CN108417970A - Multifrequency built-in aerial and wireless terminal - Google Patents
Multifrequency built-in aerial and wireless terminal Download PDFInfo
- Publication number
- CN108417970A CN108417970A CN201810173100.2A CN201810173100A CN108417970A CN 108417970 A CN108417970 A CN 108417970A CN 201810173100 A CN201810173100 A CN 201810173100A CN 108417970 A CN108417970 A CN 108417970A
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- China
- Prior art keywords
- radiation arm
- aerial
- arm
- multifrequency
- interior
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—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
- H01Q1/08—Means for collapsing antennas or parts thereof
- H01Q1/085—Flexible aerials; Whip aerials with a resilient base
-
- 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
-
- 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
- H01Q5/10—Resonant antennas
-
- 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
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
-
- 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
Abstract
The present invention discloses a kind of multifrequency built-in aerial and wireless terminal, the multifrequency built-in aerial include：Multifrequency built-in aerial, including：Circuit board, the circuit board are equipped with antenna feed point；And aerial radiation arm, one end are electrically connected with the antenna feed point, the aerial radiation arm folds cabling and forms low frequency cell, and the other end of the aerial radiation arm forms the first high-frequency resonant unit with the part adjacent thereto aerial radiation arm self coupling.Technical solution of the present invention realizes the low frequency and high-frequency design of antenna in the case where meeting the smaller precondition of spatial volume, has multiband, efficient advantageous effect.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly to a kind of multifrequency built-in aerial and wireless terminal.
Background technology
Currently, the volume of wireless device is smaller and smaller, built-in antenna space is smaller and smaller, and conventional antenna form is general
For inverted L shape and inverted F shaped antenna, in a limited space in multiband difficult to realize effect, and the efficiency of antenna is relatively low.
Therefore, there is an urgent need for design in a smaller space it is a kind of miniaturization, efficientibility can multiband aerial, to meet nothing
The growth requirement of line equipment.
Invention content
The main object of the present invention is to propose a kind of multifrequency built-in aerial, it is intended to reduce the volume of antenna, while realize day
Line has multiband, efficient effect.
To achieve the above object, multifrequency built-in aerial proposed by the present invention, including：
Circuit board, the circuit board are equipped with antenna feed point；And
Aerial radiation arm, one end are electrically connected with the antenna feed point, and the aerial radiation arm folds cabling and formed
Low frequency cell, the other end of the aerial radiation arm form the first high frequency with the part adjacent thereto aerial radiation arm self coupling
Resonant element.
Preferably, the aerial radiation arm includes external radiation arm and the interior radiation arm that one end from external radiation arm extends, institute
External radiation arm section is stated around the interior radiation arm setting, and the other end of the external radiation arm is connected to the antenna feed
Point；
The external radiation arm and the interior radiation arm contact to form the low frequency cell；The external radiation arm and the interior spoke
Arm is penetrated to couple to form the first high-frequency resonant unit.
Preferably, the external radiation arm includes sequentially connected first radiation arm, the second radiation arm, third radiation arm and
Four radiation arms, the interior radiation arm are connect with the 4th radiation arm, and first radiation arm and the third radiation arm are along institute
The length direction for stating interior radiation arm extends, and second radiation arm and first radiation arm are along the width side of the interior radiation arm
To extension；
Between the interior radiation arm is in respectively with first radiation arm, second radiation arm and the third radiation arm
Every setting, the first high-frequency resonant unit is formed with self coupling.
Preferably, length direction of the spacing between the interior radiation arm and first radiation arm along the interior radiation arm
In gradually increasing or be gradually reduced setting；And/or
Spacing between the interior radiation arm and the third radiation arm along the interior radiation arm length direction in gradual
Increase or be gradually reduced setting.
Preferably, in first radiation arm, second radiation arm, the third radiation arm and the 4th radiation arm
One or more be extended along curve-like or polyline shaped.
Preferably, the interstice coverage between the interior radiation arm and first radiation arm is 0.2 millimeter to 5 millimeters；Institute
It is 0.2 millimeter to 5 millimeters to state the interstice coverage between interior radiation arm and second radiation arm；The interior radiation arm and described the
Interstice coverage between three radiation arms is 0.5 millimeter to 8 millimeters.
Preferably, the 4th radiation arm is also extended with coupling arm over the ground, and the circuit board forms ground level, the comparison
There is gap between coupling arm and the ground level, the second high-frequency resonant unit is formed with coupling.
