CN207947379U - A kind of compact-sized efficient and light weight slot antenna and antenna array - Google Patents
A kind of compact-sized efficient and light weight slot antenna and antenna array Download PDFInfo
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- CN207947379U CN207947379U CN201820437813.0U CN201820437813U CN207947379U CN 207947379 U CN207947379 U CN 207947379U CN 201820437813 U CN201820437813 U CN 201820437813U CN 207947379 U CN207947379 U CN 207947379U
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Abstract
The utility model discloses a kind of compact-sized efficient and light weight slot antennas, including a metal cavitg, the metal cavitg is cuboid-type, metal cavitg includes upper surface and lower face, the side of the upper surface offers at least one radiating slot group, and the radiating slot group is parallel with metal cavitg long side, and the other side accordingly offers impedance matching gap group, feed structure, couple feed between the feed structure and radiating slot group are provided in metal cavitg；The lower face is reflecting surface, and the utility model has the advantages that low section, efficient, convenient for composition Planar Phased Array Antenna, suitable for airborne and Space-borne.
Description
Technical field
The utility model belongs to antenna technical field, and in particular to a kind of compact-sized efficient and light weight slot antenna and day
Linear array.
Background technology
The radiating antenna of planar array antenna suitable for low-frequency range work there are many form, such as wave guide slot array antenna and
Micro-strip paster antenna.
Microstrip antenna is since it is low with section, light-weight, easy to process and it is integrated etc. many with other active devices to be easy to
More advantages and got a lot of applications in Phased Array Radar Antenna, but its narrower bandwidth, especially for some one-dimensional scannings
Phased array antenna in, in order to cost-effective, need that composition submatrix form will be connected by power division network between antenna, with
Submatrix is scanned for antenna element, causes to cause the efficiency of entire antenna array to decline due to it is big because being lost, and then limit it and answer
Use range；And wave guide slot array antenna has the advantages that efficient, width is mutually easy to control, processing is simple, but it is in low-frequency range waveguide
Pipe structure size is larger, leads to antenna section height and quality is larger, although by adding ridge technology that can reduce the big of wave-guide cavity wave
It is small, but add and increase the difficulty of processing of radiating guide after ridge and add ridge for low frequency airborne platform and Space-borne
Rear feed waveguide dimensions are still excessive, cannot meet the requirements.
Utility model content
The technical problem to be solved by the utility model is to：How to realize the miniaturization of Waveguide slot antenna, low section,
High efficiency.
The utility model solves above-mentioned technical problem using following technical scheme：
A kind of compact-sized efficient and light weight slot antenna, including a metal cavitg, the metal cavitg are cuboid-type,
Metal cavitg includes upper surface and lower face, and the side of the upper surface offers at least one radiating slot group, the radiation
Gap group is parallel with metal cavitg long side, and the other side accordingly offers impedance matching gap group, and feedback is provided in metal cavitg
Electric structure, couple feed between the feed structure and radiating slot group；The lower face is reflecting surface.
Preferably, a kind of compact-sized efficient and light weight slot antenna described in the utility model, the radiating slot group
To be multigroup, multigroup radiating slot group equidistantly arranges, and multigroup radiating slot is located along the same line；The impedance matching
The quantity of gap group is identical as radiating slot group, and multigroup impedance matching gap group is located along the same line；Adjacent two impedance
It is identical as the spacing between adjacent two radiating slots group with the spacing between the group of gap.
Preferably, a kind of compact-sized efficient and light weight slot antenna described in the utility model, the radiating slot group
Including two radiating slots, two radiating slots are located along the same line, and are symmetrical arranged about the center line of upper surface, two
Radiating slot central point spacing is constraint to there is not graing lobe.
Preferably, a kind of compact-sized efficient and light weight slot antenna described in the utility model, the radiating slot
Length is 1/2 wavelength, and the width of radiating slot is the 1/80 of its length.
Preferably, a kind of compact-sized efficient and light weight slot antenna described in the utility model, the impedance matching seam
Gap group includes being located at collinear three impedance matching gaps, the central point in three impedance matching gaps respectively with radiation
The central point and upper surface central point in gap are corresponding, and the length of impedance matching gap length is the 1/4 of radiating slot length.
Preferably, a kind of compact-sized efficient and light weight slot antenna described in the utility model, the feed structure packet
Feeding coaxial lines and feed connector are included, the feeding coaxial lines are parallel to radiating slot setting, and the midpoint of feeding coaxial lines
It is corresponding with the central point of metal cavitg, the midpoint connection of the feed connector and feeding coaxial lines, and form T-type 3dB work(
Divide device.
