CN105048070B - Wireloop antenna structure with meander line - Google Patents
Wireloop antenna structure with meander line Download PDFInfo
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- CN105048070B CN105048070B CN201510430918.4A CN201510430918A CN105048070B CN 105048070 B CN105048070 B CN 105048070B CN 201510430918 A CN201510430918 A CN 201510430918A CN 105048070 B CN105048070 B CN 105048070B
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- meander line
- antenna
- pcb board
- becket
- wireloop
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Abstract
The wireloop antenna structure with meander line that the invention discloses a kind of, including a seamless metal ring, antenna ground point is equipped on the inside of the first side of the becket, antenna feed point is equipped on the inside of the second side of the becket, the first side of the becket includes the first meander line, second side includes the second meander line, and first meander line and the second meander line include multiple openings, and the direction of adjacent apertures is opposite；The antenna ground point is located at the top of the first meander line, and the antenna feed point is located at the lower section of second side meander line.By forming meandering line structure in the side of seamless metal ring, the high performance antenna structure for covering entire cellular band can be obtained.
Description
Technical field
The present invention relates to the communications field more particularly to a kind of wireloop antenna structures with meander line.
Background technique
The basic demand of antenna for mobile phone is can to cover entire cellular band (698-960MHz low-frequency range and 1710-
2690MHz high frequency band), while should also meet the needs of modern cell phones inner space miniaturization.It is seamless to meet the demand
Becket antenna for mobile phone has been suggested and has used, as Chinese utility model patent CN203617416U disclose it is a kind of seamless
Becket antenna for mobile phone, including shell, the conductive peripheral housing member of the periphery setting of the shell, the inside setting of the shell
Other circuit modules.However, the interference in order to avoid PCB circuit board to wireloop antenna, between usual PCB circuit board and antenna
The gap of 2mm or more is needed, so that the size of mobile phone display screen can be reduced, and the demand of this and current smart phone screen enlarging is
It is contradictory.Therefore, it is necessary to some improvement be made to wireloop antenna structure, to meet the design requirement of current smart phone.
Summary of the invention
The technical problem to be solved by the present invention is to：A kind of wireloop antenna knot that can cover entire cellular band is provided
Structure.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：A kind of becket day with meander line
Cable architecture, including a seamless metal ring, are equipped with antenna ground point on the inside of the first side of the becket, and the of the becket
Antenna feed point is equipped on the inside of dual side-edge, the first side of the becket includes the first meander line, and second side includes second
Meander line, first meander line and the second meander line include multiple openings, and the direction of adjacent apertures is opposite；The antenna ground
Point is located at the top of the first meander line, and the antenna feed point is located at the lower section of second side meander line.
The beneficial effects of the present invention are：By forming meandering line structure in the side of seamless metal ring, can be covered
Cover the high performance antenna structure of entire cellular band.
Detailed description of the invention
Fig. 1 is the antenna structure view of the embodiment of the present invention one；
Fig. 2 is the matching network circuit figure of the embodiment of the present invention two；
Fig. 3 is the comparison schematic diagram of the antenna reflection coefficient of the embodiment of the present invention one and embodiment two；
Fig. 4 is the comparison schematic diagram of the antenna global radiation efficiency of the embodiment of the present invention one and embodiment two；
Label declaration：
0, coordinate origin；1, seamless metal ring；2, antenna ground point；3, antenna feed point；4, earth plate；5, annulus
Gap；6, upper clearance zone；7, lower clearance zone；8, the first meander line；9, the second meander line；10, matching network；11, antenna port.
Specific embodiment
To explain the technical content, the achieved purpose and the effect of the present invention in detail, below in conjunction with embodiment and cooperate attached
Figure is explained.
The design of most critical of the present invention is:In the side of seamless metal ring, multiple openings, the direction of adjacent apertures are set
On the contrary, forming meander line part.
