CN207572533U - A kind of Waveguide slot array antenna - Google Patents
A kind of Waveguide slot array antenna Download PDFInfo
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- CN207572533U CN207572533U CN201721573319.9U CN201721573319U CN207572533U CN 207572533 U CN207572533 U CN 207572533U CN 201721573319 U CN201721573319 U CN 201721573319U CN 207572533 U CN207572533 U CN 207572533U
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- waveguide
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- array antenna
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Abstract
The utility model discloses a kind of Waveguide slot array antenna, which includes mutiple antennas unit, and each antenna element includes standard waveguide and the multiple gaps being formed on one surface of standard waveguide；Wherein, multiple gaps extend along the length direction of standard waveguide；Surface has the axis that the length direction along standard waveguide extends, and is calculated according to the distance of multiple gap off-axis and realizes that Taylor weights the gap encouraged and deviates centre distance；Mutiple antennas unit is arranged side by side in the width direction along standard waveguide.The utility model passes through weights excitation with Taylor so that antenna side lobe level has and largely reduces.
Description
Technical field
The utility model is related to antenna technical field more particularly to a kind of Waveguide slot array antennas.
Background technology
Waveguide slot array antenna has bore amplitude easily controllable, has radiation efficiency high, high directivity is compact-sized
The characteristics of.But general Waveguide slot array antenna is all based on constant amplitude excitation, it is more difficult to realize Sidelobe demand.
Utility model content
For the above problem in the relevant technologies, the utility model proposes a kind of Waveguide slot array antennas, enable to
Antenna side lobe level has and largely reduces.
What the technical solution of the utility model was realized in：
The utility model provides a kind of Waveguide slot array antenna, and including mutiple antennas unit, each antenna element is equal
Including standard waveguide and the multiple gaps being formed on one surface of standard waveguide；Wherein, multiple gaps are along standard waveguide
Length direction extends；Surface have along standard waveguide length direction extend axis, according to multiple gap off-axis away from
Realize that Taylor weights the gap deviation centre distance encouraged from calculating；Mutiple antennas unit is in the width side along standard waveguide
It is arranged side by side upwards.
In one embodiment, in each antenna element, any two among multiple gaps is in the width of standard waveguide
Degree is not overlapped on direction.
In one embodiment, standard waveguide is rectangular waveguide.
In one embodiment, Waveguide slot array antenna has the battle array formed by multiple gaps of mutiple antennas unit
Face, the shape of front is rectangle.
Wherein, width direction of the length direction of the front of rectangular shape for standard waveguide, and the width direction of front
Length direction for standard waveguide.
In one embodiment, the quantity in multiple gaps is 20 in each antenna element.
In one embodiment, the quantity of mutiple antennas unit is 37.
In one embodiment, in each antenna element, multiple gaps are located at the both sides of axis respectively.
Wherein, in each antenna element, the distance between two neighboring gap is equal.
Wherein, rectangular waveguide is in hollow structure, and the thickness of the peripheral wall of hollow structure is 0.5mm.
The utility model provides a kind of Waveguide slot array antenna that excitation is weighted based on Taylor, by adding with Taylor
Power excitation so that antenna side lobe level has and largely reduces.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments, for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is the schematic diagram according to the antenna element of the utility model embodiment；
Fig. 2 is the schematic diagram according to the Waveguide slot array antenna of the utility model embodiment；
Fig. 3 is the schematic diagram according to the S11 curves of the antenna element of the utility model embodiment；
Fig. 4 is the radiation H faces directional diagram at 35GHz according to the antenna element of the utility model embodiment；
Fig. 5 is the schematic diagram of the S11 curves of unit in the Waveguide slot array antenna battle array according to the utility model embodiment；
Fig. 6 is the radiation H faces directional diagram at 35GHz according to the Waveguide slot array antenna of the utility model embodiment.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
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 whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art's all other embodiments obtained all belong to
In the range of the utility model protection.
With reference to shown in Fig. 1 and Fig. 2, the utility model provides a kind of Waveguide slot array antenna 20, including mutiple antennas
Unit 10, each antenna element 10 include standard waveguide 12 and the multiple gaps being formed on 12 1 surfaces of standard waveguide
14；Wherein, multiple gaps 14 extend along the length direction of standard waveguide 12；Surface has the length direction along standard waveguide 12
The axis of extension calculates the gap deviation centre-to-centre spacing for realizing that Taylor weights excitation according to the distance of multiple 14 off-axis of gap
From；Mutiple antennas unit 10 is arranged side by side in the width direction along standard waveguide 12.
Wherein, in each antenna element, any two among multiple gaps 14 is in the width direction of standard waveguide 12
On be not overlapped.
Wherein, standard waveguide 12 is rectangular waveguide.
Wherein, Waveguide slot array antenna 20 has the front formed by multiple gaps 14 of mutiple antennas unit 10, battle array
The shape in face is rectangle.
Wherein, width direction of the length direction of the front of rectangular shape for standard waveguide 12, and the width side of front
To the length direction for standard waveguide 12.
Wherein, the quantity in multiple gaps 14 is 20 in each antenna element 10.
Wherein, the quantity of mutiple antennas unit 10 is 37.
Wherein, in each antenna element 10, multiple gaps 14 are located at the both sides of axis respectively.
Wherein, in each antenna element 10, the distance between two neighboring gap 14 is equal.
Wherein, rectangular waveguide is in hollow structure, and the thickness of the peripheral wall of hollow structure is 0.5mm.
