CN102544728B - Array antenna - Google Patents
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- CN102544728B CN102544728B CN201210005890.6A CN201210005890A CN102544728B CN 102544728 B CN102544728 B CN 102544728B CN 201210005890 A CN201210005890 A CN 201210005890A CN 102544728 B CN102544728 B CN 102544728B
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Abstract
The invention discloses a kind of array antenna, comprise the micro-strip antenna array, reflecting plate and the phase shift feeding network that are made up of microband antenna unit, above-mentioned micro-strip antenna array is arranged on the front of said reflection plate, above-mentioned phase shift feeding network is arranged on the back side of said reflection plate, is provided with isolation strip between the microband antenna unit that above-mentioned array antenna is adjacent.Invention increases the isolation of array antenna.
Description
Technical field
The present invention relates to field of antenna, particularly relate to a kind of array antenna.
Background technology
Along with the development of satellite navigation and measuring technique, global position system have also been obtained increasingly extensive application.At present, the whole world has the global position system that multiple country establishes oneself, as the Beidou satellite navigation system of China, the global positioning system (GlobalPositioningSystem of the U.S., GPS), the Galileo NAVSTAR in Muscovite GPS (Global Position System) (GlobalNavigationSatelliteSystem, GLONASS) and Europe.The satellite-signal taking GPS as the satellite navigation system of representative is very faint, be easy to be subject to extraneous radio frequency interference, therefore the interference free performance of the antenna of the receiving equipment of satellite-signal requires just higher, if the antijamming capability of the antenna of receiving equipment is inadequate, when serious, receiving equipment cisco unity malfunction may be caused.Substantially adopt array adaptive antenna technology to realize the antijamming capability of antenna at present, the conventional array antenna that uses adopts single feed point feed, the problems such as it exists narrow bandwidth, low elevation axis ratio, and scheduling and planning is complicated.Usual array antenna, can by array element relatively away from putting in order to reduce the mutual coupling between array element, and such array antenna size can be larger.
Summary of the invention
The object of the invention is, a kind of array antenna is provided, large to optimize existing array antenna volume, the problem that isolation is not high.
The invention provides a kind of array antenna, comprise the micro-strip antenna array, reflecting plate and the phase shift feeding network that are made up of microband antenna unit, above-mentioned micro-strip antenna array is arranged on the front of said reflection plate, above-mentioned phase shift feeding network is arranged on the back side of said reflection plate, is provided with isolation strip between the microband antenna unit that above-mentioned array antenna is adjacent.
The present invention, by arranging isolation strip around the limit that microband antenna unit is adjacent with other microband antenna units, changes the flow direction of microband antenna unit surface current, thus adds the isolation between microband antenna unit; The present invention can be applicable to the front end of the anti-interference adaptive antenna system in satellite navigation and location system field.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a part of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the front schematic view of array antenna of the present invention when having 4 microband antenna units;
Fig. 2 is the schematic rear view of the above-mentioned array antenna of Fig. 1;
Fig. 3 is the front schematic view of array antenna of the present invention when having 8 microband antenna units;
Fig. 4 is the schematic rear view of the above-mentioned array antenna of Fig. 3;
Fig. 5 is the gain analogous diagram of the microband antenna unit of array antenna described in Fig. 1;
Fig. 6 is the axial ratio analogous diagram of the microband antenna unit of array antenna described in Fig. 1;
Fig. 7 is the isolation analogous diagram of the microband antenna unit of array antenna described in Fig. 1;
Fig. 8 is the gain analogous diagram of the microband antenna unit of the surrounding of array antenna described in Fig. 3;
Fig. 9 is the axial ratio analogous diagram of the microband antenna unit of the surrounding of array antenna described in Fig. 3;
Figure 10 is the gain analogous diagram of the center microstrip antenna of array antenna described in Fig. 3;
Figure 11 is the axial ratio analogous diagram of the center microstrip antenna of array antenna described in Fig. 3;
Figure 12 is the isolation analogous diagram of the microband antenna unit of array antenna described in Fig. 3.
In figure, 1 is microband antenna unit, and 2 is reflecting plate, and 3 is phase shift feeding network, and 4 is isolation strip, and 5 is metallization via hole, and 6 is feedback signal hole, pin position.
