CN106649948A - Automated design and optimization method for broadband antenna on the basis of shape blending algorithm - Google Patents
Automated design and optimization method for broadband antenna on the basis of shape blending algorithm Download PDFInfo
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- CN106649948A CN106649948A CN201610871162.1A CN201610871162A CN106649948A CN 106649948 A CN106649948 A CN 106649948A CN 201610871162 A CN201610871162 A CN 201610871162A CN 106649948 A CN106649948 A CN 106649948A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
Abstract
The invention discloses an automated design and optimization method for a broadband antenna on the basis of a shape blending algorithm. The method is characterized in that two basic antennae are selected according to the requirement of antenna bandwidth, wherein the two basic antennae are respectively a CPW (Coplanar Waveguide) feeding round radiation patch wide-slot antenna and a CPW feeding rhombic radiation patch wide-slot antenna, and the shapes of the radiation patches of the two basic antennae are respectively roundness and rhombus; the roundness and the rhombus in the above two antennae are extracted to independently serve as an initial shape and a target shape, and then, shape fusion is carried out; and the initial shape and the target shape are subjected to feature point selection and correspondence, interpolation is carried out after a corresponding feature point is obtained so as to obtain one series of shapes, and one series of antennae can be obtained. By use of the method, a search space is reduced, algorithm efficiency is obviously improved, calculation time is saved, an antenna dimension is reduced, one series of antennae can be easily obtained, and a plurality of results can be obtained through one-time design so as to greatly improve design efficiency.
Description
Technical field
The present invention relates to the Automation Design and optimization method of a kind of antenna, belong to antenna technical field.
Background technology
One important step of broadband antenna design is to determine the geometry of antenna, and great majority are several to ultra-wideband antenna
The design of what structure is all based on the experience of designer and obtains an initial or general structure, then recycles full-wave simulation
Software removes the parameters of simulation optimization antenna.And the geometry of antenna presents the trend for becoming increasingly complex, this is undoubtedly
Increased the difficulty of antenna making.
At present the full-wave simulation software with Ansoft HFSS as representative is typically only suitable for single parameter or multiple parameters
Scanning and optimization be simple linear scan, so the process that parameters are optimized successively is possible to simply to obtain office
Portion's optimal solution, can not always obtain the optimal performance of antenna.Another kind of common mode is that the whole to parameters takes
Value scope is scanned, and because the scanning to parameter and optimization are typically all linear, therefore multiple parameters is being carried out simultaneously
During scanning optimization, its efficiency will be substantially reduced.
Additionally, the antenna design method autgmentability of the experience of this excessive dependence designer is very poor, typically it is only suitable for design
Very specific antenna, the size to antenna, dielectric constant and thickness of substrate media etc. will compare strict requirements.Work as needs
When changing a kind of substrate media, the performance of the antenna designed by possible same antenna structure is just unable to reach required index, so
Its range of application is just substantially reduced, it is also difficult to real active computer the Automation Design ultra-wideband antenna.So, it would be desirable to find
Autgmentability and universality more preferably, the wider array of UWB automated antenna designs of range of application and optimization method.
The content of the invention
The invention mainly solves the technical problem of providing a kind of broad-band antenna the Automation Design and optimization method, the method
Without relying on the electromagnetic theory knowledge and experience of antenna designers, disclosure satisfy that different wireless systems will for the performance of antenna
Ask, substantially increase the design efficiency of broad-band antenna, and with good autgmentability and universality, applied range.
To solve above-mentioned technical problem, the technical solution used in the present invention is：Shape blending algorithm is applied into plane print
In the Automation Design or optimization process of the geometry locally or globally of brush antenna.Its feature is comprised the following steps：Root
According to the performance requirement of antenna, such as the beamwidth of antenna, one group of flat plane antenna with basic geometry is obtained；By to these
Obtaining some new geometries, these new shapes have simultaneously for the fusion of the geometry in antenna locally or globally
Some characteristics of original shape and target shape, so the performance of the antenna with these new shape radiation patch also has simultaneously
Certain some Performance Characteristics of original shape radiation patch antenna and target shape radiation patch antenna, so as to obtain more preferable antenna
Performance.
A kind of described broad-band antenna the Automation Design based on shape blending algorithm specifically includes following with optimization method
Step：
One：According to the requirement of the beamwidth of antenna, two basic antennas are chosen, be respectively CPW feed circular radiation paster width seams
Gap antenna feeds rhombus radiation patch wide-slot antenna with CPW, and the shape of their radiation patch is respectively circular and rhombus.
