CN101047282B - Compact TD-SCDMA linear array fan section intelligent antenna - Google Patents
Compact TD-SCDMA linear array fan section intelligent antenna Download PDFInfo
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- CN101047282B CN101047282B CN2007100617340A CN200710061734A CN101047282B CN 101047282 B CN101047282 B CN 101047282B CN 2007100617340 A CN2007100617340 A CN 2007100617340A CN 200710061734 A CN200710061734 A CN 200710061734A CN 101047282 B CN101047282 B CN 101047282B
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Abstract
An intelligent antenna of compact TD-SCDMA linear array sector type is prepared as forming said antenna by two columns of antenna array elements as front column being formed by N numbers of antenna array elements and back column being formed by n-1 numbers of antenna array elements, setting space between two antenna array elements in the same column to be 1/2 operation wavelength, laying each back column antenna array element between two front column antenna array elements and setting distance between each said back column element to two said front column elements to be 1/2 operation wavelength.
Description
Technical field
The present invention relates to a kind of mobile communication transmit antenna, belong to antenna technical field.
Background technology
Adopting intelligent antenna technology is one of several big key technologies in 3G (Third Generation) Moblie technology (3G) the TD-SCDMA system.The characteristics of smart antenna are: it forms antenna array by a plurality of antenna elements, in communication process, dynamically adjust the phase place and the amplitude of each antenna element pumping signal, be formed on the wave beam of space at the user, this wave beam can move and moves with the user, follows the user all the time.Because this antenna array can form required wave beam according to the communication needs, and wave beam can be strong and weak from motion tracking user and adjusting, so be referred to as smart antenna.The linear array smart antenna can be made up of 4-16 array-element antenna forming array antenna and control corresponding algorithm software two parts.Array-element antenna quantity is many, and the wave beam intelligence effect of dynamically adjusting is just strong, but corresponding system complexity is just high.Each array-element antenna is made up of unit a period of time again.Because the gain of antenna is obtained by single a period of time gain vector stack.Unit a period of time of antenna is many, and the gain of antenna is just high, but antenna length is just long; Unit a period of time is few, and length is reduced, but corresponding antenna gain just reduces.
The advantage of smart antenna is: the relevant principle of wave beam of utilizing a plurality of array-element antenna realizes space division multiple access (SDMA) to different user difference wave beam forming; Wave beam forming effectively reduces the interference in minizone and the sub-district; By wave beam forming, concentrate energy, effectively improve signal strength signal intensity 6～8dB, thereby reduce base station and mobile phone transmitting power, improve power system capacity and quality, expand the coverage area; According to user's arrival bearing, the user location that can provide convenience economic.
Existing TD-SCDMA linear array fan section intelligent antenna all is the linear array working method that proposes in theory, and promptly each bay all is a directional antenna, and the distance between each adjacent array element is 1/2 wavelength, form a line, form by 4-16 array element, be typically 8 array element linear array antennas, shell seal is arranged.
At present, 8 array-element antenna are that industry generally believes the good comprehensive properties smart antenna, but find that 8 array-element antenna sizes have been drawn more problem more greatly in nearly 2 years TD-SCDMA try net practice, and mainly be: 1. antenna size is big, and windage is big; Weight is big, and difficulty is installed; 2. the terrace that website is installed is required height, the engineering construction difficulty is wasted man-hour; 3. can not make full use of 2G system site resource; 4. thereby the site difficult coordination influences project progress.
Based on above reason, many equipment vendors and antenna manufacturer begin to release the solution of 6 array elements or 4 array-element antenna, or propose to reduce antenna height.But, reduce bay, be cost with minimizing smart antenna effect, reduction figuration gain; And reduce antenna length is to be cost to reduce antenna gain, reduce coverage, and these measures all can not be satisfactory.
Summary of the invention
Technical problem to be solved by this invention is not lose antenna gain, guaranteeing under the prerequisite of intelligent antenna performance and effect, by fan section intelligent antenna structurally is optimized distortion, thereby reach the purpose of dwindling the antenna width dimensions, reducing windage and difficulty of construction.
The technical scheme that addresses the above problem is:
A kind of compact TD-SCDMA linear array fan section intelligent antenna, it is made up of a plurality of bays, each bay is lined up two row, the prostatitis is a N bay, rank rear is a N-1 bay, spacing between each adjacent antenna array element of same column is 1/2nd operation wavelengths, and each rank rear bay is all on the position between adjacent two bays in prostatitis, and the distance between described two bays in prostatitis is 1/2nd operation wavelengths.
Above-mentioned compact TD-SCDMA linear array fan section intelligent antenna, described N are 4, and the bay number is 7, and the prostatitis array number is 4, and the rank rear array number is 3.
Above-mentioned compact TD-SCDMA linear array fan section intelligent antenna, the rear of described rank rear bay is provided with the metallic reflection plate, the metallic reflection plate is 1/4th operation wavelengths apart from the distance of rank rear bay, and at horizontal two end faces of antenna 60 ° of angular bend (with respect to the baseplane) is arranged.
