CN207910058U - A kind of two-sided antisymmetry structure dipole element of the inverted V-shaped of deformation is airborne to defend exceedingly high line - Google Patents
A kind of two-sided antisymmetry structure dipole element of the inverted V-shaped of deformation is airborne to defend exceedingly high line Download PDFInfo
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- CN207910058U CN207910058U CN201820281857.9U CN201820281857U CN207910058U CN 207910058 U CN207910058 U CN 207910058U CN 201820281857 U CN201820281857 U CN 201820281857U CN 207910058 U CN207910058 U CN 207910058U
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Abstract
Exceedingly high line is defended the utility model proposes a kind of reverse V-shaped two-sided antisymmetry structure dipole element of deformation is airborne, based on the basis of dipole antenna theory, the intact part that collateral radiation minor matters together constitute antenna is loaded by deforming reverse V-shaped two-sided antisymmetry primary radiation minor matters, feeder line minor matters and top.The utility model realizes the airborne requirement for defending exceedingly high line to standing wave, directional diagram and bandwidth under the premise of set appearance and size.
Description
Technical field
The utility model is related to a kind of two-sided antisymmetry structure level polarized dipole and electrical oscillator of inverted V-shaped of deformation it is airborne defend it is exceedingly high
Line belongs to microwave and radio-frequency antenna technical field.
Background technology
The wireless communication means of all be unable to do without antenna, because antenna is outlet in Radio-Frequency Wireless Communication system and enters
Mouthful, it is the conversion intermediary between spatial electromagnetic signal and guided wave equipment, the quality of antenna performance directly affects entire communication system
Quality.
Due to the particularity of airborne antenna application conditions, shape and size to antenna propose further requirement.
To adapt to in-flight aerodynamic requirement, low air drag (mainly form drag) is obtained, it is desirable that airborne antenna is suitable
Carrier structure is met the tendency of, antenna needs the streamlined structure for having certain.
Therefore under set shape and size condition, design it is a kind of meet electricity function index requirement it is airborne defend it is logical
Antenna has certain difficulty.Especially under conditions of needing broadband, horizontal polarization, the difficulty with bigger.
Utility model content
The purpose of this utility model is that：Overcome the shortcomings of that existing dipole antenna etc. is installed in bandwidth, structure, to flying
Row device proposes a kind of two-sided opposition of the inverted V-shaped that can meet electricity function index under conditions of being required to antenna shapes, size
The airborne horizontal polarization of structure dipole element is claimed to defend exceedingly high line.
The technical solution adopted in the utility model is：
A kind of two-sided airborne horizontal polarization of antisymmetry structure dipole element of the inverted V-shaped of deformation defends exceedingly high line, in micro-strip substrate
Front and back etch identical antenna pattern, the antenna pattern of micro-strip substrate back-etching is front etching antenna pattern rotation
Turn the configuration after 180 °；Antenna pattern per one side etching include impedance transformation feeder line minor matters, the first micro-strip dipole element and
Top micro-strip dipole element；
First micro-strip dipole element includes the first primary radiation minor matters and the second primary radiation minor matters, the first primary radiation minor matters and the
Two primary radiation minor matters are in inverted V-shaped structure, identical as the impedance transformation angle of feeder line minor matters, and the first primary radiation minor matters are converted with impedance
Feeder line minor matters connect, and junction is provided with multiple through-holes for being electrically connected with micro-strip substrate another side respective antenna structure,
Second primary radiation minor matters and impedance transformation feeder line minor matters are not connected to, only by be arranged the through-hole in the second primary radiation minor matters with it is micro-
Belt substrate another side respective antenna structure is electrically connected；Top micro-strip dipole element and impedance transformation feeder line minor matters, the first micro-strip are even
Pole oscillator is not connected to.
First primary radiation minor matters and the second primary radiation minor matters are located at the both sides of impedance transformation feeder line minor matters and the second master
The length for radiating minor matters is less than the first primary radiation minor matters.
The angle of first primary radiation minor matters and the second primary radiation minor matters and vertical direction feeder line minor matters is 20 °.
