CN108767450A - A kind of antenna system and terminal - Google Patents
A kind of antenna system and terminal Download PDFInfo
- Publication number
- CN108767450A CN108767450A CN201810660458.8A CN201810660458A CN108767450A CN 108767450 A CN108767450 A CN 108767450A CN 201810660458 A CN201810660458 A CN 201810660458A CN 108767450 A CN108767450 A CN 108767450A
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- circuit
- feed
- tune
- resonance
- antenna system
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
-
- 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
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
Abstract
A kind of antenna system of present invention offer and terminal, the antenna system are applied to the terminal with metal shell, and the metal shell is equipped with the gap of filling nonmetallic materials, and the metal shell has been separated to form resonance arm and coupling arm by the gap；The antenna system includes the resonance arm, the coupling arm, feed circuit, the first tuning circuit and second tune circuit；Wherein, the feed circuit is connected between the first feed point of the resonance arm and ground terminal, and first tuning circuit and the feed circuit in parallel, the second tune circuit are connected between the second feed point of the coupling arm and ground terminal.Antenna system low frequency and the independent tuning of medium-high frequency may be implemented in the present invention, can effectively realize that carrier wave polymerize antenna system, improve the radiation efficiency of antenna system, realize the covering of wide-band.
Description
Technical field
The present embodiments relate to field of communication technology more particularly to a kind of antenna systems and terminal.
Background technology
It improving with the development of science and technology, the communication technology is developed rapidly and significant progress, and with the communication technology
Raising, the popularization and improvement of electronic product to a unprecedented height, more and more terminals such as mobile phone, smart television
With computer etc. at an indispensable part in for people's lives.
While terminal is popularized, the functional type and performance requirement that user has terminal are higher and higher, such as audio
Function, camera function, camera function and fast charge charge function etc. all have become the necessary functions of terminal.
While increasingly being improved with the function of terminal, the aspect that the appearance and texture of terminal are also pursued at user,
And the terminal of metal shell, since outstanding metal-like has obtained the favor of more and more users.But in terminal enclosure gold
Belong under the enhancing of texture demand and the smaller and smaller requirement of empty regions of antenna, the Q values of antenna increase, aerial radiation effect
Rate reduces and bandwidth narrows so that existing antenna is difficult to realize wide-band covering.
Invention content
A kind of antenna system of offer of the embodiment of the present invention and terminal are difficult to realize wide-band covering to solve existing antenna
Problem.
To solve the above-mentioned problems, the invention is realized in this way：
In a first aspect, an embodiment of the present invention provides a kind of antenna system, it is applied to the terminal with metal shell, it is described
Metal shell be equipped with filling nonmetallic materials gap, the metal shell by the gap be separated to form resonance arm and
Coupling arm；The antenna system includes the resonance arm, the coupling arm, feed circuit, the first tuning circuit and second tune
Circuit；Wherein, the feed circuit is connected between the first feed point of the resonance arm and ground terminal, first tuning circuit
With the feed circuit in parallel, the second tune circuit is connected between the second feed point of the coupling arm and ground terminal.
Second aspect, the embodiment of the present invention also provide a kind of terminal, which includes antenna system as described above and gold
Belong to shell, the metal shell is equipped with the gap of filling nonmetallic materials, and the metal shell separates shape by the gap
At having resonance arm and coupling arm；The antenna system includes the resonance arm, the coupling arm, feed circuit, the first tuning electricity
Road and second tune circuit；Wherein, the feed circuit is connected between the first feed point of the resonance arm and ground terminal, described
First tuning circuit and the feed circuit in parallel, the second tune circuit are connected to the second feed point of the coupling arm and connect
Between ground terminal.
In this way, being separated to form resonance arm and coupling arm by the gap of filling nonmetallic materials by being arranged on metal shell
Two cantilevers, and feed circuit, and the first tuning circuit with the feed circuit in parallel are set on resonance arm, it is coupling
Second tune circuit is set on arm.So as to realize antenna system by resonance arm, feed circuit and the first tuning circuit
Low frequency tunes, and realizes that the medium-high frequency of antenna system tunes by resonance arm, feed circuit and second tune circuit, and then realize day
The independent tuning of linear system system low frequency and medium-high frequency, can effectively realize that carrier wave polymerize antenna system, improve the radiation effect of antenna system
Rate realizes the covering of wide-band.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, needed in being described below to the embodiment of the present invention
Attached drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention,
For those of ordinary skill in the art, without having to pay creative labor, it can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structure chart of metal shell provided in an embodiment of the present invention；
Fig. 2 is one of the structure chart of antenna system provided in an embodiment of the present invention；
Fig. 3 is the two of the structure chart of antenna system provided in an embodiment 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 embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained without creative efforts
Example, shall fall within the protection scope of the present invention.
