CN110168807A - A kind of antenna module and terminal - Google Patents
A kind of antenna module and terminal Download PDFInfo
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- CN110168807A CN110168807A CN201780082202.7A CN201780082202A CN110168807A CN 110168807 A CN110168807 A CN 110168807A CN 201780082202 A CN201780082202 A CN 201780082202A CN 110168807 A CN110168807 A CN 110168807A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/44—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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Abstract
The embodiment of the present application provides a kind of antenna module and terminal, it is related to antenna technical field, the terminal includes nonmetallic rear shell, mainboard, battery and coupling line ring layer, wherein, the inner surface of nonmetallic rear shell is equipped with thermal conductor layer, thermal conductor layer slots to form NFC antenna coil, and mainboard is opposite with thermal conductor layer, and mainboard is equipped with feeding point；Battery and mainboard are arranged along the direction for being parallel to thermal conductor layer；Coupling line ring layer is set between mainboard and thermal conductor layer, and it is arranged with battery along the direction for being parallel to thermal conductor layer, coupling line ring layer is connect with the feeding point on mainboard, is capable of forming Space Coupling between coupling line ring layer and thermal conductor layer, and thermal conductor layer is made to generate secondary radiation.
Description
This application involves antenna technical field more particularly to a kind of antenna module and terminals.
With the universal and development of mobile payment technology, more and more terminals support NFC (Near Field Communication, near-field communication technology) function, NFC is a kind of non contact angle measurement and interconnection technique, can carry out wireless near field communication between mobile device, consumer electronics product, PC and smart control tool.NFC provides a kind of simple, touch solution, exchanges information, access content and service with can allowing consumer's simple, intuitive.
NFC is made of NFC module and NFC antenna.NFC module is generally made of a high-speed microprocessor, radio frequency chip and match circuit.NFC module is set in the mainboard of terminal, the feeding point connection of NFC antenna and mainboard.Wherein, NFC antenna is with RFID (Radio Frequency Identification, radio frequency identification) based on technology, coupling matching is total to using transformer and does the hardware handles scheme communicated, and the verification of data transfer procedure is completed by the communication instruction of processor, hardware environment designs and produces successfully by RFID modulation treatment, and by match circuit adjustment.The working frequency of common NFC antenna is 13.56Mhz, and since 13.56Mhz wavelength is very long, and reading/writing distance is very short, and therefore, the size of NFC antenna is most important for promoting user experience.NFC antenna area is bigger, then its identifiable range is bigger, then user experience is better.But the NFC antenna of larger area needs individually to occupy a sheaf space, so that the complete machine thickness that will lead to terminal increases, is unfavorable for the lightening of terminal device.
Summary of the invention
Embodiments herein provides antenna module and terminal, to reduce the thickness space that NFC antenna occupies in terminal.
In order to achieve the above objectives, embodiments herein adopts the following technical scheme that
In a first aspect, the application provides a kind of terminal, including nonmetallic rear shell, mainboard, battery and coupling line ring layer, wherein, the inner surface of nonmetallic rear shell is equipped with thermal conductor layer, and thermal conductor layer slots to form NFC antenna coil, mainboard is opposite with thermal conductor layer, and mainboard is equipped with feeding point；Battery and mainboard are arranged along the direction for being parallel to thermal conductor layer；Coupling line ring layer is set between mainboard and thermal conductor layer, and it is arranged with battery along the direction for being parallel to thermal conductor layer, coupling line ring layer is connect with the feeding point on mainboard, is capable of forming Space Coupling between coupling line ring layer and thermal conductor layer, and thermal conductor layer is made to generate secondary radiation.
Terminal provided by the embodiments of the present application, thermal conductor layer fluting is formd into NFC antenna coil, and is capable of forming Space Coupling between coupling line ring layer and thermal conductor layer, therefore, it can be then inspired induced current in the NFC antenna coil that thermal conductor layer is formed, induced current can then generate secondary radiation.The thermal conductor layer radiating element final as NFC antenna is utilized in the embodiment of the present application, the area of thermal conductor layer can meet the needs of NFC antenna is for identification range, and coupling line ring layer is used only for coupling thermal conductor layer, therefore the area of coupling line ring layer can be done small, coupling line ring layer is set to correspond to the position setting of mainboard and arrange with battery along the direction for being parallel to thermal conductor layer, to be not take up thickness space, keep end product more frivolous.
In possible implementation, thermal conductor layer is connected with matching circuit module, and NFC antenna coil is open
Aerial coil, matching circuit module connect to form closed ring current access with NFC antenna coil.Can adjust the working frequency of NFC antenna coil by adjusting matching circuit module as a result, for example, adjustable NFC antenna working frequency to common 13.56Mhz.Since the thickness of matching circuit module is more thicker than thermal conductor layer, complete machine thickness increases in order to prevent, the lesser component Corresponding matching circuit module of thickness on mainboard can be arranged, be avoided with the thickness to matching circuit module, due to the area very little of matching circuit module, evacuation is easily achieved.