Preferably, the interstice coverage between the coupling arm over the ground and the ground level is 0.5 millimeter to 10 millimeters.
Preferably, the aerial radiation arm is formed by FPC winding displacements.
The present invention also proposes a kind of wireless terminal, including shell and multifrequency built-in aerial, the multifrequency built-in aerial installation
In in the shell, the multifrequency built-in aerial includes：
Circuit board, the circuit board are equipped with antenna feed point；And
Aerial radiation arm, one end are electrically connected with the antenna feed point, and the aerial radiation arm folds cabling and formed
Low frequency cell, the other end of the aerial radiation arm form the first high frequency with the part adjacent thereto aerial radiation arm self coupling
Resonant element.
By using aerial radiation arm, one end is electrically connected technical solution of the present invention with the antenna feed point, described
Aerial radiation arm folds cabling and forms low frequency cell, the other end of the aerial radiation arm and the part adjacent thereto antenna
Radiation arm self coupling forms the first high-frequency resonant unit；In this way, in the case where realizing same Frequency, the multifrequency built-in aerial
Space hold volume smaller, i.e., in a limited space under the conditions of, can largely extend the length of low frequency cabling, avoid antenna
Bandwidth declines, to ensure the efficiency of antenna；Self coupling between the end of aerial radiation arm and some antennas radiation arm adjacent thereto
Generate the first high-frequency resonant unit so that this multifrequency built-in aerial is provided simultaneously with low-frequency range and the design requirement of high band, realizes
The design requirement of multi-frequency.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the structural schematic diagram of one embodiment of multifrequency built-in aerial of the present invention；
Fig. 2 is the structural schematic diagram of the radiating element of multifrequency built-in aerial in Fig. 1；
Fig. 3 is the structural schematic diagram after the radiating element expansion of multifrequency built-in aerial in Fig. 1.
Fig. 4 is that multifrequency built-in aerial is installed to the schematic diagram in the shell of wireless device in Fig. 1；
Fig. 5 is the VSWR standing wave patterns of multifrequency built-in aerial in Fig. 1；
Fig. 6 is the Return Loss return loss figures of multifrequency built-in aerial in Fig. 1；
Fig. 7 is the SMITH circle diagrams of multifrequency built-in aerial in Fig. 1；
Fig. 8 is the EFFI low frequency efficiency test charts of multifrequency built-in aerial in Fig. 1；
Fig. 9 is the EFFI high frequency efficiency test figures of multifrequency built-in aerial in Fig. 1；
Figure 10 is the structural schematic diagram of another embodiment of multifrequency built-in aerial of the present invention；
Figure 11 is the structural schematic diagram of the another embodiment of multifrequency built-in aerial of the present invention.
Drawing reference numeral explanation：
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained without creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
If it is to be appreciated that related in the embodiment of the present invention directionality instruction (such as up, down, left, right, before and after ...),
Then directionality instruction be only used for explaining relative position relation under a certain particular pose (as shown in the picture) between each component,
Motion conditions etc., if the particular pose changes, directionality instruction also correspondingly changes correspondingly.
If in addition, relating to the description of " first ", " second " etc. in the embodiment of the present invention, it is somebody's turn to do " first ", " second " etc.
Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill
The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy
Sign.In addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
It is enough realize based on, when the knot that conflicting or cannot achieve when will be understood that this technical solution occurs in the combination of technical solution
Conjunction is not present, also not the present invention claims protection domain within.
The present invention proposes a kind of multifrequency built-in aerial.
In an embodiment of the present invention, referring to figs. 1 to Fig. 3, which includes：
Circuit board 10 is equipped with antenna feed point 101；And
Aerial radiation arm 20, one end are electrically connected with the antenna feed point 101, and the aerial radiation arm 20 folds
Line forms low frequency cell, the other end of the aerial radiation arm 20 and the part adjacent thereto 20 self coupling shape of aerial radiation arm
At the first high-frequency resonant unit.
Specifically, the multifrequency built-in aerial 1 includes circuit board 10 and radiating element 20, wherein be provided on circuit board 10
Antenna feed point 101, while the RF moulds being connect with antenna feed point 101 by match circuit 102 are additionally provided on circuit board 10
Block 103, radiating element 20 is electrically connected with antenna feed point 101, in this way, passing through RF modules 103, match circuit 102, antenna feed
Electricity point 101 and radiating element 20 realize the reception and transmitting of wireless signal.
