CN108365319A - A kind of high-precision logarithm period element antenna integral forming method - Google Patents
A kind of high-precision logarithm period element antenna integral forming method Download PDFInfo
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- CN108365319A CN108365319A CN201711478005.5A CN201711478005A CN108365319A CN 108365319 A CN108365319 A CN 108365319A CN 201711478005 A CN201711478005 A CN 201711478005A CN 108365319 A CN108365319 A CN 108365319A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/364—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith using a particular conducting material, e.g. superconductor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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Abstract
The present invention proposes a kind of high-precision logarithm period element antenna integral forming method, and high-precision logarithm period element antenna primary structure includes the assembly line of pentagonal section and multilayer different length different cross section radiating doublet thereon is depended in integrated design.According to product job requirement, theoretical calculation and emulation carry out detailed construction design, select the material for meeting mission requirements, Complex Parts processing is carried out by the multiple combinations processing technology such as digital control processing, precision WEDM machine, deep hole machining, effective accuracy monitoring is carried out to complex appearance of the present invention by means of 3D laser scanners after completing processing and screens qualified parts, it is ensured that the structural integrity between converted products ensures the log-periodic antenna requirement on electric performance after assembly.The present invention efficiently solves the problems such as high phase place consistency between L/S/C wave band different pairs periodic antennas, broadband, wide direction figure and high-gain, product weight is effectively reduced simultaneously, improve product structure intensity, observing and controlling class log-periodic antenna use scope is widened, the different application field of product is adapted to.
Description
Technical field
The invention belongs to observing and controlling class log-periodic antenna Development Techniques fields, and in particular to a kind of high-precision logarithm period shakes
Sub-antenna integral forming method.
Background technology
Element antenna is log-periodic antenna important set member, is mainly shaken by the radiation of assembly line, different cross section and length
The compositions such as son, in detail as shown in Figure 1, radiating doublet positional precision directly determines the electrical performance indexes of antenna everywhere.Common radiation
Oscillator and assembly line moulding process be mainly spirally connected, weld, riveting, the methods of gluing, and it is low that disadvantage is primarily present mechanical precision,
The defects of weight is high, mechanics reliability is relatively low.
Observing and controlling class log-periodic antenna is mainly used for the interferometry of wide-angle, and there are two aspects for such antenna
Technological difficulties：
1, the wide angle gain performance of antenna：The gain performance of antenna is to influence the important indicator of system sensitivity, it is ensured that day
Gain performance of the design of line in 60 ° of wide-angles, broad frequency range is the key technology and difficult point of Antenna Design；
2, with the phase equalization between frequency range different antennae：This index is related to measurement and the positioning accuracy of system,
How to ensure the phase equalization between common-frequency aerial, is antenna manufacture, assembly and the key technology in test process and emphasis；
Radiating doublet common at present is difficult to meet the high phase place of log-periodic antenna, high wide angle with assembly line moulding process
The requirement of gain.
Invention content
In order to solve the problems existing in the prior art, the high-precision configuration size of element antenna is improved, the present invention proposes a kind of
High-precision logarithm period element antenna integral forming method ensures high phase place one between L/S/C wave band different pairs periodic antennas
The requirement of cause property, broadband, wide direction figure and high-gain, while product weight is effectively reduced, product structure intensity is improved, is widened
Observing and controlling class log-periodic antenna use scope adapts to the different application field of product.
In the design process, assembly line and radiating doublet use integrated design to logarithm period element antenna, using numerical control
Processing, precision WEDM machine and deep hole processing technology ensure the structure precision of product, are swept using hand-held 3D laser after completing processing
Instrument (accuracy of detection 0.05mm) detection Product Precision is retouched, while optimizing structure feature, improves mechanical property, the electrical property of product,
Reduce effective product weight.
Log-periodic antenna is made of N number of oscillator arranged in parallel, distance R of the adjacent vibration generators to geometry vertex OnAnd Rn+1,
Oscillator length lnAnd ln+1, the distance between adjacent vibration generators dnAnd dn+1Meet following relationship：
Rn+1/Rn=ln+1/ln=dn+1/dn=τ
τ claims periodic law, another parameter of log-periodic antenna is spacing factor σ, is defined as：
σ=dn/2ln
σ and τ is smaller than 1 invariant, once σ and τ are determined, the geometry of entire log-periodic antenna also with
Determination the relationship between σ and τ can be obtained, i.e., by geometrical relationship
σ=(1- τ)/(α/2 4tg)
Wherein α is the angle between log-periodic antenna contour line, also referred to as the subtended angle of log-periodic antenna.