Please refer to Fig. 1, a kind of wireloop antenna structure with meander line, including a seamless metal ring, the becket
First side on the inside of be equipped with antenna ground point, be equipped with antenna feed point, the metal on the inside of the second side of the becket
The first side of ring includes the first meander line, and second side includes the second meander line, first meander line and the second meander line
Including multiple openings, the direction of adjacent apertures is opposite；The antenna ground point is located at the top of the first meander line, the antenna feed
Electricity point is located at the lower section of second side meander line.
As can be seen from the above description, the beneficial effects of the present invention are：By forming meander line in the side of seamless metal ring
Structure can obtain the high performance antenna structure for covering entire cellular band.
It further, include a pcb board inside the becket, the gap between the becket and pcb board is 1mm,
And the gap filling has PC-ABS material.
It further, include an earth plate, clearance zone and once clearance zone on one on the pcb board.
Further, the width of the pcb board is 70mm, length 135mm.
Further, the distance between the antenna ground point and pcb board bottom edge be 59mm, the antenna feed point with
The distance between pcb board bottom edge is 17mm.
Further, the antenna feed point connects an antenna matching network.
Seen from the above description, increasing match circuit can further improve antenna low-frequency range performance.
Further, the spacing of adjacent apertures is 2.5mm.
Embodiment one
Fig. 1 is please referred to, wherein left side is front view, centre is left view, and right side is right view, the embodiment of the present invention one
For：A kind of wireloop antenna structure with meander line is suitable for the mobile devices such as mobile phone, palm PC, iPAD, including conduct
The seamless metal ring 1 of antenna is equipped with pcb board on the inside of becket 1, and annular gap 5, the seam are formed between becket and pcb board
The width of gap is 1mm, can expand the size of display screen to the greatest extent in this way, meet consumer to the need of large scale screen
It asks, filled with PC-ABS material using as antenna box in the gap；The pcb board include earth plate 4, upper clearance zone 6 and under
Clearance zone 7；The first side interior annular gap of the becket is equipped with antenna ground point 2, the second side of the becket
Interior annular gap is equipped with antenna feed point 3, and the becket is divided into two by the antenna ground point 2 and antenna feed point 3
Part；Becket below the antenna ground point includes the first meander line 8, and the becket above antenna feed point includes second
Meander line 9, first meander line and the second meander line include multiple openings, and the opening can reduce pcb board to becket
Interference, the opening can by cut becket be made, adjacent apertures direction on the contrary, be usually open it is more, interference
Smaller, the performance of antenna is better, but more on the one hand influences that are open are beautiful, on the other hand also influence the structural strength of becket,
It is therefore preferred that the first meander line includes 3 openings, the second meander line includes 2 openings.
Meander line part is arranged in becket two sides in the present invention, can introduce induction reactance while reducing interference
High capacitive reactance (capacitive when (inductive reactance) is to compensate no meander line in the frequency of matching difference
Reactance), so that the position for changing meander line part can change day but also antenna can match entire cellular band
The matching performance of line.Experiment shows the matching requirement for selecting suitable position that can meet high and low frequency section simultaneously.Below with
One specific experiment case study illustrates that, using the lower left corner of pcb board as coordinate origin 0, width direction is X-direction, length side
To for Y-direction, thickness direction is Z-direction.The pcb board width b is 70mm, and length l is 135mm, and thickness h is then 5mm.Antenna
Grounding point 2 is located at Y-direction 59mm, and antenna feed point is located at Y-direction 17mm, and upper clearance zone and lower clearance zone are in the Y direction
Length is respectively 12mm and 10mm.The multiple opening is respectively 2.5mm and 3.5mm with the size of Z-direction in the Y direction, and phase
The spacing of neighbour's opening is 2.5mm.After being provided with meander line part, the low frequency band frequency of antenna 6dB return loss is from 821MHz
It migrates to 727MHz, and in the high band of 2220MHz-2540MHz, no meander line, antenna can not be matched, and be provided with complications
It can be then well matched with behind line part.
