CN204793177U - Double polarization loop antenna - Google Patents
Double polarization loop antenna Download PDFInfo
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- CN204793177U CN204793177U CN201520484383.4U CN201520484383U CN204793177U CN 204793177 U CN204793177 U CN 204793177U CN 201520484383 U CN201520484383 U CN 201520484383U CN 204793177 U CN204793177 U CN 204793177U
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- loop antenna
- lun
- arm
- polarization loop
- antenna
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Abstract
The utility model discloses a double polarization loop antenna, including ring irradiator, feed network, ba lun group and reflecting plate, directly over the ring irradiator included four radiation arms and places the reflecting plate parallelly in, four radiation arm symmetries set up. Compared with the prior art, because the utility model discloses double polarization loop antenna's ring irradiator includes the radiation arm of four symmetry settings, utilizes ring antenna radiation arm electric current voltage distribution's symmetry and orthogonality principle, and to single polarization loop antenna execution multiple spot excitation alright realization double polarization loop antenna, and this double polarization loop antenna is unanimous basically with the irradiator size of single polarization loop antenna. Furthermore, the utility model discloses a double polarization loop antenna compares with the known base station antenna unit of compriseing four half -wave doublets, its fungible tradition antenna, just the utility model discloses double polarization loop antenna's irradiator size is littleer, and transverse dimension is about 50% of traditional antenna, simultaneously, the utility model discloses a double polarization loop antenna simple structure, easily manufacturing and shaping.
Description
Technical field
The utility model relates to antenna of mobile communication base station technical field, relates more specifically to a kind of dual polarization loop antenna.
Background technology
TDD/FDD-LTE mixed networking has become the main flow networking mode of 4G networking, has both built the Appropriate application of internet resource, and has increased the intensive construction of Internet resources newly and run the basic Consensus having become mobile communication carrier.Antenna-feedback system altogether bar tower is installed altogether, multi-mode networks shares and share antenna feeder resource, become the focus of industrial circle common concern, the most effective approach of realizing this goal is exactly that the electricity of antenna tunes into the melt, broadband, miniaturized, multi-modulation scheme.
A kind of antenna element that prior art provides is arranged in order into bowl-shape or bucket-shaped or other shape in side by four symmetrical dipoles, and two relative symmetrical dipoles are one group, and one group of homophase or anti-phase feed form the low-frequency antenna unit of ± 45 ° of polarized radiation ripples between two.But the antenna element frequency bandwidth characteristics that prior art provides is narrower, unit radiant body profile is comparatively large, section is higher, and the antenna array size of unit composition is larger thus.
Utility model content
In view of prior art exists above-mentioned technical problem, the purpose of this utility model is to provide a kind of novel dual polarization loop antenna, the alternative traditional antenna of this dual polarization loop antenna, and be different from the structure of traditional antenna, in addition, less, the structure of the radiant body size of this dual polarization loop antenna simple, be easy to manufacture and shaping.
For achieving the above object, the utility model provides a kind of dual polarization loop antenna, comprise ring radiant body, feeding network, Ba Lun group and reflecting plate, ring radiant body comprises four radiation arms and is placed in directly over reflecting plate, four radiation arms are symmetrical arranged, Ba Lun group comprises four groups of Ba Lun, and each group Ba Lun comprises a pair Ba Lun arm, the upper end of each Ba Lun arm is connected with radiation arm, be fixed on reflecting plate after the lower end gathering of eight Ba Lun arms and ensure that the plane parallel of ring radiant body is in reflecting plate, feeding network is connected respectively with radiation arm and Ba Lun arm.
Compared with prior art, ring radiant body due to the utility model dual polarization loop antenna comprises four symmetrically arranged radiation arms, the symmetry utilizing loop antenna radiation arm current/voltage to distribute and orthogonality principle, excitation is implemented to single polarization loop antenna and just can realize dual polarization loop antenna, and the radiant body size of this dual polarization loop antenna and single polarization loop antenna is basically identical.In addition, dual polarization loop antenna of the present utility model is compared with the known base station antenna unit be made up of four half-wave doublets, its alternative traditional antenna, and the radiant body size of the utility model dual polarization loop antenna is less, lateral dimension is about 50% of traditional antenna, meanwhile, dual polarization loop antenna novel structure of the present utility model simple, be easy to manufacture and shaping.
Particularly, between adjacent radiation arm, be provided with gap, and this gap or be long narrow square or for ladder gradual change shape or for rectigradation shape or for curve gradual change shape.
Preferably, ring radiant body has symmetrical structure, and ring radiant body is Q-RING, circular rings or polygon ring.
