CN102142611B - Dipole antenna - Google Patents
Dipole antenna Download PDFInfo
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- CN102142611B CN102142611B CN201010301007.9A CN201010301007A CN102142611B CN 102142611 B CN102142611 B CN 102142611B CN 201010301007 A CN201010301007 A CN 201010301007A CN 102142611 B CN102142611 B CN 102142611B
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- Prior art keywords
- linkage section
- radiation area
- dipole antenna
- radiation
- long limit
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- 230000005855 radiation Effects 0.000 claims description 66
- 230000007704 transition Effects 0.000 claims description 15
- 238000005452 bending Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The invention provides a dipole antenna, comprising a feed-in end, a grounding end and a radiator, wherein the feed-in end and the grounding end are arranged in the same plane; the radiator comprises two symmetrical radiating arms; one end of each of the two radiating arms is respectively and vertically connected to the feed-in end and the grounding end, and the other ends of the two radiating arms are mutually connected; each radiating arm comprises a first radiating zone, a second radiating zone and a third radiating zone which are connected in sequence; the plane of the first radiating zone is vertical to the plane of the feed-in end and the grounding end; the plane of the second radiating zone is parallel to the plane of the feed-in end and the grounding end; and the third radiating area comprises a first piece body coplanar with the first radiating zone and a second piece body coplanar with the second radiating zone. In the dipole antenna, the volume is small, and the covered frequency band is wide.
Description
Technical field
The present invention relates to a kind of antenna, relate in particular to a kind of dipole antenna that is applied to radio communication device.
Background technology
At mobile phone, personal digital assistant (Personal Digital Assistant, PDA) etc. in radio communication device, antenna is used for transmitting, reception radio wave to transmit, to exchange the parts of radio signal as it, beyond doubt one of most important assembly in radio communication device.At present, radio communication device generally all needs to possess in double frequency or the function that more communicates under multiband, so its antenna assembly generally all uses double frequency or multifrequency antenna.
In mobile phone antenna design, the planar inverted-F antenna of tradition (PIFA) is owing to having the restriction of antenna height in design and the current-carrying part of larger area need to be set, be difficult to reach the designing requirement of radio communication device miniaturization, therefore more and more designers transfer to using wire antenna (wire antenna) as design at present.In online Antenna Design, dipole antenna (dipoleantenna) is because having compared with the extremely designer's favor of large space utilization rate.Therefore how under the prerequisite that does not increase radio communication device volume, to design and to contain the challenge that the wide dipole antenna of frequency range has become Ge Jia antenna manufacturer maximum.
Summary of the invention
In view of this, be necessary to provide a kind of dipole antenna of containing the wide and small volume of frequency range.
A kind of dipole antenna, it comprises a feed side, one earth terminal and a radiant body, this feed side and earth terminal are arranged in same plane, described radiant body comprises disymmetrical radiation arm, described two radiation arms one end is separately vertically connected at respectively feed side and earth terminal, the other end is connected with each other, each radiation arm comprises one first radiation area connecting successively, one second radiation area and one the 3rd radiation area, described the first radiation area is vertical with the plane at earth terminal place with feed side, the plane parallel at described the second radiation area and feed side and earth terminal place, described the 3rd radiation area comprises the first lamellar body and the second coplanar lamellar body of the one and second radiation area that the one and first radiation area is coplanar.
Compared to prior art, described dipole antenna utilizes two radiation arm symmetric designs, and forms a current circuit, with this, changes feed-in sense of current, can inspire three resonance modes, makes this dipole antenna can work in a plurality of frequency ranges.This dipole antenna volume is little, contains frequency range wide.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of the dipole antenna of preferred embodiment of the present invention;
Fig. 2 is the schematic perspective view of another angle of dipole antenna of preferred embodiment of the present invention;
Fig. 3 is the return loss resolution chart of the dipole antenna of preferred embodiment of the present invention.
