CN207853906U - A kind of antenna-matching circuit and terminal - Google Patents
A kind of antenna-matching circuit and terminal Download PDFInfo
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- CN207853906U CN207853906U CN201721846868.9U CN201721846868U CN207853906U CN 207853906 U CN207853906 U CN 207853906U CN 201721846868 U CN201721846868 U CN 201721846868U CN 207853906 U CN207853906 U CN 207853906U
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- antenna
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- matching circuit
- lump component
- signal feed
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Abstract
The utility model embodiment discloses a kind of antenna-matching circuit and terminal, wherein circuit include：Antenna body, signal feed point and N number of ground distributing point, any ground distributing point passes through M grounding in parallel in N number of ground distributing point, signal feed o'clock is by one or P branch in parallel is connect with antenna body, and any road in M branch and P branch of parallel connection is provided with one or more lump component locations.It can be seen that, since signal feed point and ground distributing point can connect one or more branches, and each road is both provided with one or more lump component locations, therefore when needing to test the resonant frequency of antenna, selection different branch places the adjustment that resonant frequency can be realized in lump component using combination according to demand, it will need to remake the lengthy process of circuit board re-test to avoid changing circuit design each time in the prior art, the efficiency of antenna circuit test is effectively improved, the R＆D cycle is shortened.
Description
Technical field
The present invention relates to wireless communication field more particularly to a kind of antenna-matching circuit and terminals.
Background technology
With the development of technology, various types of intelligent terminals emerge one after another, and not only function is also increasingly stronger, updates
Speed be also getting faster.In order to win in fierce market competition, requirement of each intelligent terminal manufacturer to properties of product
Also higher and higher, at the same also urgently demand shorten new product R＆D cycle.
Currently, in the Antenna Design and R＆D process of intelligent terminal, for the antenna circuit design scheme being optimal,
Tester needs the resonant frequency to antenna in terminal circuit to test.In the prior art, it is connect with antenna radiation unit
Impedance matching circuit often use the direct-connected design scheme of single channel, i.e. signal feed point and ground distributing point to pass through a branch
It is connected with antenna radiation unit.As can be seen that use circuit design in the prior art, the resonant frequency of terminal antenna without
Method adjusts, if tester has found do not meeting testing standard using the resonant frequency of current circuit design antenna, needs to change
When moving the component in circuit, generally requires after circuit is redesigned and made, could be tested again, this is not only
So that antenna adjustment period it is elongated, debugging it is difficult.
Therefore, there is an urgent need for a kind of antenna-matching circuits at present, to improve the efficiency of antenna circuit test, shorten research and development week
Phase.
Invention content
A kind of antenna-matching circuit of offer of the embodiment of the present invention and terminal, the efficiency for improving antenna circuit test, contracting
The short R＆D cycle.
A kind of antenna-matching circuit of offer in the embodiment of the present invention, including：Antenna body, signal feed point and N number of
Ground distributing point；The radio-frequency module port of the signal feed point and terminal connects, and the input for receiving the radio-frequency module is believed
Number, for described ground distributing point for being grounded, N is more than or equal to 1；
Any ground distributing point in N number of ground distributing point is by M grounding in parallel, in the M branch
One or more lump component locations for placing lump component are provided in any branch, M is more than or equal to 2；
The signal feed o'clock is connect by P branch of a branch or parallel connection with the antenna body, one
Branch or P branch of parallel connection road are provided with one or more lump component locations, and P is more than or equal to 1.
Optionally, the quantity for the lump component locations being arranged in M branch where any ground distributing point is identical,
And the lump component locations in symmetric position are for placing identical lump component.
Optionally, when the signal feed o'clock is connect by a branch with the antenna body, one branch
In lump component locations are not set.
Optionally, when the signal feed point is connect by P branch with the antenna body, in the P branch
The quantity of the lump component locations of setting is identical, and the lump component locations in symmetric position are identical for placing
Lump component.
Optionally, arbitrary phase in the distance between two branches of arbitrary neighborhood and P branch in the M branch
Adjacent the distance between two branches are all higher than 1mm, and are less than 10mm.
Optionally, the lump component is one kind in zero ohms, capacitance, inductance.
Based on same inventive concept, a kind of terminal provided in an embodiment of the present invention includes above-mentioned antenna-matching circuit.