Preferably, a kind of compact-sized efficient and light weight slot antenna described in the utility model, the feeding coaxial lines
Chamber is fed including an elongated metal, the metal feed intracavitary is provided with metal straight wire, is led in the feed connector
Body extend into metal feed intracavitary and is connect with metal feed intracavitary bottom wall.
Preferably, a kind of compact-sized efficient and light weight slot antenna described in the utility model, the feeding coaxial lines
End it is corresponding with the central point of radiating slot.
Preferably, a kind of compact-sized efficient and light weight slot antenna described in the utility model, the metal cavitg
Height and width by Electromagnetic Wave Propagation and are wirelessly input to port impedance matching and are constrained.
The utility model additionally provides a kind of compact-sized efficient and light weight slot array, by above-mentioned any knot
The compact efficient and light weight slot antenna of structure tiles to be formed, at terminal short circuit at a distance from most fringe radiation slit centers point be 1/
4 wavelength.
The utility model technology advantageous effect：
Technical solutions of the utility model replace metal waveguide using couple feed between metal coaxial line and radiating slot
Pipe is fed, and reflection chamber size is much smaller than corresponding wave band wave-guide cavity wave size, and compared with waveguide feed structure, weight saving is about
80%, structure size reduces by 3/4；Simulation result shows that the slot antenna has the advantages that low section is low, efficient；It is convenient for
Planar Phased Array Antenna is formed, is suitble to and airborne and Space-borne；The reflection chamber and feed structure of the slot antenna all by
Metal material is made, and has and small, the good advantage of space environment adaptability is lost.
Description of the drawings
Fig. 1 is a kind of vertical view of compact-sized efficient and light weight slot antenna in the utility model first embodiment；
Fig. 2 is metal cavity internal structure schematic diagram in the utility model first embodiment；
Fig. 3 is a kind of compact-sized effect of efficient and light weight slot antenna and L-band in the utility model first embodiment
S11 parameters curve graph with frequency change；
Fig. 4 is the antenna that a kind of compact-sized efficient and light weight slot antenna in the utility model first embodiment is formed
Battle array structural schematic diagram；
Fig. 5 is a kind of vertical view of compact-sized efficient and light weight slot antenna in the utility model second embodiment.
Specific implementation mode
For ease of those skilled in the art understand that technical solutions of the utility model, new to this practicality in conjunction with Figure of description
Type technical solution is described further.
It is a kind of bowing for compact-sized efficient and light weight slot antenna described in the utility model first embodiment refering to fig. 1
View, including a metal cavitg 1, the metal cavitg 1 are cuboid-type, and metal cavitg 1 includes upper surface and lower face, described
The side of upper surface is opened up there are one radiating slot group, and the radiating slot group is parallel with 1 long side of metal cavitg, other side correspondence
Ground offers impedance matching gap group, and feed structure 4, group between the feed structure 4 and radiating slot are provided in metal cavitg 1
Couple feed；The lower face is reflecting surface 5.Traditional gold is replaced by the way that feed structure 4 and metal cavity 1 become one
Belong to waveguide feed, meets miniaturization, low section and the efficient requirement of slot antenna.
The radiating slot group includes two radiating slots 2, and two radiating slots 2 are located along the same line, two radiating slots
Gap 2 is symmetrical arranged about the center line of upper surface, and two radiating slots, 2 central point spacing is constraint to there is not graing lobe；Feed structure 4
Slot antenna is collectively formed with radiating slot 2, is between the two radiate energy by the form of couple feed；The impedance
Include being located at collinear three impedance matching gaps 3 with gap group, the central point in three impedance matching gaps 3 respectively with spoke
Central point and the upper surface central point for penetrating gap 2 are corresponding, i.e., the distance between the central point in adjacent two impedance matching gaps 3 is
The half of distance in same radiating slot group between the central point of two radiating slots 2.
As shown in Fig. 2, the feed structure 4 includes feeding coaxial lines 5 and feed connector 6, the feeding coaxial lines 5 are flat
Row is arranged in radiating slot 2, and the midpoint of feeding coaxial lines 5 is corresponding with the central point of metal cavitg 1, feeding coaxial lines 5
End is corresponding with the central point of radiating slot, and the feed connector 6 is connect with the midpoint of feeding coaxial lines 5, and forms T-type
3dB power splitters；Input port of the feed connector 6 as antenna, the present embodiment are preferably 50 ohm of the commercial connection of SMA heads
Device.