The length of first primary radiation minor matters horizontal direction is 71.8 ± 0.5mm, and vertical-direction length is 215.8 ± 1mm；The
The length of two primary radiation minor matters horizontal directions is 61.7 ± 0.5mm, and vertical-direction length is 188.8 ± 1mm.
The top micro-strip dipole element includes horizontal direction minor matters, the first collateral radiation minor matters and the second collateral radiation branch
Section；Top micro-strip dipole element is symmetrical about impedance transformation feeder line minor matters, and the first collateral radiation minor matters are flat with the first primary radiation minor matters
Row, the second collateral radiation minor matters are parallel with the second primary radiation minor matters.
It is mutually perpendicular between horizontal direction minor matters and impedance transformation feeder line minor matters.
The feeder line minor matters include the first minor matters of 4 sections of different characteristics impedances, the second minor matters, third minor matters and the 4th
Section.
First minor matters 8 ± 0.1mm of width, 8 ± 1mm of length；Second minor matters 1 ± 0.1mm of width, 83 ± 1mm of length；Third
Minor matters 2.4 ± 0.1mm of width, 107 ± 1mm of length；4th minor matters 8 ± 0.1mm of width, 30 ± 1mm of length.
Horizontal direction minor matters are 2 ± 0.1mm, horizontal direction minor matters 5 ± 0.1mm of width, length 84 with feeder line minor matters spacing
±1mm；The junction of first collateral radiation minor matters and horizontal direction minor matters apart from horizontal direction minor matters close on end be 19.5 ±
0.2mm, the first collateral radiation minor matters 6.9 ± 0.1mm of width, 125.5 ± 1mm of length.
The micro-strip substrate use 4mm is thick, relative dielectric constant for 2.65 double-side copper-applying ptfe substrate.
The utility model has an advantageous effect in that compared with prior art：
(1) the utility model proposes antenna structure it is simple, using printed board printing technology, consistency is good, be suitble to batch
Metaplasia is produced.Antenna size is small and exquisite, frivolous, meets the aerodynamic characteristic of airborne antenna needs, using vertical structure, is suitable for airborne peace
Dress.
(2) the utility model uses two-sided structure, increases the equivalent thickness of antenna, is conducive to the broadening of the beamwidth of antenna.
(3) in the utility model, angle is 20 ° between aerial radiation minor matter and feeder line, has both met antenna horizontal polarization
Requirement, and substantially reduce the lateral dimension of general dipole antenna, meet aircraft to aerodynamic demands such as antennas, meet
Structure snd size requirement to airborne antenna.
(4) the utility model adds top micro-strip dipole element structure, has effectively expanded the bandwidth of antenna.
Description of the drawings
Fig. 1 is the utility model antenna structure view；
Fig. 2 is V-arrangement symmetrical dipole schematic diagram；
Fig. 3 is antenna radiation pattern.
Specific implementation mode
The utility model is further described with implementation below in conjunction with the accompanying drawings.
The basic principle of the utility model is based on linear type dipole antenna, due to the requirement of airborne antenna size, uses V-type
Dipole antenna.Its basic structure is as shown in Figure 2.The brachium of V-arrangement doublet antenna is generally l/ λ>0.5, suitable of selection
2 θ of angle0, it is possible to obtain greatest irradiation on the angular bisector of the subtended angle folded by two-arm.The direction of V-arrangement doublet antenna at this time
Property coefficient is
D=120f (β l, θ0)Rrsin2θ0
In formula, RrIt is reduction in the radiation resistance of oscillator current loop value.
F (β l, θ0)=
1+cos2βl+sin2βlcos2θ0-2cosβl*cos(βlcosθ0)-2cosθ0sinβlsin(βlcosθ0)
As can be seen from the above equation, the V-arrangement doublet antenna of different brachiums about there are one maximum directivity factor and its
Corresponding subtended angle.When frequency determines, brachium is longer, and maximum directivity coefficient is bigger.And horizontal pole is required in the utility model
It is gain index within the scope of 0 °, ± 60 ° to change, meet with zenith, this just needs to adjust brachium by emulation, obtains suitable antenna
Gain.
