CN205319306U - Antenna element and base station antenna - Google Patents
Antenna element and base station antenna Download PDFInfo
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- CN205319306U CN205319306U CN201521039049.4U CN201521039049U CN205319306U CN 205319306 U CN205319306 U CN 205319306U CN 201521039049 U CN201521039049 U CN 201521039049U CN 205319306 U CN205319306 U CN 205319306U
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Abstract
The utility model provides an antenna element, includes radiation portion, feed inner core and ba lun, ba lunyu radiation portion links to each other, the feed inner core be used for with the coupling of radiation portion produces the radiation field. Ba lun includes base, topside and connects the base with a pair of side between the topside, radiation portion connects ba lun's topside, last being provided with of ba lun is cracked, the follow cracks the side orientation the inside of ba lun is extended, in order to adjust ba lun's impedance. According to the utility model discloses an antenna element can realize changing antenna element's impedance under the circumstances that does not change the ba lun height to optimization antenna element's standing wave and directional diagram bandwidth are with miniaturization, the lightweight that realizes base station antenna. The utility model provides an include antenna element's base station antenna.
Description
Technical field
This utility model relates to mobile communication technology, particularly relates to a kind of antenna element and antenna for base station.
Background technology
Antenna for base station at moving communicating field in occupation of very important status. And along with the development of mobile communication technology, multifrequency multi-mode antenna will be following development trend, especially into the LTE epoch, MIMO (Multiple-InputMultiple-Output, multiple-input and multiple-output) technology will be more universal, 2T4R, 4T4R will be upgraded to even to 8T8R, 16T16R by present 2T2R. This requires that base station possesses more antenna port, and namely the dipole subnumber of single column array can increase a lot, and this just brings new requirement to size and weight, thus while taking into account electrical specifications, miniaturization, lightweight become to become more and more important.
The coupling of S parameter (scattering parameter) is highly done in dipole many employings of prior art for the balun height of intermediate frequency 1/4 wavelength. The shortcoming of prior art is in that to realize specific function in the height limited, it is impossible to accomplish small-sized, lightweight.
Utility model content
Technical problem to be solved in the utility model is in that, there is provided a kind of antenna element and antenna for base station, it is possible to realize when not changing balun height, change the impedance of antenna element, thus optimizing standing wave and the directional diagram bandwidth of antenna element, to realize the miniaturization of antenna for base station, lightweight.
First aspect, this utility model provides a kind of antenna element, including Department of Radiation, feed inner core and balun, described balun is connected with described Department of Radiation, described feed inner core for coupling generation radiation field with described Department of Radiation, described balun includes base, top margin and the opposite side being connected between described base and described top margin, described Department of Radiation is connected to the top margin of described balun, described balun is provided with and cracks, described cracking extends from described side towards the inside of described balun, to regulate the impedance of described balun.
In the first possible implementation of first aspect, described in crack near described base arrange. In other embodiment, the position cracked can also be positioned at the position (middle part between top margin and base) in the middle of balun, or arranges near top margin.
The first possible implementation in conjunction with first aspect, in the embodiment that the second is possible, the described quantity cracked is a plurality of, and it is arranged on the said two side of described balun in the way of staggered, a described side is overlapping with the described stitched open part extended to the inside of described balun from side another described to cracking described in the inside extension of described balun from which, so that it is serpentine-like staggered to include the described a plurality of balun part cracked.
The first possible implementation in conjunction with first aspect, in the embodiment that the third is possible, the described quantity cracked is a plurality of, and on each described side, it being distributed described a plurality of arrangement of cracking in pectinate texture, the said two pectinate texture being separately positioned on said two side is arranged side by side and is isolated from each other.
In conjunction with the third possible implementation of first aspect, in the 4th kind of possible embodiment, crack described on said two side and be oppositely arranged one by one respectively, and relative two conllinear that crack being separately positioned on two on described side.
In conjunction with any one possible implementation in first to fourth kind of first aspect, in the 5th kind of possible embodiment, when described balun is vertically placed, the plurality of state that all extends horizontally of cracking.
