CN105356068B - A kind of Optimization Design of broadband feed - Google Patents
A kind of Optimization Design of broadband feed Download PDFInfo
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- CN105356068B CN105356068B CN201510657113.3A CN201510657113A CN105356068B CN 105356068 B CN105356068 B CN 105356068B CN 201510657113 A CN201510657113 A CN 201510657113A CN 105356068 B CN105356068 B CN 105356068B
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- broadband feed
- feed
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- broadband
- reflector antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
- H01Q15/141—Apparatus or processes specially adapted for manufacturing reflecting surfaces
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
The present invention relates to a kind of Optimization Design of broadband feed, it is characterised in that：The Optimization Design of the broadband feed, breach the thinking for being designed illumination angle, irradiation level as reflecting surface and feed interface in conventional method, feed is substituted into specific reflector antenna system and is designed, evaluation criterion is used as using the gain of reflector antenna or G/T values.So as to the equilibrium problem between multiple performance indications in fundamentally solving conventional Feed Design, the purpose that antenna performance is optimal in broadband is realized, suitable for the design of various reflector antenna broadbands feed.
Description
Technical field
The invention discloses a kind of Optimization Design of broadband feed, breaches illumination angle, irradiation in conventional method
The thinking that level is designed as reflecting surface in feed interface, feed is substituted into specific reflector antenna system and set
Meter, evaluation criterion is used as using the gain of reflector antenna or G/T values.So as to more individual characteies in fundamentally solving conventional Feed Design
Equilibrium problem between energy index, realizes the purpose that antenna performance is optimal in broadband, suitable for various reflector antennas
The design of broadband feed.
Background technology
Reflector antenna is most important high-gain aerial, is led in satellite communication, navigation, survey of deep space, radio astronomy etc.
Domain is widely used.Reflector antenna design can be divided into reflector design and Feed Design two parts.At present, reflecting surface
Design is with Feed Design typically using illumination angle and irradiation level as interface, and designing two portions are relatively independent, and this method subtracts significantly
The workload of Antenna Design is lacked.
Because feed has multinomial technical indicator, these indexs such as change, the Phase center variations such as irradiation level, wave beam can be comprehensive
Group photo rings the overall performance of antenna, therefore is difficult to accept or reject in the design.And reflecting surface is usually to be carried out based on Gaussian illumination
Design, it is optimal that the antenna performance so designed, which is difficult to ensure that,.Especially in the Feed Design of broadband, feed is described
The all technical of energy changes greatly with frequency, it is difficult to realizes in the optimal target of broadband interior reflective surface antenna performance.
The content of the invention
A kind of optimization design of broadband feed is provided it is an object of the invention to avoid the weak point in background technology
Method.
The technical solution used in the present invention is：
A kind of Optimization Design of broadband feed, it is characterised in that comprise the following steps：
(1) design parameter of broadband feed is chosen as optimized variable, and gives the initial value of these design parameters；
(2) according to the initial design parameters of selection, simulation analysis are carried out to broadband feed, obtain the performance ginseng of broadband feed
Number；The performance parameter of broadband feed includes antenna pattern and voltage standing wave ratio；
(3) performance parameter of the broadband feed obtained in step (2) is substituted into specific reflector antenna and emulated
Calculate, obtain the antenna pattern of reflector antenna, the property of reflector antenna is drawn according to the antenna pattern of reflector antenna
Energy parameter, the performance parameter of reflector antenna include gain, the first sidelobe level and G/T values；
(4) using the performance parameter of reflector antenna as evaluation criterion, using optimized algorithm, part to broadband feed or
Whole initial design parameters optimize, and obtain the broadband Feed Design ginseng after the optimization for being optimal reflector antenna performance
Count and as the final design parameter of broadband feed；
Complete the optimization design of broadband feed.