It is required according to antenna theory, corresponding λ/4 resonance length L ≈ of antenna low frequency, wherein λ=c/f, c are approximately equal to light
Speed, f is the required frequency of respective antenna, it follows that L ≈ c/4f, when the corresponding frequency f of antenna is lower, antenna it is humorous
Length of shaking L is bigger, and the physical length of antenna is bigger, and then when the frequency range of antenna is relatively low, due to antenna length requirement compared with
Greatly, the defect that will have insufficient space, cannot be satisfied the cabling demand of antenna, and then the beamwidth of antenna is caused to decline, efficiency
It reduces.
In the present embodiment, since above-mentioned aerial radiation arm 20 is by the way of folding cabling, same Frequency is being realized
In the case of, space hold volume smaller, i.e., in a limited space under the conditions of, can largely extend the length of low frequency cabling
Degree, avoids the beamwidth of antenna from declining, to ensure the efficiency of antenna.
It is emphasized that in this implementation, since aerial radiation arm 20 is by the way of folding cabling, aerial radiation arm 20
On one end (i.e. the end of aerial radiation arm 20) and aerial radiation arm 20 far from antenna feed point 101 with the aerial radiation arm 20
Self coupling phenomenon is formed between the adjacent some antennas radiation arm 20 in one end, and then forms the first high-frequency resonant unit, in this way, making
It obtains this multifrequency built-in aerial and is provided simultaneously with low-frequency range and the design requirement of high band, realize the design requirement of multi-frequency.
Technical solution of the present invention is electrically connected by using aerial radiation arm 20, one end with the antenna feed point 101,
The aerial radiation arm 20 folds cabling and forms low frequency cell, the other end of the aerial radiation arm 20 and part adjacent thereto
20 self coupling of the aerial radiation arm forms the first high-frequency resonant unit；In this way, in the case where realizing same Frequency, this is more
1 space hold volume smaller of frequency built-in aerial, i.e., in a limited space under the conditions of, can largely extend the length of low frequency cabling
Degree, avoids the beamwidth of antenna from declining, to ensure the efficiency of antenna；The end of aerial radiation arm 20 and some antennas spoke adjacent thereto
Self coupling generates the first high-frequency resonant unit between penetrating arm 20 so that this multifrequency built-in aerial 1 is provided simultaneously with low-frequency range and high band
Design requirement, realize the design requirement of multi-frequency.
Further, in the present embodiment, aerial radiation arm 20 includes external radiation arm 210 and prolongs from one end of external radiation arm
The interior radiation arm 220 stretched, 210 part of external radiation arm are arranged around interior radiation arm 220, and the other end connection of external radiation arm 220
To antenna feed point 101；External radiation arm 210 and the series winding of interior radiation arm 220 form low frequency cell；External radiation arm 210 and interior radiation
The coupling of arm 220 forms the first high-frequency resonant unit.Since 210 part of external radiation arm is arranged around interior radiation arm 220, on the one hand,
The whole cabling of aerial radiation arm 20 may make to arrange compacter, to reduce the occupancy demand to space, finally with limited
The development length of aerial radiation arm 20 is improved in space；On the other hand, since 210 part of external radiation arm surrounds interior radiation arm 220,
So that it is larger with the partial-length of 210 phase self coupling of external radiation arm on interior radiation arm 220, to ensure the first high-frequency resonant unit
Stiffness of coupling.
In the present embodiment, it is preferred that, above-mentioned external radiation arm 210 includes sequentially connected first radiation arm
211, the second radiation arm 212, third radiation arm 213 and the 4th radiation arm 214, interior radiation arm 220 and the 4th radiation arm 214 connect
It connects, the first radiation arm 211 and third radiation arm 213 extend along the length direction of interior radiation arm 220, the second radiation arm 212 and the
One radiation arm 211 extends along the width direction of interior radiation arm 220；Interior radiation arm 220 respectively with the first radiation arm 211, the second spoke
It penetrates arm 212 and third radiation arm 213 is set in distance, the first high-frequency resonant unit is formed with self coupling.It is understood that interior
Radiation arm 220 between the first radiation arm 211 and third radiation arm 213, wherein in radiation arm 220 be preferably set to the parallel
Between one radiation arm 211 and third radiation arm 213, to ensure interior radiation arm 220 and the first radiation arm 211, third radiation arm 213
Between coupling form the stability of high-frequency resonant.The one end of first radiation arm 211 far from the second radiation arm 212 passes through linking arm
200 connect with antenna feed point 101, in this way, by the way that linking arm 200 is arranged, and then can avoid ensureing that 210 entirety of external radiation arm is walked
The stability and consistency of line.
