CN110534874A - A kind of terminal device antenna assembly and implementation method - Google Patents
A kind of terminal device antenna assembly and implementation method Download PDFInfo
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- CN110534874A CN110534874A CN201810502731.4A CN201810502731A CN110534874A CN 110534874 A CN110534874 A CN 110534874A CN 201810502731 A CN201810502731 A CN 201810502731A CN 110534874 A CN110534874 A CN 110534874A
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- radiator
- terminal device
- metal
- mainboard
- antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/328—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors between a radiating element and ground
-
- 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
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Support Of Aerials (AREA)
- Details Of Aerials (AREA)
Abstract
The invention discloses a kind of terminal device antenna assembly and implementation methods, are related to field of antenna, which comprises mark off the totally-enclosed non-metallic regions for budget metals earth-current on the ground in the metal of terminal device mainboard；Antenna topology unit is arranged in the totally-enclosed non-metallic regions divided；The antenna topology unit obtains operating current, and with being coupled to the metal by the operating current in the radiofrequency signal provided using the terminal device mainboard, using the multistage echo difference suppressor mode of local resonance, realizes wideband impedance match.The embodiment of the present invention solve in the prior art can not under finite size multiple wide-bands while the technical issues of realize work, while greatly improving electromagnetic compatibility characteristic.
Description
Technical field
The present invention relates to field of antenna, in particular to a kind of terminal device antenna assembly and implementation method.
Background technique
Existing mobile radio terminal mostly uses greatly monopole antenna, planar inverted-F antenna (Planar Inverted-F
Antenna, PIFA), the antennas of the types such as loop aerial.Frequency range of the these antenna to covering needed for meeting, physical size
Can be very big, and wherein the bandwidth of single type antenna cannot reach the job requirement of mobile radio terminal communication.Currently, for
The Antenna Design for covering long term evolution (Long Term Evolution, LTE) frequency range, does not require nothing more than the return loss of antenna
And the antenna performances such as gain and efficiency are good, but also require the size of antenna as small as possible.According to Principle of Antenna it is found that tradition
Antenna size need to reach operation wavelength half or a quarter could resonant operational, this for original volume compared with
It is difficult to find suitable space for small mobile radio terminal and places these antenna, so traditional antenna form is not able to satisfy
Requirement of the wireless data transmission to antenna.Therefore, how small volume mobile radio terminal guarantee antenna have miniaturization
And high performance working condition is a problem to be solved.
The prior art gives the antenna design method and data card veneer of a kind of wireless terminal.The antenna design method packet
It includes: marking off the semiclosed region without other metal lines on the data card veneer of wireless terminal；It is walked in the antenna
It is coupled between line and the data card veneer.Also disclose a kind of data card veneer of wireless terminal.Pass through the existing skill
Art realizes the work of wideband while can reduce specific absorption rate (Specific Absorption Rate, SAR) value of antenna
Make bandwidth.The defect of the prior art are as follows:
1. radiation areas are semiclosed region, affected by environment big, metal earth-current is uneven, current path ohmic loss
Greatly, anti-electrostatic discharging (Electro-Static discharge, ESD) effect is poor.
2. radiating antenna Clearance requirement is big, headroom is about 1/4 wavelength of lowest operating frequency, and working band is narrow.
Summary of the invention
A kind of terminal device antenna assembly provided in an embodiment of the present invention and implementation method, solving in the prior art can not be
The problem of multiple wide-bands realize work simultaneously under finite size.
A kind of implementation method of the terminal device antenna assembly provided according to embodiments of the present invention, comprising:
The totally-enclosed non-metallic regions for budget metals earth-current are marked off on the ground in the metal of terminal device mainboard；
Antenna topology unit is arranged in the totally-enclosed non-metallic regions divided；
The antenna topology unit generates operating current in the radiofrequency signal provided using the terminal device mainboard, and
With being coupled to the metal by the operating current, using the multistage echo difference suppressor mode of local resonance, broadband impedance is realized
Matching.
Preferably, the terminal device mainboard has at least two layers of layer printed circuit board, the gold in terminal device mainboard
It is marked off on possession and includes: for the totally-enclosed non-metallic regions of budget metals earth-current
Totally-enclosed non-metallic regions are marked off on the ground in the metal of every layer printed circuit layer of the terminal device mainboard.
Preferably, described to arrange that antenna topology unit includes: in the totally-enclosed non-metallic regions divided
The antenna topology unit is arranged in the totally-enclosed non-metallic regions on the metal ground of at least one layer of layer printed circuit board.
Preferably, the antenna topology unit includes: the first radiation between the terminal device mainboard there are gap
Body, the second radiator for generating the operating current, third radiator, the 4th radiator and lamped element, the day
Line topology unit obtains operating current in the radiofrequency signal provided using the terminal device mainboard, and by the operating current
During being coupled to the metal ground, using the multistage echo difference suppressor mode of local resonance, realize that wideband impedance match includes:
During the antenna topology unit is in local resonant state, by second radiator, first radiation
The equivalent network that body and the 4th radiator are formed generates echo-signal, by the third radiator, the lamped element, institute
With stating metal and the equivalent network of second radiator formation generates reflection signal；
Difference counteracting processing is carried out to the echo-signal and the reflection signal, obtains differential signal, and utilize first
Radiator absorbs the differential signal, to realize wideband impedance match.
