CN205039253U - Electrified becket antenna structure who feels - Google Patents
Electrified becket antenna structure who feels Download PDFInfo
- Publication number
- CN205039253U CN205039253U CN201520667444.0U CN201520667444U CN205039253U CN 205039253 U CN205039253 U CN 205039253U CN 201520667444 U CN201520667444 U CN 201520667444U CN 205039253 U CN205039253 U CN 205039253U
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- antenna
- inductance
- becket
- pcb board
- antenna structure
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Abstract
The utility model discloses an electrified becket antenna structure who feels, including a seamless becket, the first side inboard of becket is equipped with the antenna ground point, the second side inboard of becket is equipped with the antenna feed point, becket second side inboard is equipped with the inductance that one end and becket are connected, the inductance is located the top that antenna feed is ordered. The utility model discloses simple structure, can cover whole honeycomb frequency channel, the introduction of inductance can improve the matching performance of antenna high band, through the position of adjusting the inductance or the frequency of operation that the antenna can be adjusted to the property value.
Description
Technical field
The utility model relates to the communications field, particularly relates to a kind of wireloop antenna structure with inductance.
Background technology
As an attractive design, current a part of smart mobile phone has adopted becket shell, and described becket can be used as antenna and uses, thus saves interior of mobile phone space, for exploitation and the improvement of other functions.As namely Chinese utility model patent CN203617416U discloses a kind of seamless metal ring antenna for mobile phone, comprise housing, the periphery of described housing arranges the peripheral housing member of conduction, and the inside of described housing arranges other circuit modules.But, in order to avoid PCB is to the interference of wireloop antenna, ensure that antenna normally can work at Whole frequency band (698MHz960MHz and 1710MHz-2690MHz), the gap of more than 2mm is needed between usual PCB and antenna, thus can reduce the size of mobile phone display screen, and the demand of this and current smart mobile phone screen enlarging is contradiction.Therefore, be necessary that making some to wireloop antenna structure improves, to meet the designing requirement of current smart mobile phone.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of seamless metal loop antenna structure that can cover whole cellular band.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of wireloop antenna structure with inductance, comprise a seamless metal ring, antenna ground point is provided with inside the first side of described becket, antenna feed point is provided with inside the second side of described becket, be provided with the inductance that one end is connected with becket inside described becket second side, described inductance is positioned at the top of described antenna feed point.
The beneficial effects of the utility model are: structure is simple, can cover whole cellular band, and the introducing of inductance can improve the matching performance of antenna high band, can be adjusted the operating frequency of antenna by the position or parameter value regulating inductance.
Accompanying drawing explanation
Fig. 1 a is the antenna structure view of the utility model embodiment one;
Fig. 1 b is the left view of antenna structure shown in Fig. 1 a;
Fig. 1 c is the right view of antenna structure shown in Fig. 1 a;
Fig. 2 is the S parameter analog result schematic diagram of the antenna structure of the utility model embodiment one;
Fig. 3 is the matching network circuit schematic diagram of the utility model embodiment two;
Fig. 4 is the comparison schematic diagram of the antenna reflection coefficient of the utility model embodiment one and embodiment two;
Fig. 5 is the comparison schematic diagram of the antenna global radiation efficiency of the utility model embodiment one and embodiment two;
Fig. 6 a is the antenna structure view of the utility model embodiment three;
Fig. 6 b is the left view of antenna structure shown in Fig. 6 a;
Fig. 6 c is the right view of antenna structure shown in Fig. 6 a;
Label declaration:
0, the origin of coordinates; 1, becket; 2, antenna ground point; 3, antenna feed point; 4, inductance; 5, ground plate; 6, upper headroom district; 7, lower headroom district; 8, annulus; 9a-9d, earthing strip; 10, matching network; 11, antenna port.
Embodiment
By describing technology contents of the present utility model in detail, realized object and effect, accompanying drawing is coordinated to be explained below in conjunction with execution mode.
The design of the utility model most critical is: between seamless metal loop antenna and pcb board, be provided with an inductance, by changing the high frequency performance of its position or parameter value adjustable antenna; Four angles of the ground plate of PCB form earthing strip, the cut-off frequency of low-frequency range can be reduced, improve antenna performance.