Also referring to Fig. 1 to Fig. 3.
In embodiments of the present invention, antenna system can be applied to the terminal with metal shell.Wherein, metal shell can
To be the rear shell of terminal, it can also be the center or other metal parts of terminal, can specifically be determined according to the practical structures of terminal
Fixed, the embodiment of the present invention is not construed as limiting this.
Terminal can be mobile phone, tablet computer (Tablet Personal Computer), personal digital assistant
(personal digital assistant, abbreviation PDA), mobile Internet access device (Mobile Internet Device, MID)
Or wearable device (Wearable Device) etc..
As shown in Figure 1, metal shell 10 is equipped with the gap 11 of filling nonmetallic materials.Metal shell 10 is divided in gap 11
Every formation ontology 12 and two metal cantilevers, wherein two metal cantilevers are respectively resonance arm 13 and coupling arm 14.It needs to illustrate
, gas, such as air it can be appreciated that nonmetallic materials.
Resonance arm 13 and 14 uniform end of coupling arm are grounded, and the other end is free end, and the free end of resonance arm 13 with couple
The free end of arm 14 is opposite and is spaced setting by the opening in gap 11 110.
It should be understood that the embodiment of the present invention is not intended to limit the ground connection side of one end that resonance arm 13 is grounded with coupling arm 14
Formula.When specific implementation, one end that resonance arm and coupling arm 14 are grounded can also be led to by being fixedly connected with ground connection with ontology 12
Cross connection ground terminal ground connection.In embodiments of the present invention, that is, ground terminal can be antenna reference, can also be mainly, mainly
Plate.Specifically, mainboard (pcb board) and coupled a sheet of whole metal, with antenna radiator, i.e. feed is formed
Induced current, the reference ground as antenna.
In Fig. 1, gap 11 is L-shaped, and resonance arm 13 and coupling arm 14 are located at the adjacent both sides of metal shell 10
Marginal position, specifically, resonance arm 13 are located at the top edge position of metal shell, and coupling arm 14 is located at the right side of metal shell 10
Lateral edges position.It will be appreciated that the present invention and being not so limited the shape in gap and resonance arm 13 and coupling arm 14 exist
Position in metal shell 10.In other embodiments, gap 11 can also be in other shapes, resonance arm 13 and coupling arm 14
Position in metal shell 10 can specifically determine that the embodiment of the present invention does not limit this according to the performance shape in gap 11
It is fixed.
Illustratively, in some embodiments, gap 11 can also be of a straight line type, in this embodiment, resonance arm
13 and coupling arm 14 be located at metal shell 10 the same side marginal position, and the free end of resonance arm 13 and coupling arm 14 from
By holding opposite and being spaced setting by the opening in gap 11 110.
As shown in Fig. 2, antenna system includes resonance arm 13, coupling arm 14, feed circuit 21, the first tuning circuit 22 and
Two tuning circuits 23.Wherein, feed circuit 21 is connected between the first feed point 131 of resonance arm 13 and ground terminal, the first tuning
Circuit 22 is in parallel with feed circuit 21, and second tune circuit 23 is connected between the second feed point 141 of coupling arm 14 and ground terminal.
Wherein, the length of resonance arm 13 can be more than the length of coupling arm 14, and resonance arm 13 can be used for generating low frequency
Resonance mode, coupling arm 14 can be used for generating the resonance mode of medium-high frequency.Therefore, resonance arm 13 is properly termed as low-frequency resonant
Arm, coupling arm 14 are properly termed as medium-high frequency coupling arm.
First tuning circuit 22 tunes for realizing low frequency so that the low frequency that different frequency range may be implemented in resonance arm 13 is humorous
It shakes；Second tune circuit 23 tunes for realizing medium-high frequency so that the medium-high frequency resonance of different frequency range may be implemented in coupling arm 14.
Feed circuit 21 is used for radiant electromagnetic energy, and feed circuit 21 may include at least two branches, to provide
Different radiation energies.Resonance arm 13 is connected with feed circuit 21, and therefore, resonance arm 13 can be presented directly by feed circuit 21
Electricity.Coupling arm 14 is without connection feed circuit 21, but coupling arm 14 can be fed by way of coupling, i.e. feed circuit 21
Radiation energy can be transferred to coupling arm 14 in a coupled manner through resonance arm 13 by the opening 110 in gap 11.