Embodiment two
Referring to figure 2., the embodiment of the present invention two increases a matching network 10 on the basis of example 1, and described
Distribution network is arranged between antenna feed point 3 and pcb board, including first capacitor C1, the second capacitor C2, the first inductance L1 and second
Inductance L2, the first capacitor C1 and the second capacitor C2 are connected in series, and one end connects antenna feed point 3, and wherein antenna is fed
The preferably 50 ohm of ports of point 3, the antenna port 11 of other end connecting PCB board；First one end inductance L1 connects first capacitor C1
With the common end of the second capacitor C2, other end ground connection；The antenna port 11 of one end connecting PCB board of second inductance L2, the other end
Ground connection.
It is illustrated in figure 3 the antenna-reflected of the embodiment of the present invention one (no matching network) and embodiment two (having matching network)
The comparison schematic diagram of coefficient, in order to make antenna reach greatest irradiation, reflection coefficient is the smaller the better, return loss then just with reflection
Coefficient is opposite.Therefore, in the case where not forming standing wave, return loss answers the greatest irradiation as big as possible to realize antenna,
This can be defined or be compared by voltage standing wave ratio VSWR.In general, 3:1 voltage standing wave ratio (reflection coefficient -6dB or return loss
6dB) it is acceptable matching performance.From figure 3, it can be seen that when there is no matching network, although antenna can cover entire high frequency
Section 1710-2690MHz, but low-frequency range then some can not match, i.e. 697-787MHz sections；Increase matching network with
Afterwards, then entire cellular band can be matched.
It is illustrated in figure 4 the total spoke of antenna of the embodiment of the present invention one (no matching network) and embodiment two (having matching network)
The comparison schematic diagram of efficiency is penetrated, usual antenna global radiation efficiency should reach low-frequency range -4dB, high band -3dB in clear space,
From fig. 4 it can be seen that having matching network other than high frequency is a bit of and can reach radiation effect well without matching network
Rate.
In conclusion the wireloop antenna structure provided by the invention with meander line, covering simple with structure is entirely
The features such as cellular band, by adjusting the position of meander line, the matching performance of adjustable antenna；By increasing matching network electricity
Road can further enhance the matching performance in low-frequency range.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalents made by bright specification and accompanying drawing content are applied directly or indirectly in relevant technical field, similarly include
In scope of patent protection of the invention.
Claims (6)
1. a kind of wireloop antenna structure with meander line, including a seamless metal ring, in the first side of the becket
Side is equipped with antenna ground point, is equipped with antenna feed point on the inside of the second side of the becket, it is characterised in that：The becket
First side include the first meander line, second side include the second meander line, first meander line and the second meander line packet
Multiple openings are included, the direction of adjacent apertures is opposite；The antenna ground point is located at the top of the first meander line, the antenna feed
Point is located at the lower section of second side meander line；It further include matching network, the matching network is arranged in antenna feed point and seamless gold
Belong between the pcb board in ring, matching network includes first capacitor, the second capacitor, the first inductance and the second inductance, first electricity
Hold and the second capacitor is connected in series, first capacitor connects antenna feed point, the antenna port of the second capacitance connection pcb board；First
Inductance one end connects the common end of first capacitor and the second capacitor, first inductance other end ground connection；One end of second inductance connects
The antenna port of pcb board, second inductance other end ground connection.
2. the wireloop antenna structure according to claim 1 with meander line, it is characterised in that：Inside the becket
Including a pcb board, the gap between the becket and pcb board is 1mm, and the gap filling has PC-ABS material.
3. the wireloop antenna structure according to claim 2 with meander line, it is characterised in that：It is wrapped on the pcb board
Include an earth plate, clearance zone and once clearance zone on one.
4. the wireloop antenna structure according to claim 2 or 3 with meander line, it is characterised in that：The pcb board
Width is 70mm, length 135mm.
