CN207719411U - A kind of X-band circular polarised array antenna and marine radar - Google Patents
A kind of X-band circular polarised array antenna and marine radar Download PDFInfo
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- CN207719411U CN207719411U CN201820187755.0U CN201820187755U CN207719411U CN 207719411 U CN207719411 U CN 207719411U CN 201820187755 U CN201820187755 U CN 201820187755U CN 207719411 U CN207719411 U CN 207719411U
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- radiating element
- feeding network
- array antenna
- medium substrate
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Abstract
X-band circular polarised array antenna provided by the utility model, including medium substrate, it is set to the positive multiple radiating element patches of medium substrate, feeding network and the impedance transformer of connection radiating element patch and feeding network, the metal floor and input connector that are set to the medium substrate back side, input connector is connected by the distributing point of metal floor and medium substrate and feeding network；Wherein, radiating element patch is corner-fed mode, and radiating element patch, which interlocks, is placed in the both sides of feeding network.It can be seen that this antenna by corner-fed mode be radiating element patch for linear polarization array, can preferably meet circular polarisation performance, therefore, anti-interference ability is stronger.In addition, radiating element patch, which interlocks, is placed in the both sides of feeding network, it is smaller in lateral size for linear array antenna.In addition, the utility model also provides a kind of marine radar including the antenna, effect is as described above.
Description
Technical field
The utility model is related to radio frequency arts, more particularly to a kind of X-band circular polarised array antenna and ship thunder
It reaches.
Background technology
The application field of antenna is especially extensive, for example, being applied to marine radar.Marine radar effectively can avoid ship from touching
It hits, the loss for reducing life and property has very important effect.
The quality of important component of the antenna as radar, index directly affects the overall performance of radar.Traditional
Antenna structure in marine radar mostly uses Waveguide slot antenna, but Waveguide slot antenna size is larger, high processing costs.For
The ability of tracking to quick moving small target is improved, needs to further increase antenna rotation rate, but large-size antennae is not easy to realize
High rotating speed, therefore its application is limited.Based on the present situation, X-band system is because frequency range is high, then corresponding antenna structure has
Have that size is close, flexible for installation, the advantages such as mobility is good, therefore, marine radar antenna mostly uses X-band.
But current marine radar antenna is mostly horizontal polarization, anti-sea clutter ability is preferable, but anti-misty rain etc. is dry
It is poor to disturb ability.
In view of this, it is necessory to propose a kind of compact-sized, strong antijamming capability X-wave band autenna, it is existing to solve
Technology there are the problem of.
Utility model content
The purpose of this utility model is to provide a kind of X-band circular polarised array antenna, compact-sized, anti-interference ability
By force.In addition, the purpose of this utility model also provides a kind of marine radar including the antenna.
In order to solve the above technical problems, the utility model provides a kind of X-band circular polarised array antenna, including medium base
Plate is set to the positive multiple radiating element patches of medium substrate, feeding network and the connection radiating element patch and described
The impedance transformer of feeding network, the metal floor and input connector for being set to the medium substrate back side, the input connect
Device is connect to connect with the distributing point of the feeding network by the metal floor and the medium substrate；
Wherein, the radiating element patch is corner-fed mode, and the radiating element patch is staggeredly placed in the feeding network
Both sides.
Preferably, the impedance transformer is in winding type.
Preferably, the feeding network specifically includes multiple quarter wavelength impedance transducers, and multiple described four points
One of the stepped arrangement of wavelength impedance transformers, the wavelength of the impedance transformer be a quarter waveguide wavelength.
It is preferably located at the feeding network homonymy and the spacing between the adjacent two radiating element patches is
1 times of waveguide wavelength, the spacing positioned at the feeding network heteropleural and between the adjacent two radiating element patches is 0.5
Times waveguide wavelength.
Preferably, the feed amplitude of the feeding network uses Chebyshev's distribution mode.
Preferably, the distributing point is the central point of the feeding network.
Preferably, the outer conductor of the input connector is connect with the metal floor, is led in the input connector
Body is connect across the medium substrate with the distributing point.
Preferably, the radiating element patch is 20.
Preferably, the relative dielectric constant of the medium substrate is 2.2, loss angle tangent 0.0009, thickness 1mm.