Particularly, four coplanar settings of radiation arm or antarafacial are arranged, and four radiation arms are symmetrical in 90 ° successively in ring radiant body place plane.
Particularly, the average length of radiation arm is about the wavelength corresponding to 1/4th design frequencies.
Particularly, ring radiant body and the disposable die cast of Ba Lun group; Or the disposable die cast of Ba Lun group, ring radiant body PCB method the two solder bond again after realizing.
In the utility model embodiment, Ba Lun arm is electric conductor, and the upper end of two Ba Lun arms of each group Ba Lun connects with the abutting end of corresponding radiation arm respectively, is fixed on reflecting plate after the lower end gathering of eight Ba Lun arms by conduction fixed disk.
Particularly, feeding network is radio frequency cable type or micro strip line type or band line style or theirs is combined, feeding network comprises two group of branches networks, two group of branches networks respectively correspondence provide the ± input and output of 45 ° of polarized signals, namely the common port of each branching networks is signal input port, and end is signal output port.
Particularly, the cable outer conductor of cable-type feeding network is layed in the U-type groove of arbitrary Ba Lun arm, and cable outer conductor end is welded in arbitrary Ba Lun arm or radiation arm to form distributing point, the cable core of cable-type feeding network crosses over the Ba Lun arm at cable outer conductor place or radiation arm is connected with another Ba Lun arm or radiation arm.
By following description also by reference to the accompanying drawings, the utility model will become more clear, and these accompanying drawings are for explaining embodiment of the present utility model.
Accompanying drawing explanation
Figure 1A is the utility model dual polarization loop antenna principle key diagram--single feed point excitation single polarization side loop antenna.
Figure 1B is the utility model dual polarization loop antenna principle key diagram--double-fed point excitation single polarization side loop antenna.
Fig. 1 C is the utility model dual polarization loop antenna principle key diagram--four feedback point excitation dual polarization side loop antennas.
Fig. 2 A is the utility model dual polarization loop antenna first embodiment--narrow arm/microbrachia circular loop antenna structural representation.
Fig. 2 B is the utility model dual polarization loop antenna first embodiment--narrow arm/microbrachia circular loop antenna structure vertical view.
Fig. 2 C is the utility model dual polarization loop antenna first embodiment--wide arm side loop antenna structural representation.
Fig. 2 D is the utility model dual polarization loop antenna first embodiment--wide arm circular loop antenna structural representation.
Fig. 2 E is the utility model dual polarization loop antenna first embodiment--wide arm octacyclic rings antenna structure view.
Fig. 2 F is the utility model dual polarization loop antenna first embodiment--wide arm circumference mating type loop antenna structural representation.
Fig. 3 A is the utility model dual polarization loop antenna second embodiment--Shared aperture Double-frequency antenna structure schematic diagram.
Fig. 3 B is the utility model dual polarization loop antenna second embodiment--Shared aperture Double-frequency antenna structure vertical view.
Embodiment
With reference now to accompanying drawing, describe embodiment of the present utility model, element numbers similar in accompanying drawing represents similar element.
In order to understand the utility model better, please refer to Figure 1A to 1C to be described the principle of the utility model dual polarization loop antenna.To be positioned at directly over metallic reflection plate and anchor ring reflected in parallel plate, girth are all-wave side's loop antenna of a wavelength, during the excitation of drift angle F1 single feed point on it CURRENT DISTRIBUTION as shown in Figure 1A, radiation+45 ° of polarized waves; As shown in Figure 1B, increase by the second feedback point in the symmetrical drift angle F2 of F1, due to the symmetry of loop antenna arm CURRENT DISTRIBUTION, then the new feedback point F2 introduced meets the boundary condition of former field, that is to say that the excitation of double-fed point has identical radiation characteristic with all-wave side's loop antenna that single feed point encourages; Further, as shown in Figure 1 C, two feedback point F3 and F4 are increased again symmetrically in two other drift angle place, because feedback point F3/F4 is positioned at current node/voltage amplitude point place corresponding to feedback point F1/F2, therefore F3/F4 and F1/F2 is independent of each other in theory, above-mentioned F1/F2 homophase or anti-phase excitation can provide+45 ° of polarized radiation ripples, and F3/F4 then provides-45 ° of polarized radiation ripples.
