CN208299024U - A kind of three frequency dual-polarization omnidirectional antenna of high-isolation - Google Patents
A kind of three frequency dual-polarization omnidirectional antenna of high-isolation Download PDFInfo
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- CN208299024U CN208299024U CN201820520256.9U CN201820520256U CN208299024U CN 208299024 U CN208299024 U CN 208299024U CN 201820520256 U CN201820520256 U CN 201820520256U CN 208299024 U CN208299024 U CN 208299024U
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- metal patch
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Abstract
The utility model discloses a kind of three frequency dual-polarization omnidirectional antennas of high-isolation, including antenna radiation unit, horizontal polarization feed element and vertical polarization feed element, the rectangle back chamber that the cuboid and three faces that antenna radiation unit is open by a bore face crack is constituted；Horizontal polarization feed element includes rectangular metal patch, gradual change form metal patch and L shape metal patch, and L shape metal patch and gradual change form metal patch are provided with the horizontal gap that two Length x Widths are equal；Vertical polarization feed element includes Liang Tiao branch Y shape metal patch different in size, three rectangular metal patches not of uniform size and L shape metal patch, the Liang Ge branch open circuit of Y shape metal patch, medium size rectangular metal patch, large size rectangular metal patch, L shape metal patch, small size rectangular metal successively end to end connection.This antenna radiator structure is simple and novel, domestic push-button aircraft flight frequency range can be completely covered, and have preferable horizontal vertical bipolar omni-directional coverage property.
Description
Technical field
The utility model relates to the antenna technical fields that push-button aircraft uses, and in particular to a kind of high-isolation three
Frequency dual-polarization omnidirectional antenna.
Background technique
With the progress of science and technology, wireless communication increasingly plays irreplaceable role, day in people's lives
Line is also developed rapidly as part essential in mobile communication.To meet emergency disaster relief, forest fire protection, environment prison
Survey, scientific research and testing etc., Ministry of Industry and Information is on March 10th, 2015 by 840.5-845MHz, 1430-1444MHz and 2408-2440MHz
Frequency range is divided into push-button aircraft system working frequency.Therefore research covers three frequency dual-polarization omnidirectional antennas of above-mentioned frequency range
Become it is extremely necessary with it is significant.
Dual polarized antenna is a kind of application of polarization diversity technique, it is to utilize two irrelevant polarization orthogonal electromagnetism
Signal obtains certain diversity gain, and compared with other diversity techniques, dual polarized antenna has number of antennas few, small in size
The advantages that.In addition to this, it in the case that dual polarized antenna can also keep equipment output power and bandwidth constant, effectively improves and is
The utilization rate of system capacity and radio spectrum resources.
Omnidirectional antenna refers to the antenna for having certain beam angle in 360 ° of homogeneous radiations of horizontal plane, vertical plane, Gu Qifa
The signal penetrated can be received by the receiving end of horizontal plane arbitrary orientation, while can receive the signal of horizontal plane all directions, wide
Broadcast the wireless communication fields extensive application such as TV, mobile communication base station, WLAN, satellite communication, high-speed aircraft.
It is fewer and fewer to the research of three frequency dual-polarization omnidirectional antennas at present in wireless communication associated antenna field.
Utility model content
Purpose of the utility model is to solve drawbacks described above in the prior art, and it is double to provide a kind of three frequency of high-isolation
Polarized omnidirectional antenna.
The purpose of this utility model can be reached by adopting the following technical scheme that:
A kind of three frequency dual-polarization omnidirectional antenna of high-isolation, including antenna radiation unit, horizontal polarization feed element and hang down
Straight polarization feed element, the rectangle that the cuboid and three faces that the antenna radiation unit is open by a bore face crack carry on the back chamber
It constitutes, the opening face of cuboid is mutually perpendicular to backwards with the cracked gap of rectangle back chamber cracked, and cuboid right side and rectangle are carried on the back
The left side of chamber is affixed, wherein the left side of rectangle back chamber is the one side of gap of not cracking.