It should be noted that above-mentioned interior radiation arm 220 respectively with the first radiation arm 211, the second radiation arm 212, third spoke
Penetrating has gap between arm 213, interior radiation arm 220 respectively with the first radiation arm 211, the second radiation arm 212, third radiation arm
213 couplings are to form the first high-frequency resonant unit.Pass through radiation arm in change 220, the first radiation arm 211, the second radiation arm
212, the width of third radiation arm 213, the 4th radiation arm 214 so that the bending form of external radiation arm 210 and interior radiation arm 220
It changes, to change gap, interior radiation arm 220 and the second radiation arm between interior radiation arm 220 and the first radiation arm 211
The gap between gap and interior radiation arm 220 and third radiation arm 213 between 212, so in changing radiation arm 220 with
The stiffness of coupling and couple state of external radiation arm 210, final realize control the position of high-frequency resonant and the adjustment of impedance, i.e.,
Realize that the adjustment to the first high-frequency resonant unit controls.
In one embodiment, interior radiation arm 220 respectively between the first radiation arm 211 and third radiation arm 213 between
Away from the length direction along interior radiation arm 220 be it is continually changing or it is interior penetrate arm 220 respectively with the first radiation arm 211 and third
Spacing between radiation arm 213 is steady state value along the length direction of interior radiation arm 220.Interior radiation arm 220 is radiated with second respectively
Spacing between arm 212 and the 4th radiation arm 214 is continually changing along the width direction of interior radiation arm 220 or interior penetrates arm
220 respectively the spacing between the second radiation arm 212 and the 4th radiation arm 214 along the width direction of interior radiation arm 220 be constant
Value.It is preferred that be：Spacing between interior radiation arm 220 and the first radiation arm 211 is along the length side of interior radiation arm 220
To in gradually increasing or be gradually reduced setting；And/or the spacing between interior radiation arm 220 and third radiation arm 213 is along interior radiation
The length direction of arm 220 is in gradually to increase or be gradually reduced setting.
It is understood that in the present embodiment, for multifrequency built-in aerial 1, it is generally arranged at wireless device
It in shell 30, is limited by 30 inner space of shell, certain positions of usual 210 corresponding housing 30 of external radiation arm are bent to form
Avoid position.Specifically, it is preferred that, the first radiation arm 211, the second radiation arm 212, third radiation arm 213 and
One or more of four radiation arms 214 are extended along curve-like or polyline shaped, and then to form corresponding evacuation position, so as to
It is installed in the adaptation of multifrequency built-in aerial 1.
In the above-described embodiments, the interstice coverage D1 between 220 and first radiation arm 211 of above-mentioned interior radiation arm is preferably
0.2 millimeter to 5 millimeters；Interstice coverage D2 between 220 and second radiation arm 212 of above-mentioned interior radiation arm is preferably 0.2 millimeter to 5
Millimeter；Interstice coverage D3 between interior radiation arm 220 and third radiation arm 213 is preferably 0.5 millimeter to 8 millimeters, and then to carry
The frequency of the first high-frequency resonant unit of formation is coupled in height between radiation arm 220 and external radiation arm 210.
In order to further realize the multiband requirement of multifrequency built-in aerial 1, in the present embodiment, the 4th radiation arm 214 also prolongs
Stretching has coupling arm 230 over the ground, and foregoing circuit plate 20 is formed with ground level, and comparing has gap between coupling arm 230 and ground level,
The second high-frequency resonant unit is formed with coupling.It is understood that by the way that coupling arm 230 over the ground are arranged so that coupling arm over the ground
230 form ground connection with ground level couples.It is tied in the gap for forming a capacitor effect between coupling arm 230 and ground level over the ground
Structure, when coupling arm 230 is coupled with ground level formation ground connection over the ground, antenna feed point 101, external radiation arm 210, over the ground radiation arm
An analysis antenna with coupled capacitor is formed between 230 and ground level, and then forms the second high-frequency resonant unit.
In the correlation theory of capacitance, capacitance C=ε S/4 π kd, wherein S represent the facing area of capacitor plate, and d is capacitance
The spacing of pole plate, by the facing area S of change capacitor plate and the spacing d of capacitor plate, it can be achieved that the adjustment to capacitance C.
By above-mentioned theory it is found that spacing that can be by adjusting coupling arm 230 over the ground and ground level or coupling arm 230 over the ground
With the facing area of ground level, to realize the control to the coupled capacitor C sizes over the ground between coupling arm 230 and ground level, from
And the impedance of the second high-frequency resonant unit is adjusted, and then change the resonant frequency of the second high-frequency resonant unit.
