CN112583959B (en) * | 2019-09-30 | 2021-12-14 | 华为技术有限公司 | Radio frequency cable and electronic equipment |
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| CN105633556A (en) * | 2016-03-07 | 2016-06-01 | 上海安费诺永亿通讯电子有限公司 | Near field communication (NFC) device and mobile terminal based on same |
| CN105826679A (en) * | 2016-05-12 | 2016-08-03 | 惠州硕贝德无线科技股份有限公司 | Near-field antenna apparatus for three-segment type metal rear cover |
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2016
- 2016-10-18 CN CN201610908110.7A patent/CN106410400B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2015117483A1 (en) * | 2014-08-21 | 2015-08-13 | 中兴通讯股份有限公司 | Antenna system |
| EP2988368A1 (en) * | 2014-08-21 | 2016-02-24 | Samsung Electronics Co., Ltd. | Antenna apparatus and electronic device having the same |
| CN104577334A (en) * | 2015-02-11 | 2015-04-29 | 小米科技有限责任公司 | Antenna module and mobile terminal |
| CN105514624A (en) * | 2015-12-23 | 2016-04-20 | 广东欧珀移动通信有限公司 | Mobile terminal antenna system and mobile terminal |
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| CN106410400A (en) | 2017-02-15 |
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