CN208522072U - The closely coupled antennae battle array of broadband and wideangle low section - Google Patents
The closely coupled antennae battle array of broadband and wideangle low section Download PDFInfo
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- CN208522072U CN208522072U CN201821172146.4U CN201821172146U CN208522072U CN 208522072 U CN208522072 U CN 208522072U CN 201821172146 U CN201821172146 U CN 201821172146U CN 208522072 U CN208522072 U CN 208522072U
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- power divider
- balun
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Abstract
The utility model belongs to Radar Technology and communication technique field, specially closely coupled antennae battle array.Including forming supporting element by support plate, support plate framework, reflecting plate and feed connection, antenna traces are formed by Wilkinson power divider, feed Balun, radiation electric flow and frequency-selective surfaces；Antenna traces are pressed by two pieces of medium copper-clad plates, and points four layers: the line construction layer of top dielectric plate upper and lower surfaces and the line construction layer of layer dielectric plate upper and lower surfaces；First, fourth layer is symmetrical irradiation structure, and the second layer is hollow plate, and third layer is power divider and balun；First, fourth layer is electrically connected by conductive through hole, provides closed environment for third layer, inhibits energy leakage.Radiation electric flow uses symmetrical structure, can halve the impedance that balun is experienced with the current sheet place of coupling；Frequency-selective surfaces are located in third layer, and the impedance matching dielectric layer being covered on current sheet is substituted with frequency-selective surfaces, antenna processing and installation can be made more simple and convenient.
Description
Technical field
The utility model belongs to radar and communication technique field, and in particular to a kind of tightly coupled antenna array.
Background technique
In present electronic system, the installation various forms of antennas of multi-section are generally required to realize different functions, example
Such as there are search radar, fire control radar, communication radar and identification friend-or-foe radar in military field；And then there is 2G in civil telecommunications field
Communication antenna, 3G communication antenna and 4G communication antenna etc..Under normal conditions, these radars or antenna are limited due to various factors
It needs to be mounted on a platform.But the problems such as due to electromagnetic interference, bulk limitation, it is serious to affect each antenna
Performance；And during installation and debugging, in order to which the interference between each antenna of reduction as far as possible will devote a tremendous amount of time, such as
This significantly increases construction cost again, it is therefore desirable to carry out the research of low section broadband and wideangle array antenna.
Closely coupled antennae battle array is the concept based on Wheeler current sheet, by increasing an additional mutual coupling electricity between antennas
Hold and enables the impedance of each unit in array to offset the input induction reactance introduced by array floor in non-quarter-wave section
It keeps stablizing in very wide frequency range and angular range, to realize the broadband and wideangle characteristic of array.But traditional electric current
Piece is the model of a rationality, various problem can be encountered in the problem of being engineered, such as the coupling between antenna element
Conjunction is difficult accurately to modulate, the integration problem of the feed structure of antenna, and since the scanning of surface wave and common mode resonance introducing is blind
Angle etc..
Summary of the invention
It is good, simple structure and convenient processing that the purpose of this utility model is to provide a kind of array stabilities, low-cost
The closely coupled antennae battle array of broadband and wideangle low section, to overcome the above-mentioned deficiency of existing antenna array.