In order to solve the above technical problems, the utility model also provides a kind of marine radar, including X-band described above circle
Polarization array antenna.
X-band circular polarised array antenna provided by the utility model, including medium substrate, be set to medium substrate front
Multiple radiating element patches, feeding network and connection radiating element patch and feeding network impedance transformer, be set to Jie
The metal floor and input connector of matter substrate back, input connector pass through metal floor and medium substrate and feeding network
Distributing point connects；Wherein, radiating element patch is corner-fed mode, and radiating element patch, which interlocks, is placed in the both sides of feeding network.By
This as it can be seen that this antenna by corner-fed mode be radiating element patch for linear polarization array, can preferably expire
Sufficient circular polarisation performance, therefore, anti-interference ability is stronger.In addition, radiating element patch, which interlocks, is placed in the both sides of feeding network, relatively
It is smaller in lateral size for linear array antenna.In conclusion not only interference performance is strong for this antenna, and it is compact-sized, it fits
For more application scenarios.
In addition, the utility model also provides a kind of marine radar including the antenna, effect is as described above.
Description of the drawings
In order to illustrate more clearly of the utility model embodiment, letter will be done to attached drawing needed in the embodiment below
Single introduction, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the utility model, general for this field
For logical technical staff, without creative efforts, other drawings may also be obtained based on these drawings.
Fig. 1 is a kind of vertical view for X-band circular polarised array antenna that the utility model embodiment provides；
Fig. 2 is a kind of partial side view for X-band circular polarised array antenna that the utility model embodiment provides；
Fig. 3 is a kind of reflectance factor simulation result diagram that the utility model embodiment provides；
Fig. 4 is a kind of antenna axial ratio simulation result diagram that the utility model embodiment provides；
Fig. 5 is that a kind of antenna for providing of the utility model embodiment horizontal plane at 9.4GHz frequencies normalizes directional pattern
Simulation result diagram；
Fig. 6 is that a kind of antenna for providing of the utility model embodiment vertical plane at 9.4GHz frequencies normalizes directional pattern
Simulation result diagram.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than all real
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art without making creative work, institute
The every other embodiment obtained, belongs to scope of protection of the utility model.
The core of the utility model is to provide a kind of X-band circular polarised array antenna, compact-sized, anti-interference ability
By force.In addition, the core of the utility model also provides a kind of marine radar including the antenna.
In order to make those skilled in the art more fully understand the utility model, below in conjunction with the accompanying drawings and it is embodied
The utility model is described in further detail for mode.
Fig. 1 is a kind of vertical view for X-band circular polarised array antenna that the utility model embodiment provides.Fig. 2 is this reality
With a kind of partial side view for X-band circular polarised array antenna that new embodiment provides.As illustrated in fig. 1 and 2, which includes
Medium substrate 1, being set to the positive multiple radiating element patches of medium substrate 12, (for illustrative clarity, Fig. 1 includes multiple radiation
Unit patch, but label only has been carried out to one of them), feeding network 3 and connection radiating element patch 2 and feeding network 3
Impedance transformer 4, the metal floor 5 and input connector 6 for being set to 1 back side of medium substrate, input connector 6 is by metal
Plate 5 and medium substrate 4 are connect with the distributing point of feeding network 3.Wherein, radiating element patch 2 is corner-fed mode, radiating element patch
Piece 2, which interlocks, is placed in the both sides of feeding network 3.
According to IEEE 521-2002 standards, X-band refers to radio waveband of the frequency in 8-12GHz, in electromagnetic spectrum
In belong to microwave.And in certain occasions, the frequency range of X-band is then 7-11.2GHz.For popular, the X in X-band is
" extended " in English indicates " extension " amplitude modulation broadcasting.
As a kind of specific embodiment, the relative dielectric constant of medium substrate 1 is 2.2, and loss angle tangent is
0.0009, thickness 1mm.Preferably, the material of medium substrate 1 can select F4B planks.