A kind of antenna-matching circuit provided in an embodiment of the present invention includes, and antenna body, signal feed point and N number of feeds
The radio-frequency module port of point, wherein signal feed point and terminal connects, the input signal for receiving radio-frequency module, ground distributing point
For being grounded；Any ground distributing point in N number of ground distributing point is by M grounding in parallel, in M branch in any branch
It is provided with one or more lump component locations for placing lump component；Signal feed o'clock is by a branch or simultaneously
P branch of connection is connect with antenna body, and the P branch road of a branch or parallel connection is provided with one or more lump components
Position.As it can be seen that since signal feed point and ground distributing point can connect one or more branches, one is both provided on each road
Therefore a or multiple lump component locations when needing to test the resonant frequency of antenna, select different branch to make according to demand
Lump component is placed with combination, you can the adjustment for realizing resonant frequency, so as to avoid modification is electric each time in the prior art
Road design will need to remake the lengthy process of circuit board re-test resonant frequency, can effectively improve antenna circuit test
Efficiency shortens the R＆D cycle.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of the first circuit structure of antenna-matching circuit provided in an embodiment of the present invention；
Fig. 2 is a kind of second of circuit structure of antenna-matching circuit provided in an embodiment of the present invention；
Fig. 3 is a kind of the third circuit structure of antenna-matching circuit provided in an embodiment of the present invention；
Fig. 4 is a kind of 4th kind of circuit structure of antenna-matching circuit provided in an embodiment of the present invention；
Fig. 5 is a kind of 5th kind of circuit structure of antenna-matching circuit provided in an embodiment of the present invention；
Fig. 6 is a kind of 6th kind of circuit structure of antenna-matching circuit provided in an embodiment of the present invention；
Fig. 7 is a kind of 7th kind of circuit structure of antenna-matching circuit provided in an embodiment of the present invention；
Fig. 8 is a kind of 8th kind of circuit structure of antenna-matching circuit provided in an embodiment of the present invention；
Fig. 9 is using a kind of the interior of the terminal of second of circuit structure of antenna-matching circuit provided in an embodiment of the present invention
Portion's structure chart；
Figure 10 is a kind of circuit design cloth of second of circuit structure of antenna-matching circuit provided in an embodiment of the present invention
Plate figure；
Figure 11 is that a kind of circuit design of second of circuit structure of antenna-matching circuit provided in an embodiment of the present invention is former
Reason figure；
Figure 12 is that a kind of corresponding antenna of second of circuit structure of antenna-matching circuit provided in an embodiment of the present invention is humorous
Vibration frequency；
Figure 13 is a kind of corresponding antenna effect of second of circuit structure of antenna-matching circuit provided in an embodiment of the present invention
Rate.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
It is described in detail to one step, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
All other embodiment, shall fall within the protection scope of the present invention.
The embodiment of the present invention is described in further detail with reference to the accompanying drawings of the specification.
A kind of antenna-matching circuit provided in the embodiment of the present invention, including antenna body, signal feed point and N number of present
Electric, any ground distributing point in N number of ground distributing point is by M grounding in parallel, any in the M branch
Branch road is provided with one or more lump component locations for placing lump component；The signal feed o'clock passes through one
P a or in parallel branch is connect with the antenna body, and the P branch road of one branch or parallel connection is provided with one
Or multiple lump component locations；N is more than or equal to 1, M and is more than or equal to 2, P more than or equal to 1.
Specifically, the M branch road that any ground distributing point of antenna-matching circuit is connected in the embodiment of the present invention is arranged
The quantity of lump component locations can be identical, can not also be identical.Further, if the M that a certain ground distributing point is connected
The quantity of the lump component locations of a branch road setting is identical, then can also be used to place on symmetrical lump component locations
Identical lump component.
The signal feed point of antenna-matching circuit can be by one or in parallel multiple branches and day in the embodiment of the present invention
Line ontology is connected, if signal feed point is only connected by a branch with antenna body, then collection can be arranged on the branch road
Total component locations can also be not provided with lump component locations, i.e., be connected directly signal feed point with antenna body.
If signal feed point is connected by the branch of multiple parallel connections with antenna body, such as P branch in parallel, then P
The quantity of the lump component locations of branch road setting can be identical, can not also be identical.Further, if P branch road is set
The quantity for the lump component locations set is identical, then can also be used to place identical lump on symmetrical lump component locations
Component.
In the embodiment of the present invention, those skilled in the art can according to actual needs it is connected to each ground distributing point M branch
Any two adjacent legs in the distance between any two adjacent legs and the connected P branch of signal feed point in road
The distance between be specifically arranged, optionally, can be by the distance between any two adjacent legs and P in M branch
The distance between any two adjacent legs are set greater than 1mm in a branch, and less than between 10mm.
It should be noted that in antenna-matching circuit in the embodiment of the present invention the quantity of distributing point, each feed
The quantity for the lump component being arranged in the point quantity of ground branch, each branch can be by those skilled in the art according to reality
It needs specifically to be arranged, the present invention is not particularly limited this.