5. the wireloop antenna structure according to claim 4 with meander line, it is characterised in that：The antenna ground point
The distance between pcb board bottom edge is 59mm, and the distance between the antenna feed point and pcb board bottom edge are 17mm.
6. the wireloop antenna structure according to claim 1 with meander line, it is characterised in that：The spacing of adjacent apertures
For 2.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510430918.4A CN105048070B (en) | 2015-07-21 | 2015-07-21 | Wireloop antenna structure with meander line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510430918.4A CN105048070B (en) | 2015-07-21 | 2015-07-21 | Wireloop antenna structure with meander line |
Publications (2)
| Publication Number | Publication Date |
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| CN105048070A CN105048070A (en) | 2015-11-11 |
| CN105048070B true CN105048070B (en) | 2018-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510430918.4A Active CN105048070B (en) | 2015-07-21 | 2015-07-21 | Wireloop antenna structure with meander line |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105591200B (en) * | 2016-01-06 | 2018-05-01 | 上海斐讯数据通信技术有限公司 | Antenna and mobile terminal based on simple metal frame |
| CN108461907A (en) * | 2018-03-23 | 2018-08-28 | 北京小米移动软件有限公司 | Terminal device |
| CN112713384A (en) * | 2020-12-09 | 2021-04-27 | 宇龙计算机通信科技(深圳)有限公司 | Antenna structure and mobile terminal |
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| CN101667681A (en) * | 2008-09-05 | 2010-03-10 | 大学共同利用机关法人自然科学研究机构 | Antenna array |
| CN201503912U (en) * | 2009-10-20 | 2010-06-09 | 深圳市中新联光盘有限公司 | PFID UHF optical disc label antenna |
| CN103700941A (en) * | 2013-12-20 | 2014-04-02 | 惠州硕贝德无线科技股份有限公司 | Diversity reception antenna of terminal |
| CN204144417U (en) * | 2014-05-27 | 2015-02-04 | 普尔思（苏州）无线通讯产品有限公司 | A kind of seamless metal ring mobile phone LTE-4G antenna |
| CN204303980U (en) * | 2014-12-25 | 2015-04-29 | 斯凯科斯电子(深圳)有限公司上海分公司 | Seamless metal loop antenna structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203260717U (en) * | 2013-03-19 | 2013-10-30 | 上海安费诺永亿通讯电子有限公司 | Antenna based on metal annular structure |
| CN104425894A (en) * | 2013-08-21 | 2015-03-18 | 耀登科技股份有限公司 | Multifrequency antenna, and mobile communication apparatus with multifrequency antenna |
| CN203617416U (en) * | 2013-11-01 | 2014-05-28 | 普尔思（苏州）无线通讯产品有限公司 | Seamless metal ring cell phone antenna |
| US9197270B2 (en) * | 2013-11-27 | 2015-11-24 | Sony Corporation | Double ring antenna with integrated non-cellular antennas |
| CN204885417U (en) * | 2015-07-21 | 2015-12-16 | 深圳市信维通信股份有限公司 | Becket antenna structure with meander line |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101667681A (en) * | 2008-09-05 | 2010-03-10 | 大学共同利用机关法人自然科学研究机构 | Antenna array |
| CN201503912U (en) * | 2009-10-20 | 2010-06-09 | 深圳市中新联光盘有限公司 | PFID UHF optical disc label antenna |
| CN103700941A (en) * | 2013-12-20 | 2014-04-02 | 惠州硕贝德无线科技股份有限公司 | Diversity reception antenna of terminal |
| CN204144417U (en) * | 2014-05-27 | 2015-02-04 | 普尔思（苏州）无线通讯产品有限公司 | A kind of seamless metal ring mobile phone LTE-4G antenna |
| CN204303980U (en) * | 2014-12-25 | 2015-04-29 | 斯凯科斯电子(深圳)有限公司上海分公司 | Seamless metal loop antenna structure |
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| CN105048070A (en) | 2015-11-11 |
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