CN209344325U - 80 unit long-line array helical array antenna of Ku wave band - Google Patents
80 unit long-line array helical array antenna of Ku wave band Download PDFInfo
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- CN209344325U CN209344325U CN201920432758.0U CN201920432758U CN209344325U CN 209344325 U CN209344325 U CN 209344325U CN 201920432758 U CN201920432758 U CN 201920432758U CN 209344325 U CN209344325 U CN 209344325U
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Abstract
The utility model discloses a kind of 80 unit long-line array helical array antennas of Ku wave band comprising rectangular waveguide, one end of rectangular waveguide are set as feed-in mouth, and the other end is provided with coaxial coupling unit；It is provided with coaxial output unit on rectangular waveguide, at least 80 coupling probes are provided in coaxial output unit, the lower end of each coupling probe is embedded in the wall of rectangular waveguide；The upper surface of coaxial output unit is provided at least 80 helical antennas；Coaxial coupling unit is connected with coaxial output unit.The utility model can evenly distribute the electromagnetic energy exported in high-power microwave source into each helical antenna, solve the problems, such as the densification of conformal antenna.
Description
Technical field
The utility model relates to field of array antennas, and in particular to a kind of 80 unit long-line array helical array day of Ku wave band
Line.
Background technique
In recent years, with the continuous development of High-Power Microwave technology, push people to the Gao Gong as its technology terminal
The research of rate microwave antenna art.Since the microwave of transmission has special high power, high-power microwave antenna is in addition to that will expire
Outside the good radiation index of foot, it is also necessary to reach several special including high power capacity, miniaturization, lightness etc. as far as possible
Target.Radial line helical array antenna is as a kind of planar array antenna form with special feed structure, because it has knot
The advantages such as structure utilization rate height, radiation efficiency height have obtained extensive concern.By to high-power radial line helical array antenna
Research, it was demonstrated that the cascade between submatrix can be reduced by increasing the number of unit of single submatrix to improve antenna gain
While reduce insertion loss；By rectangular grid, the investigation and comparison of triangular lattice cell layout mode, saving system is obtained
The method of cost；By the collaborative design of coupling probe and choke structure, the high-efficiency transfer design of radial line may be implemented.Battle array
Array antenna is that several radiating elements are arranged and motivated according to certain mode, utilizes the principle of interference of electromagnetic wave and folded
Add principle to realize the antenna form of microwave directed radiation, space by way of adding unit number and changing unit arrangement and
To improve the gain of array antenna, since microwave power to be assigned on multiple radiating elements, that each unit is only subjected to is smaller
Power and be easy to carry out the sealing of antenna so as to realize the high power capacity of antenna, by using various forms of spokes
Penetrating unit may be implemented the radiation of any polarized wave, and the miniaturization of antenna may be implemented by using suitable feed waveguide.
Using short helical antenna as antenna element, radial line extracts energy as feed waveguide and by coupling probe
Thinking, scholar devise a kind of 4 unit rectangle radial line spiral submatrixs first, the preliminary identification feasibility of the thinking [Zhao Liu,
Strong vault, Wu Xiao drop, wait .4 element radial line helical rectangular array antenna theory analysis and numerical simulation [J] light laser with
The particle beams, 2007.19 (11): 1869-1872], and high power single, the double-deck radial linear array are further studied on this basis
Antenna has also been reached the GW grade high power capacity of array antenna system, has further been tested while microwave orients circular polarization radiation
The realizability of high-power radial line array antenna design thought has been demonstrate,proved, and has specified that it has that structure size is small, directionality
Height, being easy to the advantages that radiating circularly polarised wave, [Li Xiangqiang, Liu Qing think that Zhao Liu waits high power single layer radial line helical array antenna
Design and simulation [J] light laser and the particle beams, 2005.17 (11): 1712-1716], [Liu Qing thinks, Li Xiangqiang, Yuan Chengwei,
The design and simulation [J] electronic letters, vol of equal research of high power helical array antenna fed from double-layered radial waveguide, 2005.12], later Chao Dynasty willow etc. is learned
Person has also been proposed probing into for combined radial direction linear array antenna, that is, utilizes the radial linear array antenna submatrix of multiple rectangles sealing
It is combined, to form larger array antenna system, and then achievees the purpose that realize high-gain, horse is farsighted to wait scholars complete in turn
Antenna increasing is optimized by increasing the number of unit in single radial line submatrix at the innovative research of S-band Unit 64
Benefit improves polarization, the matching performance of array, reduces the power division network insertion loss of factor matrix cascade and introducing, but also goes out
The case where being unevenly distributed in radial waveguide caused by being increased by number of unit is showed, therefore adjustable novel using coupling ability
Coupling probe realizes that [Ma Rui, Liu Qing think that Li Xiangqiang opens strong vault, fourth for approximate constant amplitude output of the feeding network under centre frequency
Design [J] the light laser of gorgeous peak .64 unit rectangle radial line feeding network and the particle beams, 2011.23 (11): 3131-3134].
