CN101740866B - Multi-frequency antenna for wireless communication device - Google Patents
Multi-frequency antenna for wireless communication device Download PDFInfo
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- CN101740866B CN101740866B CN2008101811910A CN200810181191A CN101740866B CN 101740866 B CN101740866 B CN 101740866B CN 2008101811910 A CN2008101811910 A CN 2008101811910A CN 200810181191 A CN200810181191 A CN 200810181191A CN 101740866 B CN101740866 B CN 101740866B
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Abstract
The invention relates to a multi-frequency antenna for a wireless communication device, which comprises a grounding assembly, a first radiation assembly, a connecting assembly, a feed-in assembly, a short-circuit assembly and a second radiation assembly. The grounding assembly is grounded; the connecting assembly comprises a first end and a second end, wherein the first end is coupled with the first radiation assembly; the feed-in assembly is coupled between the second end of the connecting assembly and the grounding assembly and is used for receiving a feed-in signal; the short-circuit assembly is coupled between the second end of the connecting assembly and the grounding assembly; and the second radiation assembly is coupled with the short-circuit assembly. A single antenna of the invention covers different frequency bands required by different wireless communication devices so as to fit the trend of the reduction of the volume of portable wireless communicators.
Description
Technical field
The present invention relates to a kind of multifrequency antenna for a radio communication device, relate in particular to a kind of at the extra radiation assembly of short-circuit component increase, so that the multifrequency antenna in extra path to be provided.
Background technology
Antenna is used for launching or the reception radio wave, to transmit or the exchange radio signal.The electronic product that generally has radio communication function such as notebook computer, personal digital assistant (Personal Digital Assistant) etc., visits wireless network by built-in antenna usually.Therefore, in order to allow the user can access more easily cordless communication network, the frequency range of ideal antenna should increase in tolerance band as much as possible, and size then should reduce as far as possible, to cooperate the trend of portable wireless communication equipment volume-diminished, aerial integration is entered in the notebook computer.In addition, along with the evolution of wireless communication technology, the frequency of operation of different wireless communication system may be different.Therefore, desirable antenna should be able to be contained the required frequency band of different wireless communication network with single antenna.
Summary of the invention
Therefore, the invention provides a kind of multifrequency antenna for a radio communication device.
The present invention discloses a kind of multifrequency antenna for a radio communication device, includes a grounding assembly, is coupled to a ground end; One first radiation assembly; One coupling assembling includes a first end and is coupled to this first radiation assembly, and one second end; One feed-in assembly is coupled between this second end and this grounding assembly of this coupling assembling, is used for receiving FD feed; One short-circuit component is coupled between this second end and this grounding assembly of this coupling assembling; And one second radiation assembly, be coupled to this short-circuit component.
The present invention can be contained the required frequency band in different wireless communication networking with single antenna, to cooperate the trend of portable wireless communication equipment volume-diminished.
Description of drawings
Figure 1A is the schematic diagram of the multifrequency antenna of the embodiment of the invention.
Figure 1B is the signal path schematic diagram of the multifrequency antenna of Figure 1A.
Fig. 1 C is the voltage standing wave ratio schematic diagram of Figure 1A.
Fig. 2 A is the schematic diagram of the multifrequency antenna of the embodiment of the invention.
Fig. 2 B is the voltage standing wave ratio schematic diagram of Fig. 2 A.
Fig. 3 A is the schematic diagram of the multifrequency antenna of the embodiment of the invention.
Fig. 3 B is the voltage standing wave ratio schematic diagram of Fig. 3 A.
Fig. 4 A is the schematic diagram of the multifrequency antenna of the embodiment of the invention.
Fig. 4 B is the voltage standing wave ratio schematic diagram of Fig. 4 A.
Fig. 5 A is the schematic diagram of the multifrequency antenna of the embodiment of the invention.
Fig. 5 B is the voltage standing wave ratio schematic diagram of Fig. 5 A.
Fig. 6 A is the schematic diagram of the multifrequency antenna of the embodiment of the invention.
Fig. 6 B is the voltage standing wave ratio schematic diagram of Fig. 6 A.
Fig. 7 A and Fig. 7 B are the schematic diagram of the multifrequency antenna of the embodiment of the invention.
Fig. 8 A is the schematic diagram of the multifrequency antenna of the embodiment of the invention.
Fig. 8 B is the voltage standing wave ratio schematic diagram of Fig. 8 A.