The horizontal polarization feed element includes rectangular metal patch, gradual change form metal patch and the first L shape metal
Patch, the first L shape metal patch include long side rectangular surfaces and short side rectangular surfaces, one end of the long side rectangular surfaces with
One end orthogonal space of the short side rectangular surfaces connects, and the other end is then opened a way；The other end of the short side rectangular surfaces and institute
The one end for the gradual change form metal patch stated connects, and the other end and rectangular metal patch of the gradual change form metal patch connect
It connects, the other end open circuit of rectangular metal patch, the first L shape metal patch and the gradual change form metal patch are provided with
The equal horizontal gap of two equal lengths, width；
The vertical polarization feed element include Liang Tiao branch Y shape metal patch different in size, three it is not of uniform size
Rectangular metal patch and the 2nd L shape metal patch, the Liang Ge branch open circuit of the Y shape metal patch, the other end and medium size
Rectangular metal patch is connected, and the other end of medium size rectangular metal patch is connected with large size rectangular metal patch, large size rectangular metal
The other end of patch is connected with one end of the 2nd L shape metal patch, the other end of the 2nd L shape metal patch and small size rectangular metal
Patch, the other end open circuit of small size rectangular metal patch.The utility model antenna radiator structure is simple and novel, can be completely covered
Domestic push-button aircraft flight frequency range, and there is preferable horizontal vertical bipolar omni-directional coverage property.
The gradual change form metal patch is oval gradual change, round gradual change or parabolic grades.
Further, long side rectangular surfaces are parallel with the side of cuboid in the first L shape metal patch, the short side
Rectangular surfaces are parallel with the back side of cuboid, and the rectangular metal patch is parallel with the side of cuboid.
Further, two articles of horizontal joints on the first L shape metal patch and the gradual change form metal patch
Gap center line is symmetrical, slit width 0.6-1.2mm, and the sum of total length between the distance between two gaps and two gaps is 0.2 λL-
0.3λL, wherein λLFor antenna low-frequency range center resonant frequency fLCorresponding wavelength in free space.
Further, the gradual change form metal patch is close to one of short side rectangular surfaces in the first L shape metal patch
End center is the feeding point of horizontal feed element, and the trunk of the Y shape metal patch is vertical feedback with the point of intersection of two branches
The feeding point of electric unit, above-mentioned feeding point are connected with coaxial line respectively.
Further, the right side 3mm for the rectangle back chamber that the Y shape metal patch distance is cracked, the medium size square
The upper side 4mm for the rectangle back chamber that shape metal patch distance is cracked, the rectangle that the large size rectangular metal patch distance is cracked
The left side 2.7mm of chamber is carried on the back, the bottom surface 4mm for the rectangle back chamber that the 2nd L shape metal patch distance is cracked, the trumpet
The right side 8.7mm for the rectangle back chamber that rectangular metal patch distance is cracked.
Further, a length of 0.1 λ of the cuboidL-0.25λL, width is 0.05 λL-0.1λL, a height of 0.26 λL-
0.36λL；
A length of 0.1 λ of the rectangle back chamberL-0.2λL, width is 0.05 λL-0.15λL, a height of 0.25 λL-0.4λL,
In, λLFor antenna low-frequency range center resonant frequency fLCorresponding wavelength in free space.
Further, three faces of rectangle back chamber are provided with two gaps different in size, and short gap width is 5mm,
Short gap total length is 0.39 λM, long gap width is 5mm, and long gap total length is 0.31 λL, wherein λMFor the antenna intermediate frequency
Section center resonant frequency fMCorresponding wavelength in free space, λLFor antenna low-frequency range center resonant frequency fLIn freedom
Corresponding wavelength in space.