In conjunction with the 5th kind of possible implementation of first aspect, in the 6th kind of possible embodiment, described antenna element also includes reflecting plate, and the base of described balun is mounted on described reflecting plate. In conjunction with the 6th kind of possible implementation of first aspect, in the 7th kind of possible embodiment, the quantity of described Department of Radiation is multiple, and the quantity of described balun is consistent with the quantity of described Department of Radiation, and the plurality of described Department of Radiation is centrosymmetric distribution.
The 7th kind of possible implementation in conjunction with first aspect, in the 8th kind of possible embodiment, each described Department of Radiation includes connecting portion, main part and two side plates, between described connecting portion and described main part and described balun, said two side plate is positioned at the both sides of described connecting portion and is connected to described balun, described main part includes the first main part and two the second main parts, described first main body section is in the side away from described balun of described connecting portion and coplanar with described connecting portion, said two the second main part lays respectively at the both sides of described first main part, the plane at the second main part place is perpendicular to described first main part and the plane at described connecting portion place.
Preferably, described first main part is " E " shape.
In a kind of possible embodiment, described first main part includes and described connecting portion is connected rectangular portion and be connected to the first ennations of three of the edge away from described connecting portion side of described rectangular portion interval arrangements each other.
In a kind of possible embodiment, described second main part includes linkage section, the second ennation, the 3rd ennation, the 4th ennation, the 5th ennation and the 6th ennation. Described linkage section and described 3rd ennation are spaced and are oppositely arranged, and described 3rd ennation and described 5th ennation are spaced and are oppositely arranged, and described 3rd ennation is between described linkage section and described 5th ennation. Described linkage section is connected to the first ennation of described first main part. Described second ennation is connected between described linkage section and described 3rd ennation and is connected to described rectangular portion. Described 4th ennation is positioned at one end of described 3rd ennation and described 5th ennation, and part is connected between described 3rd ennation and described 5th ennation, remaining part the 4th ennation is positioned at described 5th ennation side away from described 3rd ennation. Described 4th ennation entirety is that craspedodrome strip and relatively described 3rd ennation and described 5th ennation tilt to extend so that the angle between described 4th ennation and described 3rd ennation and described 5th ennation is acute angle. Described 6th ennation is connected to described 5th ennation one end away from described 4th ennation, and extends towards the direction away from described 3rd ennation of described 5th ennation.
Preferably, wherein three described first ennations that interval arranges each other are arranged in parallel.
Preferably, described linkage section, described 3rd ennation and described 5th ennation are arranged in parallel.
Preferably, described second ennation is vertically connected between described linkage section and described 3rd ennation.
Preferably, described 4th ennation and described 3rd ennation are collectively forming " 7 " font.
Second aspect, it is provided that a kind of antenna for base station, including the antenna element described in aforementioned any one.
Compared to prior art, this utility model by arranging the form cracked in balun, shape and the structure of balun can be changed, thus changing the impedance of balun, and then its function transmitting the signal of telecommunication can be changed, the distribution of impedance of antenna element can be affected, under equal balun height simultaneously, antenna element can be carried out more optimized choice, so that antenna element can miniaturization, lightweight.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic perspective view according to a kind of antenna element of the present utility model;
Fig. 2 is the floor map of the antenna for base station of the antenna element including Fig. 1.
Fig. 3 is the schematic perspective view of Fig. 1, and wherein 3 antenna elements according to Fig. 1 are linear array arrangement;
Fig. 4 is the floor map including the antenna for base station according to another kind of antenna element of the present utility model;
Fig. 5 is the schematic perspective view of Fig. 4, and wherein 3 antenna elements according to Fig. 4 are linear array arrangement.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments. Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
It should be noted that balun is the transliteration of English balanced-to-unblanced transformer (balance-unbalance), its effect is the impedance matching realized between coaxial cable and dipole antenna and balances coupling. Principle is by antenna theory, dipole antenna belongs to equilibrated type antenna, and coaxial cable belongs to unbalanced line, if being directly connected to, then the crust of coaxial cable just have high frequency electric to flow through (by coaxial cable transmission principle, high frequency electric should in cable internal flow, crust is screen layer, it is there is no electric current), so, the radiation of antenna will be affected. Therefore it is necessary to add balun between antenna and cable, the current choke flowed into outside cable shield is fallen, say, that the high frequency electric flowing through cable shield crust from oscillator is blocked.