The end load metal of feeding coaxial lines 5 can reinforce its energy coupling between radiating slot 2, therefore, feedback
Electric coaxial line 5 is all-metal construction, and specifically, feeding coaxial lines 5 include that an elongated metal feeds chamber 7, the metal feed
The metal straight wire (not shown) extended along metal feed 7 length direction of chamber, the feed connector 6 are provided in chamber 7
Inner wire extend into metal feed chamber 7 in and with metal feed 7 inner bottom wall of chamber connect.
The length of radiating slot 2 described in the present embodiment is 1/2 wavelength, width is its length 1/80；Same radiating slot
Two radiating slots, the 2 central point spacing of gap group is constraint to there is not graing lobe, and occurrence is by operating frequency range, day space of lines
The influence of scan angle；The offset position of radiating slot 2, i.e. radiating slot 2 and the vertical range of upper surface central point with match resistance
The vertical range of anti-gap 3 to upper surface central point is equal, and occurrence is carried out by the quantity and standing-wave ratio of radiating slot group
Adjustment；The length in every impedance matching gap 3 is the 1/4 of 2 length of radiating slot；The height and width of metal cavitg 1 are by electromagnetism
The constraint of port impedance matching is propagated and be wirelessly input to wave, and specific method is known for this professional designer.
Using the slot antenna in the present embodiment under conditions of L-band, frequency range are FL~FH, then the slot antenna
Design parameter it is as follows：
The length of radiating slot 2 is 0.48 λ, width is 0.006 λ, and the central point spacing of two radiating slots 2 is 0.64 λ；Spoke
The bias for penetrating gap 2 is 0.04625 λ；The height of metal cavity 1 is 0.15 λ, width is 0.0925 λ.
It is the S11 ginsengs that work under conditions of FL~FH that Fig. 3, which provides slot antenna described in the present embodiment in L-band, frequency range,
Number curve with frequency change, can be seen that, the slot antenna in the present embodiment meets job requirement by the curve.
Above-mentioned slot antenna is connected with T/R components, and is aided with power supply, wave control and installation component etc. and can be extended to large size
Active phase antenna array is formed by large-scale active phase to be tiled by the slot antenna in eight the present embodiment as shown in Figure 4
Control antenna array (power supply, wave control and installation component are not shown in figure), at terminal short circuit with most 2 center of fringe radiation gap
The distance of point is 1/4 wavelength, i.e. 0.24 λ.
Fig. 5 is a kind of vertical view of compact-sized efficient and light weight slot array in the utility model second embodiment
Scheme, the radiating slot group in slot antenna in the present embodiment is three groups, and three groups of radiating slot groups equidistantly arrange, and three groups of spokes
Gap is penetrated to be located along the same line；Matching impedance gap group is also three groups, and three groups of matching impedance gap groups are located at always
On line；And the distance between the group of two adjacent groups matching impedance gap between two adjacent groups radiating slot group at a distance from it is equal.Other knots
Structure is identical with first embodiment, and details are not described herein again.
It should be noted that the distance between the group of above-mentioned two adjacent groups matching impedance gap, refers to two adjacent groups matching resistance
Distance in anti-gap group between adjacent two impedance matching gaps, 3 central point；Spacing between two adjacent groups radiating slot group, refers to
It is the distance between two radiating slots, 2 central point adjacent in two adjacent groups radiating slot group.
Technical solutions of the utility model are exemplarily described utility model above in conjunction with attached drawing, it is clear that this practicality
Novel specific implementation is not subject to the restrictions described above, as long as using the methodology and technical solution progress of the utility model
Various unsubstantialities improve, or it is not improved the design of utility model and technical solution are directly applied into other occasions,
It both is within the protection scope of the present invention.
Claims (10)
1. a kind of compact-sized efficient and light weight slot antenna, including a metal cavitg, the metal cavitg is cuboid-type, gold
It includes upper surface and lower face to belong to cavity, which is characterized in that and the side of the upper surface offers at least one radiating slot group,
The radiating slot group is parallel with metal cavitg long side, and the other side accordingly offers impedance matching gap group, in metal cavitg
It is provided with feed structure, couple feed between the feed structure and radiating slot group；The lower face is reflecting surface.
2. a kind of compact-sized efficient and light weight slot antenna according to claim 1, which is characterized in that the radiating slot
Gap group is multigroup, and multigroup radiating slot group equidistantly arranges, and multigroup radiating slot is located along the same line；The impedance
The quantity for matching gap group is identical as radiating slot group, and multigroup impedance matching gap group is located along the same line；Adjacent two resistance
Spacing between anti-matching gap group is identical as the spacing between adjacent two radiating slots group.