There are the characteristics that many reasons such as uncertain and array layout difference, Zhao Weichen etc. to solve feed waveguide front-end architecture
People proposes and devises a kind of 132 unit rectangular grid helical array antennas of side feedback formula, is made of two 66 unit submatrixs,
Using the waveguiding structure of side feedback formula as feed waveguide, the feed structure of antenna is improved in such a way that side is presented, so that spiral
Array antenna can be applied to the increasingly complex application scenarios of feed front-end architecture [Zhao Weichen, Zhang Zhengquan, strong vault, Liu Qing think,
Design [J] the electronic component and material of the side Li Xiangqiang, the Liang Yuan feedback flat waveguide helical array antenna of formula compact, 2018,37
(06):78-82]。
In correlative study above-mentioned, the subarray configuration of array is round battle array or square array structure, this makes these arrays difficult
The group battle array of cylindrical conformal antennas is used for using the submatrix as conformal antenna；Simultaneously because existing most of helical array antennas are equal
It is fed using radial line, since the microwave of radial line is inputted by the big coaxial waveguide for being located at its lower plate center, so that its
It is difficult to adapt to densification requirement of the conformal antenna for feed, these restraining factors largely constrain helical array antenna
In the application of conformal field of array antennas.
Utility model content
For above-mentioned deficiency in the prior art, a kind of 80 unit long-line array spiral battle array of Ku wave band provided by the utility model
Array antenna solves the problems, such as the densification of conformal antenna.
In order to achieve the above object of the invention, the technical solution adopted in the utility model are as follows:
There is provided a kind of 80 unit long-line array helical array antenna of Ku wave band comprising rectangular waveguide, one end of rectangular waveguide
It is set as feed-in mouth, the other end is provided with coaxial coupling unit；Coaxial output unit is provided on rectangular waveguide, coaxial output is single
At least 80 coupling probes are provided in member, the lower end of each coupling probe is embedded in the wall of rectangular waveguide；Coaxial output is single
The upper surface of member is provided at least 80 helical antennas；Coaxial coupling unit is connected with coaxial output unit.
Further, the cross sectional dimensions of rectangular waveguide is 13.6*9mm, and the length of rectangular waveguide is 1256.4mm.
Further, coaxial output unit includes that the output that is laid on rectangular waveguide is coaxial, output coaxially with spiral day
Line is connected；Exporting coaxial outer diameter is 3.5mm, internal diameter 1mm, is highly 20.05mm.
Further, coupling probe includes adding ring probe and Jia Tai probe；First adds ring probe at a distance from feed-in mouth
For 18mm；Add platform probe that the latter half of rectangular waveguide is set；Spacing between adjacent coupled probe is 15.6mm.
Further, platform probe is added to include probe and the cylinder that probe lower end is set, the bottom of cylinder and rectangular waveguide
Lower plate be connected；Adding ring probe includes the probe that radius is 1mm and the coupling ring that outer diameter is 3.5mm；Coupling ring is set in spy
On needle and it is set in coaxial output unit.
Further, coaxial coupling unit includes coaxial converter, and coaxial converter is arranged apart from rectangular waveguide end
The center of sealing part 6mm.