With reference to Fig. 1, antenna element 101 includes 11, four baluns 12 of four Departments of Radiation and two feed inner cores 13, is wherein oppositely arranged between two in flat each balun 12, and two feed inner cores 13 of orthogonal setting are positioned at the space that four flat board baluns 12 surround. Feed inner core 13 can carry out coupling with corresponding Department of Radiation 11 thus forming radiation field or receiving signal of communication.The plate-shaped structure of balun 12, including base, top margin and be connected to the opposite side between base and top margin. the base of balun 12 is for being connected with reflecting plate, and Department of Radiation 11 is connected to the top margin of balun 12. feed inner core 13 can extend to top edge from the base of balun 12. it can be seen that, each balun 12 is provided with cracks 121, in present embodiment, crack and 121 be positioned at the balun 12 section below part of base (namely near), in other embodiment, crack 121 positions that can also be located close to top margin or the centre position between top margin and base. in embodiment shown in Fig. 1, one balun 12 includes two and cracks 121, and two crack and 121 extend internally from the two of balun 12 side edge respectively, article two, crack and 121 partly overlap, namely a described side is overlapping with the described stitched open part extended to the inside of described balun from side another described to cracking described in the inside extension of described balun from which, two 121 vertical centrages all striding across in balun 12 that crack (refer to and be parallel to side and divide a centrage on top margin and base equally) can also be expressed as, so that include these two crack 121 balun part serpentine-like staggered. specifically, 121 bases being parallel to balun 12 of cracking are arranged, and in other words, if balun 12 is placed in vertical state, the direction of 121 extensions of cracking is in the horizontal plane. certainly, crack 121 quantity can also be three or more than three, multiple cracking 121 is arranged on two sides of balun 12 in the way of staggered.
Crack 121 shapes that can change balun 12 and structure in balun 12, the resistance of balun 12 and capacitive reactance can change, thus changing the impedance of balun 12, and then its function transmitting the signal of telecommunication can be changed, finally can affect the distribution of impedance of antenna element 101.
As it is shown in figure 1, the structure of each Department of Radiation 11 of antenna element 101 is identical with shape. Department of Radiation 11 includes main part A, connecting portion B and two side plate C, connecting portion B are connected between main part A and balun 12, and two side plate C are positioned at the both sides of connecting portion B, and are connected to balun 12. In present embodiment, connecting portion B is trapezoidal, and connecting portion B and the main part A limit being connected is trapezoidal long limit, and the limit that connecting portion B is connected with balun 12 is trapezoidal minor face. Main part A includes the first main part A1With two the second main part A2. First main part A1It is positioned at the side away from balun 12 of connecting portion B, and coplanar with connecting portion B. Two the second main part A2Lay respectively at the first main part A1Both sides, in present embodiment, the second main part A2The plane at place is perpendicular to described first main part A1Plane with connecting portion B place. First main part A1In " E " shape, the first main part A1Including with the connecting portion B rectangular portion A being connected11And it is connected to rectangular portion A11The first ennation A of three of the edge away from connecting portion B side interval arrangements each other12. Second main part A2Including linkage section A21, the second ennation A22, the 3rd ennation A23, the 4th ennation A24, the 5th ennation A25With the 6th ennation A26. Linkage section A21With the 3rd ennation A23It is spaced and is oppositely arranged, the 3rd ennation A23With the 5th ennation A25It is spaced and is oppositely arranged, the 3rd ennation A23It is positioned at linkage section A21With the 5th ennation A25Between. Linkage section A21It is connected to the first main part A1The first ennation A12. Second ennation A22It is connected to linkage section A21With the 3rd ennation A23Between and be connected to rectangular portion A11.4th ennation A24It is positioned at the 3rd ennation A23With the 5th ennation A25One end, and part be connected to the 3rd ennation A23With the 5th ennation A25Between, remaining part the 4th ennation A24It is positioned at the 5th ennation A25Away from described 3rd ennation A23Side. 4th ennation A24Overall in craspedodrome strip and relative 3rd ennation A23With the 5th ennation A25Tilt to extend so that the 4th ennation A24With the 3rd ennation A23With the 5th ennation A25Between angle be acute angle. 6th ennation A26It is connected to the 5th ennation A25Away from the 4th ennation A24One end, and towards the 5th ennation A25Away from the 3rd ennation A23Direction extend.