Further, branch's open circuit that two different in size in the Y shape metal patch gives long gap and short seam respectively
Gap feed, wherein the minor matters width to short gap feed is 0.01 λM-0.03λM, it is 0.01 to the minor matters width that long gap is fed
λL-0.03λL, wherein λMFor antenna Mid Frequency center resonant frequency fMCorresponding wavelength in free space, λLFor the antenna
Low-frequency range center resonant frequency fLCorresponding wavelength in free space.
The utility model compared with the existing technology have following advantages and effects
1) the utility model is made of two radiating elements, and horizontal polarization radiating element is the cuboid of bore face opening,
By bore face opening shape at omnidirectional radiation, vertical polarization radiating element is that rectangle carries on the back chamber, by being provided with two horizontal curved creases
Gap and vertical polarization feed element realize the polarization of three frequency vertical omnidirections, and the antenna structure is simple, is only made of metal, processing cost
It is low.
2) antenna structure is simple and novel, three frequency ranges of domestic push-button aircraft system can be completely covered, and each
Frequency range difference is controllable, and three frequency ranges can obtain good omnidirectional's performance, and the cross polarization at three frequency ranges is smaller.
3) isolation of the antenna is higher, and the polarization isolation in 840.5-845MHz frequency range is better than 40.5dB,
Polarization isolation in 1430-1444MHz frequency range is better than 42.6dB, and the polarization isolation in 2408-2440MHz frequency range is better than
34.8dB。
Detailed description of the invention
Fig. 1 is the perspective view of three frequency dual-polarization omnidirectional antenna of the utility model high-isolation；
Fig. 2 is the top view of three frequency dual-polarization omnidirectional antenna of the utility model high-isolation；
The perspective view of the three horizontal feed element of frequency dual-polarization omnidirectional antenna of Fig. 3 the utility model high-isolation；
The perspective view of the vertical feed element of three frequency dual-polarization omnidirectional antenna of Fig. 4 the utility model high-isolation；
Fig. 5 is the bandwidth of three frequency dual-polarization omnidirectional antenna of the utility model high-isolation；
Fig. 6 is XOY plane of the cuboid of the utility model antenna radiation unit medium caliber face opening at 842MHz
Antenna pattern；
Fig. 7 is XOY plane of the cuboid of the utility model antenna radiation unit medium caliber face opening at 1437MHz
Antenna pattern；
Fig. 8 is XOY plane of the cuboid of the utility model antenna radiation unit medium caliber face opening at 2425MHz
Antenna pattern；
Fig. 9 is the XOY plane that apertured rectangle back chamber is opened in the utility model antenna radiation unit at 842MHz
Antenna pattern；
Figure 10 is the XOY plane that apertured rectangle back chamber is opened in the utility model antenna radiation unit at 1437MHz
Antenna pattern；
Figure 11 is the XOY plane that apertured rectangle back chamber is opened in the utility model antenna radiation unit at 2425MHz
Antenna pattern；
Wherein, the reference numerals are as follows:
R--- antenna radiation unit, the horizontal feed element of HF---, the vertical feed element of VF---, the first L shape gold of HF1---
Belong to patch, HF2--- rectangular metal patch, HF3--- gradual change form metal patch, VF1---Y shape metal patch, VF2--- medium size
Rectangular metal patch, VF3--- large size rectangular metal patch, the 2nd L shape metal patch of VF4---, VF5--- trumpet rectangular metal
Patch.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
Embodiment
As Figure 1-Figure 4, a kind of three frequency dual-polarization omnidirectional antenna of high-isolation, including antenna radiation unit R, horizontal pole
Change feed element HF and vertical polarization feed element VF, the horizontal polarization feed element and vertical polarization feed element are distinguished
It is connected with 50 ohm coaxial line C.
Omnidirectional antenna is disposed vertically, wherein the cuboid that antenna radiation unit R is open by a bore face and the square to crack
Shape is carried on the back chamber and is constituted, and the plate of the antenna radiation unit R is copper sheet, with a thickness of 0.5mm.The horizontal polarization feed element
HF is located in cuboid, and is located at the middle position of cuboid vertical direction, and the vertical polarization feed element VF is put vertically
Set rectangle carry on the back it is intracavitary, the plate of two feed elements is copper sheet, and thickness is 0.3mm.
