CN101997161B - Multi-frequency antenna - Google Patents
Multi-frequency antenna Download PDFInfo
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- CN101997161B CN101997161B CN200910306001.8A CN200910306001A CN101997161B CN 101997161 B CN101997161 B CN 101997161B CN 200910306001 A CN200910306001 A CN 200910306001A CN 101997161 B CN101997161 B CN 101997161B
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- arm
- metal
- short circuit
- radiation
- metal sheet
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Abstract
The invention relates to a multi-frequency antenna which comprises a grounding metal sheet, a first radiation metal sheet, a second radiation metal sheet, a short circuit metal arm and a feed-in coaxial transmission line, wherein the grounding metal sheet is provided with an edge and a grounding point; the first radiation metal sheet and the grounding metal sheet are arranged at an interval; the second radiation metal sheet extends upward from the edge of the grounding metal sheet; the short circuit metal arm is positioned between the first radiation metal sheet and the grounding metal sheet; the feed-in coaxial transmission line is provided with a center lead for transmitting signals and an outer grounding conductor; a short circuit point is arranged on the edge, one end of the short circuit metal arm is connected to one end of the first radiation metal sheet, the other end of the short circuit metal arm is connected to the short circuit point of the grounding metal sheet, and a feed-in point is arranged on the short circuit metal arm; the first radiation metal sheet is extended along the direction far away from the second radiation metal sheet, and the first radiation metal sheet, the second radiation metal sheet and the short circuit metal arm together form a gap; and the first radiation metal sheet and the second radiation metal sheet respectively work at a first working band and a second working band. The multi-frequency antenna of the invention has the advantages of simple structure and small occupation of the inner space of electronic equipment.
Description
[technical field]
The present invention relates to a kind of multifrequency antenna, relate in particular to a kind of multifrequency antenna being applied on radio communication product.
[background technology]
Along with the fast development of wireless network in recent years, on the performance requirement of antenna, also improve gradually, the antenna of integrating in electronic equipment not only requires the downsizing of size, and must possess characteristics such as having built-in, conformability and multiband, just has the market competitiveness.
Be applicable at present the telecommunications product of wireless network, more existing conventional double-frequency inverted F-type antenna designs, these antenna generally includes one first radiation arm, one second radiation arm, one short circuit metal arm, one ground strip and a feeder line, wherein the first radiation arm and the second radiation arm connect this short circuit metal arm and extend to both sides in one end and in opposite direction, the other end of this short circuit metal arm connects this ground strip, feeder line connects the feedback point being positioned on this short circuit metal arm, signal imports and makes this first radiation arm and the second radiation arm realize first in this feedback point, the second operating frequency.The content being disclosed for No. I240450 as TaiWan, China patent announcement.But radiation arm corresponding in the time that operating frequency is lower often will design longlyer, two radiation arms must oppositely extend, and so make the size of antenna larger, waste electronic equipment internal space.
Therefore, the invention provides that a kind of size is little, joint space-efficient multifrequency antenna.
[summary of the invention]
Main purpose of the present invention is to provide a kind of undersized multifrequency antenna.
For achieving the above object, the present invention adopts following technical scheme: a kind of multifrequency antenna, it comprises the grounded metal sheet with an edge and an earth point, with spaced the first radiation sheet metal of grounded metal sheet, from upwardly extending the second radiation sheet metal in the edge of grounded metal sheet, short circuit metal arm between this first radiation sheet metal and grounded metal sheet and there is the center conductor of signal transmission and the feed-in coaxial transmission line of outer earthing conductor, edge is provided with a short dot, described the first radiation sheet metal works in the first working band, the second radiation sheet metal works in the second working band, one end of described short circuit metal arm is connected to one end of the first radiation sheet metal, the other end is connected to the short dot of grounded metal sheet, and this short circuit metal arm is provided with a load point, described center conductor is connected to this load point, outer earthing conductor is connected to the earth point of grounded metal sheet, the first radiation sheet metal extends along the direction away from the second radiation sheet metal, the first radiation sheet metal, the common gap that forms of the second radiation sheet metal and short circuit metal arm.