Fig. 9 A is the schematic diagram of the multifrequency antenna of the embodiment of the invention.
Fig. 9 B is the voltage standing wave ratio schematic diagram of Fig. 9 A.
Figure 10 A to Figure 10 D is the schematic diagram of the multifrequency antenna of the embodiment of the invention.
Figure 11 A is the schematic diagram of the multifrequency antenna of the embodiment of the invention.
Figure 11 B is the voltage standing wave ratio schematic diagram of Figure 11 A.
The primary clustering symbol description:
1,2,3,4,5,6,71,200 first short circuit sections
72,8,9,101,102,202 second short circuit sections
103,104,11 multifrequency antenna θ, Φ angle
12 grounding assembly R1, R2, R3 signal path
14,14A the first radiation assembly 50 substrates
The perforation of 16 coupling assemblings, 52 circuit boards
18 feed-in assembly 52A coupling units
20,20A, 20B short-circuit component 24 the 3rd radiation assembly
22,22A, 22B, 22C the second radiation assembly 224,144,146,148 the 3rd Departments of Radiation
140,220,140A the first Department of Radiation 150 the 4th Department of Radiation
142,222,142A the second Department of Radiation
Embodiment
Please refer to Figure 1A, Figure 1A is the schematic diagram of a multifrequency antenna 1 of the embodiment of the invention.Multifrequency antenna 1 is used for a radio communication device (such as notebook computer), and it includes a grounding assembly 12, one first radiation assembly 14, a coupling assembling 16, a feed-in assembly 18, a short-circuit component 20 and one second radiation assembly 22.Grounding assembly 12 is held with being coupled to, is used to provide ground connection.The first radiation assembly 14 includes one first Department of Radiation 140 and one second Department of Radiation 142, is used for launching radio wave.Feed-in assembly 18 is coupled between coupling assembling 16 and the grounding assembly 12, is used for receiving FD feed, with by coupling assembling 16, is sent to the first radiation assembly 14.Short-circuit component 20 is coupled between coupling assembling 16 and the grounding assembly 12, and it includes one first short circuit section 200 and one second short circuit section 202, and both angle Φ preferably are 90 °.In addition, the second radiation assembly 22 couples short-circuit component 20, is used to provide extra signal path, and to reach the purpose of multifrequency, it includes one first Department of Radiation 220 and one second Department of Radiation 222, and both angle theta preferably are 90 °.
Please continue with reference to Figure 1B, Figure 1B is the signal path schematic diagram of multifrequency antenna 1.By Figure 1B as can be known, multifrequency antenna 1 can produce three signal paths, is respectively R1, R2, R3.Wherein, signal path R1, R2 are produced through coupling assembling 16, the first Department of Radiation 140 and the second Department of Radiation 142 by 18 beginnings of feed-in assembly, and this kind producing method is well known to those of ordinary skill in the art; Signal path R3 then is by 18 beginnings of feed-in assembly, through partial short circuit assembly 20, produces by the second radiation assembly 22 at last.In other words, except signal path R1, R2, the present invention also provides extra signal path R3, to reach the purpose of three frequencies.
Therefore, by the second radiation assembly 22, multifrequency antenna 1 can provide extra signal path R3, and then produces three transmission bands.In the case, as long as the length and width size of suitable adjustment the first radiation assembly 14 and the second radiation assembly 22 or material etc. namely can produce the voltage standing wave ratio schematic diagram shown in Fig. 1 C.
The present invention is extra increase the second radiation assembly 22 on short-circuit component 20, and then signal path R3 is provided.The characteristic such as shape, material that it should be noted that the second radiation assembly 22 is not limited to specified conditions, as long as can reach the required frequency range of designer.Certainly, can also increase other radiation assemblies in short-circuit component 20, or go out extra Department of Radiation in the second radiation assembly 22 top sets, so that more multiband to be provided.Same, other assemblies beyond the second radiation assembly 22 can also have similar variation, are not limited to this.Below will be sequentially explain for the variation of the second radiation assembly 22, short-circuit component 20, the first radiation assembly 14 etc., be variation of the present invention be not limited only to following for example.
