CN203351748U - NFC (Near Field Communication) antenna assembly and mobile phone - Google Patents

The utility model relates to an NFC (Near Field Communication) antenna assembly and a mobile phone. The NFC antenna assembly includes an antenna module, and a metal shell with a through hole; the antenna module is installed in the through hole; the antenna module comprises an inner fixing ring, a coil, a wave absorbing material, and an outer fixing ring which are fixed sequentially; and the inner fixing ring and the outer fixing ring are made of a polymer material. In the utility model, the size of the whole antenna module matches the size of the through hole. The size of the antenna module matches the size of a camera. The defect that the signal is blocked when the shell in the NFC antenna field is a metal is solved; and at the same time, the position of the camera is used for installation of the antenna module, so that the structure of the metal shell is not changed.

A kind of NFC antenna module and mobile phone

Technical field

The utility model belongs to field of antenna, relates in particular to a kind of antenna module of the NFC for the metal shell mobile terminal and mobile phone.

Background technology

NFC(near field communication) be a kind of wireless short-distance mechanics of communication, its equipment can be used as the read write line terminal of contact type intelligent card, smart card and the equipment data transmission link to equipment.NFC is a kind of closely connection protocol, provides between various device easily, safety, communication rapidly and automatically.Mainly for consumable electronic product, apply.It works in the 13.56MHz frequency range, and information exchange is crossed the transmission of electromagnetic induction coupled modes, operating distance 5CM left and right.First be applied to gradually mobile phone, panel computer etc. and use terminal.

Existing NFC antenna generally adopts FPC to cover suction ripple equipment structure.Whole antenna is attached to the back cover position of mobile terminal.The back cover of mobile terminal adopts plastic material.

At first when high-endization of the mobile terminal such as mobile phone, panel computer, attractive in appearance in order to guarantee, durable, need to adopt the housing of metal.Because general metal shell has shielding action to the NFC antenna.When the NFC antenna is affixed on enclosure interior, all signals are shielded by metal shell, can't use.

The utility model content

The shell that the utility model is the existing NFC antenna module of solution generally adopts the technical problem of plastics, and a kind of antenna module of the NFC for the metal shell mobile terminal and mobile phone are provided.

The utility model provides a kind of NFC antenna module, and described NFC antenna module comprises metal shell and the Anneta module with through hole; Anneta module is arranged in through hole; Described Anneta module comprises interior retainer ring, coil, suction ripple material and the outer retainer ring be fixedly connected sequentially; The material of described interior retainer ring and outer retainer ring is macromolecular material.

Preferably, the magnetic permeability of described suction ripple material is greater than 80, and magnetic hysteresis loss is less than 5.

Preferably, described suction ripple material is ferrite Hard Magnetic or ferrite soft magnetic.

Preferably, the interface of described interior retainer ring is C type structure, and described coil and suction ripple material are positioned at C type structure, and described outer retainer ring is wrapped in coil and suction ripple material in C type structure.Preferably, the two ends of described outer retainer ring with the end points on the both sides up and down of C type structure, be connected respectively and surface thereof with inhale the ripple material and be connected, another is surperficial is connected with metal shell.

Preferably, the two ends of described outer retainer ring are connected with the both sides up and down of C type structure respectively and surface thereof is connected with suction ripple material, and another surface is connected with metal shell; The end points on the both sides up and down of described C type structure protrudes from outer retainer ring and its part that protrudes from outer retainer ring is fixedly connected with the upper and lower surface of metal shell respectively.

Preferably, the two ends of described outer retainer ring are connected with the both sides up and down of C type structure respectively and surface thereof is connected with suction ripple material, and another surface is connected with metal shell; The end points on one side of described C type structure protrudes from outer retainer ring, and the part that the end points of the another side of described C type structure is fixedly connected with outer retainer ring and it protrudes from outer retainer ring is fixedly connected with a surface of metal shell.

Preferably, described coil is the enamel-cover copper wire.

Preferably, the diameter of described enamel-cover copper wire is 0.1-0.3mm.

Preferably, the inductance of described coil is the 0.8-3 microhenry.

The utility model also provides a kind of mobile phone, and this mobile phone comprises NFC antenna module of the present invention and camera, and described camera is positioned at through hole.

