CN106033836A - Monopole - Google Patents
Monopole Download PDFInfo
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- CN106033836A CN106033836A CN201510110335.3A CN201510110335A CN106033836A CN 106033836 A CN106033836 A CN 106033836A CN 201510110335 A CN201510110335 A CN 201510110335A CN 106033836 A CN106033836 A CN 106033836A
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- radiation branch
- unipole antenna
- feed
- radiation
- connecting portion
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Abstract
The invention discloses a monopole, comprising a grounding face and a radiation main body; the radiation main body comprises a feed-in connection part, a first radiation branch, a second radiation branch and a third radiation branch; the feed-in connection part is adjacent to the grounding face; the first radiation branch is connected to one side of the feed-in connection part and extends along a first direction; the first radiation branch comprises a metal patch block, and the width of the metal patch block is decreased toward the first direction; the second radiation branch is connected to the side of the feed-in connection part and, and, compared with the first radiation branch, is closer to the grounding face; the second radiation branch extends along the first direction; the third radiation branch is connected to another side of the feed-in connection part and extends along a second direction of the first direction which is counter to the first direction.
Description
Technical field
The present invention relates to a kind of antenna, and particularly relate to a kind of multi-band-monopol-antenna.
Background technology
Along with the development of mechanics of communication, wireless communication apparatus, such as notebook computer, mobile phone, nothing
Line access points (Access Point, AP) etc., often need possess the ability operating in different frequency bands.For in response to
The wireless data transmission of different frequency bands, traditionally uses wide frequency antenna or multifrequency antenna as device
Radio-frequency front-end element.
But, tradition multifrequency antenna in design and is difficult to make adaptive adjustment for each operation frequency range,
And low frequency bandwidth is the most limited.
Therefore, how to provide a kind of adaptability adjust multiband and have the antenna of good antenna characteristic,
It it is one of problem of being endeavoured of current industry.
Summary of the invention
It is an object of the invention to provide a kind of multi-band-monopol-antenna, to solve the problems referred to above.
According to a kind of unipole antenna proposed by the invention, this unipole antenna is printed on a substrate, and wraps
Include a ground plane and a radiating principal.This radiating principal includes a feed-in connecting portion, one first radiation
Portion, one second radiation branch and one the 3rd radiation branch.This feed-in connecting portion is adjacent to this ground plane.
This first radiation branch connects a side of this feed-in connecting portion and extends along a first direction, and this is first years old
Radiation branch is responsible for one first operation frequency of this unipole antenna.This first radiation branch includes that a metal is mended
Block, the width of this metal patch reduces towards this first direction.This second radiation branch connects this feed-in and connects
This side in portion and relatively this first radiation branch adjacent to this ground plane, this second radiation branch along this first
Direction extends, and is responsible for one second operation frequency of this unipole antenna.3rd radiation branch connects this feedback
Enter another side of connecting portion, and extend along a second direction reverse with this first direction, the 3rd
Radiation branch is responsible for one the 3rd operation frequency of this unipole antenna.Wherein this second operation frequency higher than this
Three operation frequencies, and the 3rd operation frequency is higher than this first operation frequency.
More preferably understand in order to the above-mentioned and other aspect of the present invention is had, preferred embodiment cited below particularly,
And the accompanying drawing appended by coordinating, it is described in detail below:
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the unipole antenna of one embodiment of the invention；
Fig. 2 A is the radiating principal the showing of current path in the first radiation frequency of one embodiment of the invention
It is intended to；
Fig. 2 B is the radiating principal the showing of current path in the second radiation frequency of one embodiment of the invention
It is intended to；
Fig. 2 C is the radiating principal the showing of current path in the 3rd radiation frequency of one embodiment of the invention
It is intended to；
Fig. 3 A is the schematic diagram of the radiating element of another embodiment of the present invention；
Fig. 3 B is the schematic diagram of the radiating element of further embodiment of this invention；
Fig. 4 A is the schematic diagram of the radiation of further embodiment of this invention；
Fig. 4 B is the schematic diagram of the radiating element of further embodiment of this invention；
Fig. 5 A is the side view of the unipole antenna of one embodiment of the invention；
Fig. 5 B is the side view of the unipole antenna of another embodiment of the present invention；
Fig. 6 is the measurement figure of the reflection coefficient of the unipole antenna of one embodiment of the invention；
Fig. 7 is the simulation drawing of the radiation efficiency of the unipole antenna of one embodiment of the invention.