Because the electric current on loop antenna arm and voltage's distribiuting have orthogonality, utilize this principle and get suitable loop antenna radiant body girth, not only can realize the same polarization radiated wave of double excitation, the orthogonal polarization radiated wave of two double excitation can be realized simultaneously.Encouraged by the single feed point of single polarization loop antenna and be evolved to four feedback points excitations, thus the loop antenna with dual polarised radiation characteristic can be realized, and the radiant body size of dual polarization loop antenna and single polarization loop antenna is basically identical.And circular rings antenna symmetry is better, and radiation characteristic is more excellent, and bandwidth is wider.
Fig. 2 A, Fig. 2 B are respectively structural representation and the vertical view of the utility model dual polarization loop antenna the first embodiment-narrow arm (or microbrachia) circular loop antenna.As shown in the figure, dual polarization loop antenna of the present utility model comprises ring radiant body 101, feeding network 105, Ba Lun group 110 and reflecting plate 116.Ring radiant body 101 has symmetrical structure, it will be apparent to those skilled in the art that symmetrical structure comprises Central Symmetry and axial symmetry, and symmetrical structure centered by showing in the utility model accompanying drawing.Ring radiant body 101 is annulus radiant body and is made up of four identical quadrant arc radiation arms 102, feeding network 105 is radio frequency cable type feeding network and is made up of two groups of identical branching networks 106, and Ba Lun group 110 is made up of four groups of Ba Lun i.e. eight Ba Lun arms 111.The corresponding cable of composition branching networks 106 is laid along the U-lag of respective Ba Lun arm 111 and is taken advantage of a situation to Ba Lun arm 111 or merge between two thus the input port of a formation polarized signal after being directed to reflecting plate 116 back side again.The upper port of branching networks 106 is feed port, and its cable outer conductor is welded in Ba Lun arm 111 nearby to form distributing point 107, and its cable core is then crossed over cable place Ba Lun arm 111 and welded with another Ba Lun arm 111 respective point.The Ba Lun arm 111 of Ba Lun group 110 is upwards open horn-like, the upper end of two Ba Lun arms 111 of each group Ba Lun is connected with the abutting end of corresponding radiation arm 102 respectively, and the bottom of every eight Ba Lun arms 111 is drawn in and linked together by metal fixed disk 112.Metal fixed disk 112 is fixed on conductive reflection plate 116, ring radiant body 101 to be placed in directly over reflecting plate 116 about quarter-wave strong point, and ring radiant body 101 place anchor ring is parallel to reflecting plate 116, reflecting plate 116 is for guaranteeing dual polarization loop antenna radiation directional beam.Ring radiant body 101, Ba Lun group 110 and metal fixed disk 112 can die casting one-shot formings, and especially, ring radiant body 101 realizes by PCB method.
Fig. 2 C is the utility model dual polarization loop antenna first embodiment-wide arm side loop antenna structural representation, and specific implementation method can with reference to figure 2A and 2B.Reflecting plate 116 and feeding network 105 is eliminated for the sake of simplicity in figure.Junction feed inside Ba Lun arm 111 top and radiation arm 102, wide arm side loop antenna significantly reduces the distance of ring radiant body to reflecting plate.This embodiment antenna is less than 1.4 at 698MHz-960MHz frequency band range standing internal wave ratio, and isolation is greater than 50dB, and radiation characteristic is good.
Fig. 2 D is the utility model dual polarization loop antenna first embodiment-wide arm circular loop antenna structural representation, and specific implementation method can with reference to figure 2A and 2B.Reflecting plate 116 and feeding network 105 is eliminated for the sake of simplicity in figure.Junction feed inside Ba Lun arm 111 top and radiation arm 102, the axial symmetry of wide arm circular loop antenna is broadening frequency bandwidth effectively.This embodiment antenna is less than 1.5 at 1600MHz-3000MHz frequency band range standing internal wave ratio, and isolation is greater than 45dB, and bandwidth reaches more than 60%, and radiation characteristic is good.
Fig. 2 E is the utility model dual polarization loop antenna first embodiment-wide arm octacyclic rings antenna structure view, and specific implementation method can with reference to figure 2A and 2B.Reflecting plate 116 and feeding network 105 is eliminated for the sake of simplicity in figure.Ring radiant body 101 is for waiting or the octagon such as not, and the gap 108 between radiation arm 102 is ladder gradual change shape.
Fig. 2 F is the utility model dual polarization loop antenna first embodiment-wide arm circumference mating type loop antenna structural representation, and specific implementation method can with reference to figure 2A and 2B.Reflecting plate 116 and feeding network 105 is eliminated for the sake of simplicity in figure.Ring radiant body 101 is circumference mating type, and the gap 108 between radiation arm 102 is rectigradation shape.