Specifically, three the first ennation A that interval arranges each other12Arranged in parallel. Linkage section A21, the 3rd ennation A23With the 5th ennation A25Arranged in parallel. Second ennation A22It is vertically connected on linkage section A21With the 3rd ennation A23Between. 4th ennation A24With the 3rd ennation A23It is collectively forming " 7 " font.
Easy to understand, Department of Radiation 11 can also be other structures and shape.
As illustrated in fig. 1, it is preferred that trapezoidal connecting portion B includes breach B1, and the part feeding inner core 13 can be accommodated in this breach B1In, couple between feed inner core 13 and Department of Radiation 11, thus forming radiation field or receiving signal of communication. Additionally, in the present embodiment, be provided with gap between four Departments of Radiation 11 of antenna element 101, it is ensured that the independence of each Department of Radiation 11, facilitate the radiation of each Department of Radiation 11 self and the coupling of voltage standing wave ratio so that do not interfere between Department of Radiation 11.
With reference to Fig. 2 and Fig. 3, antenna for base station 100 includes 3 antenna elements 101 arranged in linear array, reflecting plate 102 and two reflection side plates 103, and two reflection side plates 103 vertically connect reflecting plate 102. Described reflecting plate 102 can also as a part for antenna element 101. The mode that antenna element 101 is coordinated with the through hole (not shown) on reflecting plate 102 by the lobe (not shown) arranged in each balun 12 is connected with reflecting plate 102. Main feeder can be passed through between these 3 antenna elements 101 be connected. Owing to the position of each unit 101 and the amplitude of feed current and phase place all can independently adjust, this just makes antenna for base station 100 have various different function, and these functions are that individual antenna cannot realize. The antenna element 101 being appreciated that on this antenna for base station 100 can be 2,4 or more, and multiple antenna element 101 can also be face battle array arrangement. Wherein reflecting plate 102 and two reflection side plates 103 can reflect and focused antenna signal, not only greatly strengthen the receiving ability of antenna, also act as stop, shielding from other electric wave of back (opposite direction) simultaneously, reduce these electric waves interference effect to received signal. Each parts of antenna element 101 can be made up of metal materials such as panel beatings, it is also possible to the metallic object wrapped up by plastics and other chemical materialss is made. And reflecting plate 102 and two reflection side plates 103 can be made up of the material of reflection electromagnetic wave, for instance metal material. Moreover it is preferred that each Department of Radiation 11 and coupled balun 12 can be one-body molded, the concordance of antenna element so can be provided, and fabrication cycle can also be shortened and reduce cost of manufacture.
Fig. 4 and Fig. 5 is shown respectively plane and the schematic perspective view of the antenna for base station 200 including the antenna element 201 with another kind of slot opening form design, in this antenna for base station 200, a plurality of 221 positions being positioned close to balun 22 base of cracking, and a plurality of cracking 221 extends internally from two sides of balun 22, on each side, a plurality of 221 arrangements in pectination of cracking, form pectinate texture, and two pectinate textures being respectively provided on two sides of balun 22 are arranged side by side and are isolated from each other.It is to say, a plurality of 221 vertical centrages all not striding across in balun 22 that crack. Cracking on two sides 221 is oppositely arranged respectively one by one, and relative two 221 conllinear that crack being respectively provided on two sides, in present embodiment, when described balun is vertically placed, crack and 221 all extend horizontally state, and they are co-located on a horizontal plane. Owing to, in this antenna for base station 200, only 221 forms of cracking therein are different from the slot opening form in antenna for base station described in Fig. 2 and Fig. 3 100, and therefore other structures of this antenna for base station 200, feature and principle can refer to discussion above, and therefore not to repeat here.