Similarly, the number for the branch that signal feed point is connect with antenna body in the antenna-matching circuit in the embodiment of the present invention
The quantity for the lump component being arranged in amount, each branch also can be specifically arranged according to actual needs by those skilled in the art,
The present invention is not particularly limited this.
The antenna-matching circuit provided in the embodiment of the present invention can there are many possible specific implementation, Fig. 1 examples
Property shows a kind of the first circuit structure of antenna-matching circuit provided in an embodiment of the present invention, as shown in Figure 1, the first is electric
Antenna-matching circuit in line structure includes antenna body A1000, a signal feed point F1000 and two ground distributing points
G1000 and G2000.
Wherein, each ground distributing point is by two groundings in parallel, and each branch road is both provided with two use
In the lump component locations for placing lump component；Signal feed point is connect by two branches in parallel with antenna body,
And two branch roads are both provided with two placement lump component locations placed for placing lump component.
Fig. 2 illustrates a kind of second of circuit structure of antenna-matching circuit provided in an embodiment of the present invention, such as
Shown in Fig. 2, in second of circuit structure antenna-matching circuit equally include antenna body A1000, signal feed point F1000 and
Two ground distributing point G1000 and G2000.Compared with the first circuit structure, difference lies in signals in second of circuit structure to present
Electricity point is connected directly by a branch with antenna body, and is not provided in the branch and be can be used for placing lump component
Lump component locations.
Fig. 3 illustrates a kind of the third circuit structure of antenna-matching circuit provided in an embodiment of the present invention, such as
Shown in Fig. 3, in the third circuit structure antenna-matching circuit equally include antenna body A1000, signal feed point F1000 and
Two ground distributing point G1000 and G2000, and signal feed point is connect by two branches in parallel with antenna body, each
Distributing point passes through two groundings in parallel.Compared with the first circuit structure, difference lies in each ground distributing points to connect
Branch and only there are one lump component locations for setting for signal feed point connected branch road.
Fig. 4 illustrates a kind of the 4th kind of circuit structure of antenna-matching circuit provided in an embodiment of the present invention, such as
Shown in Fig. 4, in the 4th kind of circuit structure antenna-matching circuit equally include antenna body A1000, signal feed point F1000 and
Two ground distributing point G1000 and G2000, and each ground distributing point passes through two groundings in parallel, each ground distributing point
Only there are one lump component locations for setting for connected branch road.Compared with the third circuit structure, difference lies in the 4th kind
Signal feed point is connected directly with antenna body by a branch in circuit structure, and branch road is not provided with lump member
Device position.
Fig. 5 illustrates a kind of the 5th kind of circuit structure of antenna-matching circuit provided in an embodiment of the present invention, such as
Shown in Fig. 5, antenna-matching circuit includes antenna body A1000, signal feed point F1000, Yi Jiyi in the 5th kind of circuit structure
A ground distributing point G1000.Signal feed point F1000 is connected by two branches in parallel with antenna body, and each branch road
There are two lump component locations for setting, and ground distributing point G1000 is by two groundings in parallel, and each branch road is arranged
There are two lump component locations.
Fig. 6 illustrates a kind of the 6th kind of circuit structure of antenna-matching circuit provided in an embodiment of the present invention, such as
Shown in Fig. 6, antenna-matching circuit includes antenna body A1000, signal feed point F1000, Yi Jiyi in the 6th kind of circuit structure
A ground distributing point G1000, ground distributing point G1000 are by two groundings in parallel, and each branch road is both provided with two
Lump component locations.Compared with the 5th kind of circuit structure, in the 6th kind of circuit structure signal feed o'clock by a branch with
Antenna body is connected directly, and branch road is not provided with lump component locations.
Fig. 7 illustrates a kind of the 7th kind of circuit structure of antenna-matching circuit provided in an embodiment of the present invention, such as
Shown in Fig. 7, antenna-matching circuit includes antenna body A1000, signal feed point F1000, Yi Jiyi in the 7th kind of circuit structure
A ground distributing point G1000.Signal feed point F1000 is connected by two branches in parallel with antenna body A1000, and each branch
Lump component locations there are one being respectively provided on the road.Ground distributing point G1000 is by two groundings in parallel, and each branch
On be respectively provided with there are one lump component locations.