The antenna system of the present embodiment is separated to form by being arranged on metal shell by the gap of filling nonmetallic materials
Two cantilevers of resonance arm and coupling arm, and feed circuit is set on resonance arm, and first with the feed circuit in parallel
Second tune circuit is arranged in tuning circuit on coupling arm.So as to pass through resonance arm, feed circuit and the first tuning circuit
The low frequency tuning for realizing antenna system, the medium-high frequency of antenna system is realized by resonance arm, feed circuit and second tune circuit
Tuning, and then realize the independent tuning of antenna system low frequency and medium-high frequency, it can effectively realize that carrier wave polymerize antenna system, improve day
The radiation efficiency of linear system system, realizes the covering of wide-band.
Optionally, the first feed point 131 can be close to the free end of resonance arm 13；Second feed point 141 can be close to coupling arm
14 free end.In this way, in the scene that coupling arm 14 is fed by way of coupling, the first feed point 131, opening can be shortened
The distance between 110 and 141 three of the second feed point so as to improve coupling effect, and then can increase covering frequency bandwidth.
Optionally, feed circuit 21 may include the first antenna switch 211 being connected in series with, 212 and of feed match circuit
Feed 213.When specific implementation, first antenna switch 211, feed match circuit 212 and feed 213 are suitable in feed circuit 21
Sequence can be set according to actual needs, and the embodiment of the present invention is not construed as limiting this.
Illustratively, as shown in Fig. 2, feed circuit 21 may include the first antenna switch 211 being sequentially connected in series, feedback
Source match circuit 212 and feed 213；Wherein, first antenna switch 211 connects the first feed point 131, and feed 213 connects ground terminal.
Specifically, feed 213 is antenna radiator, can be sheet metal, but not as the carrier of radiant electromagnetic energy
It is only limitted to this.
First antenna switch 211 can be radiation mode tuning switch, for feed match circuit 212, feed 213 to be connected
With resonance arm 13.When specific implementation, first antenna switch 211 can be the logic circuit for having the above conducting state of m kinds, accordingly
Ground, feed match circuit 212 may include n strip feed match circuit branches, and in the capacitance of every branch, inductance at least
One collocation is different.Wherein, m is the positive integer more than 1, and n can be the positive integer more than or equal to m.
In this way, different sub- feed matching electricity can be connected by the different conducting states of control first antenna switch 211
Road is in different radiation modes to control feed circuit 21, and then realizes the tuning of antenna system different frequency range.
Optionally, first antenna switch 211 may include the first control terminal, first end and second end；Feed match circuit
212 may include 2121 and second sub- feed match circuit 2122 of the first sub- feed match circuit；Wherein, first antenna switchs
211 first end is electrically connected with the first sub- feed match circuit 2121, the second end of first antenna switch 211 and the second sub- feed
Match circuit 2122 is electrically connected.
Further, as shown in Fig. 2, the first control terminal of first antenna switch 211 can connect the first feed point 131.?
In other embodiment, the first control terminal of first antenna switch 211 can connect feed 213, specifically can be according to actual needs
It determines, the embodiment of the present invention is not construed as limiting this.
It should be understood that capacitance, the inductance of 2121 and second sub- feed match circuit 2122 of the first sub- feed match circuit
In at least one of collocation it is different, it is electric to which feed when first antenna switch 211 is in different conducting states, can be controlled
Road 21 is in different radiation modes.
Specifically, in the case of the first end of the control terminal of first antenna switch 211 connection first antenna switch 211,
First antenna switch 211 is in the first conducting state.The feed 213 of feed circuit 21 and the first sub- feed match circuit are in work
Make state, feed circuit 21 is in the first radiation mode.
In the case of the second end of the control terminal of first antenna switch 211 connection first antenna switch 211, first antenna
Switch 211 is in the second conducting state.The feed 213 of feed circuit 21 and the second sub- feed match circuit 2122 are in work shape
State, feed circuit 21 are in the second radiation mode.
Optionally, the first tuning circuit 22 includes the first tuning switch 221 and the first resonance matching circuit being connected in series with
222.When specific implementation, the sequence of the first tuning switch 221 and the first resonance matching circuit 222 in the first tuning circuit 22 can
To be arranged according to actual needs, the embodiment of the present invention is not construed as limiting this.
Illustratively, as shown in Fig. 2, one end of the first tuning switch 221 can connect the first feed point 131, the first tuning
The other end of switch 221 can connect one end of the first resonance matching circuit 222, the other end of the first resonance matching circuit 222
Connect ground terminal.
Specifically, the first tuning switch 221 is used to adjust the electrical length of resonance arm 13, realizes low frequency tuning, therefore, first
Tuning switch 221 can be low-frequency range (1GHz or less) antenna tuning switch.