It should be noted that, above-mentioned narrow arm loop antenna is about quarter-wave apart from the height of reflecting plate, wide armlet antenna radiator not only can significantly reduce apart from the height of reflecting plate, and can effectively expand unit frequency bandwidth, and this height can be reduced to 1/10th wavelength in typical case.
In addition, also it should be noted that, in the dual polarization loop antenna shown in Fig. 2 A to Fig. 2 F, four coplanar settings of radiation arm 102, and four radiation arms 102 are 90 degree of Rotational Symmetry distributions about ring radiant body 101 center.Ring radiant body 101 is circular rings, Q-RING, can certainly be polygon ring or other symmetrical structure.Width and the Width of ring radiant body 101 or radiation arm 102 are unrestricted, and the shape of cross section of radiation arm 102 is also unrestricted.Especially, radiation arm 102 Width and ring radiant body 101 is coplanar and it points to ring center time be referred to as coplanar ring.The all-wave that the average perimeter of ring radiant body 101 is about corresponding to design frequency is long, and namely the average length of radiation arm 102 is about quarter-wave.And between adjacent radiation arm 102, leave gap 108, the shape of this gap 108 is unrestricted, especially, this gap 108 is long narrow square (Fig. 2 B) or ladder gradual change shape (Fig. 2 E) or rectigradation shape (Fig. 2 F) or curve gradual change shape.And ring radiant body 101 and the disposable die cast of Ba Lun group 110; Or the disposable die cast of Ba Lun group 110, ring radiant body 101 PCB method realize, then the two solder bond.And feeding network 105 can also be band line style or microstrip type or radio frequency cable type or theirs is combined, two group of branches networks 106 of feeding network 105 respectively correspondence provide the ± input and output of 45 ° of polarized signals, namely the common port of each branching networks 106 is signal input port, and free end is signal output port.In addition, two Ba Lun arms 111 of each Ba Lun group are parallel to each other or non-parallel.
Please refer to Fig. 3 A, 3B again, be respectively the utility model dual polarization loop antenna second embodiment--Shared aperture Double-frequency antenna structure schematic diagram and vertical view, eliminate reflecting plate and feeding network for the sake of simplicity in figure.Be wherein the utility model dual polarization loop antenna compared with the antenna 201 of low-frequency range--square wide armlet antenna, the antenna 203 of higher frequency band is existing all channel antenna, rational design can make the ring radiant body 202 of low frequency range arm side loop antenna be down to about 1/10th wavelength apart from the height of reflecting plate, so, the ring radiant body 202 of low frequency range arm side loop antenna can coplanarly be arranged with the radiant body 204 of the antenna of higher frequency band, thus double frequency Shared aperture radiating antenna can be realized, wherein 205, the 206 feed Ba Lun being respectively low frequency cell and high frequency unit.It should be noted that the feed method of double frequency common reflector is most important, can with reference to aforementioned first embodiment, coplanar high frequency radiation body and low frequency ring radiant body can realize by PCB method.
Especially, the dual polarization loop antenna that the utility model proposes can be all compared with low-frequency range antenna 201 and higher frequency band antenna 203.
As can be seen from the above description, ring radiant body due to the utility model dual polarization loop antenna comprises four symmetrically arranged radiation arms, the symmetry utilizing loop antenna radiation arm current/voltage to distribute and orthogonality principle, excitation is implemented to single polarization loop antenna and just can realize dual polarization loop antenna, and the radiant body size of this dual polarization loop antenna and single polarization loop antenna is basically identical.In addition, dual polarization loop antenna of the present utility model is compared with the known base station antenna unit be made up of four half-wave doublets, its alternative traditional antenna, and the radiant body size of the utility model dual polarization loop antenna is less, lateral dimension is only 50% of traditional antenna, meanwhile, dual-polarized antenna structure of the present utility model is simple, be easy to manufacture and shaping, also has the features such as section is low, radiation characteristic is excellent.
More than in conjunction with most preferred embodiment, the utility model is described, but the utility model is not limited to the embodiment of above announcement, and should contain various carry out according to essence of the present utility model amendment, equivalent combinations.
Claims (10)
1. a dual polarization loop antenna, it is characterized in that: comprise ring radiant body, feeding network, Ba Lun group and reflecting plate, described ring radiant body comprises four radiation arms and is placed in directly over described reflecting plate, four described radiation arms are symmetrical arranged, described Ba Lun group comprises four groups of Ba Lun, and each group Ba Lun comprises a pair Ba Lun arm, described in each, the upper end of Ba Lun arm is connected with described radiation arm, be fixed on described reflecting plate after the lower end gathering of eight described Ba Lun arms and ensure that the plane parallel of described ring radiant body is in described reflecting plate, described feeding network is connected respectively with described radiation arm and described Ba Lun arm.