Compared with prior art, the electronic equipment internal space simple in structure, that take of multifrequency antenna of the present invention is little.
[brief description of the drawings]
Fig. 1 is the stereogram of the first embodiment of multifrequency antenna of the present invention.
Fig. 2 is the view of another angle shown in Fig. 1.
Fig. 3 is the stereogram of the second embodiment of multifrequency antenna of the present invention.
Fig. 4 is the stereogram of the 3rd embodiment of multifrequency antenna of the present invention.
[embodiment]
Refer to shown in Fig. 1 and Fig. 2 its stereogram that is the first embodiment of the present invention.In the first embodiment, multifrequency antenna 1 comprises grounded metal sheet 10, the first radiation sheet metal 11, the second radiation sheet metal 12, short circuit metal arm 13 and a coaxial transmission line 14.
Grounded metal sheet 10 has an edge 101, and the 101 near middle positions that keep to the side are provided with a short dot 102, and short circuit metal arm 13 extends vertically upward from this short dot 102.The first radiation sheet metal 11 is the rectangular metal sheet of extending along the direction away from the second radiation sheet metal 12 from the other end of short circuit metal arm 13, and it is positioned at grounded metal sheet 10 tops and is roughly parallel to grounded metal sheet 10.The second radiation sheet metal 12 is rectangular metal sheet of the bending that vertically extends from grounded metal sheet 10, and it comprises that the Part I 121 that extends vertically upward from grounded metal sheet 10 and Part I 121 ends bendings extend out and be roughly parallel to the Part II 122 of grounded metal sheet 10.This Part II 122 and the first radiation sheet metal 11 are roughly positioned at same level, and this Part I 121 is positioned at same plane with short circuit metal arm 13.Short circuit metal arm 13 is between the first radiation sheet metal 11 and grounded metal sheet 10 and be roughly N shape, and it comprises the first support arm 131 of vertical connection the first radiation sheet metal 11, vertically connects grounded metal sheet 10 in L shaped second support arm 132 of short dot 102.The second arm 1322, the second arms 1322 that the second support arm 132 comprises the first arm 1321 of vertical connection the first support arm 131 and vertically connects grounded metal sheet 10 are perpendicular to the first arm 1321.One load point 134 is located on the first arm 1321 of the second support arm 132.Grounded metal sheet 10 is provided with an earth point 103.Coaxial transmission line 14 is in order to signal transmission, and it comprises center conductor 141 and an outer earthing conductor 142.Center conductor 141 is connected to load point 134, and earthing conductor 142 is connected to the earth point 103 of grounded metal sheet 10.The first common gap 15 that forms of support arm 131 of the first radiation sheet metal 11, the second radiation sheet metal 12 and short circuit metal arm 13.
Fig. 3 is the stereogram of the second embodiment of multifrequency antenna of the present invention.In this embodiment, structure, the position of first, second radiation sheet metal of multifrequency antenna 2 21,22, grounded metal sheet 20 and coaxial transmission line 24 are all identical with a upper embodiment, and short circuit metal arm 23 is different from the short circuit metal arm 13 of a upper embodiment.Short circuit metal arm 23 is between the first radiation sheet metal 21 and grounded metal sheet 20, and it comprises the first support arm 231 of vertical connection the first radiation sheet metal 21 and the second support arm 232 of connection the first support arm 231 and grounded metal sheet 20.Grounded metal sheet 20 is provided with edge 201, and edge 201 near middles are provided with the short dot 202 being connected with the second support arm 232.One load point 234 is located on the second support arm 232 and can be along being moved on the second support arm 232, and the center conductor 241 of coaxial line 24 is connected to this load point 234, and the outer earthing conductor 242 of coaxial line 24 is connected to the earth point 203 of grounded metal sheet 20.The first common gap 25 that forms of support arm 231 of the first radiation sheet metal 21, the second radiation sheet metal 22 and short circuit metal arm 23.