In possible implementation, matching circuit module be may be disposed on mainboard.At this time, it may be necessary to which connecting line is arranged between mainboard and thermal conductor layer, matching circuit module is connect with thermal conductor layer.Specifically, connecting line one end can be connect with the matching circuit module on mainboard, the other end of connecting line is crimped with thermal conductor layer by crimping structure, in order to nonmetallic rear shell opening.
In another possible implementation, matching circuit module may also set up on the inner surface of nonmetallic rear shell, at this time, only thermal conductor layer and matching circuit module need to be connected into loop in nonmetallic rear shell, it does not need to connect with mainboard, this connection structure is easy to implement and will not influence the unlatching of nonmetallic rear shell.
In possible implementation; since the avoid holes for avoiding camera would generally be offered in thermal conductor layer; a part using avoid holes as NFC antenna coil at this time; specifically; elongated slot is offered in thermal conductor layer, the first edge of one end perforation thermal conductor layer of elongated slot, the other end and avoid holes penetrate through; the two sides of elongated slot are respectively equipped with a tie point, and two tie points are connect with two interfaces of matching circuit module respectively.Thus it can simplify grooving processes.The magnetic flux near camera can be made larger, can be convenient for reference using camera as center when swiping the card when in use, improve recognition speed and precision.
In possible implementation, NFC antenna coil is closed aerial coil, and closed aerial coil makes to form closed ring current access inside thermal conductor layer.This structure needs the structure by adjusting closed aerial coil to adjust the working frequency of NFC antenna coil, does not need matching connection circuit module, can simplify manufacture craft, and is connectionless between thermal conductor layer and mainboard, will not influence nonmetallic rear shell and opens.
In possible implementation, the avoid holes for avoiding camera are offered in thermal conductor layer, orthogonal first elongated slot and the second elongated slot are offered in thermal conductor layer, first elongated slot close to thermal conductor layer the first edge setting and it is parallel with the first edge of thermal conductor layer, second elongated slot one end and the first elongated slot penetrate through, and the other end and avoid holes penetrate through.This structure can change the length and width of the first elongated slot only to adjust the working frequency of NFC antenna coil, achieve the purpose that adjust working frequency by structure change few as far as possible, prevent excessive waste.
In possible implementation, coupling line ring layer close to thermal conductor layer surface and battery close to thermal conductor layer flush.It can make coupling line ring layer under the premise of being no more than the thickness range of battery as far as possible far from mainboard as a result, to avoid having an impact the heat dissipation of mainboard.
In possible implementation, coupling line ring layer includes FPC (Flexible Printed Circuit, flexible circuit board) and the coupling coil that is set to inside FPC.FPC thinner thickness occupies little space and at low cost.
In possible implementation, the projection of the region of the thermal conductor layer fluting on the main board is staggered with the element for needing to radiate on the mainboard, and the projection of the coupling line ring layer on the main board is staggered with the element for needing to radiate on the mainboard.This prevents the heat dissipations that the fluting of thermal conductor layer and coupling line ring layer influence the element that heat is high on mainboard.
In possible implementation, the gap between thermal conductor layer and coupling line ring layer is 0.2~0.3 millimeter.This gap range may make the coupling effect between thermal conductor layer and coupling line ring layer more preferable.
In possible implementation, coupling line ring layer is equipped with ferrite layer towards the surface of mainboard.Ferrite layer can
The magnetic field that the vortex for preventing mainboard inner conductor surface from generating weakens coupling line ring layer improves the coupling effect between thermal conductor layer and coupling line ring layer to increase magnetic flux.
Second aspect, the application provide another terminal, including nonmetallic rear shell and mainboard, and the inner surface of nonmetallic rear shell is equipped with thermal conductor layer, and thermal conductor layer slots to form NFC antenna coil；Mainboard is opposite with thermal conductor layer, and mainboard is equipped with feeding point, and NFC antenna coil is connect with the feeding point on mainboard.
Terminal provided by the embodiments of the present application, thermal conductor layer is directly connect with the feeding point on mainboard, using thermal conductor layer as the radiating element of NFC antenna, the area of thermal conductor layer can meet the needs of NFC antenna is for identification range, and without increasing other devices, complete machine thickness does not change, and the thickness space of complete machine is occupied so as to avoid NFC antenna.
In the possible implementation of second aspect, thermal conductor layer is equipped with ferrite layer towards the surface of mainboard.The vortex that ferrite layer can prevent mainboard inner conductor surface from generating weakens the magnetic field of thermal conductor layer, to improve the performance of NFC antenna.
The third aspect, the application provide a kind of mobile phone, including nonmetallic rear shell, and the inner surface of nonmetallic rear shell is equipped with thermal conductor layer, and thermal conductor layer slots to form NFC antenna coil；Mainboard, mainboard and thermal conductor layer are arranged along the thickness direction of mobile phone, and mainboard is equipped with feeding point；Battery, battery and mainboard are arranged along the length direction of mobile phone；FPC, aerial coil is formed in FPC, FPC is set between mainboard and thermal conductor layer, and FPC and battery are arranged along the length direction of mobile phone, feeding point connection on aerial coil and mainboard in FPC, it is capable of forming Space Coupling between aerial coil and thermal conductor layer in FPC, the NFC antenna coil of thermal conductor layer is made to generate secondary radiation；Matching circuit module, matching circuit module are set on the inner surface of nonmetallic rear shell, and NFC antenna coil is open aerial coil, and matching circuit module connect to form closed ring current access with NFC antenna coil.
