CN102509855A - Duel-frequency antenna and wireless communication terminal thereof - Google Patents
Duel-frequency antenna and wireless communication terminal thereof Download PDFInfo
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- CN102509855A CN102509855A CN2011103161105A CN201110316110A CN102509855A CN 102509855 A CN102509855 A CN 102509855A CN 2011103161105 A CN2011103161105 A CN 2011103161105A CN 201110316110 A CN201110316110 A CN 201110316110A CN 102509855 A CN102509855 A CN 102509855A
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Abstract
The invention discloses a duel-frequency antenna and a wireless communication terminal thereof. The duel-frequency antenna disclosed by the invention comprises a dipole antenna and a sleeve element antenna, which are formed by bending and are positioned in the same plane. According to the duel-frequency antenna disclosed by the invention, the dipole antenna and the sleeve element antenna are combined in the same plane, and first and second radiation arms of the dipole antenna are integrated with a radiation arm and a grounded part of the sleeve element antenna respectively, so that the size of the duel-frequency antenna is effectively reduced to accord with a miniaturization trend of antenna; moreover, the duel-frequency antenna is simple in structure and easy in production, thus the production efficiency of a factory is indirectly increased, and the manufacturing cost is saved. Besides, according to the duel-frequency antenna, the bandwidth of the antenna is greatly through a method for stimulating a variety of resonance modes, and the radiation frequency of the antenna is effectively increased.
Description
Technical field
The present invention relates to field of wireless communication, relate in particular to a kind of dual-band antenna that is applied to field of wireless communication.
Background technology
Antenna is the critical elements in the wireless communication terminal, and the example of wireless communication terminal comprises mobile phone, computer, STB, PDA(Personal Digital Assistant), e-book, multimedia player, broadcast receiver etc.Antenna in the wireless communication terminal serves as the air interface that is used to receive and dispatch radio frequency (RF) ripple.
Dipole antenna is a kind of as antenna, and to have a gain high, in light weight, simple in structure, stable and reliable for performance because of it, good seal performance, and institute takes up space advantage such as little and is used widely.The Chinese invention patent of for example being applied for by Israel Galtronics Ltd. in the prior art discloses CN 1625821A number and discloses a kind of multiband sleeve-dipole antenna; This dipole antenna comprises: the elongated shape inner conductor that axially is provided with usually; This elongated shape inner conductor has first end and second end, and is connected to modulating signal source at its first end place; Usually the middle conductor that axially is provided with, this middle conductor is provided with respect to this inner conductor usually coaxially, and ground connection; Usually the first outer sleeve conductor that axially is provided with, this first outer sleeve conductor are provided with respect to this inner conductor and this middle conductor usually coaxially; With the common second outer sleeve conductor with first end and second end that axially is provided with, this second outer sleeve conductor is provided with respect to this inner conductor and this middle conductor usually coaxially.
Yet dipole antenna configuration of the prior art is complicated, and it is big to take up room, the trend toward miniaturization of incompatibility wireless communication terminal, and also existing dipole antenna is narrower because of its frequency band, has influenced the radiation efficiency of antenna greatly.
Be with, necessary dual-band antenna of the prior art is improved, with deficiency or the defective that remedies prior art.
Summary of the invention
The purpose of this invention is to provide a kind of dual-band antenna, it has not only effectively reduced the size of antenna through improved antenna structure, and simple in structure, has improved the radiation efficiency of antenna simultaneously.
For reaching above-mentioned purpose, the present invention provides a kind of dual-band antenna, and it comprises dipole antenna and the sleeve element antenna that is bent to form, and said dipole antenna and sleeve element antenna are positioned at same plane.
Further, said dual-band antenna also comprises printed circuit board (PCB), and said dipole antenna and sleeve element antenna are formed at the both sides of the same one side of said printed circuit board (PCB).
Further, said dipole antenna comprises first radiation arm and second radiation arm of arranging axisymmetricly along vertical cardinal principle centre position of printed circuit board (PCB), and said first radiation arm and second radiation arm are rectangular substantially but be formed with opening.
Further, said sleeve element antenna comprises from the integrally formed sleeve oscillator radiation arm of an end of first radiation arm of said dipole antenna, from an end of said second radiation arm integrally formed grounding parts and coaxial welding end.
Further, first radiation arm of said dipole antenna and second radiation arm all have four arms of parallel in twos vertical extension or horizontal expansion, and the length than another one near sleeve oscillator one end in the arm of said vertical extension is short.