Preferably, further includes:
In the upper arrangement of at least one of described first radiator to the 4th radiator and the terminal device mainboard
Between there are the first metal Coupling piece in gap, pass through the institute between the first metal Coupling piece and the terminal device mainboard
Gap is stated, the first metal Coupling piece is coupled with the terminal device mainboard；And/or
There is seam between the non-metallic regions arrangement for not arranging the antenna topology unit and the terminal device mainboard
Second metal Coupling piece of gap will by the gap between the second metal Coupling piece and the terminal device mainboard
The second metal Coupling piece is coupled with the terminal device mainboard.
A kind of terminal device antenna assembly provided according to embodiments of the present invention, comprising:
Metal, it is located on terminal device mainboard, there are the totally-enclosed non-metallic regions for budget metals earth-current；
Antenna topology unit is arranged in the totally-enclosed non-metallic regions, for utilizing the terminal device mainboard
The radiofrequency signal of offer generates operating current, and with being coupled to the metal by the operating current, multistage using local resonance
Echo difference suppressor mode realizes wideband impedance match.
Preferably, the terminal device mainboard has at least two layers of layer printed circuit board, the metal of every layer printed circuit layer
On all have totally-enclosed non-metallic regions.
Preferably, the antenna topology unit is arranged in the totally-enclosed nonmetallic of the metal ground of at least one layer of layer printed circuit board
Region.
Preferably, the antenna topology unit includes: the first radiation between the terminal device mainboard there are gap
Body, the second radiator for generating the operating current, third radiator, the 4th radiator and lamped element, wherein
During the antenna topology unit is in local resonant state, by second radiator, first radiator and described
The equivalent network that 4th radiator is formed generates echo-signal, by the third radiator, the lamped element, the metal
Reflection signal is generated with the equivalent network that second radiator is formed, it is poor to carry out to the echo-signal and the reflection signal
Divide counteracting processing, obtains differential signal, and utilize the first radiator, the differential signal is absorbed, to realize broadband impedance
Match.
Preferably, further includes:
First metal Coupling piece is arranged at least one of described first to fourth radiator, with the terminal
Exist between equipment mainboard and have the gap, for realizing and the end by the gap between the terminal device mainboard
The coupling of end equipment mainboard；And/or
Second metal Coupling piece, is arranged in the non-metallic regions for not arranging the antenna topology unit, and with the end
Exist between end equipment mainboard and have the gap, for by the gap between the terminal device mainboard, realize with it is described
Two secondary couplings of terminal device mainboard.
Technical solution provided in an embodiment of the present invention has the following beneficial effects:
Miniaturization terminal device antenna assembly provided in an embodiment of the present invention is to can satisfy terminal device covering LTE full range
Section PCB printing miniaturization wireless terminal antenna device, be able to solve in the prior art can not under finite size multiple width
The technical issues of frequency range realizes work simultaneously, while greatly improving electromagnetic compatibility characteristic.
Detailed description of the invention
Fig. 1 is the implementation method flow chart of terminal device antenna assembly provided in an embodiment of the present invention；
Fig. 2 is the attachment structure schematic diagram of wireless terminal and antenna assembly provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the antenna assembly for the terminal device that embodiment of the present invention provides；
Fig. 4 is the first terminal device antenna structure view that embodiment of the present invention provides；
Fig. 5 is second of terminal device antenna structure view that embodiment of the present invention provides；
Fig. 6 is the third terminal device antenna structure view that embodiment of the present invention provides；
Fig. 7 is the equivalent circuit diagram for the terminal device that embodiment of the present invention provides；
Fig. 8 is S11 Parameter Map when being applied in wireless terminal antenna that embodiment of the present invention provides；
Fig. 9 be embodiment of the present invention provide be applied to radiation efficiency figure when in wireless terminal antenna.
Specific embodiment
Below in conjunction with attached drawing to a preferred embodiment of the present invention will be described in detail, it should be understood that described below is excellent
Select embodiment only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Fig. 1 is the implementation method flow chart of terminal device antenna assembly provided in an embodiment of the present invention, as shown in Figure 1, step
Suddenly include:
Step S101: the totally-enclosed non-gold for budget metals earth-current is marked off on the ground in the metal of terminal device mainboard
Belong to region.
Step S101 includes: that the terminal device mainboard has at least two layers of layer printed circuit board, in the terminal device master
The metal of every layer printed circuit layer of plate marks off totally-enclosed non-metallic regions on the ground.For example, if terminal device mainboard has
There are top layer and bottom two-tier circuit layer, then marks off totally-enclosed non-metallic areas on the ground in the metal of the terminal device mainboard top layer
Domain, and totally-enclosed non-metallic regions are marked off on the ground in the metal of the terminal device mainboard bottom.If terminal device mainboard
Top layer and bottom between also there is internal layer (at least one layer), side also marks off totally-enclosed non-gold in every layer of metal ground of internal layer
Belong to region.
Step S102: antenna topology unit is arranged in the totally-enclosed non-metallic regions divided.