Please refer to Fig. 1 a-1c, a kind of wireloop antenna structure with inductance, comprise a seamless metal ring, antenna ground point is provided with inside the first side of described becket, antenna feed point is provided with inside the second side of described becket, be provided with the inductance that one end is connected with becket inside described becket second side, described inductance is positioned at the top of described antenna feed point.
From foregoing description, the beneficial effects of the utility model are: structure is simple, can cover whole cellular band, the introducing of inductance can improve the matching performance of antenna high band, can be adjusted the operating frequency of antenna by the position or parameter value regulating inductance.
Further, described becket inside comprises a pcb board, and the annulus width between described becket and pcb board is 1mm, and described annulus is filled with PC-ABS material; Described inductance is positioned at described annulus.
Further, described pcb board to comprise on a ground plate, headroom district and once headroom district, the other end of described inductance is connected with described ground plate.
Seen from the above description, because inductance reduces the interference of pcb board to wireloop antenna, the gap therefore between pcb board and becket can be accomplished less, adds screen size.
Further, the ground plate of described pcb board comprises multiple earthing strip, lays respectively at the both sides in headroom district and/or lower headroom district.
Further, described earthing strip is 4, lays respectively at the both sides in headroom district and lower headroom district, and one of them earthing strip is L shape.
Seen from the above description, the introducing of earthing strip can reduce the cut-off frequency of low-frequency range, expands the working band of antenna.
Further, described antenna feed point connects an antenna matching network.
Further, the distance between described antenna ground point and pcb board base is greater than the distance between described antenna feed point and pcb board base.
Seen from the above description, the low frequency matching performance that matching network can improve antenna is increased.
Embodiment one
Please refer to Fig. 1 a-1c, wherein Fig. 1 a is the antenna structure view of the present embodiment one, Fig. 1 b is the left view of Fig. 1 a antenna structure, Fig. 1 b is the right view of Fig. 1 a antenna structure, embodiment one of the present utility model is: a kind of wireloop antenna structure with inductance, is applicable to the mobile devices such as mobile phone, palmtop PC, iPAD, comprises the seamless metal ring 1 as antenna, be provided with pcb board inside becket 1, described pcb board comprises ground plate 5, upper headroom district 6 and lower headroom district 7; Annulus 8 is formed between becket 1 and pcb board, the width in described gap, namely the spacing between becket and pcb board is 0.8-1.2mm, preferred 1mm, farthest can expand the size of display screen like this, meet the demand of consumer to large scale screen, be filled with PC-ABS material in described annulus 8 using as antenna box; Antenna ground point 2 is provided with in annulus inside the first side of described becket 1, antenna feed point 3 is provided with in annulus inside the second side of described becket 1, described becket is divided into two parts by described antenna ground point 2 and antenna feed point 3, preferably, the distance between described antenna ground point and pcb board base is greater than the distance between described antenna feed point and pcb board base; Also be provided with an inductance 4 in annulus 8 inside described second side, described inductance 4 is connected between the ground plate 5 of becket 1 and pcb board, and is positioned at the top of antenna feed point 3.
An inductance 4 be electrically connected with the ground plate of becket and pcb board is introduced in the gap of the utility model between becket with pcb board, the interference of pcb board to antenna can be reduced, therefore the width of annulus 8 can be reduced to about 1mm, improves screen size to greatest extent.Simultaneously described inductance can make antenna be mated at whole high band (2220MHz-2540MHz), change inductance position or parameter value can change the operating frequency of antenna.Illustrate with a concrete experiment case study below, using the lower left corner of pcb board as the origin of coordinates 0, Width is X-direction, and length direction is Y-direction, and thickness direction is Z-direction.Described pcb board width s is 70mm, length l is 135mm, and thickness h is then 5mm.Antenna ground point 2 is positioned at Y-direction 59mm place, and antenna feed point is positioned at Y-direction 17mm place, and inductance is positioned at Y-direction 20mm place, and upper headroom district and lower headroom district length dimension are in the Y direction respectively 8mm and 10mm.Figure 2 shows that the analog result schematic diagram of the S parameter of the present embodiment antenna structure when inductance 4 gets different parameters value, can see, when there is no inductance 4 or inductance value is 2nH, a part of S parameter of high band (highband), at below 6dB, can not mate whole high band well; When inductance value is 10nH, then improve to some extent, only have at about 2.2GHz a bit of a little less than 6dB; When inductance value is 6nH, then the S parameter of whole high band is all at more than 6dB, visible, can regulate the high frequency matching performance of antenna by changing inductance value.