Mobile phone provided by the embodiments of the present application, thermal conductor layer fluting is formd into NFC antenna coil, and Space Coupling is capable of forming between the aerial coil and thermal conductor layer in FPC, thermal conductor layer is set to generate secondary radiation, therefore, the thermal conductor layer radiating element final as NFC antenna is utilized, the area of thermal conductor layer can meet the needs of NFC antenna is for identification range, and the aerial coil in FPC is used only for coupling thermal conductor layer, therefore the area of FPC can be done small, FPC is set to correspond to the position setting of mainboard and arrange with the length direction of cell mobile phone, to be not take up the thickness space of mobile phone, keep mobile phone more frivolous.
Fourth aspect, the application provide a kind of antenna module, including nonmetallic rear shell, and the inner surface of nonmetallic rear shell is equipped with thermal conductor layer, and thermal conductor layer slots to form NFC antenna coil；Coupling line ring layer, coupling line ring layer is parallel with thermal conductor layer and interval is arranged, and is capable of forming Space Coupling between coupling line ring layer and thermal conductor layer, and thermal conductor layer is made to generate secondary radiation.
Antenna module provided by the embodiments of the present application, thermal conductor layer fluting is formd into NFC antenna coil, and Space Coupling is capable of forming between coupling line ring layer and thermal conductor layer, thermal conductor layer is set to generate secondary radiation, therefore, the thermal conductor layer radiating element final as NFC antenna is utilized, the area of thermal conductor layer can meet the needs of NFC antenna is for identification range, and coupling line ring layer is used only for coupling thermal conductor layer, therefore the area of coupling line ring layer can be done small, and coupling line ring layer is made to be not take up thickness space.
In the possible implementation of fourth aspect, thermal conductor layer is connected with matching circuit module, and NFC antenna coil is open aerial coil, and matching circuit module connect to form closed ring current access with NFC antenna coil.Can adjust the working frequency of NFC antenna coil by adjusting matching circuit module as a result, for example, adjustable NFC antenna working frequency to common 13.56Mhz.Specifically, matching circuit module can be definite value inductance, by more
The definite value inductance of different model is changed to adjust the working frequency of NFC antenna coil.
In the possible implementation of fourth aspect, matching circuit module may be disposed on the inner surface of nonmetallic rear shell, at this point, only thermal conductor layer and matching circuit module need to be connected into loop in nonmetallic rear shell, this connection structure is easy to implement and will not influence the unlatching of nonmetallic rear shell.
In the possible implementation of fourth aspect; since the avoid holes for avoiding camera would generally be offered in thermal conductor layer; a part using avoid holes as NFC antenna coil at this time; specifically; elongated slot is offered in thermal conductor layer, the first edge of one end perforation thermal conductor layer of elongated slot, the other end and avoid holes penetrate through; the two sides of elongated slot are respectively equipped with a tie point, and two tie points are connect with two interfaces of matching circuit module respectively.Thus it can simplify grooving processes.The magnetic flux near camera can be made larger, can be convenient for reference using camera as center when swiping the card when in use, improve recognition speed and precision.
In the possible implementation of fourth aspect, NFC antenna coil is closed aerial coil, and closed aerial coil makes to form closed ring current access inside thermal conductor layer.This structure needs the structure by adjusting closed aerial coil to adjust the working frequency of NFC antenna coil, does not need matching connection circuit module, can simplify manufacture craft, and will not influence nonmetallic rear shell and open.
In the possible implementation of fourth aspect, the avoid holes for avoiding camera are offered in thermal conductor layer, orthogonal first elongated slot and the second elongated slot are offered in thermal conductor layer, first elongated slot close to thermal conductor layer the first edge setting and it is parallel with the first edge of thermal conductor layer, second elongated slot one end and the first elongated slot penetrate through, and the other end and avoid holes penetrate through.This structure can change the length and width of the first elongated slot only to adjust the working frequency of NFC antenna coil, achieve the purpose that adjust working frequency by structure change few as far as possible, prevent excessive waste.
In the possible implementation of fourth aspect, coupling line ring layer includes FPC and the coupling coil that is set to inside FPC.FPC thinner thickness occupies little space and at low cost.
In the possible implementation of fourth aspect, the gap between thermal conductor layer and coupling line ring layer is 0.2~0.3 millimeter.This gap range may make the coupling effect between thermal conductor layer and coupling line ring layer more preferable.
In the possible implementation of fourth aspect, coupling line ring layer is equipped with ferrite layer towards the surface of mainboard.When antenna module in terminal in use, the conductive surface in the mainboard that ferrite layer can prevent terminal generate vortex weaken coupling line ring layer magnetic field improve the coupling effect between thermal conductor layer and coupling line ring layer to increase magnetic flux.