Step S102 include: in the totally-enclosed non-metallic regions on the metal ground of at least one layer of layer printed circuit board arrangement described in
Antenna topology unit.For example, in the totally-enclosed non-metallic regions on top-level metallic ground and/or the totally-enclosed non-gold on underlying metal ground
Belong in region and/or arrange in the totally-enclosed non-metallic regions on inner layer metal ground the antenna topology unit.
The antenna topology unit include: between the terminal device mainboard there are first radiator in gap, be used for
Generate the second radiator, third radiator, the 4th radiator and the lamped element of the operating current.
Step S103: the antenna topology unit generates work in the radiofrequency signal provided using the terminal device mainboard
Make electric current, and with being coupled to the metal by the operating current, using the multistage echo difference suppressor mode of local resonance, realizes
Wideband impedance match.
Step S103 include: during the antenna topology unit is in local resonant state, by second radiator,
The equivalent network that first radiator and the 4th radiator are formed generates echo-signal, by the third radiator, institute
With stating lamped element, the metal and the equivalent network of second radiator formation generates reflection signal；The echo is believed
Number and the reflection signal carry out difference counteracting processing, obtain differential signal, and utilize the first radiator, absorb the difference and believe
Number, to realize wideband impedance match.
The method also includes: in the upper arrangement of at least one of described first radiator to the 4th radiator and institute
The first metal Coupling piece between terminal device mainboard there are gap is stated, is set by the first metal Coupling piece with the terminal
The gap between standby mainboard, the first metal Coupling piece is coupled with the terminal device mainboard；And/or not
Arrange that there are second metals in gap between the non-metallic regions arrangement of the antenna topology unit and the terminal device mainboard
Coupling piece, by the gap between the second metal Coupling piece and the terminal device mainboard, by second metal
Coupling piece is coupled with the terminal device mainboard.
The radiation areas of the terminal antenna of the embodiment of the present invention are totally-enclosed region, affected by environment small, metal earth-current
Balanced balanced current is presented, radiation characteristic is good." O " Shape closed circuit ratio " C " shape loop current path ohmage is small, and small, spoke is lost
It penetrates high-efficient.The anti-ESD of full-closed structure (static discharge) works well.
The radiating antenna headroom of the embodiment of the present invention is small, and headroom is about 0.05 λ, 0.025 λ (lowest operating frequency 698MHz),
Far smaller than 1/4 wavelength meets LTE698-960MHz&1710-2690MHz working band.
The embodiment of the invention also provides a kind of terminal device antenna assemblies, comprising:
Metal, it is located on terminal device mainboard, there are the totally-enclosed non-metallic regions for budget metals earth-current.Institute
Terminal device mainboard is stated at least two layers of layer printed circuit board, the metal of every layer printed circuit layer all has totally-enclosed non-gold on the ground
Belong to region.For example, metal specifically include positioned at the terminal device mainboard top layer layer printed circuit board top-level metallic and position
In the underlying metal of the terminal device mainboard base printed circuit layer, the top-level metallic and the underlying metal it is equal
With totally-enclosed non-metallic regions.If the terminal device mainboard has two layers or more layer printed circuit board, i.e. top layer and bottom
Between there are internal layer (its have at least one layer of layer printed circuit board), then further include to metal the interior of every layer printed circuit layer of internal layer
Layer metal.
Antenna topology unit is arranged in the totally-enclosed non-metallic regions, can specifically be arranged in the top-level metallic
The totally-enclosed non-metallic regions on ground and/or the totally-enclosed non-metallic regions on underlying metal ground, for utilizing the terminal
The radiofrequency signal that equipment mainboard provides generates operating current, and with being coupled to the metal by the operating current, utilizes local
The multistage echo difference suppressor mode of resonance realizes wideband impedance match.The antenna topology unit is arranged at least one layer of printing
The totally-enclosed non-metallic regions on the metal ground of circuit layer, such as the totally-enclosed non-metallic regions on top-level metallic ground are set, or
Totally-enclosed non-metallic regions and the totally-enclosed non-metallic regions on inner layer metal ground etc. on top-level metallic ground are set.Wherein, described
Antenna topology unit includes: between the terminal device mainboard there are first radiator in gap, for generating the work
The second radiator, third radiator, the 4th radiator and the lamped element of electric current, wherein at the antenna topology unit
During local resonant state, formed by second radiator, first radiator and the 4th radiator equivalent
Network generate echo-signal, by the third radiator, the lamped element, the metal and second radiator formed
Equivalent network generate reflection signal, to the echo-signal and the reflection signal progress difference counteracting processing, obtain difference
Signal, and the first radiator is utilized, the differential signal is absorbed, to realize wideband impedance match.
Further, further includes:
First metal Coupling piece is arranged at least one of described first to fourth radiator, with the terminal
Exist between equipment mainboard and have the gap, for realizing and the end by the gap between the terminal device mainboard
The coupling of end equipment mainboard；And/or
Second metal Coupling piece, is arranged in the non-metallic regions for not arranging the antenna topology unit, and with the end
Exist between end equipment mainboard and have the gap, for by the gap between the terminal device mainboard, realize with it is described
Two secondary couplings of terminal device mainboard.