Symbol description
100: unipole antenna
102: ground plane
104,304,304 ', 404,404 ': radiating principal
106: feed-in connecting portion
108, the 308,308 ': the first radiation branch
110, the 410,410 ': the second radiation branch
112: the three radiation branches
114,314,314 ': metal patch
116: signal feed-in district
D1, D2: direction
FP: load point
CB: cable
R1, R2, R3: current path
M1, M2: metal level
DL: dielectric layer
Detailed description of the invention
Embodiment set forth below is described in detail, and embodiment, only in order to illustrate as example, can't limit
The scope that the contracting present invention to be protected.Additionally, the accompanying drawing in embodiment omits unnecessary element, with clear
The technical characterstic of the display present invention.
Refer to Fig. 1, it illustrates the schematic diagram of the unipole antenna 100 according to one embodiment of the invention.
As it is shown in figure 1, unipole antenna 100 includes ground plane 102 and radiating principal 104.Unipole antenna 100
It is printed on a substrate.Radiating principal 104 and ground plane 102 may be disposed at the surface, the same side of this substrate,
Or it is respectively arranged at the both side surface of this substrate.It is said that in general, for avoid damage to unipole antenna 100
Characteristic, radiating principal 104 can't arrange other metal patterns or element in projecting the substrate regions at place.
Radiating principal 104 includes that feed-in connecting portion 106, first radiates branch 108, second and radiates branch
110 and the 3rd radiate branch 112.Feed-in connecting portion 106 is adjacent to ground plane 102, but not with ground connection
Face 102 is joined directly together.In one embodiment, feed-in connecting portion 106 wraps adjacent to one end of ground plane 102
Including the signal feed-in district 116 extended towards direction D2, this signal feed-in district 116 is in order to receive radio frequency letter
Number.For example, one 50 Omega cable CB can be welded on the load point in signal feed-in district 116
FP (is such as positioned at the upper right corner in signal feed-in district 116), directly to believe unipole antenna 100 feed-in radio frequency
Number.But the present invention is not limited to this, unipole antenna 100 also can be by the transmission line being printed on substrate
Or other existing signal transmission component is to receive radiofrequency signal.In this embodiment, by setting up towards direction
The signal feed-in district 116 that D2 extends, in feed-in connecting portion 106, can be effectively improved the resistance of unipole antenna 100
Anti-coupling.
First radiation branch 108 connects a first side of feed-in connecting portion 106 and along direction D1 (court
Below Fig. 1) extend.First radiation branch 108 is mainly responsible for one first operation frequency of unipole antenna 100
Rate.In one embodiment, in multiple operation frequencies that unipole antenna 100 is excited, the first operation frequency
Rate is rather low-frequency.By adjusting the length of the first radiation branch 108, this first operation corresponding can be adjusted
The position of frequency.It is said that in general, the length that load point FP to first radiates the end of branch 108 can be designed
The quarter-wave of degree the most slightly first operation frequency.
In one embodiment, the first radiation branch 108 can be by bending to reduce integrated antenna size.As
Shown in Fig. 1, the end of the first radiation branch 108 bends upwards (direction D2) towards ground plane 102.Can manage
Solving, the first radiation branch 108 also can increase overall current path also by other bending mode
Reduce antenna size.
First radiation branch 108 includes metal patch 114, and its length extended towards direction D1 is less than the
The length that one radiation branch 108 extends towards direction D1, arranges and is positioned adjacent to being somebody's turn to do of feed-in connecting portion 106
First side the end extended towards direction D1 away from the first radiation branch 108.As it is shown in figure 1, it is golden
The width belonging to patch 114 reduces towards direction D1, and the length of metal patch 114 is more than the second radiation
The length in portion 110.Configured by this, the current path towards the first radiation branch 108 can be increased, enter
And increase antenna operation frequency range.Metal patch 114 can also be used for adjusting the impedance matching of unipole antenna 100,
Unipole antenna 100 is made to have relatively low reflection loss.
Second radiation branch 110 connects this first side and the relatively first radiation branch of feed-in connecting portion 106
108 adjacent to ground plane 102.It is to say, the second radiation branch 110 and the first radiation branch 108 are all
It is connected to the same side of feed-in connecting portion 106.Second radiation branch 110 extends along direction D1, and
It is responsible for one second operation frequency of unipole antenna 100.In one embodiment, swashed at unipole antenna 100
In the multiple operation frequencies sent out, the second operation frequency is relative high frequency.By adjusting the second radiation branch 110
Length, can the corresponding position adjusting this second operation frequency.It is said that in general, load point FP can be designed
Quarter-wave to length the most slightly second operation frequency of the second end radiating branch 110.