When specific implementation, the first tuning switch 221 can be the logic circuit for having the above conducting state of k kinds, correspondingly,
First resonance matching circuit 222 may include j strip resonance matching circuits, and at least one in the capacitance of every branch, inductance
The collocation of item is different.Wherein, k is the positive integer more than 1, and j can be the positive integer more than or equal to k.
In this way, can be realized in antenna system low-frequency range not by the different conducting states of the first tuning switch 221 of control
With the tuning of frequency range.
Optionally, the first tuning switch 221 includes the second control terminal, third end and the 4th end；First resonance matching circuit
222 include 2221 and second sub- resonance matching circuit 2222 of the first sub- resonance matching circuit；Wherein, first tuning switch 221
Third end is electrically connected with the first sub- resonance matching circuit 2221, the 4th end and the second sub- resonance matching of the first tuning switch 221
Circuit 2222 is electrically connected.
Further, as shown in Fig. 2, the second control terminal of the first tuning switch 221 can connect the first feed point 131.When
So, in other embodiments, the second control terminal of the first tuning switch 221 can connect ground terminal, specifically can be according to reality
It needs to determine, the embodiment of the present invention is not construed as limiting this.
It should be understood that capacitance, the inductance of 2221 and second sub- resonance matching circuit 2222 of the first sub- resonance matching circuit
In at least one of collocation it is different, to which when the first tuning switch 221 is in different conducting states, aerial system may be implemented
The tuning of different frequency range in low-frequency range of uniting.
Specifically, the case where the second control terminal of the first tuning switch 221 connects the third end of the first tuning switch 221
Under, the first tuning switch 221 is in the first conducting state.First sub- resonance matching circuit 2221 of the first tuning circuit 22 is in
The tuning of the first frequency range in antenna system low-frequency range may be implemented in working condition.
In the case where the second control terminal of the first tuning switch 221 connects the third end of the first tuning switch 221, first
Tuning switch 221 is in the second conducting state.Second sub- resonance matching circuit 2222 of the first tuning circuit 22 is in work shape
The tuning of the second frequency range in antenna system low-frequency range may be implemented in state.
Wherein, the specific range of the second frequency range in the first frequency range and low-frequency range in low-frequency range specifically can be according to antenna
The structure design of system, such as the tool of tuned cell in 2221 and second sub- resonance matching circuit 2222 of the first sub- resonance matching circuit
The body form of expression determines that the embodiment of the present invention is not construed as limiting this.
Further, as shown in figure 3, the first tuning circuit 22 can also include the first tuned cell 223, the first tuning member
One end of part 223 is electrically connected with the first feed point 131, and the second end of the first tuned cell 223 is electrically connected with ground terminal.
As shown in figure 3, it is found that first tuning switch 221 in parallel of the first tuned cell 223 and the first resonance matching circuit
222, form parallel-connection structure.
First tuned cell 223 is mainly used for tuning low frequency matching, realizes the electrical length of some special frequency channel of 1GHz or less
Matching tuning.When specific implementation, as shown in figure 3, the first tuned cell 223 can show as by-pass inductor component, but not only limit
In this, in some embodiments, the first tuned cell 223 can also show as shunt capacitance component, specifically can be according to reality
Demand determines that the embodiment of the present invention is not construed as limiting this.
In figure 3, the first tuned cell 223 is a branch of the first tuning circuit 22, i.e. the first tuned cell 223 with
First tuning circuit, 22 combination settings.It will be appreciated that in other embodiments, the first tuned cell 223 can also be with
First tuning circuit 22 is independently arranged.
Optionally, as shown in Fig. 2, second tune circuit 23 includes the second tune switch 231 that is sequentially connected in series and the
Two resonance matching circuits 232.When specific implementation, second tune switch 231 and second tune match circuit 232 are in second tune electricity
Sequence in road 23 can be set according to actual needs, and the embodiment of the present invention is not construed as limiting this.
Illustratively, as shown in Fig. 2, one end of second tune switch 231 can connect the second feed point 141, second tune
The other end of switch 231 can be connected with one end of second tune match circuit 232, the other end of second tune match circuit 232
Ground terminal.
Second tune switch 231 is used to adjust the electrical length of coupling arm 14, realizes medium-high frequency tuning, therefore, second tune
Switch 231 can be medium-high frequency section (1.7GHz~2.7GHz) antenna tuning switch.