Embodiment
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearly, understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
In the present invention, the isolation of adjacent microband antenna unit 1 is all greater than 15dB; Each microband antenna unit 1 all has an independently phase shift feeding network 3, and as shown in Fig. 2 and Fig. 4, namely the number at phase shift feed networking 3 is identical with the number of microband antenna unit 1; Phase shift feeding network 3 is positioned at the back side of reflecting plate 2, microband antenna unit 1 and phase shift feeding network 3 with reflecting plate 2 for the plane of symmetry is symmetrically distributed in the front and back of reflecting plate 2, that is, if microband antenna unit 1 relative to rotate with reference to microband antenna unit 45 ° arrange time, then the phase shift feeding network 3 of its correspondence also rotates same angle and arranges; Microband antenna unit 1 is by the direct feed of double-fed pin, and metallization via hole 5 is in order to ensure that microband antenna unit 1 can good earth.
As shown in Figure 1, be the front schematic view of array antenna of the present invention when there is 4 microband antenna units, composition graphs 2, the i.e. schematic rear view of the above-mentioned array antenna of Fig. 1, in the present embodiment, array antenna comprises the micro-strip antenna array, reflecting plate 2 and the phase shift feeding network 3 that are made up of 4 microband antenna units 1A, 1B, 1C, 1D, microband antenna unit 1A, 1B, 1C, 1D are arranged on the front of reflecting plate 2, wherein, microband antenna unit 1D is positioned at reflecting plate 2 center, microband antenna unit 1A, 1B, 1C be evenly distributed on the center of reflecting plate 2 for the center of circle circumferentially, the b of microband antenna unit 1A, the d limit of c limit and microband antenna unit 1D is adjacent, therefore the b of microband antenna unit 1A, the surrounding on c limit is provided with isolation strip 4, the b of microband antenna unit 1B, the a limit of c limit and microband antenna unit 1D is adjacent, therefore the b of microband antenna unit 1B, the surrounding on c limit is provided with isolation strip 4, the b of microband antenna unit 1C, the c limit of c limit and microband antenna unit 1D is adjacent, therefore the b of microband antenna unit 1C, the surrounding on c limit is provided with isolation strip 4, due to a of microband antenna unit 1C, b, d limit does not have adjacent microband antenna unit 1, therefore do not need to arrange isolation strip 4 more in addition, isolation strip 4 is for being opened in the banded hollow out gap on reflecting plate 2.
In the present invention, during distant between adjacent two microband antenna units 1, distance between two such as adjacent microband antenna units 1 is more than or equal to a half of the operating frequency of microband antenna unit 1, the interference of polarization in the same way between the feedback pin of microband antenna unit 1 is smaller, negligible, therefore in this case, in any case the polarised direction of the feedback pin of each microband antenna unit 1 is arranged, the polarization interference problem of generation can not affect Antenna Operation, but, during close together between adjacent two microband antenna units 1, distance between two such as adjacent microband antenna units 1 be less than the half of the operating frequency of microband antenna unit 1 and the polarised direction of the feedback pin of each microstrip antenna 1 is identical time, the interference that polarizes in the same way produced between microband antenna unit 1 can affect the working sensitivity of array antenna, for eliminating the polarization interference problem that microband antenna unit 1 exists when presenting pin polarised direction and being identical, the present invention is when arranging microband antenna unit 1, by rotating the mode of microband antenna unit 1, distance is made to be less than the polarised direction of the feedback pin of each microband antenna unit 1 of operating frequency half not identical, in the present embodiment, with microband antenna unit 1A for reference microband antenna unit, the relative microband antenna unit 1A of microband antenna unit 1D turns clockwise 45 ° and arranges, the relative microband antenna unit 1A of microband antenna unit 1B turns clockwise 90 ° and arranges, the relative microband antenna unit 1A of microband antenna unit 1C turns clockwise 180 ° and arranges, namely each microband antenna unit relative reference microband antenna unit turn clockwise 45 ° integral multiple arrange, so, namely distance is made to be less than the polarised direction of the feedback pin of the microband antenna unit 1 of operating frequency half all not identical, reach the object eliminating polarization interference.