Embodiment two
Please refer to Fig. 3, embodiment two of the present utility model adds a matching network 10 on the basis of embodiment one, described matching network is arranged between antenna feed point 3 and pcb board, comprise the first electric capacity C1, the second electric capacity C2, the first inductance L 1 and the second inductance L 2, described first electric capacity C1 and the second electric capacity C2 is connected in series, and one end connects antenna feed point 3, wherein antenna feed point 3 is preferably 50 ohm of ports, the antenna port 11 of other end connecting PCB board; First inductance L 1 one end connects the common end of the first electric capacity C1 and the second electric capacity C2, other end ground connection; The antenna port 11 of one end connecting PCB board of the second inductance L 2, other end ground connection.
Be illustrated in figure 4 the comparison schematic diagram of the antenna reflection coefficient of the utility model embodiment one (without matching network) and embodiment two (having matching network), greatest irradiation is reached in order to make antenna, reflection coefficient is the smaller the better, and return loss is then just in time contrary with reflection coefficient.Therefore, when not forming standing wave, return loss should be large as far as possible with the greatest irradiation realizing antenna, and this can be defined by voltage standing wave ratio VSWR or compare.Usually, the voltage standing wave ratio (reflection coefficient-6dB or return loss 6dB) of 3:1 is acceptable matching performance.As can be seen from Figure 4, when there is no matching network, although antenna can cover almost whole high band 1710-2690MHz, then have in low-frequency range and cannot mate greatly; After adding matching network, then can mate almost whole cellular band, only the return loss of a very little part is at about 5dB.
Be illustrated in figure 5 the comparison schematic diagram of the antenna global radiation efficiency of the utility model embodiment one (without matching network) and embodiment two (having matching network), usual antenna global radiation efficiency should reach low-frequency range-4dB at clear space, high band-3dB, as seen from Figure 5, except high frequency is a bit of, there is matching network and all can reach good radiation efficiency without during matching network.
For the seamless metal loop antenna of single feed point, want to mate low-frequency range (698MHz-960MHz) and high band (1710MHz-2690MHz) is a challenge simultaneously, improve the matching performance of high band by the inductance introduced between becket and ground plate in embodiment one, and low-frequency range can be made also to reach good matching performance by a simple matching network in embodiment two, achieve the high-performance of whole cellular band.
Embodiment three
Please refer to Fig. 6 a-6c, embodiment three of the present utility model further increases earthing strip 9a-9d on the basis of embodiment one or embodiment two, described earthing strip is a part for ground plate 5, is positioned on four angles of ground plate 5, and the outstanding both sides extending to headroom district and lower headroom district.Preferably, earthing strip 9a and 9b being positioned at both sides, headroom district 5 is vertical bar shaped, and its size is in the Y direction consistent with upper headroom district, such as 8mm, and the size in X-direction is then such as 2mm; Earthing strip 9c on the left of lower headroom district is L shape, the width of each section of L shape is such as 2mm, the long limit of L shape extends along the Y direction, and size is in the Y direction more smaller than lower headroom district, be such as 9mm, minor face then along the X direction downwards the right side in headroom district extend, and size is in the X direction such as 4mm; Earthing strip 9d on the right side of lower headroom district is vertical bar shaped, and its size is in the Y direction more smaller than lower headroom district, and such as 9mm, the size in X-direction is then such as 2mm.
By introducing above-mentioned earthing strip, the cut-off frequency of antenna can be made closer to 698MHz, and experiment shows, cut-off frequency can be migrated to 775MHz by 810MHz by the introducing of earthing strip, expands the low frequency bandwidth of antenna, further increases antenna performance.