The application of the antenna assembly of the embodiment of the present invention is set forth below, the antenna assembly of the embodiment of the present invention is answered
For mainboard for terminal wireless end product.
Fig. 2 is the attachment structure schematic diagram of wireless terminal and antenna assembly provided in an embodiment of the present invention, and Fig. 3 is the present invention
The structural schematic diagram of the antenna assembly for the terminal device that embodiment provides, as shown in Figures 2 and 3.
The antenna assembly of the terminal device is used for notebook, PC machine, on the wireless terminal product of the digital products such as PAD.Nothing
The interface of line terminal can be USB interface, pcmcia interface (PC memory card interface), Express interface or other electronic equipments
Interface.
Wireless terminal includes mainboard 12 and USB interface 3, passes through the USB interface 3 and notebook of end, PC machine etc. when use
Equipment is connected.The mainboard 12 of wireless terminal product is bilayer copper clad dielectric-slab, and material is nonmetallic materials, wireless terminal product
There are a piece of top layer non-metallic regions 4 and bottom non-metallic regions 5 to leave antenna topology unit 9 among mainboard.It is removed on mainboard non-
The remaining region of metallic region is for metal.And the metal of wireless terminal product top layer and bottom will altogether.Antenna area
Size be 11mm × 21mm × 2mm.
Embodiment 1
Fig. 3 is the structural schematic diagram of the antenna assembly for the terminal device that embodiment of the present invention provides, as shown in figure 3, packet
With including top-level metallic 1, it 1 is a flat surface to top-level metallic, positioned at the front of terminal device mainboard 12.Underlying metal 2 be located at master
The bottom surface of plate 12.The material of antenna terminal equipment mainboard 12 is nonmetallic materials, is wrapped in the metallic region of terminal device mainboard 12
Layer containing multilayer printed circuit.USB interface 3 is connected with other digital equipments.
1 top layer non-metallic regions 4 and bottom are golden with surrounding the top-level metallic of terminal device mainboard 12 for antenna topology unit 9
The bottom non-metallic regions 5 in possession 2 are laid with.Wherein top layer non-metallic regions 4 and bottom non-metallic regions 5 can be rectangular, circle
Any regulars such as shape, diamond shape, trapezoidal, triangle or irregular shape, it is not limited to the present embodiment square shown in Fig. 2
Shape, and the shape of top layer non-metallic regions 4 and bottom non-metallic regions 5 is not necessarily identical.The feed of antenna topology unit 9
Port 11 is connected with the RF signal output mouth that terminal device mainboard provides, the ground of the feed port 11 of antenna topology unit 9
It is connected with the metal of terminal device mainboard.
Fig. 4 is the first terminal device antenna structure view that embodiment of the present invention provides, as shown in figure 4, antenna
Topology unit 9 includes: the first radiator of top layer 91, the second radiator of top layer 92, top layer third radiator 93, the radiation of top layer the 4th
Body 94, the first lamped element 7, the second lamped element 8, third lamped element 10 and the first metallic walls 6.Wherein top layer first radiates
Body 91, the second radiator of top layer 92, top layer third radiator 93 and the 4th radiator 94 of top layer can be but be not limited to it is rectangular,
Any regulars such as circle, diamond shape, trapezoidal, triangle perhaps irregular shape plane distribution using printing or welding side
Formula is set to the non-metallic regions.In the present embodiment, the first radiator of top layer 91, the second radiator of top layer 92 and top layer the 4th
Radiator 94 is all made of rectangular radiation patch, and top layer third radiator 93 uses one section of inductance folding line shown in Fig. 2.Top layer
Third radiator 93 is of coupled connections by the 4th radiator 94 of top layer and the formation of the first radiator of top layer 91.Top layer third radiator
93 are connected by third lamped element 10 with short-circuit minor matters 95, and are passed through short circuit minor matters 95 and with top-level metallic 1 be connected.First gold medal
Belong to wall 6 and with top-level metallic 1 is connected by the first lamped element and the second lamped element.Wherein the first lamped element 7, second collects
Total element 8 and third lamped element 10 can be one kind or combination of the devices such as capacitor, inductance, resistance, and adjust the lamped element
Parameter and distributing position, can further adjust the resonance characteristic of antenna.The 4th radiator 94 of top layer with top-level metallic 1 it
Between there are gaps.The first radiator of top layer 91, the second radiator of top layer 92, top layer third radiator 93, the 4th radiator of top layer
94, the first metallic walls 6 are all made of metal material.
The antenna assembly of terminal device based on the present embodiment described above, during the launch process, terminal device mainboard
On radiofrequency signal top layer antenna topology unit 9 is fed by feed port 11, so that antenna topology unit 9 is evoked work electricity
Stream, the operating current with being coupled to top-level metallic 1 and underlying metal in 2, wherein antenna topology unit 9 is equivalent to a resonance
Circuit, then by short-circuit minor matters with flowing into top-level metallic 1 and underlying metal 2, and then form a complete radiation resonance electricity
Road.Specifically, during the launch process, the radiofrequency signal on terminal device mainboard 12 is fed into top layer second from feed port 11
Radiator 92, so that the second radiator of top layer 92 has motivated electric current, a part of the operating current passes through the first radiator of top layer
91 enter in the 4th radiators 94 of top layer and top layer third radiator 93, using third lamped element 10 and short-circuit minor matters 95 into
Enter the metal to mainboard.Another part electric current by the first radiator of top layer 91 and top-level metallic slot-coupled between 1
To the metal of mainboard, current loop is formed.
