CN207353448U - Antenna - Google Patents
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- CN207353448U CN207353448U CN201721354030.8U CN201721354030U CN207353448U CN 207353448 U CN207353448 U CN 207353448U CN 201721354030 U CN201721354030 U CN 201721354030U CN 207353448 U CN207353448 U CN 207353448U
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Abstract
The utility model discloses a kind of antenna, including antenna body and the waveguide with antenna body coupling, antenna body to include：Base portion, it includes side wall, and side wall, which encloses, to be set as tubaeform to form opposite the first openend and the second openend, and the aperture area of the first openend is less than the aperture area of the second openend, and the first openend is coupled with waveguide；Epitaxy part, it includes medium substrate and is fixed on multiple patches of the radiating surface of medium substrate, and medium substrate is fixed and stretched out with base portion in the second openend of base portion, wherein, it is smaller with the size of the nearer patch of the second openend distance of base portion.The beneficial effects of the utility model are, patch array structure is designed by the fringe region in antenna, enable and episternites radiation is effectively inhibited on the premise of gain of the antenna on greatest irradiation direction is not reduced, so as to improve the directional properties, antijamming capability and Electromagnetic Compatibility of antenna, antenna is made still to be worked normally under complicated electromagnetic environment.
Description
Technical field
The communications field is the utility model is related to, more specifically to a kind of antenna.
Background technology
Antenna is a kind of component for being applied to be used for launching or receiving electromagnetic wave in wireless device, is used for realization unbounded matchmaker
The conversion between the guided wave on electromagnetic wave and transmission line in Jie.Radio communication, broadcast, TV, radar, navigation, electronics
The engineering system that the needs such as confrontation, remote sensing, radio astronomy use electromagnetic waves to transmit information will work by antenna.
The characteristic parameters of description antenna have directional diagram, directivity factor, gain, input impedance, radiation efficiency, polarization and bandwidth.
A kind of structure type of antenna includes electromagnetic horn, and electromagnetic horn refers to the horn-like day of waveguide terminal flare up
Line, since electromagnetic horn is simple in structure and directional diagram is easily controllable, is typically used as medium directivity antenna；Electromagnetic horn has knot
The advantages that structure is simple, cost is low, high gain, is widely used in engineering.
As the electromagnetic environment under the conditions of the development of electronic information, battlefield etc. becomes increasingly complex, in order to improve complicated electromagnetism
The directional properties of antenna in environment, it usually needs reduce antenna episternites radiation, this can not only reduce antenna to itself other
The interference of electronic equipment, and the antijamming capability of antenna can also be improved, make antenna still can be just under complicated electromagnetic environment
Often work, improves the Electromagnetic Compatibility of antenna.
As shown in Figure 1, the antenna 1000 of the prior art includes antenna body 1100 and waveguide 1200, wherein antenna body
1100 be in horn-like, and the aperture area of the first openend of antenna body 1100 is less than the second openend of antenna body 1100
Aperture area, the first openend of antenna body 1100 are connected with waveguide 1200 to realize feed.Wherein, waveguide 1200 and antenna
Main body 1100 is made of electrically conductive material.However, the antenna 1000 of the prior art is radiated with stronger episternites, cause antenna
1000 directional properties are poor, antijamming capability is poor, Electromagnetic Compatibility is poor, and also other electronic equipments can be caused
Stronger electromagnetic interference.
In view of the above shortcomings of the prior art, at present, the episternites radiation for weakening antenna mainly has following several method：1st, change
Become antenna marginal texture, such as antenna edge is designed as zigzag to reduce the edge scatter of antenna, its principle and stealthy skill
Edge sawtooth technology in art is similar, but this method make it that the working band of antenna is relatively narrow, is difficult full under many circumstances
Sufficient design requirement；2nd, absorbing material is loaded at the antenna back side, to absorb the electromagnetic wave towards the radiation of antenna episternites, but this method meeting
The volume and weight of antenna is dramatically increased, is made troubles for design, transport and the use of antenna；3rd, it is existing for electromagnetic horn
There is technology that loudspeaker inner wall can be designed to corrugated periodic shape, this method can not only reduce the episternites radiation of electromagnetic horn,
Cross polarization level can also be reduced, but this method design process and method are extremely complex, and the work of this electromagnetic horn
It is relatively narrow to make frequency band so that design difficulty further increases.
