CN102509855B - Dual-band antenna and wireless communication terminal thereof - Google Patents
Dual-band antenna and wireless communication terminal thereof Download PDFInfo
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- CN102509855B CN102509855B CN201110316110.5A CN201110316110A CN102509855B CN 102509855 B CN102509855 B CN 102509855B CN 201110316110 A CN201110316110 A CN 201110316110A CN 102509855 B CN102509855 B CN 102509855B
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Abstract
A kind of dual-band antenna and wireless communication terminal thereof.The invention discloses a kind of dual-band antenna, it includes the dipole antenna and the sleeve element antenna that are bent to form, and described dipole antenna and sleeve element antenna are generally aligned in the same plane.Dual-band antenna of the present invention is combined in same plane by dipole antenna and sleeve element antenna, and the first and second radiation arms of described dipole antenna are integrally formed with the radiation arm of sleeve element antenna and grounding parts respectively, effectively reduce the size of antenna, meet antenna miniaturization trend, and simple in construction, easily produce, indirectly improve the production efficiency of factory, saved manufacturing cost.In addition dual-band antenna of the present invention is by exciting the method for multiple mode of resonance to substantially increase the bandwidth of antenna, effectively raises the radiation frequency of antenna.
Description
Technical field
The present invention relates to field of wireless communication, particularly relate to a kind of dual-band antenna being applied to field of wireless communication.
Background technology
Antenna is the critical elements in wireless communication terminal, and the example of wireless communication terminal includes mobile phone, computer, Set Top Box, personal digital assistant (PDA), e-book, multimedia player, radio etc..Antenna in wireless communication terminal serves as the air interface for transceiving radio frequency (RF) ripple.
Dipole antenna is as the one of antenna, because it has gain height, lightweight, and simple in construction is stable and reliable for performance, good seal performance, the advantage such as taken up space little and be used widely.The Chinese invention patent such as, applied for by Galtronics Ltd. of Israel in prior art discloses No. CN1625821A and discloses a kind of multi-band sleeve dipole antenna, this dipole antenna includes: generally axially disposed elongate inner conductor, this elongate inner conductor has the first end and the second end, and is connected to modulating signal source at its end；Generally axially disposed middle conductor, this middle conductor is commonly angled relative to this inner conductor and is coaxially disposed, and ground connection；The first generally axially disposed outer sleeve conductor, this first outer sleeve conductor is commonly angled relative to this inner conductor and this middle conductor is coaxially disposed；With generally axially disposed second outer sleeve conductor with the first end and the second end, this second outer sleeve conductor is commonly angled relative to this inner conductor and this middle conductor is coaxially disposed.
But, dipole antenna configuration of the prior art is complicated, take up room big, be not suitable with the trend toward miniaturization of wireless communication terminal, and existing dipole antenna is narrower because of its frequency band, the strong influence radiation efficiency of antenna.
Therefore necessary, dual-band antenna of the prior art is improved, to make up the deficiencies in the prior art or defect.
Summary of the invention
It is an object of the invention to provide a kind of dual-band antenna, its antenna structure by improving, not only effectively reduce the size of antenna, and simple in construction, improve the radiation efficiency of antenna simultaneously.
For reaching above-mentioned purpose, the present invention provides a kind of dual-band antenna, and it includes the dipole antenna and the sleeve element antenna that are bent to form, and described dipole antenna and sleeve element antenna are generally aligned in the same plane.
Further, described dual-band antenna also includes the both sides that printed circuit board (PCB), described dipole antenna and sleeve element antenna are formed at the same face of described printed circuit board (PCB).
Further, described dipole antenna includes along first radiation arm that longitudinally substantially arrange axisymmetricly in centre position of printed circuit board (PCB) and the second radiation arm, described first radiation arm and the second radiation arm generally rectangular but be formed with opening.
Further, described sleeve element antenna include one end integral part of sleeve oscillator radiation arm of the first radiation arm from described dipole antenna, from the integral part of grounding parts in one end of described second radiation arm and coaxial welding end.
Further, the first radiation arm of described dipole antenna and the second radiation arm are respectively provided with four arms of vertically extension or horizontal expansion parallel between two, and in the arm of described vertical extension, the length than another one near sleeve oscillator one end is short.
Further, the transverse width of described grounding parts is wider than described sleeve oscillator radiation arm and the first radiation arm of dipole antenna and the transverse width of the second radiation arm.