Fig. 8 illustrates a kind of the 8th kind of circuit structure of antenna-matching circuit provided in an embodiment of the present invention, such as
Shown in Fig. 8, antenna-matching circuit includes antenna body A1000, signal feed point F1000, Yi Jiyi in the 8th kind of circuit structure
A ground distributing point G1000.Ground distributing point G1000 is by two groundings in parallel, and each branch road is both provided with one
Lump component locations.Compared with the 7th kind of circuit structure, signal feed point F1000 passes through a branch in the 8th kind of circuit structure
Road is connected with antenna body, and branch road is not provided with lump component locations.
It how is described in detail to being provided in the embodiment of the present invention with reference to the circuit structure shown in Fig. 1 to Fig. 8
Antenna-matching circuit test antenna frequencies.
Determine that all branches to be tested use combination using combination, any of which branch in antenna-matching circuit first
Including the connected at least one branch of signal feed point and the connected at least one branch of each ground distributing point.For example, scheming
In the first circuit structure shown in 1, if two branches difference that signal feed point F1000 is connected with antenna body A1000
It is F1 and F2, two branches of ground distributing point G1000 ground connection are G10 and G11, two branch of ground distributing point G2000 ground connection respectively
Road is G20 and G21 respectively, then including that 45 kinds of branches to be tested as shown in the table use altogether in the first circuit structure
Combination：
Table 1
For any branch in branch combinations to be tested using combination, each branch that can include using combination in the branch
Lump component is placed in road, and to constitute the branch using corresponding antenna-matching circuit is combined, then test uses the branch
When road is using the antenna-matching circuit combined, the resonant frequency of antenna body.If it was found that being used when combination days using a certain branch
The resonant frequency of line ontology does not meet the frequency of testing standard or desired design, then in only needing to change the branch using combining
The lump component of each branch road, or place lump component using combination using other branches and continue test i.e.
Can, without redesigning circuit structure, making test circuit plate.
In the embodiment of the present invention, the lump component can be a plurality of types of lump members such as zero ohms, capacitance, inductance
Device.For any branch in a certain circuit structure using combination, in the branch using being placed on each road in combination
Which kind of type, parameter value are that how many lump components can be determined by those skilled in the art according to specific circuit design
Fixed, the present invention is not particularly limited this.
By being tested using corresponding resonant frequency is combined all branches in antenna-matching circuit, antenna can be obtained
The adjusting range of the resonant frequency of the antenna body of match circuit, to therefrom determine the optimum resonance frequency for meeting design requirement
Rate and the corresponding branch of optimum resonant frequency use combination.
It should be noted that the antenna-matching circuit method provided in the embodiment of the present invention is useful in the research and development of the products such as terminal
In the process, using the technical solution in the embodiment of the present invention, those skilled in the art need to only design and make a kind of circuit structure
Antenna-matching circuit, carried out using the resonant frequency of the antenna body of combination by all branches for including to the circuit structure
The corresponding branch of optimum resonant frequency is determined as the final realization side of the circuit structure of antenna-matching circuit by test using combination
Case tests resonant frequency, modification antenna-matching circuit repeatedly after designing and producing a specific antenna-matching circuit
Circuit structure to reach antenna measurement requirement.
Fig. 9 is using a kind of the interior of the terminal of second of circuit structure of antenna-matching circuit provided in an embodiment of the present invention
Portion's structure chart, as shown in figure 9, ANT-1 is the Main Branches of antenna, ANT-F is signal feed point, ANT-G1 and ANT-G2 difference
For positioned at two ground distributing points of signal feed point side.
The antenna-matching circuit of second of circuit structure used by the exemplary terminals given described in Fig. 9 of Figure 10
Circuit design fabric swatch figure, as shown in Figure 10, lump component G121 and G122 series connection with ground distributing point ANT-G1 as connecting
One branch, lump component G111 and G112 series connection is as another branch being connect with ground distributing point ANT-G1, lump member device
Part G221 and G222 series connection are made as a branch being connect with ground distributing point ANT-G2, lump component G211 and G212 series connection
For another branch being connect with ground distributing point ANT-G2.
Figure 11 is exemplary to be gone out to give circuit design fabric swatch figure shown in Figure 10 corresponding circuit design principle figure, figure Figure 12 institutes
Show, the lump component being arranged at two branch road symmetric positions of ground distributing point ANT-G1 and ground distributing point ANT-G2 ground connection
Identical, i.e., G121 is identical as G111, and G111 is identical as G112, and G221 is identical as G211, and G222 is identical as G212.
Figure 12 and Figure 13 is exemplary respectively to give the corresponding antenna resonant frequency of circuit shown in Figure 11 and antenna
Efficiency, as shown in Figure 12 and Figure 13, the branch that four kinds different in second of circuit structure of antenna-matching circuit use combination pair
The center resonant frequency for the antenna answered is significantly different, therefore, is come using combination by using the different branch of antenna-matching circuit
The resonant frequency of antenna is adjusted, and antenna efficiency is kept to be basically unchanged.