Utility model content
In order to solve the above-mentioned problems of the prior art, the utility model provides a kind of antenna, it can not influenced
Episternites radiation is effectively inhibited in the case of gain on antenna maximum direction, to improve the directional properties of antenna, anti-interference energy
Power and Electromagnetic Compatibility.
The utility model provides a kind of antenna, what the antenna was coupled including antenna body and with the antenna body
Waveguide, it is characterised in that the antenna body includes：Base portion, it includes side wall, the side wall enclose be set as it is tubaeform to form phase
To the first openend and the second openend, the aperture area of first openend is less than the opening face of second openend
Product, first openend is coupled with the waveguide；Epitaxy part, it includes medium substrate and is fixed on the spoke of the medium substrate
Multiple patches of reflective surface, the medium substrate are fixed in second openend of the base portion and the base portion and to extensions
Stretch, wherein, it is bigger with the size of the nearer patch of the second openend distance of the base portion.
Preferably, the aperture area of the first openend of the epitaxy part is more than opening for the second openend of the epitaxy part
Open area, the second openend of the epitaxy part are seamlessly connected with the second openend of the base portion.
Preferably, the antenna body is in horn-like.
Preferably, the antenna body is in conical horn shape or pyramid loudspeaker shape.
Preferably, the antenna body is horn-like in four sides pyramid, and the first openend of the epitaxy part is rectangular.
Preferably, in the epitaxy part, the radiating surface of the medium substrate includes multiple periodic units, each
A patch is equipped with the periodic unit, the multiple patch is set spaced reciprocally.
Preferably, the multiple periodic unit is arranged in array, the patch in periodic unit described in same a line
Size it is identical.
Preferably, the multiple patch is square, with second openend of base portion distance it is nearer described in
The length of side of patch is bigger.
Preferably, the material of the medium substrate includes F4B composite materials, FR-4 composite materials, polytetrafluoroethylene (PTFE) and gathers
At least one of styrene.
Preferably, the patch is made of an electrically conducting material.
The beneficial effects of the utility model are to design patch array structure by the fringe region in antenna so that antenna
Episternites radiation can be effectively inhibited on the premise of the gain on not reducing greatest irradiation direction, so as to improve determining for antenna
To performance, antijamming capability and Electromagnetic Compatibility, antenna is made still to be worked normally under complicated electromagnetic environment.
Brief description of the drawings
By the description to the utility model embodiment referring to the drawings, above-mentioned and other mesh of the utility model
, feature and advantage will be apparent from.
Fig. 1 shows the structure diagram of the antenna of the prior art.
Fig. 2 shows the structure diagram of the antenna of the utility model embodiment.
Fig. 3 shows the enlarged diagram of a-quadrant in Fig. 2.
Fig. 4 shows the E surface radiations direction schematic diagram of the antenna of the utility model embodiment under identical radiating aperture and existing
The E surface radiation direction schematic diagrams of the antenna of technology.
Fig. 5 shows the H surface radiations direction schematic diagram of the antenna of the utility model embodiment under identical radiating aperture and existing
The H surface radiation direction schematic diagrams of the antenna of technology.
Embodiment
Hereinafter reference will be made to the drawings is more fully described the utility model.In various figures, identical element is using similar
Reference numeral represent.For the sake of clarity, the various pieces in attached drawing are not necessarily to scale.In addition, may in figure
Some known parts are not shown.
It describe hereinafter many specific details of the utility model, such as the structure of device, material, size, place
Science and engineering skill and technology, to be more clearly understood that the utility model.But just as the skilled person will understand,
The utility model can not be realized according to these specific details.
In the following, the utility model is described in detail referring to the drawings.