In the present embodiment, the cuboid of bore face opening realizes horizontal polarization, the long H1=0.33 λ in bore faceL, wide AB
=0.08 λL, cuboid depth is BD=0.16 λL.Horizontal polarization feed element HF includes rectangular metal patch HF2, gradual change form
Metal patch HF3 and the first L shape metal patch HF1, the first L shape metal patch include long side rectangular surfaces and short side rectangular surfaces, length
One end of side rectangular surfaces connects with one end orthogonal space of short side rectangular surfaces, and the other end of long side rectangular surfaces is then opened a way；Short side square
The other end in shape face connects with one end of gradual change form metal patch, and the other end and rectangular metal of gradual change form metal patch paste
One end of piece connects, the other end open circuit of rectangular metal patch, the first L shape metal patch and the gradual change form gold
Belong to patch and be provided with the horizontal gap that two width are 1mm, the length in the distance between the total length in two gaps and two gaps it
Be approximately 0.25 λL.Gradual change form metal patch HF3, specially oval gradual change, round gradual change or parabolic grades, this reality
The gradual change that elliptical form is used in example is applied, place transverse is 55.8mm, short axle 20mm, gradual change form metal patch width
For 33mm.One end that gradual change form metal patch HF3 is connected with the first L shape metal patch HF1 is apart from antenna radiation unit phase
The midpoint of junction 4.5mm is connected with 50 ohm coaxial line C.Wherein, λLFor antenna low-frequency range center resonant frequency fLIn freedom
Corresponding wavelength in space.
Rectangle back chamber carries on the back the long FG=0.15 λ of chamber for realizing vertical polarization, rectangle in the present embodimentL, wide GH=0.1 λL, high
H2=0.33 λL.Rectangle carries on the back chamber except in addition to cuboid abutted surface, other three faces are provided with gap, and opening two gap widths is W
=5mm, short gap total length are 0.39 λM, long gap total length is 0.31 λL.Wherein λLFor the antenna low-frequency range center resonance frequency
Rate fLCorresponding wavelength in free space, λMFor antenna Mid Frequency center resonant frequency fMIt is corresponding in free space
Wavelength.Vertical feed element VF includes Liang Tiao branch Y shape metal patch VF1 different in size, three large, medium and small different squares
(VF3 is large size rectangular metal patch, VF2 is medium size rectangular metal patch, VF5 is small size square by shape metal patch VF3, VF2, VF5
Shape metal patch) and the 2nd L shape metal patch VF4.
One end of Y shape metal patch VF1 is Liang Ge branch open circuit, one end of the other end and medium size rectangular metal patch VF2
It is connected, the other end of medium size rectangular metal patch VF2 is connected with one end of large size rectangular metal patch VF1, large size rectangular metal
The other end of patch VF1 is connected with one end of the 2nd L shape metal patch VF4, the other end of the 2nd L shape metal patch VF4 with it is small
One end of number rectangular metal patch VF5 is connected, the other end open circuit of small size rectangular metal patch VF5.Vertical polarization feed element
Middle VF1 carries on the back chamber left side apart from rectangle apart from rectangle back chamber upper surface 4mm, VF3 apart from rectangle back chamber right side 3mm, VF2
2.7mm, VF4 carry on the back chamber right side 8.7mm apart from rectangle apart from rectangle back bottom of chamber face 4mm, VF5.Y shape metal patch VF1 perpendicular to
Horizontal plane is placed, and two branches open a way, and is 4mm to branch's width that short gap is fed, and the trunk width fed to long gap is
8mm, intermediate minor matters are connected with 50 ohm coaxial line C.
The horizontal feed element and vertical feed element do not connect other than being connected with coaxial line with other objects
It connects.