Fig. 7 is the equivalent circuit diagram for the terminal device that embodiment of the present invention provides, as shown in Figure 7.Top layer second radiates
Body 92 is equivalent to the first distributed inductance Lse, and the first radiator of top layer is equivalent to radiation resistance Rse, the first radiator of top layer and top
The 4th radiator of layer generates the first coupled capacitor Cse.Top layer third radiator is equivalent at the second distributed inductance Lsh.Top layer second
The second coupled capacitor Csh, and radiation admittance Gr are generated to radiator and top-level metallic between 1, while third lamped element generates
Lumped capacity C1.The lower RF energy of frequency enters from feed port 11 by the first distributed inductance Lse and the first coupled capacitor
Network composed by Cse generate echo-signal with by the second distributed inductance Lsh, the second coupled capacitor Csh and lumped capacity C1
The reflection signal that composed network generates has the difference of reverse phase, carries out multi-difference cancellation, thus prevent echo-signal into
Enter feed port 11.The differential signal that part can not be offset is equivalent to radiate during multiple reflections via the first radiator
Resistance Rse and radiation admittance Gr absorb, and then further increase frequency bandwidth.
When realization, the main appropriate size for adjusting Lse, Cse, Lsh, Csh and C1, so that it may control entire antenna assembly
Local resonant state.When realization, pass through the first radiator 91 in optimization antenna device arrangement, the second radiator 92, third spoke
Beam 93, the shape and size of the 4th radiator 94, between the radiator of optimization, coupling slot between radiator and data card mainboard
The size of gap, optimizes the parameter and distributing position of lamped element, the resonance and matching status of adjustable antenna assembly, and most
Reach the requirement that target bandwidth is completely covered eventually.
Embodiment 2
Fig. 5 is second of terminal device antenna structure view that embodiment of the present invention provides, as shown in figure 5, this reality
Apply example difference from example 1 is that: on antenna top layer third radiator 93 be arranged metal Coupling piece 13, metal Coupling
Nonmetal medium or air dielectric between printing layer is used to be coupled between piece 13 and antenna radiator.Metal Coupling piece
Exist between 13 and data card mainboard 12 and have the gap, by being carried out between the gap metal Coupling piece 13 and data card mainboard 12
Coupling, to realize two secondary couplings between antenna radiator and data card mainboard 12.
As shown in figure 3, antenna topology unit 9 around terminal device mainboard 12 top-level metallic 1 top layer non-metallic areas
Domain 4 and underlying metal 2 bottom non-metallic regions 5 be laid with.Wherein top layer non-metallic regions 4 and bottom non-metallic regions 5 can
Think any regulars such as rectangular, round, diamond shape, trapezoidal, triangle or irregular shape, it is not limited to the present embodiment figure
Rectangle shown in 4, and the shape of top layer non-metallic regions 4 and bottom non-metallic regions 5 is not necessarily identical.Antenna topology list
The feed port 11 of member 9 is connected with the RF signal output mouth that terminal device mainboard provides, the feed end of antenna topology unit 9
The ground of mouth 11 is connected with the metal of terminal device mainboard.
As shown in figure 5, antenna topology unit 9 includes: the first radiator of top layer 91, the second radiator of top layer 92, top layer
Three radiators 93, the 4th radiator 94 of top layer, metal radiation patch 13, the first lamped element 7, the second lamped element 8, third collection
Total element 10 and the first metallic walls 6.Wherein the first radiator of top layer 91, the second radiator of top layer 92, top layer third radiator 93
It can be with the 4th radiator 94 of top layer but be not limited to any regulars such as rectangular, round, diamond shape, trapezoidal, triangle or not
The shape plane distribution of rule is set to the non-metallic regions by the way of printing or welding.In the present embodiment, top layer
First radiator 91, the second radiator of top layer 92 and the 4th radiator 94 of top layer are all made of rectangular radiation patch, top layer third spoke
Beam 93 uses one section of inductance folding line shown in Fig. 2.Wherein, metal radiation patch 13 can be but the side of being not limited to
Any regulars such as shape, circle, diamond shape, trapezoidal, triangle or irregular shape, in the present embodiment, metal radiation patch
13 use rectangular metal sheet.And metal Coupling piece 13 can be not limited to all or part of patch of top layer antenna radiator
Patch only is carried out to top layer third radiator 93 in the present embodiment.Top layer third radiator 93 by the 4th radiator 94 of top layer with
The formation of the first radiator of top layer 91 is of coupled connections, and top layer third radiator 93 passes through third lamped element 10 and 95 phase of short-circuit minor matters
Even, and by short-circuit minor matters 95 with top-level metallic 1 it is connected.It can be between top layer third radiator 93 and metal radiation patch 13
It is completely insulated, or in place conductive connection can be realized by increasing one or more conducting connection point.First gold medal
Belong to wall 6 and with top-level metallic 1 is connected by the first lamped element and the second lamped element.Wherein the first lamped element 7, second collects
Total element 8 and third lamped element 10 can be one kind or combination of the devices such as capacitor, inductance, resistance, and adjust the lamped element
Parameter and distributing position, can further adjust the resonance characteristic of antenna.The 4th radiator 94 of top layer with top-level metallic 1 it
Between there are gaps.The first radiator of top layer 91, the second radiator of top layer 92, top layer third radiator 93, the 4th radiator of top layer
94, metal radiation patch 13 and the first metallic walls 6 are all made of metal material.