The closely coupled antennae battle array of broadband and wideangle low section provided by the utility model, array can be divided into two large divisions: support
Part and antenna traces；The supporting element is made of support plate, support plate framework, reflecting plate and feed connection etc.；The antenna line
Route the composition such as Wilkinson power divider, feed Balun, radiation electric flow and frequency-selective surfaces；The main body of antenna traces
Structure is pressed by two pieces of medium copper-clad plates, and can be divided into four layers: the line construction layer 1 of top dielectric plate upper surface, upper layer are situated between
The route of the line construction layer 2 of scutum lower surface, the line construction layer 3 of layer dielectric plate upper surface and layer dielectric plate lower surface
Structure sheaf 4；It is symmetrical irradiation structure that first layer and the 4th layer be upper, and the second layer is hollow plate, in third layer for power divider and
Balun；All routes are all made of traditional PCB technology and are processed, and the supporting element material of antenna is aluminium alloy, by numerical control machine
Bed processing；Wherein:
The support plate provides support for antenna traces, is consolidated the antenna traces made of traditional PCB technique screw
Determine onto the frame of support plate, be made into a sub- array module, multiple such sub-array modules are placed side by side, that is, form one two
The big battle array of the antenna of dimension；
The reflecting plate is metal floor, is used for reflection electromagnetic wave, to improve the effect of antenna gain, reflecting plate passes through spiral shell
Silk is fixed together with support plate framework；
The feed connection is coaxial feed port, and feed connection is directly anchored to prop up by the mode being threadably secured
On fagging, then coaxial fitting and fixed antenna traces on the supporting plate are linked together by welding；
The power divider is single order Wilkinson power divider, the input terminal with coaxial fitting and power divider
It is connected, the output end of power divider is connected with the input terminal of balun；
Described feed Balun one end is directly connected with Wilkinson power divider, and the other end is by way of coupling to spoke
Radio flow feed；
The power divider and feed Balun are strip lines configuration, and the floor of two sides is electrically connected with conductive through hole,
Closed cavity body structure is formed, the coupling between feed line is reduced；
The radiation electric flow be in the nature between a dipole antenna, with adjacent dipole by way of close coupling
An equivalent capacity is introduced, for offsetting the inductance introduced by reflecting plate, therefore can be worked in very wide bandwidth；
The frequency-selective surfaces are rectangle metal strip of the be set with above current sheet, which is equivalent to a resistance
Resistance parallel operation, effect is identical as traditional matched media plate, and in addition frequency-selective surfaces can be integrally machined with antenna traces, be exempted from
The installation in later period is gone, so that array structure is more compact simple, processing and manufacturing is more convenient, and production maintenance cost is also lower.
In the utility model, the feed connection is exposed with by cutting off top dielectric plate by welding
Strip line be connected, strip line is exactly microstrip line at this time.
In the utility model, the power divider is the Wilkinson power divider of single order, is added in two output ends
The pad of isolation resistance between mouthful guides to first layer by way of electroplating ventilating hole, i.e., as where power divider route under
The line construction layer 3 of layer dielectric-slab upper surface is guided on the line construction layer 1 of top dielectric plate upper surface.
In the utility model, the reflecting plate and support plate separate machined are fixed to support frame finally by one piece of screw
On frame.
In the utility model, the radiation electric flow use symmetrical structure, i.e., the 1st layer with the 4th layer on current sheet knot
Structure is just the same, is forming a structure in parallel with the coupling port of balun to halve the impedance that it is experienced, be located at the 1st layer with
It is electrically connected between 4th layer of symmetrical current piece by conductive through hole, promotes bandwidth to increase coupling, same adjacent current sheet
Between increase coupling by the way of being directly connected to, improve the stability and bandwidth of array.
In the utility model, the 1st layer and the 4th layer of copper foil is connected to one piece by conductive through hole, be power divider and
Balun provides a closed environment.
In the utility model, the impedance transformer of radiating element and free space uses the structure of frequency-selective surfaces, frequency
Rate selects the size on surface more smaller than the quarter-wave of most high frequency.
Tightly coupled antenna array provided by the utility model, compact-sized simple, convenient processing and manufacture, production maintenance cost
It is low；The stability of array is good, i.e., the impedance of each unit can keep stablizing in very wide frequency range and angular range in array,
Realize the broadband and wideangle characteristic of array.
Detailed description of the invention
Fig. 1 is the structural diagrams of antenna element.Wherein, (a) side view, (b) front view.
Fig. 2 is the structure diagram of one dimensional linear array module.
Fig. 3 is 16 × 16 array structure schematic diagrames.
Fig. 4 is the standing wave pattern in the face H under periodic boundary condition.
Fig. 5 is the standing wave pattern in the face E under periodic boundary condition.
Fig. 6 is the element pattern under 16 × 16 face array center unit H different frequencies, polarized direction based on solid line
Figure, from top to bottom respectively 18Ghz to 6Ghz, dotted line are cross-polarized directional diagram.
Fig. 7 is the element pattern under 16 × 16 face array center unit E different frequencies, polarized direction based on solid line
Figure, from top to bottom respectively 18Ghz to 6Ghz, dotted line are cross-polarized directional diagram.
Figure label: 1 is the first layer of four layers of dielectric-slab, and 2 be the second layer, and 3 be third layer, and 4 be the 4th layer, and 5 be support
Plate, 6 be feed connection, and 7 be Wilkinson power divider, and 8 be reflecting plate, and 9 be feed Balun, and 10 be conductive through hole, and 11 are
Radiation electric flow, 12 be frequency-selective surfaces, the support column in 13 support plates, and 14 be the screw of mounting medium plate, and 15 be support
The frame of plate, 16 be the screw of fixed support plate, and 17 be the screw of fixed reflecting plate, and 18 be the installation screw of antenna entirety.