In specific implementation, the both sides of feeding network 3 are both provided with radiating element patch 2, compared to the knot of unilateral side setting
For structure, such set-up mode helps to reduce the lateral dimension of antenna.The quantity of radiating element patch 2 can be according to reality
Situation is arranged, and in Fig. 1, the quantity of radiating element patch 2 is 20, it is to be understood that 20 are a kind of concrete application field
Scape does not represent and there was only a kind of this embodiment.Under normal conditions, radiating element patch 2 is rectangle, by adjusting long side and short
The ratio on side realizes the performance of circular polarisation.In addition, since radiating element patch 2 uses corner-fed mode, circular polarisation performance is more
It is good, and anti-interference ability is stronger.As shown in Figure 1, one of radiating element patch 2 angle passes through impedance transformer 4 and feedback
Electric network 3 connects.The rotation direction orthogonality of circular polarized antenna, it is ensured that an aerial radiation left side (right side) hand circular polarization wave then only receives left
(right side) hand circular polarization wave is without receiving right (left side) hand circular polarization wave so that circular polarized antenna anti-interference ability is stronger.
Preferably embodiment, impedance transformer 4 are in winding type.As shown in Figure 1, impedance transformer 4 is with the song that wriggles
The form of folding is arranged, which can further reduce antenna in longitudinal size and reduction while reaching length requirement
The sidelobe level of vertical direction.It is understood that in Fig. 1, the overbending direction and bending number of impedance transformer 4 are one
The specific application scenarios of kind, can determines according to actual conditions, and the present embodiment is not construed as limiting.
Preferably embodiment, distributing point are the central point of feeding network 3.Specifically, the outer of input connector 6 is led
Body is connect with metal floor 5, and the inner wire of input connector 6 is connect across medium substrate 1 with distributing point.
X-band circular polarised array antenna provided in this embodiment, including medium substrate, to be set to medium substrate positive more
A radiating element patch, feeding network and the impedance transformer of connection radiating element patch and feeding network are set to medium base
The metal floor and input connector of back, the feed that input connector passes through metal floor and medium substrate and feeding network
Point connection；Wherein, radiating element patch is corner-fed mode, and radiating element patch, which interlocks, is placed in the both sides of feeding network.Thus may be used
See, this antenna by corner-fed mode be radiating element patch for linear polarization array, can preferably meet circle
Polarization performance, therefore, anti-interference ability are stronger.In addition, radiating element patch, which interlocks, is placed in the both sides of feeding network, relative to line
It is smaller in lateral size for array antenna.In conclusion not only interference performance is strong for this antenna, and it is compact-sized, it is suitable for
More application scenarios.
It should be noted that antenna provided by the utility model can be applied more multi-field, such as marine radar, when
So in addition to this application scenarios, it can be applied in and other need circular polarisation and the compact scene of Structure of need, this practicality new
Type repeats no more.
On the basis of a upper embodiment, feeding network 3 specifically includes multiple quarter wavelength impedance transducers, and more
The wavelength of a stepped arrangement of quarter wavelength impedance transducer, impedance transformer 4 is a quarter waveguide wavelength.
It should be noted that the effect of impedance transformer is matched between solution microwave transmission line and microwave device, it
Reflect the power transmission relationship between input circuit and output circuit.When circuit realizes impedance matching, will obtain maximum
Power transmission.Conversely, when circuit impedance mismatch, it not only cannot get maximum power transmission, it is also possible to which damage is generated to circuit.
In the present embodiment, the problem of impedance transformer 4 is solved is exactly the matching relationship between feeding network 3 and radiating element patch 2.
By adjusting the width of impedance transformer 4, and then realize the control to the feed amplitude of each radiating element patch 2.It is appreciated that
, the wavelength of the impedance transformer 4 in the present embodiment can choose according to actual conditions, not represent and there was only a kind of this implementation
Mode.
In a specific embodiment, positioned at 3 homonymy of feeding network and between two adjacent radiating element patches 2
Spacing is 1 times of waveguide wavelength, and the spacing positioned at 3 heteropleural of feeding network and between two adjacent radiating element patches 2 is
0.5 times of waveguide wavelength.