Further, described coaxial welding end includes being positioned at the inner wire of innermost layer, the cladding inner insulating layer of inner wire, the outer conductor being positioned at outside inner insulating layer and being coated with the external insulation layer of whole outer conductor from inside to outside respectively, described inner wire is welded in sleeve oscillator radiation arm, and described outer conductor is then welded in grounding parts.
It is a further object of the present invention to provide wireless communication terminal, it, by the antenna structure improved, not only effectively reduces the size of wireless communication terminal, and simple in construction, improve the work efficiency of wireless communication terminal simultaneously.
For achieving the above object, the present invention also can adopt following scheme: a kind of wireless communication terminal, including the dual-band antenna for printed circuit board (PCB), this dual-band antenna includes the dipole antenna and the sleeve element antenna that are bent to form, and described dipole antenna and sleeve element antenna are generally aligned in the same plane.
Compared with prior art, the invention have the advantages that
Dual-band antenna of the present invention is combined in same plane by dipole antenna and sleeve element antenna, and the first and second radiation arms of described dipole antenna are integrally formed with the radiation arm of sleeve element antenna and grounding parts respectively, effectively reduce the size of antenna, meet antenna miniaturization trend, and simple in construction, easily produce, indirectly improve the production efficiency of factory, saved manufacturing cost.In addition dual-band antenna of the present invention is by exciting the method for multiple mode of resonance to substantially increase the bandwidth of antenna, effectively raises the radiation frequency of antenna.
Accompanying drawing explanation
Fig. 1 is the plane graph of the dual-band antenna of the present invention.
Fig. 2 is the return loss plot of the dual-band antenna of the present invention.
Detailed description of the invention
Understandable for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Elaborate detail in the following description so that fully understanding the present invention.But the present invention can be different from alternate manner described here implement with multiple, and those skilled in the art can do similar popularization when without prejudice to intension of the present invention.Therefore the present invention is not by the restriction of following public detailed description of the invention, such as Examples below illustrates the scheme feature of dual-band antenna of the present invention for PCB antenna, but should be clear and definite, the feature that PCB antenna in embodiment possesses is also applied for other type of antenna, does not such as adopt PCB etc..
As it is shown in figure 1, the plane graph of the dual-band antenna that it is the present invention.Dual-band antenna 100 of the present invention is a printed antenna being formed at printed circuit board (PCB) 3, and described dual-band antenna 100 includes the dipole antenna 1 and the sleeve element antenna 2 that are folded to form.Described dipole antenna 1 and sleeve element antenna 2 are transversely respectively arranged at the both sides of the same face of printed circuit board (PCB) 3.
Described folding dipole antenna 1 is formed on printed circuit board (PCB) 3 by etching technics, and it includes the first radiation arm 11 and the second radiation arm 12 that longitudinally substantially arrange axisymmetricly in centre position along printed circuit board (PCB) 3.As shown in Figure 1, described first radiation arm 11 and all generally rectangular structure of the second radiation arm 12, and forming gap between the first radiation arm 11 and the second radiation arm 12, the feed point Q of dual-band antenna 100 is arranged at the end away from described first radiation arm 11 or the second radiation arm 12 in this gap of printed circuit board (PCB) 3.Described first radiation arm 11 includes the first parallel arms 110 of the longitudinal medial axis near printed circuit board (PCB) 3, along one end bending at a right angle of the first parallel arms 110 the first vertical arm 111 of vertically extending, parallel with described first parallel arms 110 and the close tip position that is positioned at described printed circuit board (PCB) 3 the second parallel arms 112 and vertically bending from described second parallel arms 112 extends and second vertical arm 113 parallel with described first vertical arm 111, described second vertical arm 113 does not constitute loop with the first parallel arms 110 Guan Bi, but leave one section of opening (non-label).Corresponding with axisymmetric second radiation arm 12 of described first radiation arm 11 include with described first parallel arms 110 by the 3rd parallel arms 120 of described clearance gap, parallel with described 3rd parallel arms 120 from vertical the 3rd vertical arm 121 bending and vertically extending of described 3rd parallel arms 120 and be positioned at printed circuit board (PCB) 3 close bottom the 4th parallel arms 122 and from the vertical bending of described 4th parallel arms 122 the 4th vertical arm 123 that vertically extension is parallel with described 3rd vertical arm 121.Described 4th vertical arm 123 does not also constitute loop with the 3rd parallel arms 120 Guan Bi, but leaves one end open (non-label).Two described openings can ensure that dipole antenna 1 normal operation.