It is appreciated that this multifrequency built-in aerial 1 has low frequency cell, the first high-frequency resonant unit and the second harmonic high frequency simultaneously
Shake unit, and then realizes the multiband requirement of antenna.
In the above-described embodiments, which is preferably 0.5 millimeter to 10
Millimeter, i.e., coupling arm 230 and the electrode pad distance range of the coupled capacitor of ground level are 0.5 millimeter to 10 millimeters over the ground, into
And to ensure to form efficient coupling between ground level and over the ground coupling arm 230.
In the present embodiment, there are many generation types of radiating element 20, wherein external radiation arm 210 and interior radiation arm 220
It is preferably made of one piece, external radiation arm 210 and interior radiation arm 220 can be 210 He of FPC winding displacements or external radiation arm at this time
Interior radiation arm 220 improves day built in the structural stability and multifrequency of multifrequency built-in aerial 1 made by metal clips
The job stability of line 1.
It is worth noting that external radiation arm 210 and the series winding of interior radiation arm 220 form low frequency cell, frequency range exists
700MHz to 960MHz；Interior radiation arm 220 and external radiation arm 210 intercouple to form the first high-frequency resonant unit each other,
Its frequency range is in 1710MHz to 2025MHz；Formation the is coupled between coupling arm 230 and the ground terminal on circuit board 10 over the ground
Two high-frequency resonant units, frequency range is in 2110MHz to 2700MHz.
With reference to Fig. 4, in a certain wireless device (by taking small-sized positioning device as an example), the 30 shape ruler of shell of the wireless device
Very little is long 72mm, wide 32mm, height 14.8mm, at this point, the projection size L2*L1 of the multifrequency built-in aerial in shell 30 is
The marginal portion of 27.5mm*14.15mm, the multifrequency built-in aerial are folded in shell 30, this wireless device desires antenna band
For 2G 850/900/1800/19003G W2100, and traditional design method is used to be difficult to realize the more of antenna in this space
Frequency range and low-frequency resonant requirement.
With reference to Fig. 5 to Fig. 8, when the frequency range of low frequency cell is the range 824MHz to 960MHz of design, antenna
Effect is preferable, low frequency bandwidth, standing wave depth, and efficiency reaches design requirement；With reference to Fig. 5 to Fig. 7, and Fig. 9 is combined, when antenna
For higher frequency in 1710-2170MHz, the effect of antenna is preferable, high frequency bandwidth, and standing wave depth, efficiency reaches design and wants
It asks.
Referring to Fig.1 0, it is a variant embodiment of this multifrequency built-in aerial, in this embodiment, aerial radiation arm
2020 itself form with low frequency cabling, and external radiation arm 210 forms the first high-frequency branch, interior radiation arm with 220 self coupling of interior radiation arm
Radiation arm 230 over the ground are formed on 220, radiation arm 230 forms ground connection with the ground level of circuit board and couples over the ground, and it is high to form second
Frequency division branch.
Referring to Fig.1 1, it is another variant embodiment of this multifrequency built-in aerial, in this embodiment, aerial radiation arm
20 itself form with low frequency cabling, while aerial radiation arm 20 extends that there are two radiation arm 230 over the ground, so respectively with circuit board
Ground level couple form the first high-frequency branch and the second high-frequency branch respectively, 20 therein of aerial radiation arm generates self coupling shape
At third high-frequency branch, at this point, the frequency band of the multifrequency built-in aerial 1 is more, multifrequency significant effect.
The present invention also proposes a kind of wireless terminal, which includes shell and multifrequency built-in aerial, in the multifrequency
Antenna is set to be installed in the shell.The concrete structure of the multifrequency built-in aerial is with reference to above-described embodiment, due to this wireless terminal
Use whole technical solutions of above-mentioned all embodiments, therefore at least institute caused by the technical solution with above-described embodiment
There is advantageous effect, this is no longer going to repeat them.
It should be noted that above-mentioned wireless terminal can be the equipment such as positioning terminal, communication terminal.
The foregoing is merely the preferred embodiment of the present invention, are not intended to limit the scope of the invention, every at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
In the scope of patent protection that other related technical areas are included in the present invention.
Claims (10)
1. a kind of multifrequency built-in aerial, which is characterized in that including：
Circuit board, the circuit board are equipped with antenna feed point；And
Aerial radiation arm, one end are electrically connected with the antenna feed point, and the aerial radiation arm folds cabling and forms low frequency
Unit, the other end of the aerial radiation arm form the first high-frequency resonant with the part adjacent thereto aerial radiation arm self coupling
Unit.