According to above-mentioned computational methods, the emulation of observing and controlling frequency range can be required to obtain the detailed skill of element antenna according to different task
Art requirement.
Based on above-mentioned principle, the technical scheme is that：
A kind of high-precision logarithm period element antenna integral forming method, it is characterised in that：Include the following steps：
Step 1：According to the bandwidth of operation of antenna, the electricity on the antenna pattern of working band internal antenna, gain and feeder line
Standing-wave ratio requirement is pressed, determines the geometrical scale of antenna；
Wherein assembly line uses pentagon to design in the longitudinal direction, and has five sides on length direction inside assembly line
Shape through-hole designs rectangular section journal stirrup and pilot hole in assembly line two bottom sides, and in assembly, assembly line bottom journal stirrup can be determined
In antenna base；
Radiating doublet uses square section, is cantilever beam structure form, and lightening hole is provided with inside radiating doublet；Radiation
Oscillator both sides root uses the round-corner transition of different radii with assembly line；
Assembly line is designed with radiating doublet using global formation；
Step 2：Selection, and the geometrical scale of the antenna determined according to step 1 carry out global formation to material and add
Work：
Step 2.1：Plate cutting, and miller roughing is carried out, annealing destressing processing is carried out later；
Step 2.2：Shape milling machine Precision Machining is carried out, then assembly line rectangular edge is carried out using CNC milling machine and is processed into
Shape carries out radiating doublet lightening hole digital control processing later；Process detection is carried out after processing is completed, detects qualified carry out in next step
Suddenly：
Step 2.3：Carry out element antenna feed chamber processing：It is divided into feed chamber deep hole machining and low-speed WEDM processing；
Slow wire feeding radiating doublet linear cutter is carried out later；Process detection is carried out after processing is completed, detects qualified progress next step：
Step 2.4：Surface chemistry electric conductive oxidation processing is carried out, carries out blind hole cleaning and drying later；
Step 2.5：Using 3D laser detection element antenna shapes, the qualified logarithm period element antenna of detection is obtained.
Further preferred embodiment, a kind of high-precision logarithm period element antenna integral forming method, feature exist
In：Assembly line is designed using variable cross-section, is gradually increased by top-to-bottom wall thickness；The pentagonal section of assembly line, which uses, has two
The symmetrical pentagon at a adjacent 90 ° of angles.
Further preferred embodiment, a kind of high-precision logarithm period element antenna integral forming method, feature exist
In：The material selected is 2A12-T4 aluminum alloy plate materials.
Advantageous effect
High-precision logarithm period element antenna primary structure in the present invention includes the assembly line and one of pentagonal section
Bodyization design depends on multilayer different length different cross section radiating doublet thereon.According to product job requirement, theoretical calculation and imitative
It is true to carry out detailed construction design, the material for meeting mission requirements is selected, by digital control processing, precision WEDM machine, deep hole machining etc.
Multiple combinations processing technology carry out Complex Parts processing, complete processing after by means of 3D laser scanners to complex appearance of the present invention into
Row effective accuracy monitors and screens qualified parts, it is ensured that the structural integrity between converted products ensures the logarithm period after assembly
Antenna electric performance requirement.The present invention efficiently solves high phase place consistency, wideband between L/S/C wave band different pairs periodic antennas
The problems such as band, wide direction figure and high-gain, while product weight is effectively reduced, product structure intensity is improved, observing and controlling class pair is widened
One number time, antenna use scope, adapted to the different application field of product.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination following accompanying drawings to embodiment
Obviously and it is readily appreciated that, wherein：
Fig. 1：Common element antenna structure composition schematic diagram；
Fig. 2：High-precision element antenna integrated molding structural schematic diagram；(a) front view；(b) left view；(c) axonometric drawing；
Wherein：1. element antenna assembly line；2. the multilayer radiating doublet of element antenna different length and section；3. element antenna assembly connects
Mouthful；
Fig. 3：Log-periodic antenna geometrical principle schematic diagram；
Fig. 4：The assembly line schematic cross-section of element antenna of the present invention；
Fig. 5：The radiating doublet schematic cross-section of element antenna of the present invention；(a) element antenna axonometric drawing；(b) A-A section views
Figure；(c) enlarged drawing；
Fig. 6：The assembly line Assembly interface schematic diagram of element antenna of the present invention；
Fig. 7：Global formation element antenna Analysis of test results of the present invention；
Fig. 8：Processing process figure.