In Figure 1A, the second radiation assembly 22 is comprised of the first vertical each other Department of Radiation 220 and the second Department of Radiation 222.In fact, the angle theta of the first Department of Radiation 220 and the second Department of Radiation 222 is not limited to 90 °, can also be greater than or less than 90 °, and is required depending on the designer.In addition, the shape of the second radiation assembly 22 also is not limited to the first Department of Radiation 220 and the second Department of Radiation 222 formed " L " shape, and it can also be arc or the formed inclined-plane of single metal arm.
For example, please refer to Fig. 2 A, Fig. 2 A is the schematic diagram of a multifrequency antenna 2 of the embodiment of the invention.The framework of multifrequency antenna 2 is similar to multifrequency antenna 1, and difference is that multifrequency antenna 2 is second radiation assemblies 22 that replace multifrequency antenna 1 with the second radiation assembly 22A of a cambered surface.In this case, the voltage standing wave ratio of multifrequency antenna 2 namely shown in Fig. 2 B, can produce three frequency ranges equally.
In like manner, please refer to Fig. 3 A, Fig. 3 A is the schematic diagram of a multifrequency antenna 3 of the embodiment of the invention.The framework of multifrequency antenna 3 is similar to multifrequency antenna 1, and difference is that multifrequency antenna 3 is second radiation assemblies 22 that replace multifrequency antenna 1 with the second radiation assembly 22B on an inclined-plane.In this case, the voltage standing wave ratio of multifrequency antenna 3 namely shown in Fig. 3 B, can produce three frequency ranges equally.
Except the shape that changes the second radiation assembly 22, can also change the position that the second radiation assembly 22 links to each other with short-circuit component 20.
For example, please refer to Fig. 4 A, Fig. 4 A is the schematic diagram of a multifrequency antenna 4 of the embodiment of the invention.The framework of multifrequency antenna 4 is similar to multifrequency antenna 1, and difference is that multifrequency antenna 4 is second radiation assemblies 22 that replace multifrequency antenna 1 with three the second radiation assembly 22C that Department of Radiation was formed; Simultaneously, the second radiation assembly 22C is coupled to the second short circuit section 202 of short-circuit component 20.In this case, the voltage standing wave ratio of multifrequency antenna 4 namely shown in Fig. 4 B, can produce three frequency ranges equally.
In addition, when realizing multifrequency antenna of the present invention, except realizing in sheet metal (iron plate) mode, can also according to different demands, realize with multilayer circuit board.For example, please refer to Fig. 5 A, Fig. 5 A is the schematic diagram of a multifrequency antenna 5 of the embodiment of the invention.The framework of multifrequency antenna 5 is similar to multifrequency antenna 1, difference is that multifrequency antenna 5 is to be formed on the substrate 50, and grounding assembly 12, the first radiation assembly 14, coupling assembling 16, feed-in assembly 18 and short-circuit component 20 are formed at the front of substrate 50, and the second radiation assembly 22 is formed at the back side of substrate 50.In addition, 20 of the second radiation assembly 22 and short-circuit component are passed through circuit board perforation (via) 52 bindings.In this case, the voltage standing wave ratio of multifrequency antenna 5 namely shown in Fig. 5 B, can produce three frequency ranges equally.
Except by circuit board perforation 52, can also pass through other linkage units, link the second radiation assembly 22 and short-circuit component 20.For example, please refer to Fig. 6 A, Fig. 6 A is the schematic diagram of a multifrequency antenna 6 of the embodiment of the invention.The framework of multifrequency antenna 6 is similar to multifrequency antenna 5, and difference is that in multifrequency antenna 6 20 of the second radiation assembly 22 and short-circuit component are to link by a coupling unit 52A.In this case, the voltage standing wave ratio of multifrequency antenna 6 namely shown in Fig. 6 B, can produce three frequency ranges equally.
By Fig. 2 A, Fig. 2 B to Fig. 6 A, Fig. 6 B as can be known, the shape of the second radiation assembly 22, position, mode of connection etc. all can have different designs according to different situations, and not as limit.In addition, the present invention can also increase other radiation assemblies or increase other Departments of Radiation at the second radiation assembly 22 in short-circuit component 20, to reach the purpose of multifrequency.For example, please refer to Fig. 7 A and Fig. 7 B, Fig. 7 A and Fig. 7 B are embodiment of the invention multifrequency antenna 71,72 schematic diagram.Multifrequency antenna 71,72 framework are similar to multifrequency antenna 1, and difference is additionally on the short-circuit component 20 of multifrequency antenna 71 to increase by one the 3rd radiation assembly 24, and extra one the 3rd Department of Radiation 224 that increases on the second radiation assembly 22 of multifrequency antenna 72.It should be noted that Fig. 7 A and Fig. 7 B only in order to variation of the present invention to be described, those of ordinary skills should adjust the radiation assembly quantity on the short-circuit component 20 according to required, or the Department of Radiation quantity that comprises of the second radiation assembly 22.