As shown in figure 5, be the present embodiment emulation gained the beamwidth of antenna, thus figure it could be assumed that, the utility model height every
There is 835-846.9MHz, the bandwidth of 1426-1467MHz, 2335-2504MHz, in the band from three frequency dual-polarization omnidirectional antennas of degree
Return loss reaches -10dB on width, covers push-button aircraft system working frequency；And in the bandwidth, polarization every
From degree in 34.8dB or more, isolation is higher.Fig. 6-Figure 11 is that XOY of the present embodiment emulation gained antenna at different frequency is flat
Surface radiation directional diagram, it can be obtained from the figure that conclusion out, three frequency dual-polarization omnidirectional antenna of the utility model high-isolation has preferable level
Omnidirectional radiation characteristic.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiments of the present invention is not by above-mentioned
The limitation of embodiment, it is made under other any spiritual essence and principles without departing from the utility model to change, modify, replacing
In generation, simplifies combination, should be equivalent substitute mode, is included within the protection scope of the utility model.
Claims (9)
1. a kind of three frequency dual-polarization omnidirectional antenna of high-isolation, which is characterized in that the antenna includes antenna radiation unit, water
Mean pole feed element and vertical polarization feed element, cuboid that the antenna radiation unit is open by a bore face and
The rectangle back chamber that three faces are cracked is constituted, and the opening face of cuboid is mutually perpendicular to backwards with the cracked gap of rectangle back chamber cracked, long
Cube right side and the left side of rectangle back chamber are affixed, wherein the left side of rectangle back chamber is the one side of gap of not cracking；Described
Horizontal polarization feed element HF is located in cuboid, and is located at the middle position of cuboid vertical direction, the vertical polarization
It is intracavitary that feed element VF is placed on rectangle back vertically；The horizontal polarization feed element and the vertical polarization feed element
It is connected respectively with coaxial line；
The horizontal polarization feed element includes rectangular metal patch, gradual change form metal patch and the first L shape metal patch,
The first L shape metal patch includes long side rectangular surfaces and short side rectangular surfaces, one end of the long side rectangular surfaces with it is described
One end orthogonal spaces of short side rectangular surfaces connect, the other end of the long side rectangular surfaces is then opened a way；The short side rectangle
The other end in face connects with one end of the gradual change form metal patch, the other end of the gradual change form metal patch with
The described rectangular metal patch connection, the other end open circuit of the rectangular metal patch, the first L shape metal patch and
The gradual change form metal patch is provided with two equal horizontal gaps of equal length, width；
The vertical polarization feed element includes sequentially connected Y shape metal patch, medium size rectangular metal patch, large size rectangle
Metal patch, the 2nd L shape metal patch, small size rectangular metal patch, the Y shape metal patch includes two different in size
Branch's open circuit, one end of the small size rectangular metal patch are open circuit.
2. three frequency dual-polarization omnidirectional antenna of a kind of high-isolation according to claim 1, which is characterized in that the gradual change
Form metal patch is oval gradual change, round gradual change or parabolic grades.
3. three frequency dual-polarization omnidirectional antenna of a kind of high-isolation according to claim 1, which is characterized in that described first
Long side rectangular surfaces are parallel with the side of cuboid in L shape metal patch, and the short side rectangular surfaces are parallel with the back side of cuboid, institute
The rectangular metal patch stated is parallel with the side of cuboid.
4. three frequency dual-polarization omnidirectional antenna of a kind of high-isolation according to claim 1, which is characterized in that described first
Two horizontal gap center lines on L shape metal patch and the gradual change form metal patch are symmetrical, slit width 0.6-
1.2mm, the sum of total length between the distance between two gaps and two gaps are 0.2 λL-0.3λL, wherein λLFor the antenna low frequency
Section center resonant frequency fLCorresponding wavelength in free space.