Specific implementation mode
The embodiment of the present invention is described below in detail, the embodiment is exemplary, it is intended to for explaining the present invention, and
It is not considered as limiting the invention.
The element antenna of log-periodic antenna is mainly made of the radiating doublet of pentagon assembly line and multilayer rectangle section,
Mainly embodiment is carried out in terms of the structure design of element antenna, material selection, moulding process and detection methods etc. are several
It elaborates.
1, high-precision global formation element antenna structure design
The design of element antenna is the bandwidth of operation for needing to propose antenna according to use occasion, working band internal antenna
The requirements such as the voltage standing wave ratio on antenna pattern, gain and feeder line determine the geometrical scale of antenna.
Assembly line structure design：
To provide assembly line structural strength while reducing product weight, according to antenna electromagnetism simulation result, assembly line is in length
It spends on direction and is designed using pentagon, while considering, in assembly line mounted inside feed system, to adopt along assembly line length direction
With pentagon via design, using deep hole machining and precision WEDM machine moulding process.Assembly line section form is set using variable cross-section
Meter, is gradually increased by top-to-bottom wall thickness；Using tool, there are two symmetrical five sides at adjacent 90 ° of angles for the pentagonal section of assembly line
Shape, when element antenna assembles, assembly line right-angle side direction is located at center of antenna axis, is conducive to antenna electric performance commissioning, structure
In detail as shown in Figure 4.
Radiating doublet structure determination：
Because the assembly line and multilayer radiating doublet of element antenna use design method, processed for ease of product, to spoke
The section for penetrating oscillator uses square section form, in detail as shown in Figure 5.To provide radiating doublet root intensity, using different circles
Angle interim form ensures mechanical property.Consider that radiating doublet is cantilever beam structure form simultaneously, to reduce radiating doublet cantilever matter
The heart position deep hole processing technology can be used to ensure to radiating doublet using pore structure is mitigated.
Assembly interface designs：
Demand is assembled to meet element antenna, designs rectangular section journal stirrup and pilot hole in assembly line basal cross section both sides, in detail
As shown in Figure 6, assembly line journal stirrup section is fully positioned in antenna base when assembly, ensures element antenna assembly precision.
2, material selection：
The feature of antenna product is fully considered in material selection：Material surface electrical conductivity and material mechanical performance,
Choose aluminum alloy plate materials, trade mark 2A12-T4, it is ensured that product requirement uses at electric conductive oxidation surface after completing processing
Science and engineering skill.
3, high-precision monolithic molding element antenna moulding technique
High-precision monolithic molding element antenna moulding process relate generally to heat treatment, CNC milling machine processing, deep hole machining and
Low-speed WEDM is processed, and heat treatment mainly solves the deformation of workpiece in process, and it is multiple that CNC milling machine processing solves product
Miscellaneous shape ensures that machining accuracy, deep hole machining and wire cutting technology are mainly used for the high-precision forming of milling machine blind hole, process in detail
Technological process as shown in Figure 8,
4, detection technique：
HandySCAN 3D laser scanners are mainly used in detection process, at substantially 0.25 meter away from measured object, are used
Hand holds scanner alignment measured object, and the 7 beam laser cross-beams launched can cover 0.25X0.275 meters of ranges, carry out polygonal
Degree motion scan makes laser beam beam quickly streak measured object institute according to the measurand strong point cloud of simultaneous display on computer screen
There is surface, the huge measured object 3 d space coordinate value of data volume (480,000 measuring points/second) can be obtained rapidly, measuring accuracy meets
0.03mm, resolution ratio meet 0.05mm, are provided simultaneously with high repeatability and traceability, and structure detection result is shown in Fig. 7 institutes
Show.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are not departing from the principle of the present invention and objective
In the case of can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention.