It should be noted that, earthing strip also only can have three or two, such as can only arrange in the earthing strip 9c of L shape and earthing strip 9a, 9b, 9d of vertical bar shaped arbitrary one or two.
In sum, the wireloop antenna structure of the band inductance that the utility model provides, have structure simple, cover the features such as whole cellular band, wherein regulate the position of inductance or parameter value can improve high band matching performance, matching network then can improve the matching performance of low-frequency range; The introducing of earthing strip then can reduce cut-off frequency further, expands Antenna Operation frequency range.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalents utilizing the utility model specification and accompanying drawing content to do; or be directly or indirectly used in relevant technical field, be all in like manner included in scope of patent protection of the present utility model.
Claims (7)
1. the wireloop antenna structure with inductance, comprise a seamless metal ring, antenna ground point is provided with inside the first side of described becket, antenna feed point is provided with inside the second side of described becket, it is characterized in that: be provided with the inductance that one end is connected with becket inside described becket second side, described inductance is positioned at the top of described antenna feed point.
2. the wireloop antenna structure of band inductance according to claim 1, is characterized in that: described becket inside comprises a pcb board, and the annulus width between described becket and pcb board is 1mm, and described annulus is filled with PC-ABS material; Described inductance is positioned at described annulus.
3. the wireloop antenna structure of band inductance according to claim 2, is characterized in that: described pcb board to comprise on a ground plate, headroom district and once headroom district, the other end of described inductance is connected with described ground plate.
4. the wireloop antenna structure of band inductance according to claim 3, is characterized in that: the ground plate of described pcb board comprises multiple earthing strip, lays respectively at the both sides in headroom district and/or lower headroom district.
5. the wireloop antenna structure of band inductance according to claim 4, is characterized in that: described earthing strip is 4, lays respectively at the both sides in headroom district and lower headroom district, and one of them earthing strip is L shape.
6. the wireloop antenna structure of the band inductance according to any one of claim 1-5, is characterized in that: described antenna feed point connects an antenna matching network.
7. the wireloop antenna structure of the band inductance according to any one of claim 2-5, is characterized in that: the distance between described antenna ground point and pcb board base is greater than the distance between described antenna feed point and pcb board base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520667444.0U CN205039253U (en) | 2015-08-31 | 2015-08-31 | Electrified becket antenna structure who feels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520667444.0U CN205039253U (en) | 2015-08-31 | 2015-08-31 | Electrified becket antenna structure who feels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205039253U true CN205039253U (en) | 2016-02-17 |
Family
ID=55298125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520667444.0U Withdrawn - After Issue CN205039253U (en) | 2015-08-31 | 2015-08-31 | Electrified becket antenna structure who feels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205039253U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140646A (en) * | 2015-08-31 | 2015-12-09 | 深圳市信维通信股份有限公司 | Metal loop antenna structure with inductor |
| CN107104284A (en) * | 2017-05-10 | 2017-08-29 | 江苏明联电子科技有限公司 | All-metal ring narrow frame 4G intelligent machine antennas |
| CN107464654A (en) * | 2017-09-27 | 2017-12-12 | 广州赛宝计量检测中心服务有限公司 | A kind of broadband high stable inductor in high frequency |
-
2015
- 2015-08-31 CN CN201520667444.0U patent/CN205039253U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140646A (en) * | 2015-08-31 | 2015-12-09 | 深圳市信维通信股份有限公司 | Metal loop antenna structure with inductor |
| CN105140646B (en) * | 2015-08-31 | 2018-10-12 | 深圳市信维通信股份有限公司 | Wireloop antenna structure with inductance |
| CN107104284A (en) * | 2017-05-10 | 2017-08-29 | 江苏明联电子科技有限公司 | All-metal ring narrow frame 4G intelligent machine antennas |
| CN107464654A (en) * | 2017-09-27 | 2017-12-12 | 广州赛宝计量检测中心服务有限公司 | A kind of broadband high stable inductor in high frequency |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160217 Effective date of abandoning: 20181012 |