Fig. 2 shows the structure diagram of the antenna of the utility model embodiment.
The utility model embodiment is illustrated by taking electromagnetic horn as an example below.
As shown in Fig. 2, the antenna 2000 of the utility model embodiment includes antenna body 2100 and is coupled with antenna body
The waveguide 2200 of connection, wherein 2100 shape of antenna body are in horn-like, such as conical horn shape or pyramid loudspeaker shape.
Antenna body 2100 includes base portion 2110 and epitaxy part 2120.Wherein base portion 2110 includes surrounding tubaeform side wall
To form opposite the first openend 2110A and the second openend 2110B, the aperture area of the first openend 2110A is less than the
The aperture area of two openend 2110B, the first openend 2110A are coupled with waveguide 2200.First openend of epitaxy part 2120
2120A and the second openend 2120B are opposite, and the aperture area of the first openend 2120A is more than the opening of the second openend 2120B
Area, the second openend 2120B of epitaxy part and the second openend 2110B of base portion are seamlessly connected.
In the present embodiment, antenna body 2100 is horn-like in four sides pyramid, i.e., antenna body 2100 is internally formed one
Trapezoidal shape cavity, the first openend 2120A of epitaxy part 2120 are rectangular (i.e. parallel to the plane of XOY plane as shown in Figure 2
It is upper rectangular), and each face of the side wall of base portion 2110 is located in identical plane with the corresponding surface of epitaxy part 2120 respectively.Electricity
The internal cavity that magnetic wave can be entered antenna body 2100 by waveguide 2200 is finally launched to outside, or antenna body 2100 is from outer
Boundary receives electromagnetic wave and conducts the electromagnetic wave to waveguide 2200.
Fig. 3 shows the enlarged diagram of a-quadrant in Fig. 2.
As shown in Figures 2 and 3, the epitaxy part 2120 of the antenna 2000 of the utility model embodiment includes medium substrate 2121
(radiating surface of medium substrate is formed with waveguide and loudspeaker base portion with multiple patches 2122 for being fixed on medium substrate radiating surface
Inner space it is corresponding).Medium substrate 2121 is for example by F4B composite materials, FR-4 composite materials, polytetrafluoroethylene (PTFE) or polyphenyl
Ethene is made, and the electrical insulating property of these materials is very good, therefore interference will not be produced to the electric field of electromagnetic wave, and with excellent
Chemical stability, corrosion resistance, service life length；Patch 2122 is made such as the conductive material as copper, the thickness of patch 2122
Degree for example, 0.01-0.5mm.
Preferably, as shown in Figure 3 in the antenna 2000 of the utility model embodiment, the medium substrate of epitaxy part 2120
2121 radiating surfaces are divided into multiple periodic unit 2121u, and a patch 2122, and each patch are equipped with each periodic unit
Piece is set spaced reciprocally.
Preferably, the size of each periodic unit is identical.Such as each periodic unit is the square that the length of side is 15mm.
Preferably, each periodic unit 2121u on the radiating surface of the medium substrate 2121 of epitaxy part 2120 is arranged in array
Cloth, 2122 size of patch in the periodic unit 2121u with a line is identical, closer to the second openend of base portion 2110
2122 size of patch in the periodic unit row of 2110B is bigger.For example, the patch 2122 in each periodic unit 2121u is in pros
Shape, by the second openend 2110B of base portion 2110 to epitaxy part on 2121 radiating surface of medium substrate of epitaxy part 2120
The incremental multirow periodic unit of periodic unit number is placed with the direction of 2120 the first openend 2120A.