Main element symbol description
| |
100 |
| |
10 |
| Earth |
20 |
| |
30 |
| |
32 |
| The |
34 |
| The |
342 |
| The first |
3422 |
| The first |
3424 |
| The |
344 |
| The second |
3442 |
| The 3rd |
3444 |
| The |
36 |
| The |
362 |
| The |
364 |
| The |
366 |
| The |
38 |
| The first |
380 |
| The second |
382 |
| |
384 |
| |
386 |
| Connecting |
388 |
| |
389 |
Embodiment
Shown in Fig. 1, be the dipole antenna 100 of better embodiment of the present invention, it can be applicable to mobile phone or PDA etc. has in the portable electron device of radio communication function.This dipole antenna 100 comprises a feed side 10, an earth terminal 20 and a radiant body 30.
This feed side 10 is a straight rectangle lamellar body, it can be installed in the existing circuit board (not shown) in portable electron device, and be electrically connected with the existing signal feed-in point (not shown) being arranged on this circuit board, think that described dipole antenna 100 plays signal feed-in effect.
This earth terminal 20 is that a width is consistent with feed side 10, length is slightly long and be arranged at conplane rectangle lamellar body with feed side 10.This earth terminal 20 is parallel to each other with the bearing of trend of feed side 10, and one end of this earth terminal 20 is concordant with feed side 10, the other end by with circuit board on existing earth point (not shown) be electrically connected, think that described dipole antenna 100 provides ground connection acting on.
This radiant body 30 comprises disymmetrical radiation arm 32, and this two radiation arm 32 one end is separately vertically connected at respectively feed side 10 and earth terminal 20, and the other end is connected with each other so that this dipole antenna 100 forms current circuit.Described in each, radiation arm 32 comprises one first radiation area 34, one second radiation area 36 and one the 3rd radiation area 38 connecting successively.
The first radiation area 34 is a lamellar body, and it is placed in the plane vertical with the plane at feed side 10 and earth terminal 20 places.This first radiation area 34 comprises in same plane and is all " L " one first bending segment 342 and one second bending segment 344 of shape.This first bending segment 342 comprises wider the first minor face 3422 and a first narrower long limit 3424.Wherein the first minor face 3422 of a radiation arm 32 is connected with feed side 10 is vertical, and this first minor face 3422 is suitable with feed side 10 width.The first minor face 3422 of another radiation arm 32 is connected with earth terminal 20 is vertical, the first minor face 3422 of this two radiation arm 32 is be arranged in parallel and in same plane.This first long limit 3424 is with first minor face 3422 is vertical is connected, and court is away from a side direction extension of feed side 10.This second bending segment 344 comprises one second long limit 3442 and one the 3rd long limit 3444 being connected, the width on this second long limit 3442 and the 3rd long limit 3444 is all roughly suitable with the first long limit 3424, the length on the 3rd long limit 3444 is suitable with the first long limit 3424, and is shorter than the second long limit 3442.Wherein the second long limit 3442 is parallel with the first long limit 3424, and the two vertical transition joins.The 3rd long limit 3444 is vertically connected at the end on the second long limit 3442, and oppositely extends towards the direction parallel with the first minor face 3422.
Incorporated by reference to consulting Fig. 2, the second radiation area 36 is a lamellar body, and it is placed in parallel plane another plane with feed side 10 and earth terminal 20 places.This second radiation area 36 comprises one first linkage section 362 connected vertically, one second linkage section 364 and one the 3rd linkage section 366 successively.This first linkage section 362 and the first radiation area 34 the 3rd long limit 3444 is vertical is connected, and towards extending to form a width and the 3rd with feed side 10 equidirectionals, to grow limit 3444 consistent, the lamellar body that length is slightly short.The width of the width of this second linkage section 364 and feed side 10 is suitable, and it is vertically connected at the end of the first linkage section 362, and towards extending to and concordant position roughly, feed side 10 near the direction of feed side 10 is straight.Now, 364 of second linkage sections of another radiation arm 32 extend to and earth terminal 20 concordant position roughly.The width of the 3rd linkage section 366 is between the first linkage section 362 and the second linkage section 364, and length is consistent with the first linkage section 362, and the 3rd linkage section 366 is vertically connected at the end of the second linkage section 364, and extends towards the direction with the first linkage section 362.