Wherein, ripple slot form, quantity, groove depth, groove width, loudspeaker are included for corrugated horn, the design parameter of broadband feed
Inwall curve, input, delivery outlet size；For quadruple ridged horn, the design parameter of broadband feed includes horn mouth diameter, loudspeaker
Inwall curve, ridge curve, ridge width, reflection cavity form and size.
Wherein, the method for the simulation calculation in step (3) except using practical application reflector antenna in addition to, can also use etc.
Imitate parabola method, equivalent mouth face field method, focal plane field matching method or interarea occlusion method.
Wherein, the optimized algorithm in step (4) includes global and local optimized algorithm.
The present invention has the following advantages that compared with background technology：
1. the present invention has broken " the original barrier " of reflection surface system and feed, the two is considered as an entirety, actual
Feed is placed in reflector design, using the best performance of antenna as design criteria, and carries out both optimal on this basis
Change design, so as to the equilibrium problem between multiple performance indications when fundamentally solving conventional broadband Feed Design.
2. suitable for the design of various reflector antenna broadbands feed.
Brief description of the drawings
Fig. 1 is the mentality of designing flow chart of the present invention.
Fig. 2 is the broadband feed optimization design flow chart of the present invention
Embodiment：
Reference picture 1, a kind of Optimization Designs of broadband feed of Fig. 2, it is characterised in that comprise the following steps：
(1) design parameter of broadband feed is chosen as optimized variable, and gives the initial value of these design parameters；
Selection corrugated horn includes ripple flute profile as optimization design object, the design parameter of step (1) middle width strip feed
Formula, quantity, groove depth, groove width, loudspeaker inwall curve, input, delivery outlet size.Groove depth and groove width are chosen as optimization design pair
As remaining design parameter takes definite value.Each design parameter as optimization design object selects each N number of numerical value, joins as design
Several initial values, form N groups initial design parameters and form initial design parameters population；Wherein, some in every group of design parameter
Initial design parameters value can initial design parameters value corresponding with another group it is identical or different.N is the natural number more than 1.
(2) according to the design parameter of selection, simulation analysis is carried out to broadband feed, obtain the performance parameter of broadband feed；
The performance parameter of broadband feed includes antenna pattern and voltage standing wave ratio；
Using simulation software, performance simulation is carried out to corrugated horn corresponding to N group design parameters, obtains N group design parameters
Antenna pattern and voltage standing wave ratio of the corresponding corrugated horn in different frequency.
(3) performance parameter of the broadband feed obtained in step (2) is substituted into specific reflector antenna and emulated
Calculate, obtain the antenna pattern of reflector antenna, the property of reflector antenna is drawn according to the antenna pattern of reflector antenna
Energy parameter, the performance parameter of reflector antenna include gain, the first sidelobe level and G/T values；
Using the reflecting surface day in corrugated horn irradiation practical application corresponding to the N group design parameters obtained in step (2)
Line, using geometrical optics approach and geometric theory of diffraction, physical optical method and physics diffraction, or full-wave method, divided
The directional diagram of reflector antenna, anti-to calculate gain, the first sidelobe level and G/T values etc. not under the irradiation of N number of corrugated horn
Penetrate the performance parameter of surface antenna.
(4) using the performance parameter of reflector antenna as evaluation criterion, the ripple loudspeaker for meeting design requirement is analysed whether
.If so, then export design parameter corresponding to the corrugated horn, otherwise using optimized algorithm, part to broadband feed or
Whole design parameters optimize, until there is one group of design parameter reflector antenna performance is met design requirement, and by the group
Parameter and as broadband feed final design parameter export.
By taking genetic algorithm as an example, if one group of parameter is not present in initial design parameters population, make ripple corresponding to this group of parameter
Line loudspeaker meet design requirement, then initial design parameters population are selected, intersected and mutation operation, form setting for a new generation
Count parameter population.Step (2) is then back to, performs step (2), step (3), step (4) successively, until certain group design parameter is expired
Sufficient design requirement, and by this group of parameter and as the final design parameter of broadband feed.