Specific embodiment
As shown in Figure 1 be the cell schematics of closely coupled antennae battle array, antenna mainly consists of two parts, i.e., antenna traces and
Supporting element, the two separate machined, antenna traces are processed by traditional PCB technology, and supporting element then carries out machine by numerically-controlled machine tool and adds
Work.
Antenna traces are four-layer structure, i.e. the line construction layer 1 of top dielectric plate upper surface, top dielectric plate lower surface
The line construction layer 4 of line construction layer 2, the line construction layer 3 of layer dielectric plate upper surface and layer dielectric plate lower surface, by two
Block medium copper-clad plate presses, and traditional photoetching process is first passed through before pressing by required route and etches into top dielectric plate
On layer dielectric plate, required conductive through hole is drilled out with drilling machine again after pressing, then in conduction by way of plating
Copper facing in through-hole is finally gold-plated equal post-processing.
The main body of supporting element is made of support plate framework, support plate and reflecting plate three parts, and 8 be reflecting plate in Fig. 1, and 5 are
Support plate, 6 be coaxial fitting, and the mode that coaxial fitting 6 is connected through a screw thread is fixed in support plate, then passes through welding again
Mode is connected with the input terminal of Wilkinson power divider 7.
It is illustrated in figure 2 the structural schematic diagram of one dimensional linear array, antenna traces are processed as unit of subarray, in figure
Subarray is made of 16 antenna elements, on the support frame 13 that subarray is fixed in support plate after processing by screw 14,
Then one piece is connected to the coaxial fitting of lower end by welding again.
15 be support plate framework in Fig. 3, and one dimensional linear array shown in Fig. 2 is fixed on frame by screw 16, reflecting plate 8
It is equally fixed on frame by screw 17,18 mounting holes for frame.
Fig. 4 is the standing wave pattern in the face H under periodic boundary condition, and antenna is low in 45 ° of the face H scanning range standing internal wave as seen from the figure
In 2.5, in addition to low-frequency range is when high angle scans, standing wave of the antenna in entire working frequency range is below 2.0.
Fig. 5 is the standing wave pattern in the face E under periodic boundary condition, and antenna is in 45 ° of scanning models of the entire working frequency in the face E as seen from the figure
It encloses standing internal wave and is below 2.0.
Fig. 6 and Fig. 7 is respectively the element pattern under 16 × 16 faces array center unit H and the face E different frequency, can by figure
Know the face H and the face E it is main polarization directional diagram it is wider, also relatively flat, the better performances of large-angle scanning, the generally face H ratio E
The element pattern in face is wider, and in addition the cross polarization level of unit is relatively low, illustrates that close coupling array has preferable intersect
Polarization performance.
Claims (7)
1. a kind of closely coupled antennae battle array of broadband and wideangle low section, which is characterized in that array is divided into two large divisions: supporting element and day
Line route；The supporting element is made of support plate, support plate framework, reflecting plate and feed connection；The antenna traces are by Weir
The gloomy power divider of gold, feed Balun, radiation electric flow and frequency-selective surfaces composition；The main structure of antenna traces is by two pieces
Medium copper-clad plate presses, and be divided into four layers: first layer is the line construction layer of top dielectric plate upper surface, and the second layer is upper layer
The line construction layer of dielectric-slab lower surface, third layer are the line construction layer of layer dielectric plate upper surface, and the 4th layer is situated between for lower layer
The line construction layer of scutum lower surface；It is symmetrical irradiation structure that first layer and the 4th layer be upper, and the second layer is hollow plate, in third layer
For power divider and balun；Wherein:
The support plate provides support for antenna traces, and antenna traces are fixed on the frame of support plate by screw, are made into
One sub- array module, multiple such sub-array modules are placed side by side, that is, form the big battle array of antenna of a bidimensional；
The reflecting plate is metal floor, is used for reflection electromagnetic wave, and reflecting plate is fixed together by screw and support plate framework；
The feed connection is coaxial feed port, and feed connection is directly anchored in support plate, coaxial fitting and is fixed on branch
Antenna traces on fagging link together；
The power divider is single order Wilkinson power divider, the input terminal phase with coaxial fitting and power divider
Even, the output end of power divider is connected with the input terminal of balun；
Described feed Balun one end is directly connected with Wilkinson power divider, and the other end is by way of coupling to radiation electric
Flow feed；
The power divider and feed Balun are strip lines configuration, and the floor of two sides is electrically connected with conductive through hole, are formed
Closed cavity body structure；
The radiation electric flow is in the nature to be introduced by way of close coupling between a dipole antenna, with adjacent dipole
One equivalent capacity works in very wide bandwidth for offsetting the inductance introduced by reflecting plate；
The frequency-selective surfaces are rectangle metal strip of the be set with above current sheet, which is equivalent to impedance change
Parallel operation, effect is identical as traditional matched media plate, and in addition frequency-selective surfaces and antenna traces processing are integral.