The 3rd radiation area 38 comprises one first lamellar body 380 and one second lamellar body 382, and this first lamellar body 380 and the first radiation area 34 are positioned at same plane, and it is a untight rectangle ring-type lamellar body.This first lamellar body 380 comprises a joint portion 384, a transition part 386, a junction 388 and the extension 389 connecting successively.This joint portion 384 is one to be vertically connected at the wider square lamellar body of the 3rd linkage section 366, and the inner side of its one end and the 3rd linkage section 366 is located along the same line.The joint portion 384 of two radiation arms 32 is connected to each other, so that this dipole antenna 100 forms current circuit.Width between the length sum of this two joint portion 384 and feed side 10 and earth terminal 20 is suitable.This transition part 386 is a straight rectangle lamellar body, it is connected in one end of joint portion 384, and extend towards the direction paralleling with the second long limit 3442 of the first radiation area 34, the length of this transition part 386 and width are all less than the second linkage section 364 of the second radiation area 36.This connecting portion 388 is a lamellar body suitable with joint portion 384 shapes, and it is relative with joint portion 384 is arranged at transition part 386 two ends.This extension 389 is vertically connected in a side edge direction towards joint portion 384 extensions parallel with transition part 386 of connecting portion 388.This extension 389 be shorter in length than transition part 386, the two width quite and interval arrange, and the width of the width of this extension 389 and transition part 386 and the width sum at the two interval suitable with joint portion 384 width.This second lamellar body 382 be the one and second radiation area 36 in conplane rectangle lamellar body, its width is suitable with extension 389.One side of this second lamellar body 382 is vertically connected at the outer ledge of connecting portion 388 and extension 389, and extends towards the direction of the second linkage section 364 near the second radiation area 36.Align with one end of connecting portion 388 and the end of extension 389 respectively in the two ends of this second lamellar body 382.
Refer to Fig. 3, the experiment proved that, this dipole antenna 100 all has good signal transmitting and receiving performance under 0.8GHz, 1.75GHz and tri-frequencies of 2.1GHz.Particularly, when this dipole antenna 100 is when receiving and dispatching the signal of 0.8GHz and 1.75GHz frequency, the electric current on two radiation arms 32 of this dipole antenna 100 is roughly symmetric, and this is lower dipole antenna mode producing of common mode feed-in; When this dipole antenna 100 is when receiving and dispatching the signal of 2.1GHz frequency, the first radiation area 34 of two radiation arms 32 of this dipole antenna 100 and the electric current on the second radiation area 36 are roughly symmetric, and this is lower dipole antenna mode producing of differential mode feed-in.
Claims (8)
1. a dipole antenna, it is characterized in that: described dipole antenna comprises a feed side, one earth terminal and a radiant body, this feed side and earth terminal are arranged in same plane, described radiant body comprises disymmetrical radiation arm, described two radiation arms one end is separately vertically connected at respectively feed side and earth terminal, the other end is connected with each other, each radiation arm comprises one first radiation area connecting successively, one second radiation area and one the 3rd radiation area, described the first radiation area is vertical with the plane at earth terminal place with feed side, the plane parallel at described the second radiation area and feed side and earth terminal place, described the 3rd radiation area comprises the first lamellar body and the second coplanar lamellar body of the one and second radiation area that the one and first radiation area is coplanar, described the first lamellar body comprises a joint portion, one transition part, a junction and an extension, described joint portion, transition part, connecting portion and extension vertically connect successively and form a untight rectangle ring-type lamellar body, the joint portion of described two radiation arms is connected to each other, described joint portion is connected in the second radiation area of radiation arm, when described dipole antenna is common mode feed-in, electric current on described two radiation arms is symmetric, when described dipole antenna is differential mode feed-in, the first radiation area of described two radiation arms and the electric current on the second radiation area are symmetric.
2. dipole antenna as claimed in claim 1, it is characterized in that: described the first radiation area comprises and is " L " one first bending segment of shape, described the first bending segment comprises one first minor face and one first long limit, described the first minor face is with feed side or earth terminal is vertical is connected, described the first long hem width degree is narrower than the first minor face, and is connected with the first minor face is vertical.
3. dipole antenna as claimed in claim 2, it is characterized in that: described the first radiation area comprises and is " L " one second bending segment of shape, described the second bending segment comprises one second long limit and one the 3rd long limit that width is suitable with the first long limit, the described second long limit is connected with the first long limit vertical transition, the described the 3rd long limit is vertically connected at the end on the second long limit, and extends towards the direction parallel with the first minor face.