Claims (3)
1. a kind of high-precision logarithm period element antenna integral forming method, it is characterised in that：Include the following steps：
Step 1：According to the bandwidth of operation of antenna, the voltage on the antenna pattern of working band internal antenna, gain and feeder line is stayed
Bobbi requirement, determines the geometrical scale of antenna；
Wherein assembly line uses pentagon to design in the longitudinal direction, and has the pentagon on length direction logical inside assembly line
Rectangular section journal stirrup and pilot hole are designed in hole in assembly line two bottom sides, and in assembly, assembly line bottom journal stirrup can be positioned at
In antenna base；
Radiating doublet uses square section, is cantilever beam structure form, and lightening hole is provided with inside radiating doublet；Radiating doublet
Both sides root uses the round-corner transition of different radii with assembly line；
Assembly line is designed with radiating doublet using global formation；
Step 2：Selection, and the geometrical scale of the antenna determined according to step 1 carry out global formation processing to material：
Step 2.1：Plate cutting, and miller roughing is carried out, annealing destressing processing is carried out later；
Step 2.2：Shape milling machine Precision Machining is carried out, then assembly line rectangular edge is carried out using CNC milling machine and is shaped, it
Radiating doublet lightening hole digital control processing is carried out afterwards；Process detection is carried out after processing is completed, detects qualified progress next step：
Step 2.3：Carry out element antenna feed chamber processing：It is divided into feed chamber deep hole machining and low-speed WEDM processing；Later
Carry out slow wire feeding radiating doublet linear cutter；Process detection is carried out after processing is completed, detects qualified progress next step：
Step 2.4：Surface chemistry electric conductive oxidation processing is carried out, carries out blind hole cleaning and drying later；
Step 2.5：Using 3D laser detection element antenna shapes, the qualified logarithm period element antenna of detection is obtained.
2. a kind of high-precision logarithm period element antenna integral forming method according to claim 1, it is characterised in that：Set
Line is designed using variable cross-section, is gradually increased by top-to-bottom wall thickness；Using tool, there are two adjacent for the pentagonal section of assembly line
The symmetrical pentagon at 90 ° of angles.
3. a kind of high-precision logarithm period element antenna integral forming method according to claim 1, it is characterised in that：Selection
Material be 2A12-T4 aluminum alloy plate materials.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711478005.5A CN108365319A (en) | 2017-12-29 | 2017-12-29 | A kind of high-precision logarithm period element antenna integral forming method |
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| CN201711478005.5A CN108365319A (en) | 2017-12-29 | 2017-12-29 | A kind of high-precision logarithm period element antenna integral forming method |
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| CN108365319A true CN108365319A (en) | 2018-08-03 |
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| CN201711478005.5A Pending CN108365319A (en) | 2017-12-29 | 2017-12-29 | A kind of high-precision logarithm period element antenna integral forming method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114101978A (en) * | 2021-11-27 | 2022-03-01 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | Novel assembly line structure and manufacturing method thereof |
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|---|---|---|---|---|
| CN2874806Y (en) * | 2006-01-10 | 2007-02-28 | 深圳国人通信有限公司 | Log-periodical antenna |
| CN101188327A (en) * | 2006-11-16 | 2008-05-28 | Tdk股份有限公司 | Log period dipole array (LPDA) antenna and method of making |
| CN103956550A (en) * | 2014-04-24 | 2014-07-30 | 成都锦江电子系统工程有限公司 | Self-positioning broadside electric bridge waveguide and vacuum brazing technology thereof |
| KR20150064826A (en) * | 2013-12-04 | 2015-06-12 | 주식회사 굿텔 | Log periodic antenna system of cross type |
| CN204441454U (en) * | 2015-01-07 | 2015-07-01 | 深圳信息职业技术学院 | Sheet logarithm antenna element and logarithm periodic antenna thereof |
-
2017
- 2017-12-29 CN CN201711478005.5A patent/CN108365319A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2874806Y (en) * | 2006-01-10 | 2007-02-28 | 深圳国人通信有限公司 | Log-periodical antenna |
| CN101188327A (en) * | 2006-11-16 | 2008-05-28 | Tdk股份有限公司 | Log period dipole array (LPDA) antenna and method of making |
| KR20150064826A (en) * | 2013-12-04 | 2015-06-12 | 주식회사 굿텔 | Log periodic antenna system of cross type |
| CN103956550A (en) * | 2014-04-24 | 2014-07-30 | 成都锦江电子系统工程有限公司 | Self-positioning broadside electric bridge waveguide and vacuum brazing technology thereof |
| CN204441454U (en) * | 2015-01-07 | 2015-07-01 | 深圳信息职业技术学院 | Sheet logarithm antenna element and logarithm periodic antenna thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114101978A (en) * | 2021-11-27 | 2022-03-01 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | Novel assembly line structure and manufacturing method thereof |
| CN114101978B (en) * | 2021-11-27 | 2023-10-20 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | Collecting line structure and manufacturing method thereof |
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Application publication date: 20180803 |