As a kind of specific embodiment, when designing the antenna 2000 of the utility model with centre frequency 5GHz, medium base
The dielectric constant of plate 2121 is set to 5.9 (can need to select the material with differing dielectric constant according to different designs), medium
The thickness of substrate 2121 is, for example, 2mm；The periodic unit 2121u of the radiating surface of epitaxy part 2120 is in the pros that the length of side is 15mm
Shape region；By the second openend 2110B of base portion 2110 to extension on 2121 radiating surface of medium substrate of epitaxy part 2120
The first row is placed with the direction of the first openend 2120A in portion 2120 successively to the 6th row periodic unit, the first row to the 6th
Periodic unit number in row periodic unit is incremented by, and the length of side of each patch 2122 is, for example, 14.3mm in the first row periodic unit,
The length of side of each patch 2122 is, for example, 13mm in second row periodic unit, the length of side example of each patch 2122 in the third line periodic unit
Such as it is 11.3mm, the length of side of each patch 2122 is, for example, 9.5mm in fourth line periodic unit, each patch in fifth line periodic unit
2122 length of side is, for example, 7.8mm, and the length of side of each patch 2122 is, for example, 6.3mm in the 6th row periodic unit.Further, will
The cavity design of antenna body 2100 is four sides pyramid, and the radiation port of export of epitaxy part 2120 is square.
To know the performance of antenna, it usually needs the far field radiation characteristics of antenna are measured or emulated, to be wrapped
Antenna pattern containing information such as sidelobe level, gain and frequency bandwidths.
Analog simulation test is carried out to the antenna of above-mentioned specific embodiment under the centre frequency of 5GHz, E faces can be obtained
With the antenna pattern in H faces.As depicted in figs. 1 and 2, in antenna pattern, rectangular first of epitaxy part 2120 is opened
Origin O of the vertex as rectangular coordinate system in space in mouth end 2120A, X-axis and the Y-axis difference of the rectangular coordinate system in space
The two right-angle sides extension being connected along in the first openend 2120A with origin O, the Z axis of the rectangular coordinate system in space are directed toward day
The radiation direction of line 2000.Based on the rectangular coordinate system in space, by projection of the radiation direction on XOY plane and X-axis it
Between angle be defined as azimuth φ, the angle between radiation direction and Z axis is defined as pitching angle theta, by azimuthFor
90 ° and pitching angle theta are that -180 ° to+180 ° of radiator plane is defined as E faces, by azimuthFor 0 ° and pitching angle theta for-
180 ° to+180 ° of radiator plane is defined as H faces.
Fig. 4 shows the E surface radiations direction schematic diagram of the antenna of the utility model embodiment under identical radiating aperture and existing
The E surface radiation direction schematic diagrams of the antenna of technology.
As shown in figure 4, when pitching angle theta is equal to 0 °, the greatest irradiation of the generation of antenna 2000 of the utility model embodiment
Directive gain is identical with the greatest irradiation directive gain that the antenna 1000 of the prior art produces, and when pitching angle theta is equal to ± 180 °
When (antenna episternites radiation direction), the radiation gain of the antenna 2000 of the utility model embodiment is significantly lower than the prior art
The episternites radiation gain of antenna 1000, so that the antenna 1000 of the antenna 2000 of the utility model embodiment compared with the prior art
Episternites radiation can be significantly inhibited, improves the Electromagnetic Compatibility of antenna.
Fig. 5 shows the H surface radiations direction schematic diagram of the antenna of the utility model embodiment under identical radiating aperture and existing
The H surface radiation direction schematic diagrams of the antenna of technology.
As shown in figure 5, when pitching angle theta is equal to 0 °, the greatest irradiation of the generation of antenna 2000 of the utility model embodiment
Directive gain is identical with the greatest irradiation directive gain that the antenna 1000 of the prior art produces, and when pitching angle theta is equal to ± 180 °
When (antenna episternites radiation direction), the radiation gain of the antenna 2000 of the utility model embodiment is significantly lower than the prior art
The episternites radiation gain of antenna 1000, so that the antenna 1000 of the antenna 2000 of the utility model embodiment compared with the prior art
Episternites radiation can be significantly inhibited, improves the Electromagnetic Compatibility of antenna.
In conclusion the antenna of the utility model embodiment designs patch array structure by edge region so that day
Line can effectively inhibit episternites radiation on the premise of the gain on not reducing greatest irradiation direction, so as to improve antenna
Directional properties, antijamming capability and Electromagnetic Compatibility, make antenna still to be worked normally under complicated electromagnetic environment.