In one embodiment, the width of the second radiation branch 110 increases towards direction D1.As it is shown in figure 1,
In second radiation branch 110, the width of latter end width relatively its leading portion (with feed-in connecting portion 106 joint)
Degree also wants width.In this embodiment, increase towards direction D1, no when the width of the second radiation branch 110
Only can be effectively increased the frequency range of the second operation frequency of unipole antenna 100, more can compensate for the second radiation branch
The electric capacity of 110 pairs of ground planes 102, inductive effect, and then improve the impedance matching of antenna.
3rd radiation branch 112 connects a second side of feed-in connecting portion 106, second side and first
The corresponding setting of side.It is to say, the 3rd radiation branch 112 with first and second radiate branch 108,
110 lay respectively at the not homonymy connecting feed-in connecting portion 106.As it is shown in figure 1, the 3rd radiation branch 112
Extend along the direction D2 reverse with direction D1.In one embodiment, the first radiation branch 108 with
What the 3rd radiation branch 112 connected feed-in connecting portion 106 is positioned adjacent to feed-in connecting portion 106 away from ground connection
The other end in face 102 so that feed-in connecting portion 106, first radiates branch 108 and the 3rd radiation
Portion 112 is set to T-shaped, wherein the vertical feed-in of the first radiation branch 108 and the 3rd radiation branch 112
Connecting portion 106, and the first radiation branch 108 is oppositely arranged with 180 degree with the 3rd radiation branch 112.
3rd radiation branch 112 is responsible for one the 3rd operation frequency of unipole antenna 100.In one embodiment,
In multiple operation frequencies that unipole antenna 100 is excited, the 3rd operation frequency is relative intermediate frequency.Pass through
Adjust the length of the 3rd radiation branch 112, can the corresponding position adjusting the 3rd operation frequency.General and
Speech, can design length the most slightly the 3rd operation frequency that load point FP to the 3rd radiates the end of branch 112
The quarter-wave of rate.
In one embodiment, the 3rd radiation branch 112 can be by bending to reduce integrated antenna size.As
Shown in Fig. 1, the end of the 3rd radiation branch 112 bends towards ground plane 102.It will be appreciated that the 3rd
Radiation branch 112 also can increase overall current path by other bending mode and reduce antenna chi
Very little.
Refer to Fig. 2 A, Fig. 2 B, Fig. 2 C.Fig. 2 A illustrates the radiation according to one embodiment of the invention
Main body DL104 is in the schematic diagram of the current path R1 of the first radiation frequency.Fig. 2 B illustrates according to this
The radiating principal 104 of a bright embodiment is in the schematic diagram of the current path R2 of the second radiation frequency.Figure
2C illustrates the radiating principal 104 according to one embodiment of the invention in the current path of the 3rd radiation frequency
The schematic diagram of R3.
Described in brought forward, owing to the first radiation branch 108 is mainly responsible for exciting unipole antenna 100 in the first behaviour
The radiation mode of working frequency, therefore the current path R1 of end of load point FP to first radiation branch 108
The quarter-wave of length the most slightly first operation frequency.Similarly, due to the second radiation branch 110
Mainly be responsible for exciting unipole antenna 100 in the radiation mode of the second operation frequency, therefore load point FP to
The four of length the most slightly second operation frequency of the current path R2 of the end of two radiation branches 110/
One wavelength.Similarly, mainly it is responsible for exciting unipole antenna 100 in the 3rd due to the 3rd radiation branch 112
The radiation mode of operation frequency, therefore the current path of end of load point FP to the 3rd radiation branch 112
The quarter-wave of the length of R3 the most slightly the 3rd operation frequency.In the present embodiment, the second operation
Frequency is higher than the 3rd operation frequency, and the 3rd operation frequency is higher than the first operation frequency.Therefore, electric current road
The length of footpath R1 is the longest, and current path R3 takes second place, and current path R2 is the shortest.
Fig. 3 A illustrates the schematic diagram of the radiating element 304 according to another embodiment of the present invention.Radiating element
304 main difference is that with the radiating element 104 of Fig. 1: the metal patch 314 of the first radiation branch 308
Width reduce towards direction D1 with N rank, wherein N is the positive integer more than 2.As shown in Figure 3A,
The width of metal patch 314 reduces towards direction D1 with 4 rank.Compared to Fig. 1, metal patch 114
Width reduces towards direction D1 with 2 rank.But the present invention is not limited thereto, as long as the of radiating element
The width of the metal patch of one radiation branch is gradually reduced towards direction D1 with staged, all belongs to present invention essence
The category of god.