Next the variation of short-circuit component 20 is described.Please refer to Fig. 8 A, Fig. 8 A is the schematic diagram of a multifrequency antenna 8 of the embodiment of the invention.The framework of multifrequency antenna 8 is similar to multifrequency antenna 1, and difference is that multifrequency antenna 8 is the short-circuit component 20 that replace multifrequency antenna 1 with the short-circuit component 20A of a cambered surface.In this case, the voltage standing wave ratio of multifrequency antenna 8 namely shown in Fig. 8 B, can produce three frequency ranges equally.
In like manner, please refer to Fig. 9 A, Fig. 9 A is the schematic diagram of the embodiment of the invention one multifrequency antenna 9.The framework of multifrequency antenna 9 is similar to multifrequency antenna 1, and difference is that multifrequency antenna 9 is the short-circuit component 20 that replace multifrequency antenna 1 with the short-circuit component 20B on an inclined-plane.In this case, the voltage standing wave ratio of multifrequency antenna 9 namely shown in 9B figure, can produce three frequency ranges equally.
The variation of the first radiation assembly 14 is described at last.Please refer to Figure 10 A to Figure 10 D, Figure 10 A figure to Figure 10 D is embodiment of the invention multifrequency antenna 101,102,103 and 104 schematic diagram.Multifrequency antenna 101,102,103 and 104 framework are similar to multifrequency antenna 1, difference is all to have increased extra Department of Radiation at the first radiation assembly 14 in the multifrequency antenna 101,102,103 and 104: in multifrequency antenna 101, increase by one the 3rd Department of Radiation 144 on the first Department of Radiation 140 of the first radiation assembly 14; In multifrequency antenna 102, the first Department of Radiation 140 of the first radiation assembly 14 and the intersection of the second Department of Radiation 142 increase by one the 3rd Department of Radiation 146; In multifrequency antenna 103, increase by one the 3rd Department of Radiation 148 on the second Department of Radiation 142 of the first radiation assembly 14; In multifrequency antenna 104, except the 3rd Department of Radiation 148, also the intersection at the first Department of Radiation 140 and the second Department of Radiation 142 increases by one the 4th Department of Radiation 150.It should be noted that Figure 10 A to Figure 10 D only in order to variation of the present invention to be described, those of ordinary skills should according to required, adjust the Department of Radiation quantity that the first radiation assembly 14 comprises, and be not limited to this.
In addition, the shape of the first radiation assembly 14 also is not limited to particular types.For example, please refer to Figure 11 A, Figure 11 A is the schematic diagram of the embodiment of the invention one multifrequency antenna 11.The framework of multifrequency antenna 11 is similar to multifrequency antenna 1, and difference is that multifrequency antenna 11 replaces the first radiation assembly 14 of multifrequency antenna 1 with one first radiation assembly 14A; Wherein, the one first Department of Radiation 140A of the first radiation assembly 14A and one second Department of Radiation 142A all include bending structure.In this case, the voltage standing wave ratio of multifrequency antenna 11 namely shown in Figure 11 B, can produce three frequency ranges equally.
It should be noted that above various embodiment illustrates spirit of the present invention, those of ordinary skills should according to required, do suitable variation and modification, and be not limited to this.Simultaneously, the non-individualism of various embodiment can also be used with mutually, decides on the designer is required.
In sum, multifrequency antenna of the present invention is to increase extra radiation assembly in short-circuit component, so that extra signal path to be provided, thereby reaches the purpose of multifrequency.Therefore, as long as characteristics such as the size of suitable each assembly of adjustment, materials, the present invention namely can be contained the required frequency band in different wireless communication networking with single antenna, to cooperate the trend of portable wireless communication equipment volume-diminished.
The above only is preferred embodiment of the present invention, and every equivalent variations that claims scope is done according to the present invention and modification all should belong to covering scope of the present invention.