The input impedance of V-arrangement doublet antenna is low, the general input impedance than the straight line doublet antenna with length
It is low.The input impedance calculating of V-arrangement doublet antenna and straight line symmetrical dipole are essentially identical, the difference is that average characteristics hinder
Resist and is
ZCA=120 (ln (2lsin θ0/α)-1)
The input impedance of V-arrangement doublet antenna is low, therefore the utility model adds impedance transformation feeder line minor matters.
The utility model realizes a horizontal polarization, is within the scope of 0 °, ± 60 ° with zenith on the basis of this principle
Gain defends exceedingly high line more than the airborne of -3dBi, and voltage standing wave ratio of the antenna in working frequency range is less than 2.
As shown in Figure 1, be based on above-mentioned requirements, the utility model proposes a kind of deformation the two-sided antisymmetry structure of inverted V-shaped
Dipole element is airborne to defend exceedingly high line, etches antisymmetric antenna pattern in the front and back of micro-strip substrate, i.e. micro-strip substrate is carried on the back
The antenna structure of face etching is that front etching antenna structure rotates the figure after 180 °；Include per the antenna pattern etched on one side
Impedance converts feeder line minor matters 20, the first micro-strip dipole element 21 and top micro-strip dipole element 22；
First micro-strip dipole element 21 includes the first primary radiation minor matters 211 and the second primary radiation minor matters 212, the first primary radiation
Minor matters 211 and the second primary radiation minor matters 212 are in inverted V-shaped structure, identical as the angle of impedance transformation feeder line minor matters 20, the first main spoke
Shoot section 211 and impedance transformation feeder line minor matters 20 connects, and junction be provided with it is multiple be used for it is corresponding with micro-strip substrate another side
The through-hole of antenna structure electrical connection, the second primary radiation minor matters 212 are not connected to impedance transformation feeder line minor matters 20, are only existed by setting
Through-hole in second primary radiation minor matters 212 is electrically connected with micro-strip substrate another side respective antenna structure；Top micro-strip dipole element
22 are not connected to impedance transformation feeder line minor matters 20, the first micro-strip dipole element 21.
First primary radiation minor matters 211 and the second primary radiation minor matters 212 are located at the both sides of impedance transformation feeder line minor matters 20
And second primary radiation minor matters 212 length be less than the first primary radiation minor matters 211.
Positive first primary radiation minor matters 211 pass through the second primary radiation minor matters 212 in through-hole and the antenna structure at the back side
Corresponding, positive second primary radiation minor matters 212 are right by the first primary radiation minor matters 211 in through-hole and the antenna structure at the back side
It answers.22 tow sides of top micro-strip dipole element be it is symmetrical, 20 tow sides of impedance transformation feeder line minor matters be it is symmetrical, in this way
Form the two-sided antisymmetry structure of 180 degree rotation.
The top micro-strip dipole element 22 includes horizontal direction minor matters 221, the first collateral radiation minor matters 222 and the second pair
Radiate minor matters 223；Top micro-strip dipole element 22 is symmetrical about impedance transformation feeder line minor matters 20, the first collateral radiation minor matters 222 with
First primary radiation minor matters 211 are parallel, and the second collateral radiation minor matters 223 are parallel with the second primary radiation minor matters 212.
Feeder line minor matters 20 include the first minor matters 201, the second minor matters 202,203 and of third minor matters of 4 sections of different characteristics impedances
4th minor matters 204.
In the present embodiment, the first primary radiation minor matters 211 and the second primary radiation minor matters 212 and vertical direction feeder line minor matters 20
Angle is 20 °.The length of first primary radiation minor matters, 211 horizontal direction is 71.8 ± 0.5mm, vertical-direction length 215.8
±1mm；The length of second primary radiation minor matters, 212 horizontal direction is 61.7 ± 0.5mm, and vertical-direction length is 188.8 ± 1mm.