Above-mentioned compact TD-SCDMA linear array fan section intelligent antenna, the outside of described front and back array antenna array element is provided with glass fibre reinforced plastics casing, and they and metallic reflection plate constitute the housing of sealing, in front and back array antenna array element is enclosed in.
The utility model has the advantages that:
1. can reduce the lateral dimension of antenna, make the horizontal area of antenna reduce half, thereby reduce windage greatly;
2. reduce the aerial array number, thereby reduce weight;
3. the terrace that website is installed is required to reduce, thereby reduce the engineering construction difficulty, save man-hour;
4. reduce the terrace requirement is installed, reduce simultaneously the requirement of reinforcing is installed, save material;
5. do not lose the effect of antenna gain and intelligence.Relevant principle according to ripple, utilize that the waveform of two array antenna array elements is relevant to make the electric field area coverage of entire antenna and figuration effect still be equivalent to 8 array-element antenna effects, be far superior to 6 array-element antenna, more be better than 4 array-element antenna, be far superior to antenna length on the area coverage and reduce the scheme of half.
6. help accelerating the construction of 3G (Third Generation) Moblie technology (3G) TD-SCDMA grid, to realizing that commercialization plays a role in promoting.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is a compact TD-SCDMA linear array fan section intelligent antenna operation principle schematic diagram.
Mark is as follows among the figure: 0～6 bay Position Number; Bay 11; Metallic reflection plate 12; Glass fibre reinforced plastics casing 13.
Embodiment
The present invention adopts two array antenna array element structures on layout structure, do not reduce bay quantity (each array element still is made up of 8 unit a period of time) as much as possible, reduces the horizontal area of antenna as far as possible simultaneously, thereby reaches the purpose that reduces windage.Aspect electric field intensity map, utilize the relevant principle of ripple, make the electric field area coverage of entire antenna and wave beam forming effect still be equivalent to 8 array-element antenna effects.Its layout structure is as shown in Figure 1, 2: have 7 bays 11, four bays in prostatitis, each bay spacing 1/2nd operation wavelength; Three bays of rank rear, each bay spacing 1/2nd operation wavelength; Each rank rear bay all on the position between two bays in prostatitis, with the spacing of these two bays of prostatitis be 1/2nd operation wavelengths, form a plurality of equilateral triangles between the array antenna array element of front and back.The outer cover of array-element antenna is that metallic reflection plate 12 and glass fibre reinforced plastics casing 13 are made, and metallic reflection plate 12 is positioned at the back of rank rear bay, and metallic reflection plate 12 is 1/4th operation wavelengths apart from the spacing of rank rear bay; The front is a glass fibre reinforced plastics casing 13, plays effect dustproof and protection.In the above-described embodiments, metallic reflection plate 12 is the thick aluminium sheet of 4mm, and glass fibre reinforced plastics casing 13 is the thick fiberglass of 4mm.
In the present invention, two array antenna array elements can have multiple mode, and in general, the prostatitis bay is N, and the rank rear bay is N-1, and N=4 is typical suggested design, and the area that can cover as required selects N to equal 3,5 or other value.Its
In, 5 are adapted to the littler occasion of front face area requirement; 9 are adapted to the bigger occasion of area coverage.
Operation principle of the present invention is derived as follows:
As Fig. 3, be numbered 0 with first first array element of the leftmost side of arranging, serial number is numbered 6 up to the array element in the second row rightmost side and finishes.As can be seen from the figure, the electromagnetic wave that a distant place is transmitted (can be considered plane wave), the distance of being walked when arriving each array element on the spatial domain is different, with the plane incident direction perpendicular to the aerial array composition is 0 ° of direction, calculate angle clockwise, each range difference of numbering relative No. 0 array element of array element incident wave is respectively Δ d
mM=0,1,2,3 ... .6,
Δd
m0，1，2，3＝m·λ/2·sinθ，Δd
m4，5，6＝λ/2·((m-4)·sinθ+sin(60°+θ))
Concrete numerical computations is as follows:
No. 1 array element: λ/2sin θ (θ is the incident wave angle)
No. 2 array element: 2 λ/2sin θ
No. 3 array element: 3 λ/2sin θ
No. 4 array element: λ/2sin (60 °+θ)
No. 5 array elements: λ/2sin θ+λ/2sin (60 °+θ)=λ/2 (sin θ+sin (60 °+θ))
No. 6 array element: 2 λ/2sin θ+λ/2sin (60 °+θ)=λ/2 (2sin θ+sin (60 °+θ))
The phase difference of incident wave is on the time domain: (the Δ dm of 2 π/λ).As seen, the difference of distance has caused the difference of the phase of received signal on each array element on the space.The signal of the output of entire antenna is after the process weighting:
Wherein, A is a gain constant, and s (t) is the complex envelope signal, W
M, be the weight factor of array.According to the Overlay of sine wave, suppose that the weighted factor of each array element is:
W
M0，1，2，3＝e
jMπsinφ，W
M4，5，6＝e
jπ((M-4)sinφ+sin(60°+θ))
Then
Conclusion: select different φ, will change the pairing angle of wave beam, so can select suitable direction by changing weights.Promptly give different weights, at last the signal of all array elements is carried out, reach main lobe directed towards user arrival bearing's the purpose adaptively that makes radiation pattern with merging at different array element.