2. the closely coupled antennae battle array of broadband and wideangle low section according to claim 1, which is characterized in that the feed connection
It is connected by welding with by cutting off the exposed strip line of top dielectric plate, strip line is exactly micro-strip at this time
Line.
3. the closely coupled antennae battle array of broadband and wideangle low section according to claim 1, which is characterized in that the power distribution
Device is the Wilkinson power divider of single order, and the pad for being added in the isolation resistance between two output ports passes through electroplating ventilating hole
Mode guide to first layer, i.e., guided to as the line construction layer (3) of the layer dielectric plate upper surface where power divider route
On the line construction layer (1) of top dielectric plate upper surface.
4. the closely coupled antennae battle array of broadband and wideangle low section according to claim 1, which is characterized in that the reflecting plate with
Support plate separate machined is fixed in braced frame finally by one piece of screw.
5. the closely coupled antennae battle array of broadband and wideangle low section according to claim 1, which is characterized in that the radiation current
Piece uses symmetrical structure, i.e. first layer and the electric current chip architecture on the 4th layer is just the same, in the coupled end degree of lip-rounding with balun
At a structure in parallel, it is electrically connected between first layer and the 4th layer of symmetrical current piece by conductive through hole, it is same adjacent
Current sheet between increase coupling by the way of being directly connected to.
6. the closely coupled antennae battle array of broadband and wideangle low section according to claim 1, which is characterized in that first layer and the 4th
The copper foil of layer is connected to one piece by conductive through hole, provides a closed environment for power divider and balun.
7. the closely coupled antennae battle array of broadband and wideangle low section according to claim 1, which is characterized in that radiating element with from
The structure of frequency-selective surfaces, a quarter of the sizes of frequency-selective surfaces than most high frequency are used by the impedance transformer in space
Wavelength is smaller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821172146.4U CN208522072U (en) | 2018-07-24 | 2018-07-24 | The closely coupled antennae battle array of broadband and wideangle low section |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821172146.4U CN208522072U (en) | 2018-07-24 | 2018-07-24 | The closely coupled antennae battle array of broadband and wideangle low section |
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| CN208522072U true CN208522072U (en) | 2019-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821172146.4U Expired - Fee Related CN208522072U (en) | 2018-07-24 | 2018-07-24 | The closely coupled antennae battle array of broadband and wideangle low section |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110011044A (en) * | 2019-04-15 | 2019-07-12 | 电子科技大学 | Ultralow section close coupling ultra wide band phased array based on magnetic medium type artificial magnetic conductor |
| CN110048221A (en) * | 2019-03-15 | 2019-07-23 | 上海交通大学 | Strip line network low section close coupling ultra wide band array antenna |
| CN110718752A (en) * | 2019-12-12 | 2020-01-21 | 电子科技大学 | Ultra-wideband strong coupling lens antenna based on transceiving structure form |
-
2018
- 2018-07-24 CN CN201821172146.4U patent/CN208522072U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110048221A (en) * | 2019-03-15 | 2019-07-23 | 上海交通大学 | Strip line network low section close coupling ultra wide band array antenna |
| CN110011044A (en) * | 2019-04-15 | 2019-07-12 | 电子科技大学 | Ultralow section close coupling ultra wide band phased array based on magnetic medium type artificial magnetic conductor |
| CN110718752A (en) * | 2019-12-12 | 2020-01-21 | 电子科技大学 | Ultra-wideband strong coupling lens antenna based on transceiving structure form |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190219 Termination date: 20210724 |
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| CF01 | Termination of patent right due to non-payment of annual fee |