Complete the optimization design of broadband feed.
Claims (4)
1. a kind of Optimization Design of broadband feed, it is characterised in that comprise the following steps：
(1) geometric parameter of broadband feed is chosen as optimized variable, and gives the initial value of these geometric parameters；
(2) according to the initial designs geometric parameter of selection, simulation analysis are carried out to broadband feed, obtain the performance ginseng of broadband feed
Number；The performance parameter of broadband feed includes antenna pattern and voltage standing wave ratio；
(3) performance parameter of the broadband feed obtained in step (2) is substituted into specific reflector antenna and carries out simulation calculation,
The antenna pattern of reflector antenna is obtained, the performance for drawing reflector antenna according to the antenna pattern of reflector antenna is joined
Number, the performance parameter of reflector antenna include gain, the first sidelobe level and G/T values；
(4) using the performance parameter of reflector antenna as evaluation criterion, using optimized algorithm, to the part or all of of broadband feed
Initial designs geometric parameter optimizes, and obtains the broadband feed geometric parameters after the optimization for being optimal reflector antenna performance
Count and as the final design geometric parameter of broadband feed；
Complete the optimization design of broadband feed.
A kind of 2. Optimization Design of broadband feed according to claim 1, it is characterised in that：For corrugated horn day
Line, the initial designs geometric parameter of broadband feed include ripple slot form, quantity, groove depth, groove width, loudspeaker inwall curve, input,
Delivery outlet size；For quadruple ridged horn antenna, the initial designs geometric parameter of broadband feed includes horn mouth diameter, loudspeaker inwall
Curve, ridge curve, ridge width, reflection cavity form and size.
A kind of 3. Optimization Design of broadband feed according to claim 1, it is characterised in that：Emulation in step (3)
The method of calculating except using practical application reflector antenna in addition to, can also use equivalent parabola method, equivalent mouth face field method,
Focal plane field matching method or interarea occlusion method.
A kind of 4. Optimization Design of broadband feed according to claim 1, it is characterised in that：Optimization in step (4)
Algorithm includes global and local optimized algorithm.
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| CN201510657113.3A CN105356068B (en) | 2015-10-12 | 2015-10-12 | A kind of Optimization Design of broadband feed |
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| CN201510657113.3A CN105356068B (en) | 2015-10-12 | 2015-10-12 | A kind of Optimization Design of broadband feed |
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| CN105356068A CN105356068A (en) | 2016-02-24 |
| CN105356068B true CN105356068B (en) | 2018-01-30 |
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| CN109858198A (en) * | 2019-04-11 | 2019-06-07 | 中国科学院新疆天文台 | A kind of microwave vacuum window design method of combination feed |
| CN110222422A (en) * | 2019-06-06 | 2019-09-10 | 安徽工业大学 | A kind of efficiently special multiple-beam array Feed Design method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103178359A (en) * | 2013-03-05 | 2013-06-26 | 浙江大学 | Method for designing conformal array antennas distributed in aperture field of spherical cap |
| CN103488817A (en) * | 2013-09-02 | 2014-01-01 | 西安电子科技大学 | Feed source position compensation method of large-scale deformed single reflection surface antenna |
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| US10431900B2 (en) * | 2013-01-24 | 2019-10-01 | Agence Spatiale Europeenne | Array antenna with optimized elements positions and dimensions |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103178359A (en) * | 2013-03-05 | 2013-06-26 | 浙江大学 | Method for designing conformal array antennas distributed in aperture field of spherical cap |
| CN103488817A (en) * | 2013-09-02 | 2014-01-01 | 西安电子科技大学 | Feed source position compensation method of large-scale deformed single reflection surface antenna |
Non-Patent Citations (1)
| Title |
|---|
| 超宽带脉冲辐射天线的馈源设计与优化;孙博等;《天津大学学报》;20101231;第43卷(第12期);全文 * |
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