First minor matters 201 8 ± 0.1mm of width, 8 ± 1mm of length；Second minor matters, 202 1 ± 0.1mm of width, length 83 ±
1mm；Third minor matters 203 2.4 ± 0.1mm of width, 107 ± 1mm of length；4th minor matters, 204 8 ± 0.1mm of width, length 30 ±
1mm。
It is mutually perpendicular between horizontal direction minor matters 221 and impedance transformation feeder line minor matters 20.Horizontal direction minor matters 221 and feeder line
20 spacing of minor matters is 2 ± 0.1mm, horizontal direction minor matters 221 5 ± 0.1mm of width, 84 ± 1mm of length；First collateral radiation minor matters
222 with the junctions of horizontal direction minor matters 221 be 19.5 ± 0.2mm apart from the end of closing on of horizontal direction minor matters 221, and first is secondary
Radiate minor matters 222 6.9 ± 0.1mm of width, 125.5 ± 1mm of length.The micro-strip substrate use 4mm is thick, relative dielectric constant for
2.65 double-side copper-applying ptfe substrate.
Since the antenna belongs to balanced type antenna, balun balun need to be added in when feed.To ensure antenna
Standing wave requirement, match circuit is added before balun.
In the present embodiment, it is contemplated that the requirement of antenna size and bandwidth uses lamped element balun match circuit.
The directional diagram of the antenna is seen by taking frequency 351MHz as an example in Fig. 3, it can be seen from the figure that, 0 ° of side of the antenna zenith
It is more than 0dB to gain, ± 60 ° of directive gains fully meet index request also in -1dB or so.
Claims (10)
1. a kind of two-sided antisymmetry structure dipole element of the inverted V-shaped of deformation is airborne to defend exceedingly high line, it is characterised in that：It is included in micro-strip
The antisymmetry figure of the front and back etching of substrate, the i.e. antenna pattern of micro-strip substrate back-etching are front etching antenna diagram
Shape rotates the configuration after 180 °；Antenna structure per one side etching is even including impedance transformation feeder line minor matters (20), the first micro-strip
Pole oscillator (21) and top micro-strip dipole element (22)；
First micro-strip dipole element (21) includes the first primary radiation minor matters (211) and the second primary radiation minor matters (212), the first main spoke
Shoot section (211) and the second primary radiation minor matters (212) are in inverted V-shaped structure, identical as the angle of impedance transformation feeder line minor matters (20),
First primary radiation minor matters (211) are connect with impedance transformation feeder line minor matters (20), and junction is provided with multiple be used for and micro-strip base
The through-hole of plate another side respective antenna structure electrical connection, the second primary radiation minor matters (212) convert feeder line minor matters (20) no with impedance
Connection is only electrically connected by the through-hole being arranged in the second primary radiation minor matters (212) with micro-strip substrate another side respective antenna structure
It connects；Top micro-strip dipole element (22) is not connected to impedance transformation feeder line minor matters (20), the first micro-strip dipole element (21).
2. a kind of two-sided antisymmetry structure dipole element of the inverted V-shaped of deformation according to claim 1 is airborne to defend exceedingly high line,
It is characterized in that：First primary radiation minor matters (211) and the second primary radiation minor matters (212) are located at impedance transformation feeder line minor matters (20)
Both sides and the second primary radiation minor matters (212) length be less than the first primary radiation minor matters (211).
3. a kind of two-sided antisymmetry structure dipole element of the inverted V-shaped of deformation according to claim 1 or 2 is airborne defend it is exceedingly high
Line, it is characterised in that：First primary radiation minor matters (211) and the second primary radiation minor matters (212) and vertical direction feeder line minor matters (20)
Angle be 20 °.
4. a kind of two-sided antisymmetry structure dipole element of the inverted V-shaped of deformation according to claim 1 or 2 is airborne defend it is exceedingly high
Line, it is characterised in that：The length of first primary radiation minor matters (211) horizontal direction is 71.8 ± 0.5mm, and vertical-direction length is
215.8±1mm；The length of second primary radiation minor matters (212) horizontal direction is 61.7 ± 0.5mm, vertical-direction length 188.8
±1mm。
5. a kind of two-sided antisymmetry structure dipole element of the inverted V-shaped of deformation according to claim 1 is airborne to defend exceedingly high line,
It is characterized in that：The top micro-strip dipole element (22) include horizontal direction minor matters (221), the first collateral radiation minor matters (222) with
And the second collateral radiation minor matters (223)；Symmetrically about impedance transformation feeder line minor matters (20), first is secondary for top micro-strip dipole element (22)
It is parallel with first primary radiation minor matters (211) to radiate minor matters (222), the second collateral radiation minor matters (223) and the second primary radiation minor matters
(212) parallel.