When specific implementation, second tune switch 231 can be the logic circuit for having the above conducting state of p kinds, correspondingly,
Second tune match circuit 232 may include q strip resonance matching circuits, and at least one in the capacitance of every branch, inductance
The collocation of item is different.Wherein, p is the positive integer more than q, and p is the positive integer more than or equal to q.
In this way, can be realized in antenna system medium-high frequency section by the different conducting states of control second tune switch 231
The tuning of different frequency range.
Optionally, second tune switch 231 includes third control terminal, the 5th end and the 6th end；Second tune match circuit
232 include sub- 2321 and the 4th sub- resonance matching circuit 2322 of resonance matching circuit of third；Wherein, second tune switch 231
The sub- resonance matching circuit of 5th end and third 2321 is electrically connected, the 6th end and the 4th sub- resonance matching of second tune switch 231
Circuit 2322 is electrically connected.
Further, as shown in Fig. 2, the third control terminal of second tune switch 231 can connect the second feed point 141.When
So, in other embodiments, the third control terminal of second tune switch 231 can connect ground terminal, specifically can be according to reality
It needs to determine, the embodiment of the present invention is not construed as limiting this.
It should be understood that capacitance, the inductance of sub- 2321 and the 4th sub- resonance matching circuit 2322 of resonance matching circuit of third
In at least one of collocation it is different, to which when second tune switch 231 is in different conducting states, aerial system may be implemented
The tuning of different frequency range in medium-high frequency section of uniting.
Specifically, the case where the third control terminal of second tune switch 231 connects five end of second tune switch 231
Under, second tune switch 231 is in the first conducting state.The sub- resonance matching circuit of the third of second tune circuit 23 2321 is in
The tuning of the first frequency range in antenna system Mid Frequency or high band may be implemented in working condition.
In the case of six end of the third control terminal of second tune switch 231 connection second tune switch 231, second
Tuning switch 231 is in the second conducting state.4th sub- resonance matching circuit 2322 of second tune circuit 23 is in work shape
The tuning of the second frequency range in antenna system Mid Frequency or high band may be implemented in state.
Wherein, the first frequency range in Mid Frequency or high band, the specific range of the second frequency range in Mid Frequency or high band
It specifically can be according to the structure design of antenna system, such as sub- 2321 and the 4th sub- resonance matching circuit of resonance matching circuit of third
The specific manifestation form of tuned cell determines in 2322, and the embodiment of the present invention is not construed as limiting this.
Further, as shown in figure 3, second tune circuit 23 further includes second tune element 233, second tune element
233 one end is electrically connected with the first feed point 131, and another two end of second tune element 233 is electrically connected with ground terminal.
As shown in figure 3, it is found that the second tune switch 231 in parallel of second tune element 233 and second tune match circuit
232, form parallel-connection structure.
Second tune element 233 is mainly used for tuning medium-high frequency matching, realizes some specific frequency in 1.7GHz~2.7GHz
The electrical length matching tuning of section.When specific implementation, as shown in figure 3, second tune element 233 can show as by-pass inductor portion
Part, but it is not limited only to this, in some embodiments, second tune element 233 can also show as shunt capacitance component, specifically
It can be determined according to actual demand, the embodiment of the present invention is not construed as limiting this.
In figure 3, second tune element 233 be second tune circuit 23 a branch, i.e., second tune element 233 with
23 combination settings of second tune circuit.It will be appreciated that in other embodiments, second tune element 233 can also be with
Second tune circuit 23 is independently arranged.
It should be noted that in embodiments of the present invention, switch and match circuit can be set on the mainboard of terminal,
At this point, switch can be connected by metal connecting piece with feed point.Illustratively, the first tuning switch 221 and the first resonance matching
Circuit 222 can be set on the mainboard of terminal, at this point, the first tuning switch 221 can pass through metal connecting piece and resonance
First feed point 131 of arm 13 is connected.
Wherein, match circuit is for adjusting in working frequency range internal impedance so that impedance is conjugated before and after circuit, and matching is good.
When switch has the logic circuit of at least two or more conducting states, switch can specifically show as single pole multiple throw, such as
For switch tool there are two types of when the logic circuit of conducting state, switch can specifically show as single-pole double-throw switch (SPDT), but be not limited only to this.
In addition, in the match circuit of any one branch, switch and its attached match circuit can be interchanged position and generate
Same function can also be that the first resonance matching circuit 222 passes through the first tuning switch such as in the first tuning circuit 22
221 connection ground terminals.
It should be noted that the embodiment for the plurality of optional introduced in the embodiment of the present invention, as shown in figure 3, each other may be used
It is realized be combineding with each other；It can also be implemented separately, this embodiment of the present invention is not construed as limiting.