Claims (20)
1. multifrequency antenna that is used for a radio communication device comprises:
One grounding assembly is coupled to a ground end;
One first radiation assembly;
One coupling assembling comprises that a first end is coupled to described the first radiation assembly, and one second end;
One feed-in assembly is coupled between described second end and described grounding assembly of described coupling assembling, is used for receiving FD feed;
One short-circuit component is coupled between described second end and described grounding assembly of described coupling assembling; And
One second radiation assembly is coupled to described short-circuit component and on described short-circuit component;
Wherein, described the second radiation assembly provides extra signal path, and described extra signal path is begun by described feed-in assembly, through the described short-circuit component of part, at last by described the second radiation assembly.
2. multifrequency antenna as claimed in claim 1, wherein said the first radiation assembly comprises:
One first Department of Radiation is coupled to the described first end of described coupling assembling, and extends along a first direction; And
One second Department of Radiation is coupled to the described first end of described the first Department of Radiation and described coupling assembling, and extends along the rightabout of described first direction.
3. multifrequency antenna as claimed in claim 2, wherein said the first Department of Radiation comprises at least one bending.
4. multifrequency antenna as claimed in claim 2, wherein said the second Department of Radiation comprises at least one bending.
5. multifrequency antenna as claimed in claim 1, wherein said short-circuit component comprises:
One first short circuit section is coupled to described second end of described coupling assembling; And
One second short circuit section is coupled between described the first short circuit section and the described grounding assembly.
6. multifrequency antenna as claimed in claim 5, the angle of wherein said the first short circuit section and described the second short circuit section is 90 °
7. multifrequency antenna as claimed in claim 5, wherein said the second radiation assembly is coupled to described the first short circuit section.
8. multifrequency antenna as claimed in claim 5, wherein said the second radiation assembly is coupled to described the second short circuit section.
9. multifrequency antenna as claimed in claim 1, wherein said short-circuit component are one circular-arc.
10. multifrequency antenna as claimed in claim 1, wherein said short-circuit component is a metal arm.
11. multifrequency antenna as claimed in claim 1, wherein said the second radiation assembly comprises:
One first Department of Radiation is coupled to described short-circuit component; And
One second Department of Radiation is coupled to described the first Department of Radiation.
12. multifrequency antenna as claimed in claim 11, the angle of wherein said the first Department of Radiation and the second Department of Radiation are 90 degree.
13. multifrequency antenna as claimed in claim 11, wherein said the second radiation assembly also comprises one the 3rd Department of Radiation, is coupled to described the second Department of Radiation.
14. multifrequency antenna as claimed in claim 1, it also comprises one the 3rd radiation assembly, is coupled to described short-circuit component.
15. multifrequency antenna as claimed in claim 1, wherein said the second radiation assembly are one circular-arc.
16. multifrequency antenna as claimed in claim 1, wherein said the second radiation assembly is a metal arm.
17. multifrequency antenna as claimed in claim 1, it also comprises a substrate, described substrate comprises a first surface and one second, described grounding assembly, described the first radiation assembly, described feed-in assembly, described coupling assembling and described short-circuit component are formed at described first surface, and described the second radiation assembly is formed at described second.
18. multifrequency antenna as claimed in claim 17, it also comprises circuit board perforation, is coupled between described the second radiation assembly and the described short-circuit component.
19. multifrequency antenna as claimed in claim 17, it also comprises a coupling unit, is coupled between described the second radiation assembly and the described short-circuit component.
20. multifrequency antenna as claimed in claim 1, wherein said radio communication device are a notebook computer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101811910A CN101740866B (en) | 2008-11-27 | 2008-11-27 | Multi-frequency antenna for wireless communication device |
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| CN2008101811910A CN101740866B (en) | 2008-11-27 | 2008-11-27 | Multi-frequency antenna for wireless communication device |
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| CN101740866A CN101740866A (en) | 2010-06-16 |
| CN101740866B true CN101740866B (en) | 2013-01-02 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151612A (en) * | 2013-03-29 | 2013-06-12 | 东南大学 | Broadside coupled feeding multi-band frequency broadband planar antenna |
| CN104425899B (en) * | 2013-08-21 | 2017-10-03 | 启碁科技股份有限公司 | Multifrequency antenna |
| CN108140940B (en) * | 2015-10-22 | 2021-05-25 | 株式会社村田制作所 | Antenna device |
| CN111326858B (en) * | 2018-12-17 | 2021-09-03 | 启碁科技股份有限公司 | Antenna structure |
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