Fig. 4 is the stereogram of the 3rd embodiment of multifrequency antenna of the present invention, in this embodiment, first, second radiation sheet metal 31,32, grounded metal sheet 30 and the coaxial transmission line 34 of multifrequency antenna 3 are all identical with a upper example structure, and short circuit metal arm 33 is different from the short circuit metal arm 23 of a upper embodiment.Short circuit metal arm 33 between the first radiation sheet metal 31 and grounded metal sheet 30, the second support arm that it comprises the first support arm 331 of vertical connection the first radiation sheet metal 31 and is jointly made up of the first L shaped structure 332 and the second L shaped structure 333.The first L shaped structure 332 comprises the first arm 3321 of vertical connection the first support arm 331 and second arm 3322 vertical with the first arm 3321.The second L shaped structure 333 comprise the L shaped structure 332 of vertical connection first the first arm 3321 the first arm 3331 and vertically connect grounded metal sheet 30 in the second arm 3332 of short dot 302.One load point 334 is located on the second arm 3322 of the first L shaped structure 332 and can on the second arm 3322, be moved, and the length of the first arm 3321 can be adjusted.The center conductor 341 of coaxial line 34 is connected to this load point 334, and the outer earthing conductor 342 of coaxial line 34 is connected to the earth point 303 of grounded metal sheet 30.The first common gap 35 that forms of support arm 331 of the first radiation sheet metal 31, the second radiation sheet metal 32 and short circuit metal arm 33.
In above-mentioned all embodiment, grounded metal sheet 10 (20, 30), the first radiation sheet metal 11 (21, 31), the second radiation sheet metal 12 (22, 32) and short circuit metal arm 13 (23, 33) can utilize single sheet metal punching press (stamping) or cutting (cutting) to be made, or by this first radiation sheet metal 11 (21, 31), the second radiation sheet metal 12 (22, 32) and short circuit metal arm 13 (or 23 or 33) to print or etching mode is formed on a microwave base plate, be connected to again grounded metal sheet 10 (20, 30).
Simultaneously in above-mentioned each embodiment, coaxial transmission line 14 (24, 34) by load point 134 (234, 3334) signal transmission makes the first radiation sheet metal 11 (21, 31) can receive and dispatch the signal of a lower operating frequency, the second radiation sheet metal 12 (22, 32) by with the first radiation sheet metal 11 (21, 31) and short circuit metal arm 13 (or 23 or 33) coupling worked in a higher operational frequency, simultaneously by adjusting play 15 (25, 35) shape, size is to adjust frequency drift and the coupling of first and second frequency band of this multifrequency antenna, to realize suitable wireless zone or the requirement of Wide Area Network band system band.
Claims (9)
1. a multifrequency antenna, it comprises the grounded metal sheet with an edge and an earth point, with spaced the first radiation sheet metal of grounded metal sheet, from upwardly extending the second radiation sheet metal in the described edge of grounded metal sheet, short circuit metal arm between the first radiation sheet metal and grounded metal sheet and there is the center conductor of signal transmission and the feed-in coaxial transmission line of outer earthing conductor, the described edge of grounded metal sheet is provided with a short dot, it is characterized in that: described the first radiation sheet metal works in the first working band, the second radiation sheet metal works in the second working band, one end of described short circuit metal arm is connected to one end of the first radiation sheet metal, the other end is connected to the short dot on edge described in grounded metal sheet, and this short circuit metal arm is provided with a load point, described short circuit metal arm upwards extends and is positioned at the plane perpendicular to described grounded metal sheet from this short dot, described short circuit metal arm comprises and is connected to first support arm of first radiation sheet metal one end and connects the first support arm and grounded metal sheet and be positioned at conplane the second support arm with this first support arm, described load point is positioned on this second support arm, described center conductor is connected to this load point, outer earthing conductor is connected to the earth point of grounded metal sheet, the first radiation sheet metal extends along the direction away from the second radiation sheet metal, the first radiation sheet metal, the common gap that forms of the second radiation sheet metal and short circuit metal arm, described the second radiation sheet metal comprises the Part I and the Part II parallel with grounded metal sheet that extend vertically upward from described grounded metal sheet, and Part I and described short circuit metal arm are in the same plane, this Part II and described the first radiation sheet metal are in the same plane.