Fig. 1 is a kind of cross section structure schematic diagram of mobile phone；
Fig. 2 is the front view of the embodiment of the present application mobile phone；
Fig. 3 is the cross section structure schematic diagram of the mobile phone of the embodiment of the present application one；
Fig. 4 is the decomposition texture schematic diagram of mainboard in the mobile phone of the embodiment of the present application one, coupling line ring layer and thermal conductor layer；
Fig. 5 is located at decomposition texture schematic diagram when nonmetallic rear shell for matching circuit module in the mobile phone of the embodiment of the present application one；
Fig. 6 is decomposition texture schematic diagram when NFC antenna coil is closed in the mobile phone of the embodiment of the present application one；
Fig. 7 is the decomposition texture schematic diagram of mainboard in the mobile phone of the embodiment of the present application two, coupling line ring layer and thermal conductor layer；
Fig. 8 is the structural schematic diagram of the antenna module of the embodiment of the present application four.
The invention relates to a kind of terminal, which can be mobile terminal, mobile terminal may include mobile phone,
Tablet computer, PDA (Personal Digital Assistant, personal digital assistant), POS (Point of Sales, point-of-sale terminal), vehicle-mounted computer etc..The embodiment of the present invention does not do the concrete form of terminal specifically limited.
Mobile terminal may include mainboard, rear shell, thermal conductor layer, NFC antenna, and above-mentioned component is briefly described below.
Mainboard: mainboard is also known as main control board, motherboard, system board, logic card, motherboard, bottom plate etc., may include NFC module and feeding point etc..Wherein, NFC module is generally made of a high-speed microprocessor, radio frequency chip and match circuit, and match circuit is used to adjust the working frequency of NFC antenna.
Rear shell: being covered on the shell of mobile phone back, for protecting interior of mobile phone element.
Thermal conductor layer: being formed in the heat carrier material layer of mobile phone battery cover inner surface, specifically can be double-layer graphite, graphite adds the good conductor of copper foil or graphene etc.For dispersing the even heat of mobile phone battery cover, mobile phone battery cover hot-spot is prevented.
NFC antenna: being based on RFID technique, coupling matching is total to using transformer and does the hardware handles scheme communicated, and the verification of data transfer procedure is completed by the communication instruction of processor, hardware environment designs and produces successfully by RFID modulation treatment, and by match circuit adjustment.NFC antenna is generally made of coiling/printing/circuit coil of etch process production and the Ferrite Material of anti-interference ability.
Furthermore, mobile terminal can also include: RF (Radio Frequency, radio frequency) components such as circuit, memory, other input equipments, display screen, sensor, I/O subsystem, processor, power management chip, camera, bluetooth module, virtual key, physical button, details are not described herein.
It will be understood by those skilled in the art that the restriction of the structure of above-mentioned mobile terminal not structure paired terminal, may include perhaps combining certain components than illustrating more or fewer components and perhaps splitting certain components or different component layouts.Skilled person is understood that display screen belongs to user interface (UI, User Interface), and mobile phone may include than diagram or less user interface.
In the examples below, terminal can take the mobile phone as an example, and certainly, the electronic equipment of the embodiment of the present application is not limited to mobile phone.With the increasingly raising of electronic component integrated level, mobile phone constantly develops towards more lightening direction, also higher and higher to the framework and performance requirement of NFC antenna.
Fig. 1 is a kind of partial structure diagram in mobile phone section.Referring to Fig.1; mobile phone includes the mainboard 01 and battery 02 along X-direction shown in FIG. 1 arrangement; the top of battery 02 and mainboard 01 is equipped with NFC antenna 03; the thickness of battery 02 is greater than the thickness of mainboard 01; bracket 04 is equipped between NFC antenna 03 and mainboard; bracket 04 can increase complete machine intensity, provide buffer protection to mainboard 01.It is found by the applicant that can only stack and be arranged with 02 through-thickness of battery since the area of NFC antenna 03 is larger in the program, it thus will lead to the increase of complete machine thickness, be unfavorable for the lightening of mobile phone.
Embodiment one,
To solve the above problems, the embodiment of the present application provides a kind of structural design scheme of mobile phone, as shown in figures 2-3.The mobile phone 100 of the embodiment of the present application, including nonmetallic rear shell 1, mainboard 2, battery 3 and coupling line ring layer 4, wherein, the inner surface of nonmetallic rear shell 1 is equipped with thermal conductor layer 5, the fluting of thermal conductor layer 5 forms NFC antenna coil, mainboard 2 and thermal conductor layer 5 are opposite, and mainboard 2 is equipped with feeding point (not shown)；Battery 3 and mainboard 2 are arranged along the direction for being parallel to thermal conductor layer 5；Coupling line ring layer 4 is set between mainboard 2 and thermal conductor layer 5, and it is arranged with battery 3 along the direction for being parallel to thermal conductor layer 5, coupling line ring layer 4 is connect with the feeding point on mainboard 2, is capable of forming Space Coupling between coupling line ring layer 4 and thermal conductor layer 5, and thermal conductor layer 5 is made to generate secondary radiation.