Further, coaxial converter includes rectangle platform, and the front end of rectangle platform is provided with inclined-plane, and the upper surface of rectangle platform is set
It is equipped with rotary table；The height of rectangle platform is 7mm, a length of 12mm, width 13.6mm；The front height on inclined-plane is 2.42mm, and length is
16.26mm, width 13.6mm；The bottom radius surface of rotary table is 4.91mm, and it is highly 2.4mm that upper bottom surface radius, which is 1mm,.
Further, the conductor radius of helical antenna is 1mm, conductor radius 3.26mm, spiral number of turns 0.906, spiral shell
Elongation is 6.5deg, and knee height is 1.44mm.
The utility model has the following beneficial effects:
1, the utility model is made of 80 element antennas, can using coupling amount using rectangular waveguide as feed structure
The novel plus ring probe and arrangement adjusted extract energy out of rectangular waveguide, pass through the coaxial coupling unit of rectangular waveguide end
Making full use of for energy is realized, to evenly distributing the electromagnetic energy exported in high-power microwave source to each helical antenna
In.
2, the utility model has been put forward for the first time to adapt to this application scenarios of Cylindrical Conformal using from one section of array and adopt
It uses rectangular waveguide as feed waveguide, original square matrix and circle battle array structure is replaced using long-line array structure, so that it can be used for
Further form the conformal array of curved surface.Meanwhile the characteristics of being fed according to Waveguide array, using new probe arrangement mode and newly
Type adds ring probe as main probe feed form, and large range of coupling can be realized in the case where field strength changes greatly
Resultant is adjusted, and structure is relatively simple, influences smaller caused by the transmission rectangular waveguide inside electromagnetic wave, and probe does not easily cause
The concentration of field strength can adequately ensure that system has biggish power capacity.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the stereoscopic schematic diagram of the utility model；
Fig. 3 is the structural schematic diagram for adding ring probe；
Fig. 4 is the structural schematic diagram for adding platform probe；
Fig. 5 is the side sectional view of coaxial converter；
Fig. 6 is the structural schematic diagram of helical antenna.
Wherein: 1, feed-in mouth；2, rectangular waveguide；3, coupling probe；4, coaxial coupling unit；5, coaxial output unit；6,
Helical antenna；7, coupling ring；8, cylinder；9, rectangle platform；10, inclined-plane；11, rotary table；
Specific embodiment
Specific embodiment of the present utility model is described below, in order to facilitate understanding by those skilled in the art
The utility model, it should be apparent that the utility model is not limited to the range of specific embodiment, to the common skill of the art
For art personnel, if various change the attached claims limit and determine the utility model spirit and scope in,
These variations are it will be apparent that all utilize the innovation and creation of the utility model design in the column of protection.
As depicted in figs. 1 and 2, which includes rectangular waveguide 2, rectangular wave
The one end for leading 2 is set as feed-in mouth 1, and the other end is provided with coaxial coupling unit 4；It is single that coaxial output is provided on rectangular waveguide 2
Member 5 is provided at least 80 coupling probes 3 in coaxial output unit 5, and the lower end of each coupling probe 3 is embedded in rectangular waveguide 2
Wall in；The upper surface of coaxial output unit 5 is provided at least 80 helical antennas 6；Coaxial coupling unit 4 and coaxial output are single
Member 5 is connected.
The cross sectional dimensions of rectangular waveguide 2 is 13.6*9mm, and the length of rectangular waveguide 2 is 1256.4mm.Coaxial output is single
Member 5 is coaxial including the output being laid on rectangular waveguide 2, and output is coaxially connected with helical antenna 6；Export coaxial outer diameter
It is highly 20.05mm for 3.5mm, internal diameter 1mm.
As shown in Figure 3 and Figure 4, coupling probe 3 includes adding ring probe and Jia Tai probe；First adds ring probe and feed-in mouth
1 distance is 18mm；Add platform probe that the latter half of rectangular waveguide 2 is set；Spacing between adjacent coupled probe 3 is
15.6mm.Platform probe is added to include probe and the cylinder 8 that probe lower end is set, the bottom of cylinder 8 and the lower plate of rectangular waveguide 2
It is connected；Adding ring probe includes the probe that radius is 1mm and the coupling ring 7 that outer diameter is 3.5mm；Coupling ring 7 be set on probe and
It is set in coaxial output unit 5.