The antenna system of the embodiment of the present invention at least has following improvement：
On the one hand, by designing low-frequency resonant arm 13 and medium-high frequency coupling arm 14, frequency can be realized on antenna structure
Rate is relatively independent.
On the other hand, the first tuning switch 221 being arranged on resonance arm 13 is tuned for low frequency, is arranged in coupling arm
Second tune switch 231 on 14 is tuned for medium-high frequency, so as to realize that switched tuning pattern is relatively independent.
Feed match circuit 212, the first resonance matching circuit 222 and second tune match circuit 232, may each be inductance
It with the complex match circuit of at least one of capacitance composition, can specifically be set according to Antenna Design demand, the present invention is implemented
Example is not construed as limiting this.
In the structure for determining feed match circuit 212, the first resonance matching circuit 222 and second tune match circuit 232
It afterwards, can be by adjusting first antenna switch 211, the first tuning switch 221 and second tune switch 231 when specific implementation
Combination between conducting and disconnection, to adjust the frequency range of antenna system and the width of band bandwidth, to realize antenna full
Under the demand of sufficient metal shell texture and the requirement of small headroom environment, the covering of low, middle and high frequency section bandwidth may be implemented.
Below between the frequency band of different scenes CA (Carrier Aggregation, carrier wave polymerization) antenna tuning design into
Row illustrates.
Wherein, LB (Low Band, low-frequency band) can specifically show as the frequency range of 700MHz~960MHz；MB
(Middle Band, mf band) can specifically show as the frequency range of 1710MHz~2170MHz；HB (High Band, intermediate frequency
Wave band) it can specifically show as the frequency range of 2300MHz-2690MHz.It will be appreciated that agreement may be to frequency range that it includes
Range is repartitioned, and the present invention can not be influenced by dividing.
CA antenna tunings design between scene one, LB and MB frequency bands.
Example 1, B5 polymerize Antenna Design with B3 carrier waves.
Wherein, B5 belongs to LB, and B3 belongs to MB.
When specific implementation, resonance arm 13 can pass through the conducting state of the first tuning switch 221 of adjusting, the first tuning of adjustment
The attached matching element of switch 221, i.e. matching element in the first resonance matching circuit 222 be tuned to B5 frequency ranges, at this point, first
The attached matching element of duplexer 211, i.e. matching element in feed match circuit 212 could be provided as a capacitance, and
The capacitance can use in medium-high frequency carrier wave polymerization state.
And B3 can then pass through the coupling that is open, the adjustment of 14 Design of length of coupling arm and the conducting of second tune switch 231
Resonance is realized in state adjustment, at this point, the tuned cell in second tune match circuit 232 could be provided as inductance, but is not only limited
In this.
In practical applications, the opening 110 in gap 11, the i.e. spacing of the free end of resonance arm 13 and coupling arm 14 need to protect
Coupling arm 14 can be coupled to through resonance arm 13 and by opening 110 by demonstrate,proving the RF energy of feed 213, specifically could be provided as
1.2 millimeters, 1.5 millimeters or 1.8 millimeters, but it is not limited only to this.
Example 2, B5 polymerize Antenna Design with B1 carrier waves.
Wherein, B5 belongs to LB, and B1 belongs to MB.
Resonance arm 13 be tuned to B5 frequency ranges principle it is identical as example 1, specifically refer to the description in example 1, herein not
It repeats again.It, can be on the basis of antenna system configuration is fixed (refer to opening coupling such as, the design of resonance arm length dimension complete)
By adjusting the conducting state of second tune switch 231, the attached matching element of adjustment second tune switch 231, i.e., second adjusts
Tuned cell in humorous match circuit 232 realizes B1 resonance, at this point, the tuned cell in second tune match circuit 232 can be with
For inductance.
CA antenna tunings design between scene two, LB and HB frequency bands.
Example 3, B28 polymerize Antenna Design with B7 carrier waves.
Wherein, B28 belongs to LB, and B7 belongs to HB.
On the basis of antenna system configuration is fixed (referring to that such as opening coupling, the design of 13 length dimension of resonance arm are completed),
The attached matching element of the first tuning switch 221, i.e., the can be adjusted by adjusting the conducting state of the first tuning switch 221
Tuned cell in one resonance matching circuit 222 be tuned to B28 frequency ranges, at this point, the tuning member in the first resonance matching circuit 222
Part could be provided as capacity cell.
It adjusts the conducting state of second tune switch 231, adjusts the attached matching element of second tune switch 231, i.e., the
Tuned cell in two resonance matching circuits 232 realizes B1 resonance, at this point, the tuned cell in second tune match circuit 232
It can be inductance.Further, in the case where inductance tuning B7 effect is inadequate, second tune match circuit 232 can be arranged
Capacitance tuning can more effectively realize the control of 14 resonant frequency of coupling arm.