2. dual polarization loop antenna as claimed in claim 1, is characterized in that: be provided with gap between adjacent described radiation arm.
3. dual polarization loop antenna as claimed in claim 2, is characterized in that: described gap or for long narrow square or for ladder gradual change shape or for rectigradation shape or be curve gradual change shape.
4. dual polarization loop antenna as claimed in claim 1, it is characterized in that: described ring radiant body has symmetrical structure, and described ring radiant body is Q-RING, circular rings or polygon ring.
5. dual polarization loop antenna as claimed in claim 1, is characterized in that: four coplanar settings of described radiation arm or antarafacial are arranged, and four described radiation arms are symmetrical in 90 ° successively in described ring radiant body place plane.
6. dual polarization loop antenna as claimed in claim 1, is characterized in that: the wavelength of average length corresponding to 1/4th design frequencies of described radiation arm.
7. dual polarization loop antenna as claimed in claim 1, is characterized in that: described ring radiant body and the disposable die cast of described Ba Lun group; Or the disposable die cast of described Ba Lun group, described ring radiant body PCB method the two solder bond again after realizing.
8. dual polarization loop antenna as described in any one of claim 1-7, it is characterized in that: described Ba Lun arm is electric conductor, each upper end organizing two described Ba Lun arms of described Ba Lun connects with the abutting end of corresponding described radiation arm respectively, is fixed on described reflecting plate after the lower end gathering of eight described Ba Lun arms by conduction fixed disk.
9. dual polarization loop antenna as claimed in claim 8, it is characterized in that: described feeding network is radio frequency cable type or micro strip line type or band line style or theirs is combined, described feeding network comprises two group of branches networks, and branching networks described in two groups respectively correspondence provide the ± input and output of 45 ° of polarized signals.
10. dual polarization loop antenna as claimed in claim 9, it is characterized in that: the cable outer conductor of radio frequency cable type feeding network is layed in the U-type groove of arbitrary described Ba Lun arm, and the end of described cable outer conductor is welded in arbitrary described Ba Lun arm or radiation arm to form distributing point, the cable core of described radio frequency cable type feeding network crosses over the described Ba Lun arm at described cable outer conductor place or radiation arm is connected with Ba Lun arm or radiation arm described in another.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520484383.4U CN204793177U (en) | 2015-07-07 | 2015-07-07 | Double polarization loop antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520484383.4U CN204793177U (en) | 2015-07-07 | 2015-07-07 | Double polarization loop antenna |
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|---|---|
| CN204793177U true CN204793177U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520484383.4U Expired - Fee Related CN204793177U (en) | 2015-07-07 | 2015-07-07 | Double polarization loop antenna |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953253A (en) * | 2015-07-07 | 2015-09-30 | 董玉良 | Dual-polarized loop antenna |
| WO2018218603A1 (en) * | 2017-06-01 | 2018-12-06 | 华为技术有限公司 | Dual-polarized radiation unit, antenna, base station and communication system |
| CN109066099A (en) * | 2018-08-16 | 2018-12-21 | 南京澳博阳射频技术有限公司 | Ultra wideband dual polarization radiating element and antenna for base station |
| CN115411495A (en) * | 2022-09-26 | 2022-11-29 | 南通大学 | Miniaturized bowl-shaped base station antenna unit based on shared dipole arm |
-
2015
- 2015-07-07 CN CN201520484383.4U patent/CN204793177U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953253A (en) * | 2015-07-07 | 2015-09-30 | 董玉良 | Dual-polarized loop antenna |
| WO2018218603A1 (en) * | 2017-06-01 | 2018-12-06 | 华为技术有限公司 | Dual-polarized radiation unit, antenna, base station and communication system |
| US11043738B2 (en) | 2017-06-01 | 2021-06-22 | Huawei Technologies Co., Ltd. | Dual-polarized radiating element, antenna, base station, and communications system |
| CN109066099A (en) * | 2018-08-16 | 2018-12-21 | 南京澳博阳射频技术有限公司 | Ultra wideband dual polarization radiating element and antenna for base station |
| CN115411495A (en) * | 2022-09-26 | 2022-11-29 | 南通大学 | Miniaturized bowl-shaped base station antenna unit based on shared dipole arm |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20180707 |
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| CF01 | Termination of patent right due to non-payment of annual fee |