Mobile phone provided by the embodiments of the present application, the fluting of thermal conductor layer 5 is formd into NFC antenna coil, and Space Coupling is capable of forming between coupling line ring layer 4 and thermal conductor layer 5, therefore, it can be then inspired induced current in the NFC antenna coil that thermal conductor layer 5 is formed, induced current can then issue secondary radiation.Thus, the radiating element final as NFC antenna of thermal conductor layer 5 is utilized, grooving processes not will increase the thickness of thermal conductor layer 5, the area of thermal conductor layer 5 can meet the needs of NFC antenna is for identification range, and coupling line ring layer 4 is used only for coupling thermal conductor layer 5, therefore the area of coupling line ring layer 4 can do small, makes the position setting of the corresponding mainboard 2 of coupling line ring layer 4 and arranges with battery 3 along the direction for being parallel to thermal conductor layer 5, to be not take up thickness space, keep end product more frivolous.
As shown in Figure 4, mainboard 2 is equipped with NFC chip 21 and match circuit 22, and the feeding point on mainboard 2 is connect with match circuit 22, and the connection type of coupling line ring layer 4 and feeding point can be differential feed mode, it is also possible to non-differential end fed mode, it is not limited here.
It should be understood that the fluting of thermal conductor layer 5 forms NFC antenna coil, wherein fluting can be completed by etch process, i.e., chemical reaction is can be used into some materials of thermal conductor layer 5 or physical shock method removes, ultimately form NFC antenna loop construction.Which kind of do not limited using technique specifically.The shape that thermal conductor layer 5 is slotted is also possible to various shapes, such as round, oval, rectangular, triangle, and it is not limited here, the aerial coil formed after fluting can be enclosed construction and be also possible to Open architecture.
Fig. 4 show a kind of embodiment of open aerial coil, and NFC antenna coil shown in Fig. 4 is open aerial coil, and matching circuit module 6 connect to form closed ring current access with NFC antenna coil.Arrow in Fig. 4 show a kind of faradic possible flow path, can adjust the working frequency of NFC antenna coil by adjusting matching circuit module 6 as a result, for example, adjustable NFC antenna coil working frequency to common 13.56Mhz.Specifically, matching circuit module 6 can be definite value inductance, adjust the working frequency of NFC antenna coil by replacing the definite value inductance of different model.Since the thickness of matching circuit module 6 is more thicker than thermal conductor layer 5, complete machine thickness increases in order to prevent, the lesser component Corresponding matching circuit module 6 of thickness on mainboard 2 can be arranged, it is avoided with the thickness to matching circuit module 6, due to the area very little (usually less than 1mmx2mm) of matching circuit module 6, evacuation is easily achieved.
It should be noted that; the common working frequency of NFC antenna is 13.56Mhz at present; but 13.56Mhz is not the restriction to the working frequency of the application NFC antenna; the working frequency of NFC antenna is also possible to 13.56MHz ± 7kHz; or 13.56MHz ± 678Hz etc.; all working frequencies that can be applied to NFC antenna, all within the scope of protection of this application.
As shown in figure 4, matching circuit module 6 may be disposed on mainboard 2.At this time, it may be necessary to which connecting line is arranged between mainboard 2 and thermal conductor layer 5, matching circuit module 6 is connect with thermal conductor layer 5.Specifically, connecting line one end can be fixedly connected with the matching circuit module 6 on mainboard 2, the other end of connecting line is detachably connected (such as crimping by crimping structure) with thermal conductor layer 5, in order to nonmetallic rear shell 1 opening.
In alternatively possible implementation, as shown in Figure 5, matching circuit module 6 may also set up on the inner surface of nonmetallic rear shell 1, at this time, only thermal conductor layer 5 and matching circuit module 6 need to be connected into loop in nonmetallic rear shell 1, it does not need to connect with mainboard 2, this connection structure is easy to implement and will not influence the unlatching of nonmetallic rear shell 1.
Since NFC antenna is that the magnetic field radiated by coil is coupled, and the distribution in magnetic field has variable density, the magnetic density in usual hub of a spool region is larger, when carrying out short-distance wireless communication using NFC function, since rear cover does not have the cue mark in hub of a spool region, can not reference, therefore user can not learn that the magnetic field of where is close
It spends larger, also just can not accurately use the strongest part in magnetic field.In order to solve the above problem; as shown in Figure 4; since the avoid holes 51 for avoiding camera would generally be offered in thermal conductor layer 5; the a part slotted at this time using avoid holes 51 as thermal conductor layer 5 is specifically also provided with elongated slot 52 in thermal conductor layer 5; first edge of one end perforation thermal conductor layer 5 of elongated slot 52; the other end and avoid holes 51 penetrate through, and the two sides of elongated slot 52 are respectively equipped with a tie point, and two tie points are connect with two interfaces of matching circuit module 6 respectively.Thus can a part by avoid holes 51 as NFC antenna coil, keep the magnetic flux near camera larger, to can be convenient for reference using camera as center when swiping the card when using NFC function, improve recognition speed and precision.
As shown in fig. 6, the NFC antenna coil that thermal conductor layer 5 is formed after slotting can also be closed aerial coil, closed aerial coil makes to form closed ring current access inside thermal conductor layer 5.Arrow in Fig. 6 show a kind of faradic possible flow path, this structure needs the structure by adjusting closed aerial coil to adjust the working frequency of NFC antenna coil, matching connection circuit module 6 is not needed, manufacture craft can be simplified, and it is connectionless between thermal conductor layer 5 and mainboard 2, it will not influence nonmetallic rear shell 1 and open.