Further, the transverse width of said grounding parts is wideer than the transverse width of first radiation arm of said sleeve oscillator radiation arm and dipole antenna and second radiation arm.
Further; Said coaxial welding end comprises the inner wire that is positioned at innermost layer from inside to outside respectively, coats the inner insulating layer of inner wire, is positioned at outer outer conductor of inner insulating layer and the external insulation layer that coats whole outer conductor; Said inner wire is welded in sleeve oscillator radiation arm, and said outer conductor then is welded in grounding parts.
Another object of the present invention provides wireless communication terminal, and it has not only effectively reduced the size of wireless communication terminal through improved antenna structure, and simple in structure, has improved the operating efficiency of wireless communication terminal simultaneously.
For realizing above-mentioned purpose; The present invention also can adopt following scheme: a kind of wireless communication terminal; Comprise a double frequency antenna that is used for printed circuit board (PCB), this dual-band antenna comprises dipole antenna and the sleeve element antenna that is bent to form, and said dipole antenna and sleeve element antenna are positioned at same plane.
Compared with prior art, the present invention has the following advantages:
Dual-band antenna of the present invention is combined in same plane through dipole antenna and sleeve element antenna; And first and second radiation arms of said dipole antenna are integrally formed with the radiation arm and the grounding parts of sleeve element antenna respectively, and the size of having dwindled antenna effectively meets antenna miniaturization trend; And it is simple in structure; Produce easily, improved the production efficiency of factory indirectly, practiced thrift manufacturing cost.Dual-band antenna of the present invention has in addition greatly increased the bandwidth of antenna through the method that excites multiple mode of resonance, effectively raises the radiation frequency of antenna.
Description of drawings
Fig. 1 is the plane graph of dual-band antenna of the present invention.
Fig. 2 is the return loss plot of dual-band antenna of the present invention.
Embodiment
For make above-mentioned purpose of the present invention, feature and advantage can be more obviously understandable, does detailed explanation below in conjunction with the accompanying drawing specific embodiments of the invention.
Set forth detail in the following description so that make much of the present invention.But the present invention can be different from alternate manner described here and implements with multiple, and those skilled in the art can do similar popularization under the situation of intension of the present invention.Therefore the present invention does not receive the restriction of following disclosed embodiment; Such as being the scheme characteristic of example explanation dual-band antenna of the present invention with the PCB antenna among the hereinafter embodiment; Yet should be clear and definite; The characteristic that PCB antenna among the embodiment is possessed also is applicable to the antenna of other type, such as not adopting PCB etc.
As shown in Figure 1, it is the plane graph of dual-band antenna of the present invention.Dual-band antenna 100 of the present invention is one to be formed at the printed antenna of printed circuit board (PCB) 3, and said dual-band antenna 100 comprises dipole antenna 1 and the sleeve element antenna 2 that is folded to form.Said dipole antenna 1 and the horizontal both sides that are arranged at the same one side of printed circuit board (PCB) 3 respectively, sleeve element antenna 2 edges.
Said folding dipole antenna 1 is formed on the printed circuit board (PCB) 3 through etching technics, and it comprises first radiation arm 11 and second radiation arm 12 of arranging axisymmetricly along vertical cardinal principle centre position of printed circuit board (PCB) 3.As shown in Figure 1; Said first radiation arm 11 and second radiation arm 12 be the rectangular structure of cardinal principle all; And form the gap between first radiation arm 11 and second radiation arm 12, the feedback point Q of dual-band antenna 100 is arranged at the end away from said first radiation arm 11 or second radiation arm 12 in this gap of printed circuit board (PCB) 3.Said first radiation arm 11 comprise first parallel arms 110 near vertical medial axis of printed circuit board (PCB) 3, along an end of first parallel arms 110 meet at right angles bending and the first vertical arm 111 that vertically extends, parallel with said first parallel arms 110 and be positioned at said printed circuit board (PCB) 3 vertically bend extension and the second vertical arm 113 parallel near second parallel arms 112 of tip position and from said second parallel arms 112 with the said first vertical arm 111; The said second vertical arm 113 does not constitute loops with first parallel arms, 110 closures, but leaves one section opening (not label).Corresponding with axisymmetric second radiation arm 12 of said first radiation arm 11 comprise with said first parallel arms 110 by the 3rd parallel arms 120 of said clearance gap, from the 120 vertical bendings of said the 3rd parallel arms and the 3rd vertical arms 121 that vertically extend, parallel with said the 3rd parallel arms 120 and be positioned at printed circuit board (PCB) 3 near the 4th parallel arms 122 of bottom and from the also vertical extension of said the 4th parallel arms 122 vertical bendings four vertical arm 123 parallel with the said the 3rd vertical arm 121.The said the 4th vertical arm 123 does not also constitute loops with the 3rd parallel arms 120 closures, but leaves an end opening (not label).Described two openings can guarantee dipole antenna 1 operate as normal.