Coaxial coupling unit 4 includes coaxial converter, and coaxial converter is arranged at 2 end seal of rectangular waveguide
The center of 6mm.As shown in figure 5, coaxial converter includes rectangle platform 9, the front end of rectangle platform 9 is provided with inclined-plane 10, rectangle
The upper surface of platform 9 is provided with rotary table 11；The height of rectangle platform is 7mm, a length of 12mm, width 13.6mm；The front end on inclined-plane 10 is high
Degree is 2.42mm, length 16.26mm, width 13.6mm；The bottom radius surface of rotary table 11 is 4.91mm, and upper bottom surface radius is
1mm is highly 2.4mm.
As shown in fig. 6, the conductor radius of helical antenna 6 be 1mm, conductor radius 3.26mm, spiral number of turns 0.906,
The angle of pitch is 6.5deg, and knee height is 1.44mm.
In one embodiment of the utility model, this antenna is 1.01 in center frequency point 12.5GHz array standing-wave ratio,
Reflection coefficient is -47.69dB, is less than -29dB in entire frequency band 12GHz~13GHz reflection coefficient, is inside the feed system
Vacuum environment, taking electric field breakdown threshold value is 91.3MV/m, then the power capacity of the feed system is 243MW.Antenna array axial direction spoke
Gain reaches 26.1dB when penetrating, and axis ratio is 0.65dB, three dB bandwidth 0.4deg, minor level -16.3dB.
This antenna at work, after microwave is by 1 feed-in of feed-in mouth, the main propagation TE10 mould in rectangular waveguide 2, therefore
Intermediate field is powerful, and two sides field strength is small, and field strength is distributed and uneven in rectangular waveguide 2, at this time if probe is put in rectangular wave
It leads and is fed among 2, then the coupling amount that will lead to probe is excessive, while generating and greatly reflecting, therefore in the setting of probe
In the process, it needs for probe to be embedded in wave guide wall setting and enables most electromagnetic energy to reduce the reflection of probe generation
It is enough normally to transmit backward.By adjust coupling ring 7 internal diameter and cylinder 8 the realization of the parameters such as radius, height to coupling amount into
Row is appropriate to be adjusted, to realize the constant amplitude output of each unit.The dump energy of 2 internal probe of rectangular waveguide coupling passes through in rectangular wave
It leads 2 ends to add at coaxial coupling unit 4 to the most end end unit of array antenna, realizes the abundant benefit of 2 self-energy of rectangular waveguide
With so that it is guaranteed that antenna has higher efficiency while avoiding reflected electromagnetic energy pair at 2 end seal of rectangular waveguide
Array internal probe has an impact, and influences antenna overall performance.6 each unit structure of helical antenna is identical, helical antenna 6 it is initial
Phase is arranged by reversely rotating corresponding output end port transmission phase, can realize the cophase detector of all helical antennas 6, this
When can realize the axial radiation of array, rotation appropriate is carried out to helical antenna 6, angle a certain in space can be swept
It retouches.
In conclusion the utility model is made of 80 element antennas, feed structure is used as using rectangular waveguide 2, is used
Coupling amount is adjustable to add ring probe (electromagnetic coupling probe) and arrangement to extract energy out of rectangular waveguide 2, passes through rectangular wave
The coaxial coupling unit 4 for leading 2 ends realizes making full use of for energy, so that the electromagnetic energy exported in high-power microwave source is equal
Even distribution is into each helical antenna 6.The utility model has been put forward for the first time to adapt to this application scenarios of Cylindrical Conformal and use
Feed waveguide is used as using rectangular waveguide 2 from one section of array, original square matrix and circle battle array knot are replaced using long-line array structure
Structure, so that it can be used for further forming the conformal array of curved surface.Meanwhile the characteristics of being fed according to Waveguide array, using new spy
Needle arrangement mode and novel electromagnetic coupling probe, can be in the feelings that field strength changes greatly as main probe feed form
Realize that large range of coupling amount is adjusted under condition, structure is relatively simple, the shadow caused by the transmission of 2 inside electromagnetic wave of rectangular waveguide
Sound is smaller, and probe does not easily cause the concentration of field strength, can adequately ensure that system has biggish power capacity.