In the above-described embodiments, a part equally using avoid holes 51 as NFC antenna coil, specifically, as shown in Figure 6, the avoid holes 51 for avoiding camera are offered in thermal conductor layer 5, offer orthogonal first elongated slot 53 and the second elongated slot 54 in thermal conductor layer 5, and the first elongated slot 53 is close to the first edge 55 of thermal conductor layer 5 setting and parallel with the first edge 55 of thermal conductor layer 5, second elongated slot, 54 one end and the first elongated slot 53 penetrate through, and the other end and avoid holes 51 penetrate through.Thus can a part by avoid holes 51 as NFC antenna coil, keep the magnetic flux near camera larger, to can be convenient for reference using camera as center when swiping the card when using NFC function, improve recognition speed and precision.In addition, this structure can adjust the working frequency of NFC antenna coil by changing the length and width of the first elongated slot 53, achievees the purpose that adjust working frequency by structure change few as far as possible, prevent excessive waste.
In order not to increase complete machine thickness, coupling line ring layer 4 can be below the upper surface of battery 3 in setting, it can also be concordant with the upper surface of battery 3, when coupling line ring layer 4 close to thermal conductor layer 5 surface and battery 3 close to the flush of thermal conductor layer 5 when, it can make coupling line ring layer 4 under the premise of being no more than the thickness range of battery 3 as far as possible far from mainboard 2, so that the heat dissipation to mainboard 2 be avoided to have an impact.
Wherein, there are many implementations of coupling line ring layer 4, such as in scheme shown in Fig. 4, flexible circuit board 41 can be set on the bracket 7 on mainboard 2, coupling coil 42 is formed inside flexible circuit board 41, can also be by LDS (Laser Direct Structuring, laser direct forming) technique or spraying process straight forming coupling coil in the parts of plastics of bracket 7, the scheme of flexible circuit board is at low cost and is easily achieved.
In order to guarantee the good heat radiating of the higher element of heat on mainboard 2, projection of the region that the thermal conductor layer 5 is slotted on the mainboard 2 is staggered with the element for needing to radiate on the mainboard 2, that is, the element for needing to radiate on mainboard 2 can be avoided as far as possible in fluting, thus, it is certifiable need the corresponding rear shell region of element radiated to have heat carrier is thermally conductive, to prevent the region amount of localized heat excessively high.Equally, coupling line ring layer 4 influences the heat dissipation of element for needing to radiate on mainboard 2 in order to prevent, can by coupling line ring layer 4 on mainboard 2 drop shadow spread and mainboard 2 on the element that needs to radiate be staggered, make it have enough heat-dissipating spaces.Thus, it is ensured that the element good heat radiating for needing to radiate on mainboard 2.Wherein, the element for needing to radiate on mainboard 2 can be the higher element of heat on mainboard 2 or have the element of cooling requirements, such as CPU.
Gap between thermal conductor layer 5 and coupling line ring layer 4 is the important parameter for influencing coupling effect, when the gap between thermal conductor layer 5 and coupling line ring layer 4 is at 0.2 millimeter~0.3 millimeter.It may make thermal conductor layer 5 and coupling line ring layer
Coupling effect between 4 is more preferable.
Influence of the vortex on 2 surface of mainboard to antenna magnetic field in order to prevent, can be in coupling line ring layer 4 towards ferrite layer is arranged on the surface of mainboard 2.The magnetic field that the vortex that ferrite layer can prevent 2 inner conductor surface of mainboard from generating weakens coupling line ring layer 4 improves the coupling effect between thermal conductor layer 5 and coupling line ring layer 4 to increase magnetic flux.
Embodiment two,
The embodiment of the present application provides the structural design scheme of another mobile phone, as shown in Figure 7.The mobile phone 100 of the embodiment of the present application, including 1 (not shown) of nonmetallic rear shell and mainboard 2, the inner surface of nonmetallic rear shell 1 are equipped with thermal conductor layer 5, and the fluting of thermal conductor layer 5 forms NFC antenna coil；Mainboard 2 and thermal conductor layer 5 are opposite, and mainboard 2 is equipped with feeding point, and NFC antenna coil is connect with the feeding point on mainboard 2.
Mobile phone provided by the embodiments of the present application, thermal conductor layer 5 is directly connect with the feeding point on mainboard 2, using thermal conductor layer 5 as the radiating element of NFC antenna, the area of thermal conductor layer 5 can meet the needs of NFC antenna is for identification range, and without increasing other devices, complete machine thickness does not change, and the thickness space of complete machine is occupied so as to avoid NFC antenna.
Influence of the vortex on 2 surface of mainboard to antenna magnetic field in order to prevent, can be in thermal conductor layer 5 towards ferrite layer is arranged on the surface of mainboard 2.The magnetic field that the vortex that ferrite layer can prevent 2 inner conductor surface of mainboard from generating weakens thermal conductor layer 5 improves the performance of NFC antenna to increase magnetic flux.