Said sleeve element antenna 2 comprises from first parallel arms 110 of first radiation arm 11 of said dipole antenna 1 to the bending of the other end (relative with the first vertical arm 111 residing ends) one that meets at right angles and the sleeve oscillator radiation arm 21 that vertically extends to form, grounding parts 22 and the coaxial welding end 4 that is welded in said sleeve oscillator radiation arm 21 and grounding parts 22 of the 3rd parallel arms 120 other ends of second radiation arm 12 that be integrally formed at said dipole antenna 1.As shown in Figure 1, said grounding parts 22 is parallel with the 3rd vertical arm 121.Said antenna feed point Q is between sleeve oscillator radiation arm 21 and grounding parts 22.Said coaxial welding end 4 comprises the inner wire 41 that is positioned at innermost layer, coat the inner insulating layer 42 of inner wire 41, be positioned at outer outer conductor 43 of inner insulating layer 42 and the external insulation layer 44 that coats whole outer conductor 43.During welding, said inner wire 41 is welded in sleeve oscillator radiation arm 21, and 43 of said outer conductors are welded in grounding parts 22.Visible from Fig. 1; The transverse width of said grounding parts 22 is than wide many of the transverse width of first radiation arm 11 of said sleeve oscillator radiation arm 21 and dipole antenna 1 and second radiation arm 12; Can strengthen the ground connection effect of whole dual-band antenna 100 like this, and then improve the operating efficiency of antenna.Said sleeve oscillator radiation arm 21 vertical extensions almost bend to second vertical arm 113 directions after the equidistances with the said first vertical arm 111 substantially, vertically bending extension once more after extension and the said grounding parts 22 transverse width equidistances then.
As shown in Figure 1, dipole antenna of the present invention 1 and sleeve element antenna 2 for differentiation through dotted line among the figure separately but in fact do not have strict boundary between the two.Arrow points is the sense of current of dipole antenna 1 among the figure, and when whole dual-band antenna was received and dispatched radiofrequency signal, said dipole antenna 1 worked 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 through dipole antenna 1 and sleeve element antenna 2; And first and second radiation arms of said dipole antenna 1 are integrally formed with the radiation arm and the grounding parts 22 of sleeve element antenna 2 respectively; Dwindled the size of antenna effectively, met antenna miniaturization trend, the high integral body of dual-band antenna 100 length and width of the present invention is merely 18*10*1mm.And this dual-band antenna 100 is simple in structure, produces easily, has improved the production efficiency of factory indirectly, has practiced thrift manufacturing cost.In addition, as shown in Figure 2, it is the return loss plot of dual-band antenna 100 of the present invention.Visible from figure; The return loss of dual-band antenna 100 of the present invention is-during 10dB; Its frequency band can reach 4GHz to 6.5GHz, has frequency bandwidth preferably, effectively raises the radiation frequency of antenna; Operating efficiency at the 2.4GHz frequency band reaches more than 40%, reaches more than 50% in the efficient of 5GHz frequency band.
The present invention also provides a kind of wireless communication terminal (not shown), comprises a double frequency antenna 100 that is used for printed circuit board (PCB) 3, and this dual-band antenna 100 has all characteristics mentioned above, is not giving unnecessary details once more.This wireless communication terminal has not only effectively reduced the size of wireless communication terminal through improved dual-band antenna 100 structures, and simple in structure, has improved the operating efficiency of wireless communication terminal simultaneously.
Though the present invention with preferred embodiment openly as above; But it is not to be used for limiting the present invention; Any those skilled in the art are not breaking away from the spirit and scope of the present invention; Can utilize the method and the technology contents of above-mentioned announcement that technical scheme of the present invention is made possible change and modification, therefore, every content that does not break away from technical scheme of the present invention; To any simple modification, equivalent variations and modification that above embodiment did, all belong to the protection range of technical scheme of the present invention according to technical spirit of the present invention.