4. dipole antenna as claimed in claim 3, it is characterized in that: described the second radiation area comprises one first linkage section, one second linkage section and one the 3rd linkage section, described the first linkage section and the first radiation area the 3rd long limit is vertical is connected, described the second linkage section is vertically connected at the first linkage section end, and straight extend to the position concordant with feed side or earth terminal, described the 3rd linkage section is vertically connected at the second linkage section latter end, and extends towards the direction parallel with the first linkage section.
5. dipole antenna as claimed in claim 4, it is characterized in that: described the first linkage section is one to be shorter in length than the 3rd long limit, the lamellar body that width is consistent, the width of described the second linkage section is consistent with feed side, length is longer than the first linkage section, described the 3rd linkage section is that a length is consistent with the first linkage section, the lamellar body of width between the first linkage section and the second linkage section.
6. dipole antenna as claimed in claim 4, it is characterized in that: described joint portion is a square lamellar body, it is vertically connected at the 3rd linkage section of the second radiation area, described transition part parallels with the second long limit of the first radiation area, described connecting portion is relative with joint portion is arranged at transition part two ends, described extension be shorter in length than transition part, the two interval arranges.
7. dipole antenna as claimed in claim 6, is characterized in that: a side of described the second lamellar body is vertically connected at the outer ledge of connecting portion and extension, aligns with one end of connecting portion and the end of extension respectively in two ends.
8. dipole antenna as claimed in claim 1, is characterized in that: described dipole antenna is the signal of 0.8GHz, 1.75GHz and 2.1GHz for headend frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010301007.9A CN102142611B (en) | 2010-02-01 | 2010-02-01 | Dipole antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010301007.9A CN102142611B (en) | 2010-02-01 | 2010-02-01 | Dipole antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102142611A CN102142611A (en) | 2011-08-03 |
| CN102142611B true CN102142611B (en) | 2014-02-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010301007.9A Expired - Fee Related CN102142611B (en) | 2010-02-01 | 2010-02-01 | Dipole antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102142611B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102263329A (en) * | 2010-05-28 | 2011-11-30 | 深圳富泰宏精密工业有限公司 | Antenna module and wireless communication apparatus applying antenna module |
| CN102544774B (en) * | 2012-02-23 | 2014-05-07 | 上海安费诺永亿通讯电子有限公司 | Multimode resonant antenna system |
| CN103346404B (en) * | 2013-06-28 | 2015-04-15 | 无锡创元电子科技有限公司 | Resonant type broadband short-wave antenna |
| CN106159447B (en) * | 2015-04-14 | 2019-06-25 | 启碁科技股份有限公司 | Smart Antenna Module and Omnidirectional Antenna |
| CN109390670B (en) * | 2018-10-23 | 2023-06-23 | 深圳市海勤科技有限公司 | Small-package double-frequency shrapnel antenna |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298265A (en) * | 1999-11-03 | 2001-06-06 | 安德鲁公司 | Collapsible dipole antenna |
| CN2484653Y (en) * | 2001-05-18 | 2002-04-03 | 蔡崇洲 | Microstrip Dipole Antenna Structure |
| CN1549395A (en) * | 2003-05-15 | 2004-11-24 | 富士康(昆山)电脑接插件有限公司 | Three-frequency dipole antenna and producing method thereof |
| CN101304110A (en) * | 2007-05-07 | 2008-11-12 | 富士康(昆山)电脑接插件有限公司 | Wide band antenna |
-
2010
- 2010-02-01 CN CN201010301007.9A patent/CN102142611B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298265A (en) * | 1999-11-03 | 2001-06-06 | 安德鲁公司 | Collapsible dipole antenna |
| CN2484653Y (en) * | 2001-05-18 | 2002-04-03 | 蔡崇洲 | Microstrip Dipole Antenna Structure |
| CN1549395A (en) * | 2003-05-15 | 2004-11-24 | 富士康(昆山)电脑接插件有限公司 | Three-frequency dipole antenna and producing method thereof |
| CN101304110A (en) * | 2007-05-07 | 2008-11-12 | 富士康(昆山)电脑接插件有限公司 | Wide band antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102142611A (en) | 2011-08-03 |
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Granted publication date: 20140212 Termination date: 20200201 |
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| CF01 | Termination of patent right due to non-payment of annual fee |