Embodiment three,
As shown in Fig. 2, Fig. 3, Fig. 5, the embodiment of the present application also provides a kind of mobile phones 100, including nonmetallic rear shell 1, mainboard 2, battery 3, FPC and matching circuit module 6, the inner surface of nonmetallic rear shell 1 is equipped with thermal conductor layer 5, and the fluting of thermal conductor layer 5 forms NFC antenna coil；Mainboard 2 and thermal conductor layer 5 are arranged along the thickness direction of mobile phone, and mainboard 2 is equipped with feeding point；Battery 3 and mainboard 2 are arranged along the length direction of mobile phone；Aerial coil is formed in FPC, FPC is set between mainboard 2 and thermal conductor layer 5, and FPC and battery 3 are arranged along the length direction of mobile phone, aerial coil in FPC is connect with the feeding point on mainboard 2, it is capable of forming Space Coupling between aerial coil in FPC and thermal conductor layer 5, the NFC antenna coil of thermal conductor layer 5 is made to generate secondary radiation；Matching circuit module 6 is set on the inner surface of nonmetallic rear shell 1, and NFC antenna coil is open aerial coil, and matching circuit module 6 connect to form closed ring current access with NFC antenna coil.
Mobile phone provided by the embodiments of the present application, the fluting of thermal conductor layer 5 is formd into NFC antenna coil, and Space Coupling is capable of forming between the aerial coil in FPC and thermal conductor layer 5, thermal conductor layer 5 is set to generate secondary radiation, therefore, the radiating element final as NFC antenna of thermal conductor layer 5 is utilized, the area of thermal conductor layer 5 can meet the needs of NFC antenna is for identification range, and the aerial coil in FPC is used only for coupling thermal conductor layer 5, therefore the area of FPC can be done small, FPC is set to correspond to the position setting of mainboard 2 and arrange with the length direction of 3 mobile phone of battery, to be not take up the thickness space of mobile phone, keep mobile phone more frivolous.
Example IV,
As shown in Figure 8, the embodiment of the present application also provides a kind of antenna module, including nonmetallic 1 (not shown) of rear shell and coupling line ring layer 4, the inner surface of nonmetallic rear shell 1 is equipped with thermal conductor layer 5, the fluting of thermal conductor layer 5 forms NFC antenna coil, coupling line ring layer 4 is parallel with thermal conductor layer 5 and interval is arranged, and is capable of forming Space Coupling between coupling line ring layer 4 and thermal conductor layer 5, and thermal conductor layer 5 is made to generate secondary radiation.
The fluting of thermal conductor layer 5 is formd NFC antenna coil, and is capable of forming Space Coupling between coupling line ring layer 4 and thermal conductor layer 5 by antenna module provided by the embodiments of the present application, and thermal conductor layer 5 is made to generate secondary radiation, therefore,
The radiating element final as NFC antenna of thermal conductor layer 5 is utilized, the area of thermal conductor layer 5 can meet the needs of NFC antenna is for identification range, and coupling line ring layer 4 is used only for coupling thermal conductor layer 5, therefore the area of coupling line ring layer 4 can be done small, and coupling line ring layer 4 is made to be not take up thickness space.
In the description of this specification, particular features, structures, materials, or characteristics can be combined in any suitable manner in any one or more of the embodiments or examples.
It is described above; only a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, and anyone skilled in the art is in the technical scope disclosed by the present invention; it can easily think of the change or the replacement, should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (20)
- A kind of terminal characterized by comprisingThe inner surface of nonmetallic rear shell, the nonmetallic rear shell is equipped with thermal conductor layer, and the thermal conductor layer slots to form NFC antenna coil；Mainboard, the mainboard is opposite with the thermal conductor layer, and the mainboard is equipped with feeding point；Battery, the battery and the mainboard are arranged along the direction for being parallel to the thermal conductor layer；Coupling line ring layer, the coupling line ring layer is set between the mainboard and the thermal conductor layer, and it is arranged with the battery along the direction for being parallel to the thermal conductor layer, the coupling line ring layer is connect with the feeding point on the mainboard, it is capable of forming Space Coupling between the coupling line ring layer and the thermal conductor layer, the thermal conductor layer is made to generate secondary radiation.
- Terminal according to claim 1, which is characterized in that the thermal conductor layer is connected with matching circuit module, and the NFC antenna coil is open aerial coil, and the matching circuit module connect to form closed ring current access with the NFC antenna coil.
- Terminal according to claim 2, which is characterized in that the matching circuit module is set on the mainboard.
- Terminal according to claim 2, which is characterized in that the matching circuit module is set on the inner surface of the nonmetallic rear shell.
- The terminal according to any one of claim 2~4, it is characterized in that, the avoid holes for avoiding camera are offered in the thermal conductor layer, elongated slot is offered in the thermal conductor layer, one end of the elongated slot penetrates through the first edge of the thermal conductor layer, the other end and the avoid holes penetrate through, and the two sides of the elongated slot are respectively equipped with a tie point, and two tie points are connect with two interfaces of the matching circuit module respectively.
- Terminal according to claim 1, which is characterized in that the NFC antenna coil is closed aerial coil, and the closed aerial coil makes to form closed ring current access inside the thermal conductor layer.