Claims (10)
1. a dual-band antenna is characterized in that, comprises the dipole antenna and the sleeve element antenna that are bent to form, and said dipole antenna and sleeve element antenna are positioned at same plane.
2. dual-band antenna according to claim 1 is characterized in that said dual-band antenna also comprises printed circuit board (PCB), and said dipole antenna and sleeve element antenna are formed at the both sides of the same one side of said printed circuit board (PCB).
3. dual-band antenna according to claim 2; It is characterized in that; Said dipole antenna comprises first radiation arm and second radiation arm of arranging axisymmetricly along vertical cardinal principle centre position of printed circuit board (PCB), and said first radiation arm and second radiation arm are rectangular substantially but be formed with opening.
4. dual-band antenna according to claim 3; It is characterized in that said sleeve element antenna comprises from the integrally formed sleeve oscillator radiation arm of an end of first radiation arm of said dipole antenna, from an end of said second radiation arm integrally formed grounding parts and coaxial welding end.
5. dual-band antenna according to claim 4; It is characterized in that; First radiation arm of said dipole antenna and second radiation arm all have four arms of parallel in twos vertical extension or horizontal expansion, and the length than another one near sleeve oscillator one end in the arm of said vertical extension is short.
6. dual-band antenna according to claim 5 is characterized in that, the transverse width of said grounding parts is wideer than the transverse width of first radiation arm of said sleeve oscillator radiation arm and dipole antenna and second radiation arm.
7. dual-band antenna according to claim 4; It is characterized in that; Said coaxial welding end comprises the inner wire that is positioned at innermost layer from inside to outside respectively, coats the inner insulating layer of inner wire, is positioned at outer outer conductor of inner insulating layer and the external insulation layer that coats whole outer conductor; Said inner wire is welded in sleeve oscillator radiation arm, and said outer conductor then is welded in grounding parts.
8. a wireless communication terminal is characterized in that, comprises a double frequency antenna that is used for printed circuit board (PCB), and this dual-band antenna comprises dipole antenna and the sleeve element antenna that is bent to form, and said dipole antenna and sleeve element antenna are positioned at same plane.
9. wireless communication terminal according to claim 8; It is characterized in that; Said dipole antenna comprises first radiation arm and second radiation arm of arranging axisymmetricly along vertical cardinal principle centre position of said printed circuit board (PCB); Said first radiation arm and second radiation arm are rectangular substantially but be formed with opening, and said sleeve element antenna comprises from the integrally formed sleeve oscillator radiation arm of an end of first radiation arm of said dipole antenna, from an end of said second radiation arm integrally formed grounding parts and coaxial welding end.
10. wireless communication terminal according to claim 9 is characterized in that, the transverse width of said grounding parts is wideer than the transverse width of first radiation arm of said sleeve oscillator radiation arm and dipole antenna and 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 true CN102509855A (en) | 2012-06-20 |
| CN102509855B 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109244657A (en) * | 2018-10-31 | 2019-01-18 | 深圳创维数字技术有限公司 | Printed antenna structure, pcb board and electronic equipment |
Citations (6)
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|---|---|---|---|---|
| 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 |
| US20050001777A1 (en) * | 2002-10-23 | 2005-01-06 | Shanmuganthan Suganthan | Dual band single feed dipole antenna and method of making the same |
| US7164389B1 (en) * | 2003-10-21 | 2007-01-16 | R. A. Miller Industries, Inc. | High frequency broadband antenna |
| CN101617439A (en) * | 2007-02-19 | 2009-12-30 | 莱尔德技术股份有限公司 | Asymmetric dipole 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 |
-
2011
- 2011-10-18 CN CN201110316110.5A patent/CN102509855B/en active Active
Patent Citations (6)
| 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 |
| US20050001777A1 (en) * | 2002-10-23 | 2005-01-06 | Shanmuganthan Suganthan | Dual band single feed dipole antenna and method of making the same |
| US7164389B1 (en) * | 2003-10-21 | 2007-01-16 | R. A. Miller Industries, Inc. | High frequency broadband antenna |
| CN101617439A (en) * | 2007-02-19 | 2009-12-30 | 莱尔德技术股份有限公司 | Asymmetric dipole 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109244657A (en) * | 2018-10-31 | 2019-01-18 | 深圳创维数字技术有限公司 | Printed antenna structure, pcb board and electronic equipment |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN102509855B (en) | 2016-07-27 |
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