The embodiment of the utility model is described above in conjunction with attached drawing, but the utility model is not limited to
The embodiment stated, above-mentioned embodiment is only schematical, rather than restricted, this area it is common
Technical staff is not departing from the utility model aims and scope of the claimed protection situation under the enlightenment of the utility model
Under, many forms can be also made, these are belonged within the protection of the utility model.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only will including those
Element, but also including other elements that are not explicitly listed, or further include as this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there are other identical element in process, method, article or equipment including the key element.
As described above, these embodiments do not have all details of detailed descriptionthe to embodiment according to the utility model,
Also it is only the specific embodiment not limit the utility model.Obviously, as described above, many modification and change can be made
Change.This specification is chosen and specifically describes these embodiments, and being should in order to preferably explain the principle and reality of the utility model
With so that skilled artisan can repairing using the utility model and on the basis of the utility model well
Change use.The utility model is limited by claims and its four corner and equivalent.
Claims (10)
1. a kind of antenna, the antenna includes antenna body and the waveguide with antenna body coupling, it is characterised in that institute
Stating antenna body includes：
Base portion, it includes side wall, the side wall enclose be set as it is tubaeform to form opposite the first openend and the second openend, institute
The aperture area for stating the first openend is less than the aperture area of second openend, first openend and the waveguide coupling
Close；
Epitaxy part, it includes medium substrate and is fixed on multiple patches of the radiating surface of the medium substrate, the medium base
Plate is fixed and stretched out with the base portion in second openend of the base portion, wherein, opened with the second of the base portion
The size of the nearer patch of mouth end distance is bigger.
2. antenna according to claim 1, it is characterised in that the aperture area of the first openend of the epitaxy part is more than
The aperture area of second openend of the epitaxy part, the second openend of the epitaxy part and the second openend of the base portion
It is seamlessly connected.
3. antenna according to claim 2, it is characterised in that the antenna body is in horn-like.
4. antenna according to claim 3, it is characterised in that the antenna body is in conical horn shape or pyramid loudspeaker
Shape.
5. antenna according to claim 4, it is characterised in that the antenna body is horn-like in four sides pyramid, described outer
The first openend for prolonging portion is rectangular.
6. antenna according to claim 1, it is characterised in that in the epitaxy part, the spoke of the medium substrate
Reflective surface includes multiple periodic units, is equipped with a patch in each periodic unit, the multiple patch is mutual
Set every ground.
7. antenna according to claim 6, it is characterised in that the multiple periodic unit is arranged in array, with described
The size of the patch in the equidistant periodic unit in two openends is identical.
8. the antenna according to claim 6 or 7, it is characterised in that the multiple patch is square, with the base portion
The length of side of the nearer patch of the second openend distance is bigger.
9. antenna according to claim 1, it is characterised in that the material of the medium substrate include F4B composite materials,
At least one of FR-4 composite materials, polytetrafluoroethylene (PTFE) and polystyrene.
10. antenna according to claim 1, it is characterised in that the patch is made of an electrically conducting material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721354030.8U CN207353448U (en) | 2017-10-19 | 2017-10-19 | Antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721354030.8U CN207353448U (en) | 2017-10-19 | 2017-10-19 | Antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207353448U true CN207353448U (en) | 2018-05-11 |
Family
ID=62355694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721354030.8U Active CN207353448U (en) | 2017-10-19 | 2017-10-19 | Antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207353448U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111509390A (en) * | 2020-04-21 | 2020-08-07 | 长安大学 | ISM frequency band microstrip array antenna with negative magnetic conductivity material and manufacturing method |
-
2017
- 2017-10-19 CN CN201721354030.8U patent/CN207353448U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111509390A (en) * | 2020-04-21 | 2020-08-07 | 长安大学 | ISM frequency band microstrip array antenna with negative magnetic conductivity material and manufacturing method |
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