As shown in the above, a kind of antenna-matching circuit provided in an embodiment of the present invention includes antenna body, signal feedback
Electricity point and N number of ground distributing point, the wherein radio-frequency module port of signal feed point and terminal connects, for receiving the defeated of radio-frequency module
Enter signal, ground distributing point is for being grounded；For any ground distributing point in N number of ground distributing point by M grounding in parallel, M is a
One or more lump component locations for placing lump component are provided in branch in any branch；Signal feed point
It is connect with antenna body by P branch of a branch or parallel connection, the P branch road of a branch or parallel connection is provided with one
Or multiple lump component locations.As it can be seen that since signal feed point and ground distributing point can connect one or more branches, each
Branch road is both provided with one or more lump component locations, therefore, when needing to test the resonant frequency of antenna, according to need
Selection different branch is asked to place lump component using combination, you can the adjustment for realizing resonant frequency, so as to avoid existing skill
Changing circuit design in art each time will need to remake the lengthy process of circuit board re-test resonant frequency, can effectively carry
The efficiency of high antenna circuit test, shortens the R＆D cycle.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (7)
1. a kind of antenna-matching circuit, which is characterized in that the antenna-matching circuit includes antenna body, signal feed point and N
The radio-frequency module port of a ground distributing point, the signal feed point and terminal connects, the input for receiving the radio-frequency module
Signal, for described ground distributing point for being grounded, N is more than or equal to 1；
Any ground distributing point in N number of ground distributing point is by M grounding in parallel, any in the M branch
One or more lump component locations for placing lump component are provided in branch, M is more than or equal to 2；
The signal feed o'clock is connect by P branch of a branch or parallel connection with the antenna body, one branch
Or P branch road in parallel is provided with one or more lump component locations, P is more than or equal to 1.
2. antenna-matching circuit according to claim 1, which is characterized in that M branch where any ground distributing point
The quantity for the lump component locations being arranged in road is identical, and the lump component locations in symmetric position are for placing phase
Same lump component.
3. antenna-matching circuit according to claim 1, which is characterized in that pass through a branch in the signal feed o'clock
When being connect with the antenna body, lump component locations are not set in one branch.
4. antenna-matching circuit according to claim 1, which is characterized in that pass through P branch in the signal feed point
When being connect with the antenna body, the quantity for the lump component locations being arranged in the P branch is identical, and in symmetrical
The lump component locations of position are for placing identical lump component.
5. antenna-matching circuit according to any one of claim 1 to 4, which is characterized in that arbitrary in the M branch
The distance between two branches of arbitrary neighborhood are all higher than 1mm in the distance between two adjacent branches and P branch,
And it is less than 10mm.
6. antenna-matching circuit according to any one of claim 1 to 4, which is characterized in that the lump component is
One kind in zero ohms, capacitance, inductance.
7. a kind of terminal, which is characterized in that the terminal includes such as antenna match according to any one of claims 1 to 6
Circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721846868.9U CN207853906U (en) | 2017-12-26 | 2017-12-26 | A kind of antenna-matching circuit and terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721846868.9U CN207853906U (en) | 2017-12-26 | 2017-12-26 | A kind of antenna-matching circuit and terminal |
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| CN207853906U true CN207853906U (en) | 2018-09-11 |
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| CN201721846868.9U Active CN207853906U (en) | 2017-12-26 | 2017-12-26 | A kind of antenna-matching circuit and terminal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108039922A (en) * | 2017-12-26 | 2018-05-15 | 西安易朴通讯技术有限公司 | A kind of adjustment method of antenna frequencies, antenna-matching circuit and terminal |
| CN112579631A (en) * | 2020-12-28 | 2021-03-30 | 云南电网有限责任公司电力科学研究院 | Customized development method for intelligent sensing terminal of Internet of things |
-
2017
- 2017-12-26 CN CN201721846868.9U patent/CN207853906U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108039922A (en) * | 2017-12-26 | 2018-05-15 | 西安易朴通讯技术有限公司 | A kind of adjustment method of antenna frequencies, antenna-matching circuit and terminal |
| CN112579631A (en) * | 2020-12-28 | 2021-03-30 | 云南电网有限责任公司电力科学研究院 | Customized development method for intelligent sensing terminal of Internet of things |
| CN112579631B (en) * | 2020-12-28 | 2023-11-17 | 云南电网有限责任公司电力科学研究院 | Customization development method for intelligent perception terminal of Internet of things |
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