5. three frequency dual-polarization omnidirectional antenna of a kind of high-isolation according to claim 1, which is characterized in that the gradual change
Form metal patch is the feed of horizontal feed element at one end center close to short side rectangular surfaces in the first L shape metal patch
Point, the trunk of the Y shape metal patch are the feeding point of vertical feed element, above-mentioned feeding point point with the point of intersection of two branches
It is not connected with coaxial line.
6. three frequency dual-polarization omnidirectional antenna of a kind of high-isolation according to claim 1, which is characterized in that the Y shape
The right side 3mm for the rectangle back chamber that metal patch distance is cracked, the rectangle back that the medium size rectangular metal patch distance is cracked
The upper side 4mm of chamber, the left side 2.7mm of rectangle that the large size rectangular metal patch distance is cracked back chamber, described the
The bottom surface 4mm for the rectangle back chamber that two L shape metal patch distances are cracked, the rectangle that the small size rectangular metal patch distance is cracked
Carry on the back the right side 8.7mm of chamber.
7. three frequency dual-polarization omnidirectional antenna of a kind of high-isolation according to claim 1, which is characterized in that described is rectangular
A length of 0.1 λ of bodyL-0.25λL, width is 0.05 λL-0.1λL, a height of 0.26 λL-0.36λL；
A length of 0.1 λ of the rectangle back chamberL-0.2λL, width is 0.05 λL-0.15λL, a height of 0.25 λL-0.4λL, wherein λLFor
Antenna low-frequency range center resonant frequency fLCorresponding wavelength in free space.
8. three frequency dual-polarization omnidirectional antenna of a kind of high-isolation according to claim 1, which is characterized in that the rectangle
Three faces of back chamber are provided with two gaps different in size, and short gap width is 5mm, and short gap total length is 0.39 λM, long gap
Width is 5mm, and long gap total length is 0.31 λL, wherein λMFor antenna Mid Frequency center resonant frequency fMIn free space
Corresponding wavelength, λLFor antenna low-frequency range center resonant frequency fLCorresponding wavelength in free space.
9. three frequency dual-polarization omnidirectional antenna of a kind of high-isolation according to claim 8, which is characterized in that the Y shape
Branch's open circuit that two different in size in metal patch is fed to long gap and short gap respectively, wherein is fed to short gap
Minor matters width is 0.01 λM-0.03λM, it is 0.01 λ to the minor matters width that long gap is fedL-0.03λL, wherein λMFor in the antenna
Frequency range center resonant frequency fMCorresponding wavelength in free space, λLFor antenna low-frequency range center resonant frequency fLCertainly
By wavelength corresponding in space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820520256.9U CN208299024U (en) | 2018-04-12 | 2018-04-12 | A kind of three frequency dual-polarization omnidirectional antenna of high-isolation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820520256.9U CN208299024U (en) | 2018-04-12 | 2018-04-12 | A kind of three frequency dual-polarization omnidirectional antenna of high-isolation |
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| Publication Number | Publication Date |
|---|---|
| CN208299024U true CN208299024U (en) | 2018-12-28 |
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ID=64725782
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820520256.9U Expired - Fee Related CN208299024U (en) | 2018-04-12 | 2018-04-12 | A kind of three frequency dual-polarization omnidirectional antenna of high-isolation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110707419A (en) * | 2019-08-17 | 2020-01-17 | 嘉兴诺艾迪通信科技有限公司 | Directional antenna for filling of zenith communication blind area and ground noise suppression |
-
2018
- 2018-04-12 CN CN201820520256.9U patent/CN208299024U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110707419A (en) * | 2019-08-17 | 2020-01-17 | 嘉兴诺艾迪通信科技有限公司 | Directional antenna for filling of zenith communication blind area and ground noise suppression |
| CN110707419B (en) * | 2019-08-17 | 2023-10-24 | 嘉兴诺艾迪通信科技有限公司 | Directional antenna for zenithal communication blind area filling and ground noise suppression |
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