2. multifrequency antenna as claimed in claim 1, is characterized in that: described the second radiation sheet metal is to be bent into L shaped rectangular metal sheet.
3. multifrequency antenna as claimed in claim 2, is characterized in that: described the first radiation sheet metal is one to be positioned at the rectangular metal sheet on longitudinally, and its one end is vertical connects described short circuit metal arm.
4. multifrequency antenna as claimed in claim 1, is characterized in that: described grounded metal sheet, the first radiation sheet metal, the second radiation sheet metal and short circuit metal arm are made by a single sheet metal punching press or cutting.
5. multifrequency antenna as claimed in claim 1, is characterized in that: described the first radiation sheet metal, the second radiation sheet metal and short circuit metal arm are by printing or etching technique is formed on a microwave base plate.
6. as right is wanted the multifrequency antenna as described in 1, it is characterized in that: described the second support arm is roughly L shaped, it comprises the first arm of described the first support arm of vertical connection and vertically connects second arm of described short circuit metal arm to short dot, and described load point is positioned on described this first arm.
7. multifrequency antenna as claimed in claim 1, it is characterized in that: described the second support arm comprises one first L shaped structure and one second L shaped structure, the first L shaped structure comprises the first arm of vertical connection the first support arm and vertically connects the second arm of this first arm, the second L shaped structure comprise vertical connection the first L shaped structure the second arm the first arm and vertically connect the second arm of grounded metal sheet.
8. multifrequency antenna as claimed in claim 7, is characterized in that: described load point is positioned on the second arm of this first L shaped structure.
9. multifrequency antenna as claimed in claim 1, is characterized in that: described the first working band is a lower operational frequency bands, and described the second working band is a higher operational frequency bands.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910306001.8A CN101997161B (en) | 2009-08-25 | 2009-08-25 | Multi-frequency antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910306001.8A CN101997161B (en) | 2009-08-25 | 2009-08-25 | Multi-frequency antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101997161A CN101997161A (en) | 2011-03-30 |
| CN101997161B true CN101997161B (en) | 2014-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910306001.8A Expired - Fee Related CN101997161B (en) | 2009-08-25 | 2009-08-25 | Multi-frequency antenna |
Country Status (1)
| Country | Link |
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| CN (1) | CN101997161B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103682622B (en) * | 2012-09-21 | 2016-03-02 | 富士康(昆山)电脑接插件有限公司 | Multifrequency antenna |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2554814Y (en) * | 2002-06-25 | 2003-06-04 | 富士康(昆山)电脑接插件有限公司 | Two-frequency aerial |
| CN101106211A (en) * | 2006-07-14 | 2008-01-16 | 连展科技电子（昆山）有限公司 | Dual loop multi-frequency antenna |
| CN101447600A (en) * | 2007-11-26 | 2009-06-03 | 富士康(昆山)电脑接插件有限公司 | Antenna |
-
2009
- 2009-08-25 CN CN200910306001.8A patent/CN101997161B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2554814Y (en) * | 2002-06-25 | 2003-06-04 | 富士康(昆山)电脑接插件有限公司 | Two-frequency aerial |
| CN101106211A (en) * | 2006-07-14 | 2008-01-16 | 连展科技电子（昆山）有限公司 | Dual loop multi-frequency antenna |
| CN101447600A (en) * | 2007-11-26 | 2009-06-03 | 富士康(昆山)电脑接插件有限公司 | Antenna |
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| Publication number | Publication date |
|---|---|
| CN101997161A (en) | 2011-03-30 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20180825 |