- Terminal according to claim 6, it is characterized in that, the avoid holes for avoiding camera are offered in the thermal conductor layer, orthogonal first elongated slot and the second elongated slot are offered in the thermal conductor layer, first elongated slot close to the thermal conductor layer the first edge setting and it is parallel with the first edge of the thermal conductor layer, second elongated slot one end and first elongated slot penetrate through, and the other end and the avoid holes penetrate through.
- Terminal according to any one of claims 1 to 7, which is characterized in that the coupling line ring layer is close to the surface of the thermal conductor layer with the battery close to the flush of the thermal conductor layer.
- Terminal described according to claim 1~any one of 8, which is characterized in that the coupling line ring layer includes FPC and the coupling coil that is formed in inside the FPC.
- Terminal described according to claim 1~any one of 9, it is characterized in that, the projection of the region of the thermal conductor layer fluting on the main board is staggered with the element for needing to radiate on the mainboard, and the projection of the coupling line ring layer on the main board is staggered with the element for needing to radiate on the mainboard.
- Terminal described according to claim 1~any one of 10, which is characterized in that the area of the area of the thermal conductor layer and the inner surface of the nonmetallic rear shell is adapted.
- Terminal described according to claim 1~any one of 11, which is characterized in that the gap between the thermal conductor layer and the coupling line ring layer is 0.2 millimeter~0.3 millimeter.
- Terminal described according to claim 1~any one of 12, which is characterized in that the coupling line ring layer direction The surface of the mainboard is equipped with ferrite layer.
- A kind of terminal characterized by comprisingThe inner surface of nonmetallic rear shell, the nonmetallic rear shell is equipped with thermal conductor layer, and the thermal conductor layer slots to form NFC antenna coil；Mainboard, the mainboard is opposite with the thermal conductor layer, and the mainboard is equipped with feeding point, and the NFC antenna coil is connect with the feeding point on the mainboard.
- Terminal according to claim 14, which is characterized in that the thermal conductor layer is equipped with ferrite layer towards the surface of the mainboard.
- A kind of mobile phone characterized by comprisingThe inner surface of nonmetallic rear shell, the nonmetallic rear shell is equipped with thermal conductor layer, and the thermal conductor layer slots to form NFC antenna coil；Mainboard, the mainboard and the thermal conductor layer are arranged along the thickness direction of mobile phone, and the mainboard is equipped with feeding point；Battery, the battery and the mainboard are arranged along the length direction of mobile phone；FPC, aerial coil is formed in the FPC, the FPC is set between the mainboard and the thermal conductor layer, and the FPC and the battery are arranged along the length direction of mobile phone, aerial coil in the FPC is connect with the feeding point on the mainboard, it is capable of forming Space Coupling between aerial coil and the thermal conductor layer in the FPC, the NFC antenna coil of the thermal conductor layer is made to generate secondary radiation；Matching circuit module, the matching circuit module are set on the inner surface of the nonmetallic rear shell, and the NFC antenna coil is open aerial coil, and the matching circuit module connect to form closed ring current access with the NFC antenna coil.
- A kind of antenna module characterized by comprisingThe inner surface of nonmetallic rear shell, the nonmetallic rear shell is equipped with thermal conductor layer, and the thermal conductor layer slots to form NFC antenna coil；Coupling line ring layer, the coupling line ring layer is parallel with the thermal conductor layer and interval is arranged, and is capable of forming Space Coupling between the coupling line ring layer and the thermal conductor layer, and the thermal conductor layer is made to generate secondary radiation.
- Antenna module according to claim 17, it is characterized in that, the thermal conductor layer is connected with matching circuit module, and the NFC antenna coil is open aerial coil, and the matching circuit module connect to form closed ring current access with the NFC antenna coil.
- Antenna module according to claim 18, which is characterized in that the matching circuit module is set on the inner surface of the nonmetallic rear shell.
- Antenna module according to claim 17, which is characterized in that the NFC antenna coil is closed aerial coil, and the closed aerial coil makes to form closed ring current access inside the thermal conductor layer.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/096447 WO2019028678A1 (en) | 2017-08-08 | 2017-08-08 | Antenna assembly and terminal |
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| Publication Number | Publication Date |
|---|---|
| CN110168807A true CN110168807A (en) | 2019-08-23 |
| CN110168807B CN110168807B (en) | 2020-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780082202.7A Active CN110168807B (en) | 2017-08-08 | 2017-08-08 | Antenna assembly and terminal |
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| Country | Link |
|---|---|
| CN (1) | CN110168807B (en) |
| WO (1) | WO2019028678A1 (en) |
Cited By (2)
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|---|---|---|---|---|
| CN112803145A (en) * | 2019-11-14 | 2021-05-14 | 三星电子株式会社 | Electronic device including antenna |
| CN112909475A (en) * | 2021-01-15 | 2021-06-04 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112566440A (en) * | 2019-09-25 | 2021-03-26 | 中兴通讯股份有限公司 | Electronic component and terminal equipment |
| CN111987453B (en) * | 2020-09-17 | 2021-05-25 | 广州郝舜科技有限公司 | Near field communication antenna device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110168807B (en) | 2020-11-06 |
| WO2019028678A1 (en) | 2019-02-14 |
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