Described sleeve element antenna 2 includes the first parallel arms 110 of the first radiation arm 11 from described dipole antenna 1 and to the bending of the other end (relative with the one end residing for the first vertical arm 111) one at a right angle the sleeve oscillator radiation arm 21 vertically extended to form, the grounding parts 22 of the 3rd parallel arms 120 other end of the second radiation arm 12 being integrally formed at described dipole antenna 1 and is welded in the coaxial welding end 4 of described sleeve oscillator radiation arm 21 and grounding parts 22.As it is shown in figure 1, described grounding parts 22 is parallel with the 3rd vertical arm 121.Described antenna feed point Q is between sleeve oscillator radiation arm 21 and grounding parts 22.Described coaxial welding end 4 includes being positioned at the inner wire 41 of innermost layer, the cladding inner insulating layer 42 of inner wire 41, the outer conductor 43 being positioned at outside inner insulating layer 42 and being coated with the external insulation layer 44 of whole outer conductor 43.During welding, described inner wire 41 is welded in sleeve oscillator radiation arm 21, and described outer conductor 43 is then welded in grounding parts 22.As seen from Figure 1, much wider than the transverse width of the first radiation arm 11 of described sleeve oscillator radiation arm 21 and dipole antenna 1 and the second radiation arm 12 of the transverse width of described grounding parts 22, so can strengthen the earthing effect of whole dual-band antenna 100, and then improve the work efficiency of antenna.The described vertical extension difference of sleeve oscillator radiation arm 21 is few generally equalized with described first vertical arm 111 apart from backward second vertical arm 113 direction bending, then extends and again vertically bends extension after described grounding parts 22 transverse width equidistance.
As it is shown in figure 1, the dipole antenna 1 of the present invention and sleeve element antenna 2 are separated by dotted line in figure to distinguish, but in fact do not have therebetween strict boundary.In figure, arrow points is the sense of current of dipole antenna 1, and when whole dual-band antenna transceiving radio frequency signal, described dipole antenna 1 works in 2.4GHz to 2.5GHz, and described sleeve element antenna 2 then works in 4.9GHz to 6.0GHz.
In sum, dual-band antenna 100 of the present invention is combined in same plane by dipole antenna 1 and sleeve element antenna 2, and the first and second radiation arms of described dipole antenna 1 are integrally formed with the radiation arm of sleeve element antenna 2 and grounding parts 22 respectively, effectively reduce the size of antenna, meeting antenna miniaturization trend, the dual-band antenna 100 length, width and height entirety of the present invention is only 18*10*1mm.And this dual-band antenna 100 simple in construction, it is easy to produce, indirectly improve the production efficiency of factory, saved manufacturing cost.Additionally, as in figure 2 it is shown, the return loss plot of the dual-band antenna 100 that it is the present invention.As seen from the figure, when the return loss of dual-band antenna 100 of the present invention is-10dB, its frequency band can reach 4GHz to 6.5GHz, there is good bandwidth, effectively raise the radiation frequency of antenna, work efficiency at 2.4GHz frequency band reaches more than 40%, and the efficiency at 5GHz frequency band reaches more than 50%.
The present invention also provides for a kind of wireless communication terminal (not shown), and including the dual-band antenna 100 for printed circuit board (PCB) 3, this dual-band antenna 100 has all features mentioned above, is not again repeating.This wireless communication terminal, by dual-band antenna 100 structure improved, not only effectively reduces the size of wireless communication terminal, and simple in construction, improve the work efficiency of wireless communication terminal simultaneously.
Although the present invention is with preferred embodiment openly as above; but it is not for limiting the present invention; any those skilled in the art are without departing from the spirit and scope of the present invention; may be by the method for the disclosure above and technology contents and technical solution of the present invention is made possible variation and amendment; therefore; every content without departing from technical solution of the present invention; according to any simple modification, equivalent variations and modification that above example is made by the technical spirit of the present invention, belong to the protection domain of technical solution of the present invention.
Claims (6)
1. a dual-band antenna, it is characterized in that, including the dipole antenna being bent to form and sleeve element antenna, described dipole antenna and sleeve element antenna are generally aligned in the same plane, described dual-band antenna also includes printed circuit board (PCB), described dipole antenna and sleeve element antenna are formed at the both sides of the same face of described printed circuit board (PCB), described dipole antenna includes the first radiation arm that longitudinally substantially arrange axisymmetricly in centre position along printed circuit board (PCB) and the second radiation arm, described first radiation arm and the second radiation arm are generally rectangular but be formed with opening, described sleeve element antenna includes the integral part of sleeve oscillator radiation arm in one end of the first radiation arm from described dipole antenna, from the integral part of grounding parts in one end of described second radiation arm and coaxial welding end.