CA antenna tunings design between scene three, MB frequency bands.
Example 4, B1 polymerize Antenna Design with B3 carrier waves.
The conducting state of adjusting second tune switch 231, the attached inductance member of adjustment second tune switch 231 can be passed through
Part parameter, i.e. inductance element parameter in second tune match circuit 232, and can be by adjusting first antenna switch 211
Conducting state, the attached capacity cell parameter of adjustment first antenna switch 211, i.e. electricity in the first resonance matching circuit 222
Hold component parameters, you can realize that B1 polymerize Antenna Design with B3 carrier waves.
CA antenna tunings design between scene three, MB and HB frequency bands.
Example 5, B3 polymerize Antenna Design with B7 carrier waves.
Wherein, B3 belongs to MB, and B7 belongs to HB.
Mode one can adjust the attached of second tune switch 231 by the conducting state of adjusting second tune switch 231
Belong to inductance element parameter, i.e. inductance element parameter in second tune match circuit 232, and can be by adjusting first antenna
The conducting state of switch 211, the attached capacity cell parameter of adjustment first antenna switch 211, i.e. the first resonance matching circuit 222
In capacity cell parameter, you can realize B3 polymerize Antenna Design with B7 carrier waves.
Mode two can adjust the attached of second tune switch 231 by the conducting state of adjusting second tune switch 231
Belong to inductance element parameter, i.e. inductance element parameter in second tune match circuit 232, and can be by adjusting the first tuning
The conducting state of switch 221 adjusts the attached inductance element working condition of the first tuning switch 221, i.e. the first resonance matching electricity
Inductance element working condition in road 222, you can realize that B3 polymerize Antenna Design with B7 carrier waves.
Antenna tuning design principle can refer to foregoing description, not make exhaustion herein.
The embodiment of the present invention also provides a kind of terminal, which includes antenna system as described above and metal shell, institute
The gap that metal shell is equipped with filling nonmetallic materials is stated, the metal shell has been separated to form resonance arm by the gap
And coupling arm；The antenna system includes the resonance arm, the coupling arm, feed circuit, the first tuning circuit and the second tune
Humorous circuit；Wherein, the feed circuit is connected between the first feed point of the resonance arm and ground terminal, the first tuning electricity
Road and the feed circuit in parallel, the second tune circuit are connected between the second feed point of the coupling arm and ground terminal.
Wherein, the structure of antenna system is referred to above-described embodiment, and details are not described herein.As a result of above-mentioned implementation
Antenna system in example, therefore terminal provided in an embodiment of the present invention has the institute of above-mentioned antenna system effective, to avoid weight
Multiple, details are not described herein.
More than, specific implementation mode only of the invention, but scope of protection of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all cover
Within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (11)
1. a kind of antenna system is applied to the terminal with metal shell, which is characterized in that the metal shell is equipped with filling
The gap of nonmetallic materials, the metal shell have been separated to form resonance arm and coupling arm by the gap；
The antenna system includes the resonance arm, the coupling arm, feed circuit, the first tuning circuit and second tune electricity
Road；
Wherein, the feed circuit is connected between the first feed point of the resonance arm and ground terminal, first tuning circuit
With the feed circuit in parallel, the second tune circuit is connected between the second feed point of the coupling arm and ground terminal.
2. antenna system according to claim 1, which is characterized in that the feed circuit includes first day be connected in series with
Wiretap, feed match circuit and feed.
3. antenna system according to claim 2, which is characterized in that first antenna switch include the first control terminal,
First end and second end；The feed match circuit includes the first sub- feed match circuit and the second sub- feed match circuit；
Wherein, the first end is electrically connected with the described first sub- feed match circuit, the second end and the described second sub- feed
Match circuit is electrically connected.
4. antenna system according to claim 1, which is characterized in that first tuning circuit includes be connected in series with
One tuning switch and the first resonance matching circuit.
5. antenna system according to claim 4, which is characterized in that first tuning switch include the second control terminal,
Third end and the 4th end；The first resonance matching circuit includes the first sub- resonance matching circuit and the second sub- resonance matching electricity
Road；
Wherein, the third end is electrically connected with the described first sub- resonance matching circuit, and the 4th end is tuned with second son
Match circuit is electrically connected.
6. antenna system according to claim 4, which is characterized in that first tuning circuit further includes the first tuning member
Part, one end of first tuned cell are electrically connected with first feed point, the other end of first tuned cell and ground connection
End electrical connection.