Two：Circle in above two antenna and rhombus are extracted, respectively as original shape and target shape, is entered
Row shape blending.Selection and the correspondence of characteristic point are carried out to original shape and target shape, obtains being carried out after corresponding characteristic point
Interpolation, such that it is able to obtain a series of shape.
Three：According to step 2, a series of antenna can be obtained, with the different beamwidth of antenna, so as to meet not homology
The demand of system or the bandwidth to antenna improve.
Described selection and correspondence that characteristic point is carried out to original shape and target shape, specifically includes following steps：
Step 1：The center of original shape and target shape is overlapped on origin；
Step 2：Multiple characteristic points are have chosen on original shape, is then connected multiple characteristic points with origin respectively, shape
Into multiple crosspoints of a plurality of ray, a plurality of ray for obtaining and target shape, feature of these crosspoints as target shape
Point；
Step 3：Multiple characteristic points of original shape and multiple characteristic points of target shape are carried out corresponding.
The broad-band antenna the Automation Design based on shape blending algorithm of the present invention has following beneficial effect with optimized algorithm
Really：
(1) compare with traditional genetic algorithm, this new algorithm reduces search space, have in terms of efficiency of algorithm compared with
For significantly raising, the calculating time is saved, also reduced on antenna size.
(2) this new method has good autgmentability and universality, can be applied not only to broad-band antenna and sets automatically
Meter and optimization, it is also possible to be applied to the design and optimization process of other kinds antenna.
(3) this new method can be readily obtained a series of antennas, accomplish a secondary design, multiple results, so as to significantly
Improve the efficiency of design.
Description of the drawings
Fig. 1 one embodiment of the invention is applied to the basic structure that CPW structures feed rectangle wide-slot antenna；
The original shape and target shape of Fig. 2 embodiments；
Ray firing algorithms selections corresponding points schematic diagram in Fig. 3 embodiments；
It is circular produced with rhombus fusion variously-shaped in Fig. 4 embodiments；
Corresponding return loss S of radiation patch of different shapes in Fig. 5 embodiments11；
The final geometry mechanism of Fig. 6 embodiments；
Fig. 7 embodiment voltage standing wave ratio simulation results and measured result.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only that the present invention is specific at one of coplanar wave guide feedback wide-slot antenna
Embodiment, rather than the embodiment of whole.Based on embodiments of the invention, those of ordinary skill in the art are not making creation
Property work under the premise of the every other embodiment that obtained, belong to the scope of protection of the invention.
For coplanar wave guide feedback wide-slot antenna, the performance of the geometry of aerial radiation paster to antenna, particularly
Impedance bandwidth has very big impact.In the present embodiment, in order to find the radiation patch for now causing antenna performance parameters index optimal
The shape and size size of piece, the Automation Design has been carried out to the radiation patch of antenna with optimization using shape blending algorithm.
The basic geometry of antenna is as shown in Figure 1.The thickness of the substrate that antenna is printed is 0.508mm, normal with respect to dielectric
Number is 3.66, and loss angle tangent is 0.004, and the size of whole flat plane antenna is W × L.Coplanar wave guide feedback line width s is
1.0mm, feed line is 0.2mm with the gap g on floor.The boundary rectangle size of the radiation patch of connection coplanar waveguide feeder line is w
× l, is W to size as shown in dotted line frame in Fig. 11×L1Ground plane on rectangle width gap enter row energization.Dotted line frame institute table
The aerial radiation paster for showing is exactly the part for needing the Automation Design to optimize.Remaining size of antenna structure is specific as follows：
L=W=32mm, h=0.787mm, L1=26mm, W1=16.8mm, d=7.2mm, g=0.2mm, s=1.0mm,
Dw=0.13mm, l=12mm, w=12mm
Specifically include following steps：
(1) according to the requirement of the beamwidth of antenna, two basic antennas are chosen, is respectively CPW feed circular radiation paster width seams
Gap antenna feeds rhombus radiation patch wide-slot antenna with CPW, and the shape of their radiation patch is respectively circular and rhombus.
(2) circle in above two antenna and rhombus are extracted, respectively as original shape and target shape, is entered
Row shape blending, as shown in Figure 2.Selection and the correspondence of characteristic point are carried out using Ray firing methods.Such as Fig. 3, by circular and water chestnut
Shape is placed under the same coordinate system so that their center overlaps on origin.12 characteristic points A are have chosen in circle1-A12,
Then with origin line 12 rays are formed respectively, this 12 rays and rhombus produce 12 intersection points Bs1-B12, as the spy of rhombus
Levy a little.A1-A12B is corresponded to respectively1-B12.Interpolation method adopts simple linear interpolation, and shape C for obtaining merging can be by following formula table
Show：
C (t)=(1-t) A+tB
=[(1-t) A1+tB1..., (1-t) An+tBn]
=[C1(t) ..., Cn(t)]
Wherein n=12, t are shape blending coefficients.A series of new shape for producing is as shown in Figure 4.