2. dual-band antenna according to claim 1, it is characterized in that, first radiation arm of described dipole antenna and the second radiation arm are respectively provided with four arms vertically extended with horizontal expansion parallel between two, and in the arm of described vertical extension, the length than another one near sleeve oscillator one end is short.
3. dual-band antenna according to claim 1, it is characterised in that the transverse width of described grounding parts is wider than described sleeve oscillator radiation arm and the first radiation arm of dipole antenna and the transverse width of the second radiation arm.
4. dual-band antenna according to claim 1, it is characterized in that, described coaxial welding end includes being positioned at the inner wire of innermost layer, the cladding inner insulating layer of inner wire, the outer conductor being positioned at outside inner insulating layer and being coated with the external insulation layer of whole outer conductor from inside to outside respectively, described inner wire is welded in sleeve oscillator radiation arm, and described outer conductor is then welded in grounding parts.
5. a wireless communication terminal, it is characterized in that, including the dual-band antenna for printed circuit board (PCB), this dual-band antenna includes the dipole antenna and the sleeve element antenna that are bent to form, described dipole antenna and sleeve element antenna are generally aligned in the same plane, described dipole antenna includes the first radiation arm that longitudinally substantially arrange axisymmetricly in centre position along described printed circuit board (PCB) and the second radiation arm, described first radiation arm and the second radiation arm are generally rectangular but be formed with opening, described sleeve element antenna includes the integral part of sleeve oscillator radiation arm in one end of the first radiation arm from described dipole antenna, from the integral part of grounding parts in one end of described second radiation arm and coaxial welding end.
6. wireless communication terminal according to claim 5, it is characterised in that the transverse width of described grounding parts is wider than described sleeve oscillator radiation arm and the first radiation arm of dipole antenna and the transverse width of the second radiation arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110316110.5A CN102509855B (en) | 2011-10-18 | 2011-10-18 | Dual-band antenna and wireless communication terminal thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110316110.5A CN102509855B (en) | 2011-10-18 | 2011-10-18 | Dual-band antenna and wireless communication terminal thereof |
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| Publication Number | Publication Date |
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| CN102509855A CN102509855A (en) | 2012-06-20 |
| CN102509855B true CN102509855B (en) | 2016-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110316110.5A Active CN102509855B (en) | 2011-10-18 | 2011-10-18 | Dual-band antenna and wireless communication terminal thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109244657B (en) * | 2018-10-31 | 2023-12-15 | 深圳创维数字技术有限公司 | Printed antenna structure, PCB and electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5652598A (en) * | 1996-02-20 | 1997-07-29 | Trw, Inc. | Charge collector equipped, open-sleeve antennas |
| US5995061A (en) * | 1992-08-12 | 1999-11-30 | Schiller; Thomas H. | No loss, multi-band, adaptable antenna |
| US7164389B1 (en) * | 2003-10-21 | 2007-01-16 | R. A. Miller Industries, Inc. | High frequency broadband antenna |
| CN101877433A (en) * | 2009-04-30 | 2010-11-03 | 深圳富泰宏精密工业有限公司 | Multi-frequency antenna and wireless communication device applying same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6791506B2 (en) * | 2002-10-23 | 2004-09-14 | Centurion Wireless Technologies, Inc. | Dual band single feed dipole antenna and method of making the same |
| US7501991B2 (en) * | 2007-02-19 | 2009-03-10 | Laird Technologies, Inc. | Asymmetric dipole antenna |
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2011
- 2011-10-18 CN CN201110316110.5A patent/CN102509855B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5995061A (en) * | 1992-08-12 | 1999-11-30 | Schiller; Thomas H. | No loss, multi-band, adaptable antenna |
| US5652598A (en) * | 1996-02-20 | 1997-07-29 | Trw, Inc. | Charge collector equipped, open-sleeve antennas |
| US7164389B1 (en) * | 2003-10-21 | 2007-01-16 | R. A. Miller Industries, Inc. | High frequency broadband antenna |
| CN101877433A (en) * | 2009-04-30 | 2010-11-03 | 深圳富泰宏精密工业有限公司 | Multi-frequency antenna and wireless communication device applying same |
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| CN102509855A (en) | 2012-06-20 |
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