7. antenna system according to claim 1, which is characterized in that the second tune circuit includes be connected in series with
Two tuning switch and second tune match circuit.
8. antenna system according to claim 7, which is characterized in that second tune switch include third control terminal,
5th end and the 6th end；The second tune match circuit includes the sub- resonance matching circuit of third and the 4th sub- resonance matching electricity
Road；
Wherein, the 5th end is electrically connected with the sub- resonance matching circuit of the third, and the 6th end is tuned with the 4th son
Match circuit is electrically connected.
9. antenna system according to claim 7, which is characterized in that the second tune circuit further includes second tune member
Part, one end of the second tune element are electrically connected with first feed point, the other end of the second tune element and ground connection
End electrical connection.
10. antenna system according to claim 1, which is characterized in that
The uniform end of the resonance arm and the coupling arm is grounded, and the other end is free end, and the free end of the resonance arm and institute
It states the free end of coupling arm relatively and is spaced setting, first feed point is close to the free end of the resonance arm；Second feedback
Point is close to the free end of the coupling arm.
11. a kind of terminal, which is characterized in that include the antenna system as described in any one of claims 1 to 10.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810660458.8A CN108767450B (en) | 2018-06-25 | 2018-06-25 | Antenna system and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810660458.8A CN108767450B (en) | 2018-06-25 | 2018-06-25 | Antenna system and terminal |
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| CN108767450A true CN108767450A (en) | 2018-11-06 |
| CN108767450B CN108767450B (en) | 2021-06-22 |
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| CN201810660458.8A Active CN108767450B (en) | 2018-06-25 | 2018-06-25 | Antenna system and terminal |
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| CN108832267A (en) * | 2018-05-29 | 2018-11-16 | Oppo广东移动通信有限公司 | Electronic device |
| CN109546305A (en) * | 2018-11-14 | 2019-03-29 | 维沃移动通信有限公司 | A kind of communication terminal |
| CN109687106A (en) * | 2018-12-24 | 2019-04-26 | 瑞声科技（南京）有限公司 | The tuning methods of antenna modules, mobile terminal and antenna modules |
| CN109687111A (en) * | 2018-12-29 | 2019-04-26 | 维沃移动通信有限公司 | A kind of antenna structure and communication terminal |
| CN109742512A (en) * | 2018-12-24 | 2019-05-10 | 瑞声科技（南京）有限公司 | Antenna modules and mobile terminal |
| CN109752945A (en) * | 2019-02-19 | 2019-05-14 | 深圳市和盈互联科技有限公司 | A kind of smartwatch tuner |
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| CN109546305A (en) * | 2018-11-14 | 2019-03-29 | 维沃移动通信有限公司 | A kind of communication terminal |
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| CN109752945A (en) * | 2019-02-19 | 2019-05-14 | 深圳市和盈互联科技有限公司 | A kind of smartwatch tuner |
| CN109888461A (en) * | 2019-03-04 | 2019-06-14 | 维沃移动通信有限公司 | A kind of antenna structure and communication terminal |
| CN111146562A (en) * | 2019-05-27 | 2020-05-12 | 广东小天才科技有限公司 | Tunable antenna and communication terminal |
| CN112151960A (en) * | 2019-06-28 | 2020-12-29 | 华为技术有限公司 | Foldable mobile terminal and antenna control method |
| CN110350295A (en) * | 2019-06-30 | 2019-10-18 | RealMe重庆移动通信有限公司 | Wearable electronic equipment |
| EP3832796A1 (en) * | 2019-12-06 | 2021-06-09 | Beijing Xiaomi Mobile Software Co., Ltd. | Antenna structure and electronic device |
| US11374320B2 (en) | 2019-12-06 | 2022-06-28 | Beijing Xiaomi Mobile Software Co., Ltd. | Antenna structure and electronic device |
| EP4106102A4 (en) * | 2020-03-12 | 2023-09-13 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Antenna assembly and electronic device |
| CN113497345A (en) * | 2020-03-18 | 2021-10-12 | 北京小米移动软件有限公司 | Antenna structure and electronic device |
| CN113708093A (en) * | 2020-05-22 | 2021-11-26 | 北京小米移动软件有限公司 | Antenna structure and electronic device |
| CN113708093B (en) * | 2020-05-22 | 2024-02-06 | 北京小米移动软件有限公司 | Antenna structure and electronic equipment |
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| WO2022199307A1 (en) * | 2021-03-26 | 2022-09-29 | Oppo广东移动通信有限公司 | Antenna assembly and electronic device |
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