6. a kind of two-sided antisymmetry structure dipole element of the inverted V-shaped of deformation according to claim 5 is airborne to defend exceedingly high line,
It is characterized in that：It is mutually perpendicular between horizontal direction minor matters (221) and impedance transformation feeder line minor matters (20).
7. a kind of two-sided antisymmetry structure dipole element of the inverted V-shaped of deformation according to claim 1 is airborne to defend exceedingly high line,
It is characterized in that：The feeder line minor matters (20) include the first minor matters (201) of 4 sections of sequentially connected different characteristics impedances, second
Save (202), third minor matters (203) and the 4th minor matters (204).
8. a kind of two-sided antisymmetry structure dipole element of the inverted V-shaped of deformation according to claim 7 is airborne to defend exceedingly high line,
It is characterized in that：First minor matters (201) 8 ± 0.1mm of width, 8 ± 1mm of length；Second minor matters (202) 1 ± 0.1mm of width, length
83±1mm；Third minor matters (203) 2.4 ± 0.1mm of width, 107 ± 1mm of length；4th minor matters (204) 8 ± 0.1mm of width, it is long
Spend 30 ± 1mm.
9. a kind of two-sided antisymmetry structure dipole element of the inverted V-shaped of deformation according to claim 5 is airborne to defend exceedingly high line,
It is characterized in that：Horizontal direction minor matters (221) are 2 ± 0.1mm, horizontal direction minor matters (221) width 5 with feeder line minor matters (20) spacing
± 0.1mm, 84 ± 1mm of length；The junction distance level side of first collateral radiation minor matters (222) and horizontal direction minor matters (221)
It is 19.5 ± 0.2mm, first collateral radiation minor matters (222) 6.9 ± 0.1mm of width, length to the end of closing on of minor matters (221)
125.5±1mm。
10. a kind of two-sided antisymmetry structure dipole element of the inverted V-shaped of deformation according to claim 1 is airborne to defend exceedingly high line,
It is characterized in that：The micro-strip substrate use 4mm is thick, relative dielectric constant for 2.65 double-side copper-applying ptfe substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820281857.9U CN207910058U (en) | 2018-02-28 | 2018-02-28 | A kind of two-sided antisymmetry structure dipole element of the inverted V-shaped of deformation is airborne to defend exceedingly high line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820281857.9U CN207910058U (en) | 2018-02-28 | 2018-02-28 | A kind of two-sided antisymmetry structure dipole element of the inverted V-shaped of deformation is airborne to defend exceedingly high line |
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| Publication Number | Publication Date |
|---|---|
| CN207910058U true CN207910058U (en) | 2018-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820281857.9U Active CN207910058U (en) | 2018-02-28 | 2018-02-28 | A kind of two-sided antisymmetry structure dipole element of the inverted V-shaped of deformation is airborne to defend exceedingly high line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511894A (en) * | 2018-02-28 | 2018-09-07 | 中国人民解放军空军研究院航空兵研究所 | A kind of two-sided antisymmetry structure dipole element of the inverted V-shaped of deformation is airborne to defend exceedingly high line |
-
2018
- 2018-02-28 CN CN201820281857.9U patent/CN207910058U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511894A (en) * | 2018-02-28 | 2018-09-07 | 中国人民解放军空军研究院航空兵研究所 | A kind of two-sided antisymmetry structure dipole element of the inverted V-shaped of deformation is airborne to defend exceedingly high line |
| CN108511894B (en) * | 2018-02-28 | 2024-01-05 | 中国人民解放军空军研究院航空兵研究所 | Deformable inverted-V-shaped dipole oscillator airborne defensive antenna with double-sided antisymmetric structure |
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