Fig. 3 B illustrates the schematic diagram of the radiating element 304 ' according to further embodiment of this invention.Fig. 3 B's
Radiating element 304 ' main difference is that with the radiating element 104 of Fig. 1: the gold of the first radiation branch 308 '
The width belonging to patch 304 ' reduces progressively towards direction D1 is smooth.As shown in Figure 3 B, metal patch 304 '
A side be a smoothed curve having radian.In another embodiment, a side of metal patch 304 '
It can be a skew lines.
Fig. 4 A illustrates the schematic diagram of the radiating element 404 according to further embodiment of this invention.Fig. 4 A's
Radiating element 404 main difference is that with the radiating element 104 of Fig. 1: the width of the second radiation branch 410
Spending and increase towards direction D1 with M rank, wherein M is the positive integer more than 1.As shown in Figure 4 A, second
The width of radiation branch 410 increases towards direction D1 with 3 rank.In comparison, the second radiation in Fig. 1
The width in portion 110 increases towards direction D1 with 2 rank.But the present invention is not limited thereto, if radiation
The width of the second radiation branch of unit is gradually increased towards direction D1 with staged, all belongs to present invention spirit
Category.
Fig. 4 B illustrates the schematic diagram of the radiating element 404 ' according to further embodiment of this invention.Fig. 4 B's
Radiating element 404 ' main difference is that with the radiating element 104 of Fig. 1: the width of the second radiation branch 410
Degree smoothly increases towards direction D1.As shown in Figure 4 B, a side of the second radiation branch 410 is one
Skew lines.In another embodiment, a side of the second radiation branch 410 can be one to have the smooth of radian
Curve.
It is understood that adjusted by combining above-described embodiment, modified produced one pole sky
Line is also covered by the category of spirit of the present invention.For example, the metal patch 114 of unipole antenna 100 can
Replace with metal patch 314, the 314' of Fig. 3 A or Fig. 3 B, and the second radiation branch 110 can be with Fig. 4 A
Or the second radiation branch 410,410 ' of Fig. 4 B replaces.
Refer to Fig. 5 A and Fig. 5 B.Fig. 5 A illustrates the unipole antenna according to one embodiment of the invention
Side view.Fig. 5 B illustrates the side view of the unipole antenna according to another embodiment of the present invention.
Described in brought forward, the unipole antenna of the embodiment of the present invention is printed on a substrate, wherein radiating principal with
Ground plane may be disposed at the surface, the same side of this substrate, or is respectively arranged at the both side surface of this substrate.
Fig. 5 A i.e. pair of lamina plate structure, wherein the radiating principal of unipole antenna is such as printed on metal level M1.
It is dielectric layer DL below metal level M1.Fig. 5 B is then a three ply board structure, the wherein spoke of unipole antenna
Penetrating main body and be such as printed on metal level M1, ground plane is such as printed on metal level M2, and dielectric layer DL
It is then between metal level M1 and metal level M2.As it was previously stated, when using three ply board structure, spoke
Generally will not print metal patterns or element is set in penetrating the substrate regions at main body projection place.
Fig. 6 illustrates the measurement figure of the reflection coefficient (S11) of the unipole antenna according to one embodiment of the invention.
As seen from Figure 6, in the frequency range of 724MHz～960MHz, reflection coefficient is the most about at below-5dB；
In the frequency range of 1.17GHz～2.17GHz, reflection coefficient is the most about at below-14dB；?
In the frequency range of 2.17GHz～2.7GHz, reflection coefficient is the most about at below-12dB.
Fig. 7 illustrates the simulation drawing of the radiation efficiency of the unipole antenna according to one embodiment of the invention.By scheming
7 can be seen that, the unipole antenna of the embodiment of the present invention has three operational frequency bands, and it all has good spoke
Penetrate efficiency.
In sum, the unipole antenna of the embodiment of the present invention not only possesses independent frequency band Regulation mechanism, also
Good impedance matching and operation frequency range can be provided.Additionally, the unipole antenna of the embodiment of the present invention can be grasped
Make independent printed circuit board (PCB) or with use of systematically arranging in pairs or groups, can conveniently be applied to different systems.
Although disclosing the present invention in conjunction with preferred embodiment above, but it being not limited to the present invention.
Persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention,
Can be used for a variety of modifications and variations.Therefore, protection scope of the present invention should be with the claim institute enclosed
That defines is as the criterion.