The NFC antenna module that the utility model adopts, metal shell and antenna organically combine, and meet the effect that housing is solid, attractive in appearance, reach again the effect of NFC output signal.Process the hole that can send signal on metal shell.Use can compensate the NFC antenna that this kind of housing disturbs.Mobile phone of the present utility model, the NFC antenna module is arranged in the hole of camera, in the effect that guarantees the NFC output signal, does not change the structure of mobile phone.

The accompanying drawing explanation

Fig. 1 is the structural representation of NFC antenna module of the present utility model;

Fig. 2 is the cutaway view of the NFC antenna module that provides of the utility model;

Fig. 3 is the cutaway view of a kind of execution mode of NFC antenna module of providing of the utility model;

Fig. 4 is the cutaway view of a kind of execution mode of NFC antenna module of providing of the utility model;

Fig. 5 is the cutaway view of a kind of execution mode of NFC antenna module of providing of the utility model.

Embodiment

Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.

A kind of NFC antenna module as Figure 1-5, comprising:

The magnetic permeability of inhaling the ripple material is greater than 80, and magnetic hysteresis loss is less than 15.

Inhaling the ripple material is ferrite Hard Magnetic or ferrite soft magnetic.Inhale the ripple material and can reduce the interference of metal-back to copper cash.

Macromolecular material is at least one in polyimides, polyethylene terephthalate, neopelex and Teflon.The interface of interior retainer ring is C type structure, and described coil and suction ripple material are positioned at C type structure, and described outer retainer ring is wrapped in coil and suction ripple material in C type structure.Interior retainer ring is as the carrier of whole NFC module.Inside and outside retainer ring is sticked into to integral body, and coil and suction ripple material are wrapped in wherein like this.

In one embodiment, as Fig. 3, the two ends of outer retainer ring with the end points on the both sides up and down of C type structure, be connected respectively and surface thereof with inhale the ripple material and be connected, another is surperficial is connected with metal shell.

In one embodiment, as Fig. 4, the two ends of described outer retainer ring are connected with the both sides up and down of C type structure respectively and surface thereof is connected with suction ripple material, and another surface is connected with metal shell; The end points on the both sides up and down of described C type structure protrudes from outer retainer ring and its part that protrudes from outer retainer ring is fixedly connected with the upper and lower surface of metal shell respectively.

In one embodiment, as Fig. 5, the two ends of described outer retainer ring are connected with the both sides up and down of C type structure respectively and surface thereof is connected with suction ripple material, and another surface is connected with metal shell; The end points on one side of described C type structure protrudes from outer retainer ring, and the part that the end points of the another side of described C type structure is fixedly connected with outer retainer ring and it protrudes from outer retainer ring is fixedly connected with a surface of metal shell.The material of metal shell is a kind of in aluminium alloy, copper alloy, magnesium alloy and steel alloy.Preferred aluminium alloy, copper alloy and magnesium alloy.Coil is the enamel-cover copper wire.The diameter of enamel-cover copper wire is 0.1-0.3mm.The inductance of coil is the 0.8-3 microhenry.

Antenna is fixedly connected with metal shell with outer retainer ring by interior retainer ring.Antenna is circular ring type.Camera module 4 is set in the circular ring type of antenna.

The size of whole antenna modules of the present utility model coordinates with the size of through hole.The size of antenna modules coordinates with the size of camera.The defect that when housing that has solved the NFC field of antenna is metal, signal is obstructed is utilized the position of the camera module that fixes up an aerial wire simultaneously, does not change the structure of metal shell.

Antenna is by the magnetic Field Coupling transmission of signal.Because metal material has shielding action to magnetic field, metal material can not be passed in magnetic field.This scheme is placed in coil in the middle of through hole, the coil inside magnetic line of force can pass through in the middle of through hole, the magnetic line of force of coil outside can pass through in the high magnetic permeability suction ripple material in the middle of coil and metal shell, reaches spatial distribution and the intensity in magnetic field with this, thereby enough communication effects are arranged.

The utility model also provides a kind of mobile phone, and this mobile phone comprises NFC antenna module of the present invention and camera, and described camera is positioned at through hole.

The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.