As shown in Figure 1, using the direction where the long side of medium substrate 1 as horizontal direction, then spoke of the feeding network 3 per side
The quantity for penetrating unit patch 2 is 10, and the spacing of the radiating element patch 2 of the same side is 1 times of waveguide wavelength.Radiating element
Patch 2, which interlocks, is placed in the both sides of feeding network 3, belongs to 3 heteropleural of feeding network and radiating element adjacent in the horizontal direction
The spacing of patch 2 is 0.5 times of waveguide wavelength.It should be noted that the spacing setting of radiating element patch 2 is in the present embodiment
One such embodiment does not represent and there was only a kind of this embodiment.
In a specific embodiment, the feed amplitude of feeding network 3 uses Chebyshev's distribution mode.
In specific implementation, the Chebyshev that -30dB may be used is distributed weighting, and list is respectively radiated from feeding centre to both sides
2 amplitude normalization ratio of first patch is as shown in table 1, by the resistance for controlling 3 each quarter wavelength impedance transducer of feeding network
It is anti-than realizing required electric current ratio.
The current amplitude ratio of 1 radiating element patch of table
| I1 | 1 | I6 | 0.62 |
| I2 | 0.97 | I7 | 0.51 |
| I3 | 0.91 | I8 | 0.39 |
| I4 | 0.83 | I9 | 0.29 |
| I5 | 0.73 | I10 | 0.33 |
In order to verify the validity for the antenna that the utility model embodiment provides, specific simulation result is described below.
Fig. 3 is a kind of reflectance factor simulation result diagram that the utility model embodiment provides.As shown in figure 3, horizontal axis indicates
Frequency, the longitudinal axis indicate S11 (S11 is input reflection coefficient, that is, input return loss).In figure 3, antenna is in 9.30GHz
S11 in~9.6GHz frequency ranges<- 10dB, impedance bandwidth have reached 360MHz, S11=-30dB at centre frequency 9.4GHz,
Illustrate that antenna match is good.
Fig. 4 is a kind of antenna axial ratio simulation result diagram that the utility model embodiment provides.As shown in figure 4, in antenna axis
Than in frequency variation curve, frequency range of the antenna axial ratio provided by the utility model less than 3dB be 9.35GHz~
9.44GHz, axial ratio bandwidth have reached 110MHz, and axis ratio is 0.30dB at centre frequency, illustrates that the circular polarisation of antenna is functional.
Fig. 5 is that a kind of antenna for providing of the utility model embodiment horizontal plane at 9.4GHz frequencies normalizes directional pattern
Simulation result diagram.Fig. 6 is a kind of antenna for providing of the utility model embodiment vertical plane normalization side at 9.4GHz frequencies
The simulation result diagram of tropism figure.
See Fig. 5 and Fig. 6, the horizontal plane lobe width of the antenna of the present embodiment is 6o, and horizontal plane minor level is -18dB,
Vertical plane minor level is -13.5dB, illustrates that this antenna radiation characteristics is good, meets engine request.
On the basis of the above embodiments, the utility model also provides a kind of marine radar.The marine radar includes above-mentioned
X-band circular polarised array antenna described in embodiment.
Due to being described in detail above for the embodiment of X-band circular polarised array antenna, in the present embodiment not
It repeats again, the prior art is referred to as the other structures of marine radar.
Marine radar provided in this embodiment includes X-band circular polarised array antenna, which includes medium substrate, setting
Become in the impedance of the positive multiple radiating element patches of medium substrate, feeding network and connection radiating element patch and feeding network
Parallel operation, the metal floor and input connector for being set to the medium substrate back side, input connector pass through metal floor and medium base
The distributing point of plate and feeding network connects；Wherein, radiating element patch is corner-fed mode, and radiating element patch is staggeredly placed in feed
The both sides of network.It can be seen that this antenna by corner-fed mode be radiating element patch for linear polarization array,
Circular polarisation performance can preferably be met, therefore, anti-interference ability is stronger.In addition, radiating element patch is staggeredly placed in transmission network
The both sides of network, it is smaller in lateral size for linear array antenna.In conclusion not only interference performance is strong for this antenna, and
And it is compact-sized, it is suitable for more application scenarios.
X-band circular polarised array antenna provided by the utility model and marine radar are described in detail above.