Claims (10)
1. a unipole antenna, is printed on a substrate, including:
Ground plane；And
Radiating principal, including:
Feed-in connecting portion, is adjacent to this ground plane；
First radiation branch, connects a side of this feed-in connecting portion, and prolongs along a first direction
Stretching, this first radiation branch is responsible for one first operation frequency of this unipole antenna, this first radiation branch bag
Including: metal patch, the width of this metal patch reduces towards this first direction；
Second radiation branch, this side and relatively this first radiation branch of connecting this feed-in connecting portion are adjacent
This ground plane nearly, this second radiation branch extends along this first direction, and is responsible for the one of this unipole antenna
Second operation frequency；And
3rd radiation branch, connects another side of this feed-in connecting portion, and along with this first party
Extending to a reverse second direction, the 3rd radiation branch is responsible for one the 3rd operation frequency of this unipole antenna
Rate；Wherein this second operation frequency is higher than the 3rd operation frequency, and the 3rd operation frequency higher than this
One operation frequency.
2. unipole antenna as claimed in claim 1, wherein this feed-in connecting portion, this first radiation branch
And the 3rd radiation branch be set to T-shaped, wherein this first radiation branch and the 3rd radiation branch
The position of this feed-in connecting portion vertical is remote from one end of this ground plane, and this first radiation branch with this
Three radiation branches are oppositely arranged with 180 degree.
3. unipole antenna as claimed in claim 1, wherein the width of this metal patch is towards this first direction
Smooth and reduce progressively.
4. unipole antenna as claimed in claim 1, wherein the width of this metal patch is towards this first direction
It is gradually reduced with staged.
5. unipole antenna as claimed in claim 1, wherein the length of this metal patch is more than this second spoke
Penetrate the length of branch.
6. unipole antenna as claimed in claim 1, wherein this metal patch is towards this feed-in connecting portion neighbouring
This side and away from this end of extending towards this first direction of the first radiation branch.
7. unipole antenna as claimed in claim 1, wherein the width of this second radiation branch towards this first
Direction increases.
8. unipole antenna as claimed in claim 1, wherein feed-in connecting portion is adjacent to one end of this ground plane
Including the signal feed-in district extended towards this second direction, this signal feed-in district is in order to receive radiofrequency signal.
9. unipole antenna as claimed in claim 1, wherein this radiating principal and this ground plane are arranged at this
The surface, the same side of substrate.
10. unipole antenna as claimed in claim 1, wherein this radiating principal sets respectively with this ground plane
It is placed in the both side surface of this substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510110335.3A CN106033836A (en) | 2015-03-13 | 2015-03-13 | Monopole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510110335.3A CN106033836A (en) | 2015-03-13 | 2015-03-13 | Monopole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106033836A true CN106033836A (en) | 2016-10-19 |
Family
ID=57150629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510110335.3A Pending CN106033836A (en) | 2015-03-13 | 2015-03-13 | Monopole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106033836A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW568389U (en) * | 2003-05-09 | 2003-12-21 | Hon Hai Prec Ind Co Ltd | Multi-band printed monopole antenna |
| US20040227683A1 (en) * | 2003-02-26 | 2004-11-18 | Caimi Frank M. | Integrated front end antenna |
| CN1862878A (en) * | 2005-05-10 | 2006-11-15 | 夏普株式会社 | Antenna |
| CN101102008A (en) * | 2006-07-04 | 2008-01-09 | 富士康(昆山)电脑接插件有限公司 | Multi-frequency antenna |
| EP2037532A1 (en) * | 2007-09-14 | 2009-03-18 | ASUSTeK Computer Inc. | Flat dual-band antenna |
| US20130063311A1 (en) * | 2011-09-09 | 2013-03-14 | Cheng Uei Precision Industry Co., Ltd. | Multiband printed antenna |
| CN103762414A (en) * | 2014-01-10 | 2014-04-30 | 瑞声光电科技(常州)有限公司 | Antenna |
-
2015
- 2015-03-13 CN CN201510110335.3A patent/CN106033836A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040227683A1 (en) * | 2003-02-26 | 2004-11-18 | Caimi Frank M. | Integrated front end antenna |
| TW568389U (en) * | 2003-05-09 | 2003-12-21 | Hon Hai Prec Ind Co Ltd | Multi-band printed monopole antenna |
| CN1862878A (en) * | 2005-05-10 | 2006-11-15 | 夏普株式会社 | Antenna |
| CN101102008A (en) * | 2006-07-04 | 2008-01-09 | 富士康(昆山)电脑接插件有限公司 | Multi-frequency antenna |
| EP2037532A1 (en) * | 2007-09-14 | 2009-03-18 | ASUSTeK Computer Inc. | Flat dual-band antenna |
| US20130063311A1 (en) * | 2011-09-09 | 2013-03-14 | Cheng Uei Precision Industry Co., Ltd. | Multiband printed antenna |
| CN103762414A (en) * | 2014-01-10 | 2014-04-30 | 瑞声光电科技(常州)有限公司 | Antenna |
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Application publication date: 20161019 |