Wherein, it calculates and realizes that the step of Taylor weights the gap deviation centre distance of excitation is specially：Pass through Taylor first
Line source distribution function calculates antenna excitation amplitude distribution, calculates normalized conductance, then according to Waveguide slot antenna conductance
The gap deviation centre distance for realizing that Taylor weights excitation is calculated with the distance relation at gap deviation center (i.e. axis), so as to
Realize the modeling and simulating of antenna.
Above-mentioned technical proposal provides a kind of Waveguide slot array antenna that excitation is weighted based on Taylor, by with safe
Strangle weighting excitation so that antenna side lobe level has and largely reduces.
Further, Fig. 3 shows the S11 curves according to the antenna element of one embodiment, and the resonant frequency of antenna is
34.9GHz, relative bandwidth (| S11 |<- 10dB) it is 1.6%.Fig. 4 shows the radiation H faces directional diagram at 35GHz.It can see
It arrives, minor level has reached -27.2dB, and antenna realizes Sidelobe.
Fig. 5 shows the S11 curves of unit in Waveguide slot array antenna battle array, aerial array impedance bandwidth (| S11 |<-
8dB) it is：34.3GHz-35.5GHz, relative bandwidth 3.4%.Fig. 6 shows spoke of the Waveguide slot array antenna at 35GHz
H faces directional diagram is penetrated, directional diagram can see from the H faces, and minor level is -25.58dB, has relatively low minor level, is increased
Benefit is 35.7dB.
Refering to what is shown in Fig. 1, in each antenna element 10, any two among multiple gaps 14 is in standard waveguide 12
It is not overlapped in width direction.
In one embodiment, standard waveguide is rectangular waveguide.For example, BJ400 waveguides.It can be according to the feelings of practical application
Condition, such as the working frequency of antenna, select suitable standard waveguide, and the utility model does not limit this composition.
Refering to what is shown in Fig. 2, in one embodiment, Waveguide slot array antenna 20 has by the more of mutiple antennas unit 10
The front that a gap 14 is formed, the shape of front is rectangle.Wherein, the length direction of the front of rectangular shape is standard waveguide 12
Width direction, and the width direction of front be standard waveguide 12 length direction.
In one embodiment, the quantity in multiple gaps 14 is 20 in each antenna element 10.In one embodiment
In, the quantity of antenna element 10 is 37.In one embodiment, the length of standard waveguide 12 be 134.06mm, standard
The width of waveguide 12 is 5.69mm, and the thickness of standard waveguide 2 is 2.84mm.Wherein, the thickness of the peripheral wall of standard waveguide 12 is
0.5mm.Wherein, the length of the front of Waveguide slot array antenna 20 is 247.53mm, and the width of front is 134.06mm.It should
Understand, it can be according to the situation of practical application to the ruler of the quantity in gap in the quantity of antenna element, antenna element, standard waveguide
Very little, front size carries out suitable combination and configuration, and the utility model does not limit this composition.
The utility model includes being not limited in the above-mentioned embodiment provided, and those skilled in the art are in the utility model
Design under, under the premise of the principle of the utility model is not departed from, different deformation and replacement can be made, such as by mark used
Quasi-Waveguide BJ400 changes other standards waveguide, the different number of gap quantity of design, standard waveguide quantity etc. into, these deformations and
Replacement also belongs to the scope of this patent.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (10)
1. a kind of Waveguide slot array antenna, which is characterized in that including mutiple antennas unit, each antenna element includes standard
Waveguide and the multiple gaps being formed on described one surface of standard waveguide；
Wherein, the multiple gap extends along the length direction of the standard waveguide；The surface has along the standard wave
The axis of length direction extension led calculates according to the distance of the multiple gap deviation axis and realizes that Taylor's weighting swashs
Deviate centre distance in the gap encouraged；
The multiple antenna element is arranged side by side in the width direction along the standard waveguide.
2. Waveguide slot array antenna according to claim 1, which is characterized in that described more in each antenna element
Any two among a gap is not overlapped in the width direction of the standard waveguide.
3. Waveguide slot array antenna according to claim 1, which is characterized in that the standard waveguide is rectangular waveguide.
4. Waveguide slot array antenna according to claim 1, which is characterized in that the Waveguide slot array antenna has
The front formed by the multiple gap of the multiple antenna element, the shape of the front is rectangle.
5. Waveguide slot array antenna according to claim 4, which is characterized in that the length of the front of rectangular shape
Direction is the width direction of the standard waveguide, and the length direction that the width direction of the front is the standard waveguide.
6. Waveguide slot array antenna according to claim 1, which is characterized in that multiple seams described in each antenna element
The quantity of gap is 20.
7. Waveguide slot array antenna according to claim 6, which is characterized in that the quantity of the multiple antenna element is
37.
8. Waveguide slot array antenna according to claim 1, which is characterized in that described more in each antenna element
A gap is located at the both sides of the axis respectively.
9. Waveguide slot array antenna according to claim 8, which is characterized in that in each antenna element, adjacent two
The distance between a gap is equal.
10. Waveguide slot array antenna according to claim 3, which is characterized in that the rectangular waveguide is in hollow structure,
And the thickness of the peripheral wall of the hollow structure is 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721573319.9U CN207572533U (en) | 2017-11-22 | 2017-11-22 | A kind of Waveguide slot array antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721573319.9U CN207572533U (en) | 2017-11-22 | 2017-11-22 | A kind of Waveguide slot array antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207572533U true CN207572533U (en) | 2018-07-03 |
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ID=62691291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721573319.9U Active CN207572533U (en) | 2017-11-22 | 2017-11-22 | A kind of Waveguide slot array antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207572533U (en) |
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2017
- 2017-11-22 CN CN201721573319.9U patent/CN207572533U/en active Active
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