Each embodiment is described by the way of progressive in specification, the highlights of each of the examples are with other embodiment not
Same place, just to refer each other for identical similar portion between each embodiment.For the device disclosed in the embodiment, due to it
It corresponds to the methods disclosed in the examples, so description is fairly simple, reference may be made to the description of the method.It should
It points out, it for those skilled in the art, without departing from the principle of this utility model, can also be right
Some improvement and modification can also be carried out for the utility model, these improvement and modification also fall into the protection domain of the utility model claims
It is interior.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only that
A little elements, but also include other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
Claims (10)
1. a kind of X-band circular polarised array antenna, which is characterized in that including medium substrate, to be set to medium substrate positive more
A radiating element patch, feeding network and the impedance transformer of the connection radiating element patch and the feeding network, setting
Metal floor and input connector in the medium substrate back side, the input connector pass through the metal floor and described
Medium substrate is connect with the distributing point of the feeding network；
Wherein, the radiating element patch is corner-fed mode, and the radiating element patch is staggeredly placed in the two of the feeding network
Side.
2. X-band circular polarised array antenna according to claim 1, which is characterized in that the impedance transformer is in sinuous
Type.
3. X-band circular polarised array antenna according to claim 1, which is characterized in that the feeding network specifically includes
Multiple quarter wavelength impedance transducers, and multiple stepped arrangements of the quarter wavelength impedance transducer, it is described
The wavelength of impedance transformer is a quarter waveguide wavelength.
4. X-band circular polarised array antenna according to claim 3, which is characterized in that be located at the feeding network homonymy
And the spacing between two adjacent radiating element patches is 1 times of waveguide wavelength, be located at the feeding network heteropleural and
Spacing between two adjacent radiating element patches is 0.5 times of waveguide wavelength.
5. X-band circular polarised array antenna according to claim 1, which is characterized in that the feed width of the feeding network
Degree uses Chebyshev's distribution mode.
6. according to the X-band circular polarised array antenna described in claim 1-5 any one, which is characterized in that the distributing point
For the central point of the feeding network.
7. X-band circular polarised array antenna according to claim 6, which is characterized in that the outer of the input connector is led
Body is connect with the metal floor, and the inner wire of the input connector is connect across the medium substrate with the distributing point.
8. X-band circular polarised array antenna according to claim 1, which is characterized in that the radiating element patch is 20
It is a.
9. X-band circular polarised array antenna according to claim 1, which is characterized in that opposite Jie of the medium substrate
Electric constant is 2.2, loss angle tangent 0.0009, thickness 1mm.
10. a kind of marine radar, which is characterized in that including X-band circular polarisation array day described in any one of claim 1-9
Line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820187755.0U CN207719411U (en) | 2018-02-02 | 2018-02-02 | A kind of X-band circular polarised array antenna and marine radar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820187755.0U CN207719411U (en) | 2018-02-02 | 2018-02-02 | A kind of X-band circular polarised array antenna and marine radar |
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| Publication Number | Publication Date |
|---|---|
| CN207719411U true CN207719411U (en) | 2018-08-10 |
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ID=63053316
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| CN201820187755.0U Active CN207719411U (en) | 2018-02-02 | 2018-02-02 | A kind of X-band circular polarised array antenna and marine radar |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108321555A (en) * | 2018-02-02 | 2018-07-24 | 海南热带海洋学院 | A kind of X-band circular polarised array antenna and marine radar |
| CN110289491A (en) * | 2019-06-18 | 2019-09-27 | 天津大学 | A kind of Sidelobe high-gain mold compression dipole antenna three times loading folding line |
| TWI711216B (en) * | 2019-06-06 | 2020-11-21 | 飛鳥車用電子股份有限公司 | Antenna structure |
-
2018
- 2018-02-02 CN CN201820187755.0U patent/CN207719411U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108321555A (en) * | 2018-02-02 | 2018-07-24 | 海南热带海洋学院 | A kind of X-band circular polarised array antenna and marine radar |
| TWI711216B (en) * | 2019-06-06 | 2020-11-21 | 飛鳥車用電子股份有限公司 | Antenna structure |
| CN110289491A (en) * | 2019-06-18 | 2019-09-27 | 天津大学 | A kind of Sidelobe high-gain mold compression dipole antenna three times loading folding line |
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