The antenna assembly of terminal device based on present invention as described above, during the launch process, terminal device mainboard 12
On radiofrequency signal be fed into the second radiator of top layer 92 from feed port 11 so that the second radiator of top layer 92 excitation electrification
A part of stream, the operating current enters the 4th radiator 94 of top layer and top layer third radiator by the first radiator of top layer 91
In 93, with entering the metal of mainboard using third lamped element 10 and short-circuit minor matters 95.Another part electric current passes through top layer
First radiator 91 and top-level metallic slot-coupled between 1 to the metal of mainboard, form current loop.Meanwhile top layer
Gap was sealed between third radiator 93 and metal Coupling piece 13 and data card mainboard 12 and generates repeatedly coupling, to generate more
A resonance point has widened the working band of antenna.
When realization, pass through the first radiator 91 in optimization antenna device arrangement, the second radiator 92, third radiator
93, the shape and size of the 4th radiator 94 and metal radiation piece 13, between the radiator of optimization, radiator and data card mainboard
Between, between metal radiation body and data card mainboard, the size in gap is coupled between metal spoke radiation fin and antenna radiator, it is excellent
Change the parameter and distributing position of lamped element, the resonance and matching status of adjustable antenna assembly, and is finally reached completely
The requirement of coverage goal bandwidth.
Embodiment 3
Fig. 6 is the third terminal device antenna structure view that embodiment of the present invention provides, as shown in fig. 6, this reality
Apply example difference from example 1 is that: in antenna bottom non-metallic regions 5 be arranged metal Coupling piece 14, metal Coupling
Piece 14 is set to the non-metallic regions by the way of printing or welding.It is deposited between metal Coupling piece 14 and data card mainboard 12
It is having the gap, by being coupled between the gap metal Coupling piece 14 and data card mainboard 12, to realize aerial radiation
Two secondary couplings between body and data card mainboard 12.
As shown in figure 3, antenna topology unit 9 around terminal device mainboard 12 top-level metallic 1 top layer non-metallic areas
Domain 4 and underlying metal 2 bottom non-metallic regions 5 be laid with.Wherein top layer non-metallic regions 4 and bottom non-metallic regions 5 can
Think any regulars such as rectangular, round, diamond shape, trapezoidal, triangle or irregular shape, it is not limited to the present embodiment figure
Rectangle shown in 2, and the shape of top layer non-metallic regions 4 and bottom non-metallic regions 5 is not necessarily identical.Antenna topology list
The feed port 11 of member 9 is connected with the RF signal output mouth that terminal device mainboard provides, the feed end of antenna topology unit 9
The ground of mouth 11 is connected with the metal of terminal device mainboard.
As shown in fig. 6, antenna topology unit 9 includes: the first radiator of top layer 91, the second radiator of top layer 92, top layer
Three radiators 93, the 4th radiator 94 of top layer, metal radiation patch 14, the first lamped element 7, the second lamped element 8, third collection
Total element 10 and the first metallic walls 6.Wherein the first radiator of top layer 91, the second radiator of top layer 92, top layer third radiator 93
It can be with the 4th radiator 94 of top layer but be not limited to any regulars such as rectangular, round, diamond shape, trapezoidal, triangle or not
The shape plane distribution of rule is set to the non-metallic regions by the way of printing or welding.In the present embodiment, top layer
First radiator 91, the second radiator of top layer 92 and the 4th radiator 94 of top layer are all made of rectangular radiation patch, top layer third spoke
Beam 93 uses one section of inductance folding line shown in Fig. 2.Wherein, metal radiation patch 14 can be but the side of being not limited to
Any regulars such as shape, circle, diamond shape, trapezoidal, triangle or irregular shape, in the present embodiment, metal radiation patch
14 are printed on bottom non-metallic areas 5 using rectangular metal coupling piece, using between printing layer between top layer antenna radiator
Nonmetal medium coupled, and patch can be carried out for all or part of view field of top layer antenna radiator, not office
Limit only carries out patch to the view field of top layer third radiator 93 in this present embodiment.Top layer third radiator 93 passes through top layer
4th radiator 94 is of coupled connections with the formation of the first radiator of top layer 91, and top layer third radiator 93 passes through third lamped element 10
It is connected with short-circuit minor matters 95, and with top-level metallic 1 is connected by short-circuit minor matters 95.Top layer third radiator 93 and metal radiation
Can be completely insulated between patch 14, or in place can be led by increasing the realization of one or more conducting connection point
Electrical connection.First metallic walls 6 with top-level metallic 1 are connected by the first lamped element and the second lamped element.Wherein the first collection
Total element 7, the second lamped element 8 and third lamped element 10 can be one kind or combination of the devices such as capacitor, inductance, resistance, and
The parameter and distributing position of the lamped element are adjusted, the resonance characteristic of antenna can be further adjusted.The 4th radiator 94 of top layer
With top-level metallic there are gaps between 1.The first radiator of top layer 91, the second radiator of top layer 92, top layer third radiator 93,
The 4th radiator 94 of top layer, metal radiation patch 14 and the first metallic walls 6 are all made of metal material.