Claims (8)
1. a kind of 80 unit long-line array helical array antenna of Ku wave band, it is characterised in that: including rectangular waveguide (2), the rectangle
One end of waveguide (2) is set as feed-in mouth (1), and the other end is provided with coaxial coupling unit (4)；It is set on the rectangular waveguide (2)
It is equipped with coaxial output unit (5), is provided at least 80 coupling probes (3), each coupling in the coaxial output unit (5)
The lower end for closing probe (3) is embedded in the wall of the rectangular waveguide (2)；The upper surface of the coaxial output unit (5) is provided with
At least 80 helical antennas (6)；The coaxial coupling unit (4) is connected with coaxial output unit (5).
2. 80 unit long-line array helical array antenna of Ku wave band according to claim 1, it is characterised in that: the rectangular wave
The cross sectional dimensions for leading (2) is 13.6*9mm, and the length of the rectangular waveguide (2) is 1256.4mm.
3. 80 unit long-line array helical array antenna of Ku wave band according to claim 1, it is characterised in that: described coaxial defeated
Unit (5) is coaxial including the output being laid on rectangular waveguide (2) out, and the output is coaxially connected with helical antenna (6)；Institute
Stating and exporting coaxial outer diameter is 3.5mm, internal diameter 1mm, is highly 20.05mm.
4. 80 unit long-line array helical array antenna of Ku wave band according to claim 1, it is characterised in that: the coupling is visited
Needle (3) includes adding ring probe and Jia Tai probe；Described in first plus ring probe is 18mm at a distance from feed-in mouth (1)；It is described to add
The latter half in rectangular waveguide (2) is arranged in platform probe；Spacing between adjacent coupled probe (3) is 15.6mm.
5. 80 unit long-line array helical array antenna of Ku wave band according to claim 4, it is characterised in that: described plus platform is visited
Needle includes probe and the cylinder (8) that probe lower end is arranged in, the bottom of the cylinder (8) and the lower plate phase of rectangular waveguide (2)
Even；Described plus ring probe includes the probe that radius is 1mm and the coupling ring (7) that outer diameter is 3.5mm；The coupling ring (7) is arranged
On probe and it is set in coaxial output unit (5).
6. 80 unit long-line array helical array antenna of Ku wave band according to claim 1, it is characterised in that: the coaxial coupling
Closing unit (4) includes coaxial converter, and coaxial converter setting is at rectangular waveguide (2) end seal in 6mm
Heart position.
7. 80 unit long-line array helical array antenna of Ku wave band according to claim 6, it is characterised in that: described coaxial turn
Parallel operation includes rectangle platform (9), and the front end of the rectangle platform (9) is provided with inclined-plane (10), the upper surface setting of the rectangle platform (9)
There are rotary table (11)；The height of the rectangle platform (9) is 7mm, a length of 12mm, width 13.6mm；The front height on the inclined-plane is
2.42mm, length 16.26mm, width 13.6mm；The bottom radius surface of the rotary table is 4.91mm, and upper bottom surface radius is
1mm is highly 2.4mm.
8. 80 unit long-line array helical array antenna of Ku wave band according to claim 1, it is characterised in that: the spiral day
The conductor radius of line (6) is 1mm, conductor radius 3.26mm, spiral number of turns 0.906, angle of pitch 6.5deg, knee height
Degree is 1.44mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920432758.0U CN209344325U (en) | 2019-04-01 | 2019-04-01 | 80 unit long-line array helical array antenna of Ku wave band |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920432758.0U CN209344325U (en) | 2019-04-01 | 2019-04-01 | 80 unit long-line array helical array antenna of Ku wave band |
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| Publication Number | Publication Date |
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| CN209344325U true CN209344325U (en) | 2019-09-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109818159A (en) * | 2019-04-01 | 2019-05-28 | 西南交通大学 | 80 unit long-line array helical array antenna of Ku wave band |
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2019
- 2019-04-01 CN CN201920432758.0U patent/CN209344325U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109818159A (en) * | 2019-04-01 | 2019-05-28 | 西南交通大学 | 80 unit long-line array helical array antenna of Ku wave band |
| CN109818159B (en) * | 2019-04-01 | 2023-12-19 | 西南交通大学 | Ku wave band 80 unit long linear array spiral array antenna |
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