Claims (4)
1. compact TD-SCDMA linear array fan section intelligent antenna, it is characterized in that: it is made up of a plurality of bays (11), described a plurality of bay is lined up two row, the prostatitis is a N bay, rank rear is a N-1 bay, spacing between each adjacent antenna array element of same column is 1/2nd operation wavelengths, and each rank rear bay is all on the position between adjacent two bays in prostatitis, and the distance between described two bays in prostatitis is 1/2nd operation wavelengths.
2. compact TD-SCDMA linear array fan section intelligent antenna according to claim 1 is characterized in that: the N of described bay number is 3,4 or 5.
3. compact TD-SCDMA linear array fan section intelligent antenna according to claim 2, it is characterized in that: the rear of described rank rear bay is provided with metallic reflection plate (12), and metallic reflection plate (12) is 1/4th operation wavelengths apart from the distance of rank rear bay.
4. compact TD-SCDMA linear array fan section intelligent antenna according to claim 3 is characterized in that: be provided with glass fibre reinforced plastics casing (13) in the outside of front and back array antenna array element, described glass fibre reinforced plastics casing and metallic reflection plate constitute closure casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100617340A CN101047282B (en) | 2007-04-24 | 2007-04-24 | Compact TD-SCDMA linear array fan section intelligent antenna |
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| CN2007100617340A CN101047282B (en) | 2007-04-24 | 2007-04-24 | Compact TD-SCDMA linear array fan section intelligent antenna |
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| CN101047282A CN101047282A (en) | 2007-10-03 |
| CN101047282B true CN101047282B (en) | 2011-11-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI502813B (en) * | 2012-07-13 | 2015-10-01 | Wistron Corp | Phased array smart antennas and operating methods thereof |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101783694B (en) * | 2009-01-21 | 2013-01-23 | 鼎桥通信技术有限公司 | Method for optimizing broadcasting beam |
| CN103052084B (en) * | 2011-10-13 | 2015-05-20 | 中国移动通信集团设计院有限公司 | Intelligent antenna and wave beam adjustment method thereof |
| CN104469799B (en) * | 2013-09-25 | 2018-03-06 | 中国科学院上海高等研究院 | The network seamless covering method and system quickly accessed based on 802.11 wireless terminal |
| CN106654595B (en) * | 2017-02-08 | 2022-09-27 | 华南理工大学 | A high-gain low-profile vehicle-mounted antenna |
Citations (6)
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|---|---|---|---|---|
| CN2293901Y (en) * | 1997-03-13 | 1998-10-07 | 北京信威通信技术有限公司 | Ring shape intelligent antenna array for radio communication system |
| CN1373918A (en) * | 1999-09-10 | 2002-10-09 | 艾利森电话股份有限公司 | Sparse array antenna |
| CN1507673A (en) * | 2001-04-16 | 2004-06-23 | �����ɷ� | Dual-band dual-polarized antenna array |
| CN1681160A (en) * | 2004-04-09 | 2005-10-12 | 大唐移动通信设备有限公司 | Curve intelligent antenna array and method for optimizing its structural parameter |
| CN1755986A (en) * | 2004-09-30 | 2006-04-05 | 北京信威通信技术股份有限公司 | Dual-polarization panel-shaped antenna used in TD-SCDMA system |
| CN1878023A (en) * | 2005-06-09 | 2006-12-13 | 大唐移动通信设备有限公司 | Method for forming MIMO array by using intelligent antenna array |
-
2007
- 2007-04-24 CN CN2007100617340A patent/CN101047282B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2293901Y (en) * | 1997-03-13 | 1998-10-07 | 北京信威通信技术有限公司 | Ring shape intelligent antenna array for radio communication system |
| CN1373918A (en) * | 1999-09-10 | 2002-10-09 | 艾利森电话股份有限公司 | Sparse array antenna |
| CN1507673A (en) * | 2001-04-16 | 2004-06-23 | �����ɷ� | Dual-band dual-polarized antenna array |
| CN1681160A (en) * | 2004-04-09 | 2005-10-12 | 大唐移动通信设备有限公司 | Curve intelligent antenna array and method for optimizing its structural parameter |
| CN1755986A (en) * | 2004-09-30 | 2006-04-05 | 北京信威通信技术股份有限公司 | Dual-polarization panel-shaped antenna used in TD-SCDMA system |
| CN1878023A (en) * | 2005-06-09 | 2006-12-13 | 大唐移动通信设备有限公司 | Method for forming MIMO array by using intelligent antenna array |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI502813B (en) * | 2012-07-13 | 2015-10-01 | Wistron Corp | Phased array smart antennas and operating methods thereof |
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| CN101047282A (en) | 2007-10-03 |
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Granted publication date: 20111130 Termination date: 20200424 |