The antenna assembly of terminal device based on present invention as described above, during the launch process, terminal device mainboard 12
On radiofrequency signal be fed into the second radiator of top layer 92 from feed port 11 so that the second radiator of top layer 92 excitation electrification
A part of stream, the operating current enters the 4th radiator 94 of top layer and top layer third radiator by the first radiator of top layer 91
In 93, with entering the metal of mainboard using third lamped element 10 and short-circuit minor matters 95.Another part electric current passes through top layer
First radiator 91 and top-level metallic slot-coupled between 1 to the metal of mainboard, form current loop.Meanwhile top layer
Gap was sealed between third radiator 93 and metal Coupling piece 14 and data card mainboard 12 and generates repeatedly coupling, to generate more
A resonance point has widened the working band of antenna,
When realization, pass through the first radiator 91 in optimization antenna device arrangement, the second radiator 92, third radiator
93, the shape and size of the 4th radiator 94 and metal radiation piece 14, between the radiator of optimization, radiator and data card mainboard
Between, between metal radiation body and data card mainboard, the size in gap is coupled between metal spoke radiation fin and antenna radiator, it is excellent
Change the parameter and distributing position of lamped element, the resonance and matching status of adjustable antenna assembly, and is finally reached completely
The requirement of coverage goal bandwidth.
In conclusion each embodiment of the present invention is on data card by opening one without metallic region, this without metal area
Only comprising just like design elements such as antenna radiator, metal Coupling piece and gaps in domain.By optimizing the shape without metallic region
Shape and this without the design element in metallic region, it is final to realize the requirement that target frequency bands are completely covered.
The shape of antenna radiation unit described in the embodiment of the present invention is not limited to the shape used in the present embodiment, and spoke
The size of patch is penetrated, the size in gap is not limited to size employed in the embodiment of the present invention between radiation patch.
Shape described in the embodiment of the present invention without metallic region can be any regular or irregular shape, and unlimited
Shape employed in the embodiment of the present invention, mainboard top layer without metallic region and shape of the mainboard bottom without metallic region
It does not need identical.
Resonant network described in the embodiment of the present invention can be formed using one in inductance and/or capacitor, alternatively, several
Several inductance, capacitor string and/or combination simultaneously.
The frequency range that the present invention is not limited to work in embodiments of the present invention can adjust day according to working frequency range demand
The size of line, to meet the requirement of working band.
Fig. 8 is S11 Parameter Map when being applied in wireless terminal antenna that embodiment of the present invention provides, and antenna assembly exists
Required LTE frequency range 698MHz~960MHz&1710MHz~2690MHz is covered, the high performance requirement of antenna is met.
Fig. 9 be embodiment of the present invention provide be applied to radiation efficiency figure when in wireless terminal antenna, antenna assembly exists
The radiation efficiency of low frequency be greater than 60%, high band antenna radiation efficiency be greater than 60%.As can be seen that terminal antenna dress
Set and cover required LTE frequency range 698MHz~960MHz&1710MHz~2690MHz, thus have the characteristics that it is efficient, it is full
The sufficient high performance requirement of antenna.
In conclusion the embodiment of the present invention has following technical effect that
1. realizing the totally-enclosed region in radiation areas, budget metals earth-current by metal surrounding edge enclosed construction；
2. " O " Shape closed circuit is realized, than " C " shape loop current path ohmage by metal surrounding edge enclosed construction
Small, loss is small, and radiation efficiency is high, and anti-ESD works well；
3. the wideband impedance match minimized under high reactance is realized by the multistage echo difference suppressing method of local resonance,
It is small to reduce antenna headroom, headroom is about the λ of 0.05 λ × 0.025 (lowest operating frequency 698MHz), far smaller than 1/4 wavelength
It is required that while covering LTE698-960,1710-2690 wide-band.
Although describing the invention in detail above, but the invention is not restricted to this, those skilled in the art of the present technique
It can be carry out various modifications with principle according to the present invention.Therefore, all to be modified according to made by the principle of the invention, all it should be understood as
Fall into protection scope of the present invention.
Claims (10)
1. a kind of implementation method of terminal device antenna assembly characterized by comprising
The totally-enclosed non-metallic regions for budget metals earth-current are marked off on the ground in the metal of terminal device mainboard；
Antenna topology unit is arranged in the totally-enclosed non-metallic regions divided；
The antenna topology unit generates operating current in the radiofrequency signal provided using the terminal device mainboard, and by institute
It states operating current with being coupled to the metal, using the multistage echo difference suppressor mode of local resonance, realizes wideband impedance match.
2. the method according to claim 1, wherein the terminal device mainboard has at least two layer printed circuits
Layer, the metal in terminal device mainboard mark off the totally-enclosed non-metallic regions packet for budget metals earth-current on the ground
It includes:
Totally-enclosed non-metallic regions are marked off on the ground in the metal of every layer printed circuit layer of the terminal device mainboard.