3. a kind of compact-sized efficient and light weight slot antenna according to claim 1 or 2, which is characterized in that the spoke
It includes two radiating slots to penetrate gap group, and two radiating slots are located along the same line, and about the center line pair of upper surface
It is constraint to there is not graing lobe to claim setting, two radiating slot central point spacing.
4. a kind of compact-sized efficient and light weight slot antenna according to claim 3, which is characterized in that the radiating slot
The length of gap is 1/2 wavelength, and the width of radiating slot is the 1/80 of its length.
5. a kind of compact-sized efficient and light weight slot antenna according to claim 3, which is characterized in that the impedance
Include being located at collinear three impedance matching gaps with gap group, the central point in three impedance matching gaps respectively with
The central point and upper surface central point of radiating slot are corresponding, and the length of impedance matching gap length is the 1/ of radiating slot length
4。
6. a kind of compact-sized efficient and light weight slot antenna according to claim 1 or 2, which is characterized in that the feedback
Electric structure includes feeding coaxial lines and feed connector, and the feeding coaxial lines are parallel to radiating slot setting, and feed coaxial
The midpoint of line is corresponding with the central point of metal cavitg, the midpoint connection of the feed connector and feeding coaxial lines, and forms T
Type 3dB power splitters.
7. a kind of compact-sized efficient and light weight slot antenna according to claim 6, which is characterized in that the feed is same
Axis includes that an elongated metal feeds chamber, and the metal feed intracavitary is provided with metal straight wire, the feed connector
Inner wire extend into metal feed intracavitary and is connect with metal feed intracavitary bottom wall.
8. a kind of compact-sized efficient and light weight slot antenna according to claim 7, which is characterized in that the feed is same
The end of axis is corresponding with the central point of radiating slot.
9. a kind of compact-sized efficient and light weight slot antenna according to claim 1, which is characterized in that the metal is empty
The height of chamber and width are by Electromagnetic Wave Propagation and are wirelessly input to port impedance matching and are constrained.
10. a kind of compact-sized efficient and light weight slot array, compact-sized by claim 1-9 any one of them one kind
Efficient and light weight slot antenna tile to be formed, at terminal short circuit at a distance from most fringe radiation slit centers point be 1/4 wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820437813.0U CN207947379U (en) | 2018-03-29 | 2018-03-29 | A kind of compact-sized efficient and light weight slot antenna and antenna array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820437813.0U CN207947379U (en) | 2018-03-29 | 2018-03-29 | A kind of compact-sized efficient and light weight slot antenna and antenna array |
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| Publication Number | Publication Date |
|---|---|
| CN207947379U true CN207947379U (en) | 2018-10-09 |
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ID=63698558
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820437813.0U Active CN207947379U (en) | 2018-03-29 | 2018-03-29 | A kind of compact-sized efficient and light weight slot antenna and antenna array |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108539414A (en) * | 2018-03-29 | 2018-09-14 | 中国电子科技集团公司第三十八研究所 | A kind of compact-sized efficient and light weight slot antenna and antenna array |
| CN109687104A (en) * | 2018-12-20 | 2019-04-26 | 中国科学院上海微系统与信息技术研究所 | Narrow pitch angle list slot antenna of a kind of width horizontal angle and preparation method thereof |
| CN113451759A (en) * | 2021-07-09 | 2021-09-28 | 中国电子科技集团公司第三十八研究所 | Light waveguide antenna array based on virtual metal wall |
-
2018
- 2018-03-29 CN CN201820437813.0U patent/CN207947379U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108539414A (en) * | 2018-03-29 | 2018-09-14 | 中国电子科技集团公司第三十八研究所 | A kind of compact-sized efficient and light weight slot antenna and antenna array |
| CN108539414B (en) * | 2018-03-29 | 2023-11-14 | 中国电子科技集团公司第三十八研究所 | Compact-structure light high-efficiency slot antenna and antenna array |
| CN109687104A (en) * | 2018-12-20 | 2019-04-26 | 中国科学院上海微系统与信息技术研究所 | Narrow pitch angle list slot antenna of a kind of width horizontal angle and preparation method thereof |
| CN109687104B (en) * | 2018-12-20 | 2024-03-01 | 中国科学院上海微系统与信息技术研究所 | Wide-horizontal angle and narrow-pitch angle single-slit antenna and manufacturing method thereof |
| CN113451759A (en) * | 2021-07-09 | 2021-09-28 | 中国电子科技集团公司第三十八研究所 | Light waveguide antenna array based on virtual metal wall |
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