As shown in Figure 3, be the front schematic view of array antenna of the present invention when there is 8 microband antenna units, composition graphs 4, the i.e. schematic rear view of the above-mentioned array antenna of Fig. 3, in the present embodiment, array antenna comprises by 8 microband antenna unit 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H forms micro-strip antenna array, reflecting plate 2 and phase shift feeding network 3, microband antenna unit 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H is distributed in the annulus that formed for the center of circle with reflecting plate 2 center circumferentially, wherein, microband antenna unit 1A, 1B, 1C, 1D is arranged on the position of intersecting point of the larger circumference of the radius of the diagonal of reflecting plate 2 and annulus, with microband antenna unit 1A for reference microband antenna unit, 1B turns clockwise 90 ° relative to 1A and arranges, namely 1A and 1B is symmetrical, 1C turns clockwise 180 ° relative to 1A and arranges, namely 1B and 1C is symmetrical, 1D turns clockwise 270 ° relative to 1A and arranges, namely 1C and 1D is symmetrical, 1A and 1D is symmetrical, microband antenna unit 1E, 1F, 1G, 1H are arranged on the position of intersecting point of the less circumference of the radius of the longitudinal and transverse center line of reflecting plate 2 and annulus, 1E is rotated counterclockwise 135 ° of settings relative to 1A, 1G and 1E is symmetrical arranged, and 1H is rotated counterclockwise 45 ° of settings relative to 1A, and 1F and 1H is symmetrical arranged, in the present embodiment, the surrounding on the limit adjacent with adjacent microband antenna unit 1 of each microband antenna unit 1 is provided with isolation strip 4, isolation strip 4 is for being opened in the banded hollow out gap on reflecting plate 2, as shown in the figure, b, c limit of microband antenna unit 1A is adjacent with a limit of microband antenna unit 1H, therefore is provided with isolation strip 4 around b, c limit of microband antenna unit 1A, b, c limit of microband antenna unit 1B is adjacent with a limit of microband antenna unit 1F, therefore is provided with isolation strip 4 around b, c limit of microband antenna unit 1B, b, c limit of microband antenna unit 1C is adjacent with the d limit of microband antenna unit 1F, therefore is provided with isolation strip 4 around b, c limit of microband antenna unit 1C, b, c limit of microband antenna unit 1D is adjacent with the d limit of microband antenna unit 1H, therefore is provided with isolation strip 4 around b, c limit of microband antenna unit 1D, a, d limit of microband antenna unit 1E respectively with the b limit of microband antenna unit 1H, the b limit of 1F, and a, d limit of 1G is adjacent, therefore is provided with isolation strip 4 around a, d limit of microband antenna unit 1E, in like manner, b, c limit of microband antenna unit 1F, a, d limit of microband antenna unit 1G, b, c limit of microband antenna unit 1H are also all provided with isolation strip 4.
In other embodiments, as long as it is not identical to ensure that distance is less than the polarised direction of the feedback pin of the microband antenna unit 1 of operating frequency half, how which microband antenna unit is specifically arranged, then determine according to concrete condition.
As shown in Figure 5, be the gain analogous diagram of array antenna microband antenna unit described in Fig. 1, wherein transverse axis (X-axis) represents elevation angles, and the longitudinal axis (Y-axis) represents antenna gain.
As shown in Figure 6, be the axial ratio analogous diagram of the microband antenna unit of array antenna described in Fig. 1, wherein transverse axis (X-axis) represents elevation angles, and the longitudinal axis (Y-axis) represents axial ratio.
As shown in Figure 7, be the isolation analogous diagram of the microband antenna unit of array antenna described in Fig. 1, wherein transverse axis (X-axis) represents frequency, and the longitudinal axis (Y-axis) represents isolation.
As shown in Figure 8, be the gain analogous diagram of the microband antenna unit of the surrounding of array antenna described in Fig. 3, wherein transverse axis (X-axis) represents elevation angles, and the longitudinal axis (Y-axis) represents antenna gain.
As shown in Figure 9, be the axial ratio analogous diagram of the microband antenna unit of the surrounding of array antenna described in Fig. 3, wherein transverse axis (X-axis) represents elevation angles, and the longitudinal axis (Y-axis) represents axial ratio.
As shown in Figure 10, be the gain analogous diagram of the center microstrip antenna of array antenna described in Fig. 3, wherein transverse axis (X-axis) represents elevation angles, and the longitudinal axis (Y-axis) represents antenna gain.
As shown in figure 11, be the axial ratio analogous diagram of the center microstrip antenna of array antenna described in Fig. 3, wherein transverse axis (X-axis) represents elevation angles, and the longitudinal axis (Y-axis) represents axial ratio.
As shown in figure 12, be the isolation analogous diagram of the microband antenna unit of array antenna described in Fig. 3, wherein transverse axis (X-axis) represents frequency, and the longitudinal axis (Y-axis) represents isolation.The center microstrip antenna of what dotted line represented is antenna and and isolation around between any one microband antenna unit, the isolation that what solid line represented is around between adjacent two microband antenna units.
Above-mentioned explanation illustrate and describes the preferred embodiments of the present invention, but as previously mentioned, be to be understood that the present invention is not limited to the form disclosed by this paper, should not regard the eliminating to other embodiments as, and can be used for other combinations various, amendment and environment, and can in invention contemplated scope described herein, changed by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change do not depart from the spirit and scope of the present invention, then all should in the protection range of claims of the present invention.