3. according to the method described in claim 2, it is characterized in that, described arrange in the totally-enclosed non-metallic regions divided
Antenna topology unit includes:
The antenna topology unit is arranged in the totally-enclosed non-metallic regions on the metal ground of at least one layer of layer printed circuit board.
4. method according to claim 1 to 3, which is characterized in that the antenna topology unit includes: and institute
State the second radiator between terminal device mainboard there are first radiator in gap, for generating the operating current, third
Radiator, the 4th radiator and lamped element, the antenna topology unit are penetrated what is provided using the terminal device mainboard
Frequency signal obtains operating current, and with being coupled to the metal by the operating current, utilizes the multistage echo difference of local resonance
Suppressor mode realizes that wideband impedance match includes:
During the antenna topology unit is in local resonant state, by second radiator, first radiator and
The equivalent network that 4th radiator is formed generates echo-signal, by the third radiator, the lamped element, the gold
The equivalent network that possession and second radiator are formed generates reflection signal；
Difference counteracting processing is carried out to the echo-signal and the reflection signal, obtains differential signal, and utilize the first radiation
Body absorbs the differential signal, to realize wideband impedance match.
5. according to the method described in claim 4, it is characterized by further comprising:
Between the upper arrangement of at least one of described first radiator to the 4th radiator and the terminal device mainboard
There are the first metal Coupling pieces in gap, pass through the seam between the first metal Coupling piece and the terminal device mainboard
Gap couples the first metal Coupling piece with the terminal device mainboard；And/or
There are gaps between the non-metallic regions arrangement for not arranging the antenna topology unit and the terminal device mainboard
Second metal Coupling piece will be described by the gap between the second metal Coupling piece and the terminal device mainboard
Second metal Coupling piece is coupled with the terminal device mainboard.
6. a kind of terminal device antenna assembly characterized by comprising
Metal, it is located on terminal device mainboard, there are the totally-enclosed non-metallic regions for budget metals earth-current；
Antenna topology unit is arranged in the totally-enclosed non-metallic regions, for providing using the terminal device mainboard
Radiofrequency signal, generate operating current, and with being coupled to the metal by the operating current, utilize the multistage echo of local resonance
Difference suppressor mode realizes wideband impedance match.
7. device according to claim 6, which is characterized in that the terminal device mainboard has at least two layer printed circuits
The metal of layer, every layer printed circuit layer all has totally-enclosed non-metallic regions on the ground.
8. device according to claim 7, which is characterized in that the antenna topology unit is arranged at least one layer of printing electricity
The totally-enclosed non-metallic regions on the metal ground of road floor.
9. device according to claim 6, which is characterized in that the antenna topology unit includes: and the terminal device
The second radiator, third radiator, the 4th between mainboard there are first radiator in gap, for generating the operating current
Radiator and lamped element, wherein during the antenna topology unit is in local resonant state, by second spoke
The equivalent network that beam, first radiator and the 4th radiator are formed generates echo-signal, is radiated by the third
Body, the lamped element, the metal and second radiator formed equivalent network generate reflection signal, to described time
Wave signal and the reflection signal carry out difference counteracting processing, obtain differential signal, and utilize the first radiator, absorb the difference
Sub-signal, to realize wideband impedance match.
10. device according to claim 9, which is characterized in that further include:
First metal Coupling piece is arranged at least one of described first to fourth radiator, with the terminal device
Exist between mainboard and have the gap, for by the gap between the terminal device mainboard, realization to be set with the terminal
The coupling of standby mainboard；And/or
Second metal Coupling piece is arranged in the non-metallic regions for not arranging the antenna topology unit, and sets with the terminal
Exist between standby mainboard and have the gap, for realizing and the terminal by the gap between the terminal device mainboard
Two secondary couplings of equipment mainboard.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810502731.4A CN110534874B (en) | 2018-05-23 | 2018-05-23 | Terminal equipment antenna device and implementation method |
| PCT/CN2019/087992 WO2019223727A1 (en) | 2018-05-23 | 2019-05-22 | Terminal device antenna apparatus and implementation method |
| EP19806600.3A EP3799206A4 (en) | 2018-05-23 | 2019-05-22 | Terminal device antenna apparatus and implementation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810502731.4A CN110534874B (en) | 2018-05-23 | 2018-05-23 | Terminal equipment antenna device and implementation method |
Publications (2)
| Publication Number | Publication Date |
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| CN110534874A true CN110534874A (en) | 2019-12-03 |
| CN110534874B CN110534874B (en) | 2022-02-25 |
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|---|---|---|---|
| CN201810502731.4A Active CN110534874B (en) | 2018-05-23 | 2018-05-23 | Terminal equipment antenna device and implementation method |
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| Country | Link |
|---|---|
| EP (1) | EP3799206A4 (en) |
| CN (1) | CN110534874B (en) |
| WO (1) | WO2019223727A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2019223727A1 (en) | 2019-11-28 |
| EP3799206A1 (en) | 2021-03-31 |
| EP3799206A4 (en) | 2021-08-04 |
| CN110534874B (en) | 2022-02-25 |
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