2. multifrequency built-in aerial as described in claim 1, which is characterized in that the aerial radiation arm includes external radiation arm and oneself
The interior radiation arm that one end of external radiation arm extends, the external radiation arm section is arranged around the interior radiation arm, and the outer spoke
The other end for penetrating arm is connected to the antenna feed point；
The external radiation arm and the interior radiation arm contact to form the low frequency cell；The external radiation arm and the interior radiation arm
Coupling forms the first high-frequency resonant unit.
3. multifrequency built-in aerial as claimed in claim 2, which is characterized in that the external radiation arm includes sequentially connected first
Radiation arm, the second radiation arm, third radiation arm and the 4th radiation arm, the interior radiation arm are connect with the 4th radiation arm, institute
The length direction that the first radiation arm and the third radiation arm are stated along the interior radiation arm extends, second radiation arm and described
First radiation arm extends along the width direction of the interior radiation arm；
The interior radiation arm is set with first radiation arm, second radiation arm and the third radiation arm in interval respectively
It sets, the first high-frequency resonant unit is formed with self coupling.
4. multifrequency built-in aerial as claimed in claim 3, which is characterized in that the interior radiation arm and first radiation arm it
Between spacing along the interior radiation arm length direction in gradually increasing or be gradually reduced setting；And/or
Spacing between the interior radiation arm and the third radiation arm increases along the length direction of the interior radiation arm in gradual
Or setting is gradually reduced.
5. multifrequency built-in aerial as claimed in claim 3, which is characterized in that first radiation arm, second radiation arm,
One or more of the third radiation arm and the 4th radiation arm are extended along curve-like or polyline shaped.
6. multifrequency built-in aerial as claimed in claim 3, which is characterized in that the interior radiation arm and first radiation arm it
Between interstice coverage be 0.2 millimeter to 5 millimeters；Interstice coverage between the interior radiation arm and second radiation arm is 0.2
Millimeter is to 5 millimeters；Interstice coverage between the interior radiation arm and the third radiation arm is 0.5 millimeter to 8 millimeters.
7. the multifrequency built-in aerial as described in any one of claim 3 to 6, which is characterized in that the 4th radiation arm is also
It is extended with coupling arm over the ground, the circuit board forms ground level, has gap between the comparison coupling arm and the ground level,
The second high-frequency resonant unit is formed with coupling.
8. multifrequency built-in aerial as claimed in claim 7, which is characterized in that between the coupling arm over the ground and the ground level
Interstice coverage be 0.5 millimeter to 10 millimeters.
9. multifrequency built-in aerial as described in claim 1, which is characterized in that the aerial radiation arm is formed by FPC winding displacements
's.
10. a kind of wireless terminal, which is characterized in that including in shell and multifrequency as in one of claimed in any of claims 1 to 9
Antenna is set, the multifrequency built-in aerial is installed in the shell.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810173100.2A CN108417970B (en) | 2018-02-28 | 2018-02-28 | Multi-frequency built-in antenna and wireless terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810173100.2A CN108417970B (en) | 2018-02-28 | 2018-02-28 | Multi-frequency built-in antenna and wireless terminal |
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| CN108417970A true CN108417970A (en) | 2018-08-17 |
| CN108417970B CN108417970B (en) | 2020-10-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111326857A (en) * | 2020-03-03 | 2020-06-23 | 普联技术有限公司 | Multi-frequency antenna structure and communication equipment |
| CN111864350A (en) * | 2019-04-29 | 2020-10-30 | 北京小米移动软件有限公司 | Antenna and terminal |
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| CN111864350A (en) * | 2019-04-29 | 2020-10-30 | 北京小米移动软件有限公司 | Antenna and terminal |
| CN111864350B (en) * | 2019-04-29 | 2021-08-24 | 北京小米移动软件有限公司 | Antenna and terminal |
| US11165153B2 (en) * | 2019-04-29 | 2021-11-02 | Beijing Xiaomi Mobile Software Co., Ltd. | Antenna and terminal |
| CN111326857A (en) * | 2020-03-03 | 2020-06-23 | 普联技术有限公司 | Multi-frequency antenna structure and communication equipment |
| CN111326857B (en) * | 2020-03-03 | 2022-10-14 | 普联技术有限公司 | Multi-frequency antenna structure and communication equipment |
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| CN108417970B (en) | 2020-10-27 |
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