(3) according to step 2, a series of antenna can be obtained, with the different beamwidth of antenna, so as to meet different system
Demand or the bandwidth of antenna is improved.
The value of different t, obtains the radiation patch and antenna of different shapes, return loss S of these antenna11Emulation
As a result it is as shown in Figure 5.From fig. 5, it is seen that when the value of t starts gradually to increase from 0, the impedance bandwidth performance of antenna is progressively
Improve, as t=1.3, the impedance bandwidth of antenna is optimal value, and can cover whole UWB frequency ranges.Now corresponding spoke
Penetrate paster shape and last antenna geometry it is as shown in Figure 6.
Fig. 7 gives emulation and the comparative result tested.As illustrated, the impedance bandwidth measured result of antenna is 3.05-
11.7GHz, actual measurement relative bandwidth is 117%, and simulation result is 2.48-12.12GHz, and emulation relative bandwidth is 132%, in UWB
Return loss S in whole frequency range11Both less than -10dB.
Claims (2)
1. a kind of broad-band antenna the Automation Design and optimization method based on shape blending algorithm, it is characterised in that the method has
Body is comprised the following steps：
Step one：According to the requirement of the beamwidth of antenna, two basic antennas are chosen, be respectively CPW feed circular radiation paster width seams
Gap antenna feeds rhombus radiation patch wide-slot antenna with CPW, and the shape of their radiation patch is respectively circular and rhombus；
Step 2：Circle in above two antenna and rhombus are extracted, respectively as original shape and target shape, is entered
Row shape blending；Selection and the correspondence of characteristic point are carried out to original shape and target shape, obtains being carried out after corresponding characteristic point
Interpolation, such that it is able to obtain a series of shape；
Step 3：According to step 2, a series of antenna can be obtained, with the different beamwidth of antenna, so as to meet not homology
The demand of system or the bandwidth to antenna improve.
2. a kind of broad-band antenna the Automation Design and optimization method based on shape blending algorithm according to claim 1,
It is characterized in that：Described selection and correspondence that characteristic point is carried out to original shape and target shape, specifically includes following steps：
Step 1：The center of original shape and target shape is overlapped on origin；
Step 2：Multiple characteristic points are have chosen on original shape, is then connected multiple characteristic points with origin respectively, formed many
Multiple crosspoints of bar ray, a plurality of ray for obtaining and target shape, characteristic point of these crosspoints as target shape；
Step 3：Multiple characteristic points of original shape and multiple characteristic points of target shape are carried out corresponding.
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| CN201610871162.1A CN106649948A (en) | 2016-09-30 | 2016-09-30 | Automated design and optimization method for broadband antenna on the basis of shape blending algorithm |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111355021A (en) * | 2020-02-15 | 2020-06-30 | 杭州电子科技大学 | Bandwidth enhancement method based on self shape fusion |
| CN113300085A (en) * | 2021-05-25 | 2021-08-24 | 安徽大学 | 3G/4G/5G-oriented small broadband dual-polarized base station antenna unit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167602A (en) * | 2014-01-06 | 2014-11-26 | 上海大学 | Q-band one-way broadband millimeter wave circular polarization slot antenna |
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2016
- 2016-09-30 CN CN201610871162.1A patent/CN106649948A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167602A (en) * | 2014-01-06 | 2014-11-26 | 上海大学 | Q-band one-way broadband millimeter wave circular polarization slot antenna |
Non-Patent Citations (3)
| Title |
|---|
| AITING WU 等: "Printed Slot Antennas for Various Wideband Applications Using Shape Blending", 《INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING》 * |
| 吴爱婷 等: "一种具有三阻带特性的超宽带天线的设计与研究", 《微波学报》 * |
| 吴爱婷: "小型平面超宽带天线及自动化设计方法的研究", 《中国博士学位论文全文数据库 信息科技辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111355021A (en) * | 2020-02-15 | 2020-06-30 | 杭州电子科技大学 | Bandwidth enhancement method based on self shape fusion |
| CN111355021B (en) * | 2020-02-15 | 2022-05-03 | 杭州电子科技大学 | Bandwidth enhancement method based on self shape fusion |
| CN113300085A (en) * | 2021-05-25 | 2021-08-24 | 安徽大学 | 3G/4G/5G-oriented small broadband dual-polarized base station antenna unit |
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