Claims (6)
1. an array antenna, comprise the micro-strip antenna array, reflecting plate and the phase shift feeding network that are made up of microband antenna unit, described micro-strip antenna array is arranged on the front of described reflecting plate, described phase shift feeding network is arranged on the back side of described reflecting plate, it is characterized in that, be provided with isolation strip between the microband antenna unit that described array antenna is adjacent, described isolation strip is arranged on around the adjacent limit of described adjacent microband antenna unit; Described isolation strip is the banded hollow out gap be opened on described reflecting plate.
2. array antenna according to claim 1, is characterized in that, described microband antenna unit center is provided with metallization via hole, and by double-fed pin feed.
3. array antenna according to claim 2, is characterized in that, each microband antenna unit in described micro-strip antenna array all has an independently phase shift feeding network.
4. array antenna according to claim 3, is characterized in that, described phase shift feeding network and described microband antenna unit are symmetricly set on two faces of described reflecting plate.
5. array antenna according to claim 1, it is characterized in that, in described micro-strip antenna array, each microband antenna unit relative to reference to microband antenna unit clockwise or the integral multiple being rotated counterclockwise 45 ° be arranged on described reflecting plate, wherein, described reference microband antenna unit is a microband antenna unit in described micro-strip antenna array.
6. array antenna according to claim 1, is characterized in that, the isolation between the adjacent microband antenna unit in described micro-strip antenna array is all greater than 15dB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210005890.6A CN102544728B (en) | 2012-01-10 | 2012-01-10 | Array antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210005890.6A CN102544728B (en) | 2012-01-10 | 2012-01-10 | Array antenna |
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| CN102544728A CN102544728A (en) | 2012-07-04 |
| CN102544728B true CN102544728B (en) | 2015-11-25 |
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| CN201210005890.6A Active CN102544728B (en) | 2012-01-10 | 2012-01-10 | Array antenna |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3043420B1 (en) | 2013-09-30 | 2018-05-30 | Huawei Technologies Co., Ltd. | Antenna array and phase control system |
| CN103928762B (en) * | 2014-04-15 | 2016-01-27 | 华为技术有限公司 | Antenna equipment |
| CN106532262A (en) * | 2016-11-08 | 2017-03-22 | 中国电子科技集团公司第二十研究所 | Multi-system antenna nested ring array |
| CN107809000B (en) * | 2017-10-10 | 2020-03-31 | 中国人民解放军63653部队 | Microstrip low axial ratio circularly polarized antenna for aerial radiation field measurement |
| CN109888489A (en) * | 2019-04-16 | 2019-06-14 | 深圳市朗赛微波通信有限公司 | A kind of raising amplitude-phase consistency anti-interference antenna unit and anti-jamming array array antenna |
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| CN2492989Y (en) * | 2001-07-27 | 2002-05-22 | 台湾骏炎科技股份有限公司 | Double-polarization array antenna |
| CN101316008A (en) * | 2008-06-13 | 2008-12-03 | 哈尔滨工业大学 | MIMO mobile terminal multi-antenna with high isolation and low correlated characteristic |
| CN101662068A (en) * | 2008-08-29 | 2010-03-03 | 华为技术有限公司 | Decoupling assembly, antenna module and antenna array |
| CN102117969A (en) * | 2011-03-11 | 2011-07-06 | 深圳市华信天线技术有限公司 | Array antenna |
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2012
- 2012-01-10 CN CN201210005890.6A patent/CN102544728B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2492989Y (en) * | 2001-07-27 | 2002-05-22 | 台湾骏炎科技股份有限公司 | Double-polarization array antenna |
| CN101316008A (en) * | 2008-06-13 | 2008-12-03 | 哈尔滨工业大学 | MIMO mobile terminal multi-antenna with high isolation and low correlated characteristic |
| CN101662068A (en) * | 2008-08-29 | 2010-03-03 | 华为技术有限公司 | Decoupling assembly, antenna module and antenna array |
| CN102117969A (en) * | 2011-03-11 | 2011-07-06 | 深圳市华信天线技术有限公司 | Array antenna |
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Effective date of registration: 20170925 Address after: 518000, Shenzhen, Guangdong, Nanshan District Zhongshan road 1001, TCL international E City, E1 building, 12 floor Patentee after: Harxon Corporation Address before: 518057, Guangdong, Nanshan District province science and technology, South twelve road hi tech Industrial Park, South District, Shenzhen electric lighting R & D center on the third floor, A1 Patentee before: Shenzhen Huaxin Antenna Technology Co., Ltd. |