If balun is vertically placed, base is positioned on horizontal plane, cracking in above-mentioned embodiment is all extend in the horizontal direction, in other embodiment, the bearing of trend cracked can also be changed, crack and can tilt certain angle with horizontal direction, extend from the side of balun towards the inside of described balun as long as crack, namely can realize changing the impedance of balun, and then the function of its transmission signal of telecommunication can be changed. Specifically, owing to electromagnetic wave is to radiate along the outward flange of balun, crack and be located on side, the setting cracked makes the side edge shape of balun be changed, namely balun shape is changed, balun forms irregular continuous print face, so the path being provided with the signal of telecommunication of the balun cracked obtains extension. The path of the signal of telecommunication is extended the resistance that can cause balun and capacitive reactance can change, thus changing the impedance of balun. Finally can affect the distribution of impedance of antenna element, therefore the standing wave when antenna pattern bandwidth of antenna element can be changed. The application need not regulate the height of balun, when equal balun height, it is possible to the radiation characteristic of antenna element is optimized, therefore can achieve miniaturization and the lightweight of antenna for base station.
The antenna for base station of the present invention can pass through sheet metal component die cast, and its material can also be plastics and the metallic object of other chemical materialss parcel.
Above disclosed it is only this utility model preferred embodiment, certainly the interest field of this utility model can not be limited with this, one of ordinary skill in the art will appreciate that all or part of flow process realizing above-described embodiment, and according to the equivalent variations that this utility model claim is made, still fall within the scope that utility model contains.
Claims (10)
1. an antenna element, including Department of Radiation, feed inner core and balun, described balun is connected with described Department of Radiation, described feed inner core for coupling generation radiation field with described Department of Radiation, it is characterised in that described balun includes base, top margin and the opposite side being connected between described base and described top margin, described Department of Radiation is connected to the top margin of described balun, described balun is provided with and cracks, described in crack from described side towards the inside of described balun extend, to regulate the impedance of described balun.
2. antenna element as claimed in claim 1, it is characterised in that described in crack and arrange near described base.
3. antenna element as claimed in claim 2, it is characterized in that, the described quantity cracked is a plurality of, and it is arranged on the said two side of described balun in the way of staggered, a described side is overlapping with the described stitched open part extended to the inside of described balun from side another described to cracking described in the inside extension of described balun from which, so that it is serpentine-like staggered to include the described a plurality of balun part cracked.
4. antenna element as claimed in claim 2, it is characterized in that, the described quantity cracked is a plurality of, and is distributed described a plurality of arrangement of cracking on each described side in pectinate texture, and the said two pectinate texture being separately positioned on said two side is arranged side by side and is isolated from each other.
5. antenna element as claimed in claim 4, it is characterised in that crack described on said two side and be oppositely arranged one by one respectively, and relative two conllinear that crack being separately positioned on two on described side.
6. the antenna element as described in any one of claim 2-5, it is characterised in that when described balun is vertically placed, the plurality of state that all extends horizontally of cracking.
7. antenna element as claimed in claim 6, it is characterised in that described antenna element also includes reflecting plate, and the base of described balun is mounted on described reflecting plate.
8. antenna element as claimed in claim 7, it is characterised in that the quantity of described Department of Radiation is multiple, and the quantity of described balun is consistent with the quantity of described Department of Radiation, the plurality of described Department of Radiation is centrosymmetric distribution.
9. antenna element as claimed in claim 8, it is characterized in that, each described Department of Radiation includes connecting portion, main part and two side plates, between described connecting portion and described main part and described balun, said two side plate is positioned at the both sides of described connecting portion and is connected to described balun, described main part includes the first main part and two the second main parts, described first main body section is in the side away from described balun of described connecting portion and coplanar with described connecting portion, said two the second main part lays respectively at the both sides of described first main part, the plane at the second main part place is perpendicular to described first main part and the plane at described connecting portion place.
10. an antenna for base station, it is characterised in that include the antenna element as described in any one of claim 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521039049.4U CN205319306U (en) | 2015-12-14 | 2015-12-14 | Antenna element and base station antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521039049.4U CN205319306U (en) | 2015-12-14 | 2015-12-14 | Antenna element and base station antenna |
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| CN205319306U true CN205319306U (en) | 2016-06-15 |
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| CN201521039049.4U Active CN205319306U (en) | 2015-12-14 | 2015-12-14 | Antenna element and base station antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299626A (en) * | 2016-10-08 | 2017-01-04 | 京信通信技术(广州)有限公司 | A kind of antenna element and antenna for base station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299626A (en) * | 2016-10-08 | 2017-01-04 | 京信通信技术(广州)有限公司 | A kind of antenna element and antenna for base station |
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