CN208580844U - A kind of circular polarized antenna - Google Patents
A kind of circular polarized antenna Download PDFInfo
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- CN208580844U CN208580844U CN201821350817.1U CN201821350817U CN208580844U CN 208580844 U CN208580844 U CN 208580844U CN 201821350817 U CN201821350817 U CN 201821350817U CN 208580844 U CN208580844 U CN 208580844U
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- radiating element
- flat segments
- reflecting plate
- polarized antenna
- circular polarized
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Abstract
The utility model discloses a kind of circular polarized antenna, radiating element, for emitting the electromagnetic wave of circular polarisation；Reflecting plate is set to the side of the radiating element；And coupled feed sheet, it is set between the reflecting plate and the radiating element, and have gap between the reflecting plate and the radiating element, to the radiating element couple feed；The coupled feed sheet includes the first flat segments and the second flat segments and the linkage section between first flat segments and second flat segments, first flat segments are arranged close to radiating element, second flat segments are electrically connected with the radio frequency connector of the circular polarized antenna, and are arranged close to the reflecting plate.Circular polarized antenna provided by the utility model has the advantages that work belt is wide.
Description
Technical field
The utility model relates to antenna feed electro-technical field, in particular to a kind of circular polarized antenna.
Background technique
In the Internet of Things communications field, multipath effect and polarization mismatch all seriously affect communication efficiency and communication intelligence quality,
How to reduce multipath effect and polarization mismatch has been a hot spot of research problem, circular polarized antenna is as a solution, energy
Enough make multipath effect and polarization adaptation is available is effectively reduced.
Since the feeding point of traditional circular polarized antenna is direct-connected with radiating element, result in working band,
Impedance bandwidth and axial ratio bandwidth are relatively narrow.Occurs a kind of circular polarized antenna of couple feed on the market thus, by coaxial electrical
An affixed coupling piece, has spacing between the coupling piece and radiating element on cable, in Antenna Operation, using the mode of coupling
For radiating element feed.For the directionality and launch angle of the antenna of guarantee, needed between the reflecting plate and radiating element in antenna
It is spaced a distance.In antenna adjustment, if feed tab can be properly increased the work belt of antenna close to radiating element
Width, but the impedance of antenna is not easy to match；If being easy to debug antenna impedance, but the work of antenna by feed tab close to reflecting plate
Bandwidth can narrow.Since impedance mismatching will increase aerial loss, antenna gain, therefore the work of existing circular polarized antenna are reduced
Bandwidth is relatively narrow.
Utility model content
The main purpose of the utility model is to propose a kind of circular polarized antenna, it is intended to solve existing Antenna Operation narrow bandwidth
The technical issues of.
To achieve the above object, the utility model proposes circular polarized antenna, including radiating element, for emitting circular polarisation
Electromagnetic wave；Reflecting plate is set to the side of the radiating element；And coupled feed sheet, it is set to the reflecting plate and institute
It states between radiating element, and has gap between the reflecting plate and the radiating element, to be coupled to the radiating element
Feed；The coupled feed sheet includes the first flat segments with the second flat segments and set on first flat segments and described second
Linkage section between flat segments, first flat segments are arranged close to radiating element, second flat segments and the circular polarisation
The radio frequency connector of antenna is electrically connected, and is arranged close to the reflecting plate.
Optionally, 3mm-6mm is spaced between first flat segments and the radiating element.
Optionally, first flat segments extend from the linkage section to the direction at the radiating element center.
Optionally, the reflecting plate is equipped with several first insulating supporting columns, and the first insulating supporting column is from described anti-
It penetrates plate to extend to the direction of first flat segments, to support first flat segments.
Optionally, the reflecting plate is equipped with several second insulating supporting columns, and the second insulating supporting column is from described anti-
It penetrates plate to extend to the direction of the radiating element, to support the radiating element.
Optionally, 1mm-3mm is spaced between second flat segments and the radiating element.
Optionally, the center needle of the radio frequency connector is inserted in the reflecting plate, and to where the radiating element
Side protrusion, second flat segments are fixed on the center needle.
Optionally, the radiating element is the half-wave dipole with corner cut, and the half-wave dipole is parallel to the reflecting plate.
Optionally, the circular polarized antenna further include insulation shell, the shell to be provide with the radiating element and
The reflecting plate.
Technical solutions of the utility model are made by the way that coupled feed sheet is set to the mode between radiating element and reflecting plate
Obtain coupled feed sheet is radiating element feed in a coupled manner, and inhibits the generation of the surface wave of reflecting plate, to widen
The impedance bandwidth and axial ratio bandwidth of circular polarized antenna, so that antenna obtains wider bandwidth of operation, simultaneously as couple feed
First flat segments of piece are arranged close to radiating element, the feeding point of coupled feed sheet can be made close to radiating element in this way, to increase
Strong feed effect, so that antenna obtains broader bandwidth of operation, and the second flat segments are arranged close to reflecting plate, can reduce coupling
The electricity-linkingup point of feed tab is interfered caused by radiating element, is easy to debug the impedance matching of antenna, reduces the loss of antenna, is increased
The strong gain of antenna.
Detailed description of the invention
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
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the assembling schematic diagram of one embodiment of the utility model circular polarized antenna；
Fig. 2 is partial structure diagram in embodiment illustrated in fig. 1；
Fig. 3 is the overall structure diagram of embodiment illustrated in fig. 1.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 1 | Radiating element | 2 | Reflecting plate |
| 3 | Coupled feed sheet | 31 | First flat segments |
| 32 | Second flat segments | 33 | Linkage section |
| 4 | First insulating supporting column | 5 | Radio frequency connector |
| 51 | Center needle | 6 | Second insulating supporting column |
| 7 | Shell | 71 | Self-tapping screw |
| 8 | Fastener | 81 | Threaded post |
| 82 | Nut | 83 | L-type presss from both sides code |
| 84 | U-shaped folder code | 85 | H-type presss from both sides code |
| 9 | Pole |
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
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
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
It is to be appreciated that if related in the utility model embodiment directionality instruction (such as upper and lower, left and right, it is preceding,
Afterwards ...), then directionality instruction is only used for explaining opposite between each component under a certain particular pose (as shown in the picture)
Positional relationship, motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, if relating to the description of " first ", " second " etc. in the utility model embodiment, " first ", " the
Two " etc. description is used for description purposes only, and is not understood to indicate or imply its relative importance or is implicitly indicated meaning
The quantity of the technical characteristic shown." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one
A this feature.In addition, the meaning of the "and/or" occurred in full text is, and including three schemes arranged side by side, by taking " A and/or B " as an example,
The scheme met simultaneously including A scheme or B scheme or A and B.In addition, the technical solution between each embodiment can be mutual
In conjunction with, but must be based on can be realized by those of ordinary skill in the art, when mutual lance occurs in the combination of technical solution
Shield or cannot achieve when, will be understood that the combination of this technical solution is not present, also not in the protection scope of the requires of the utility model
Within.
The utility model proposes a kind of circular polarized antennas.
In the utility model embodiment, as shown in Figure 1, the circular polarized antenna includes: radiating element 1, reflecting plate 2 and coupling
Close feed tab 3.Wherein for radiating element 1 for emitting or receiving circular polarisation electromagnetic wave, reflecting plate 2 is set to the one of radiating element 1
Side, for reflecting the electromagnetic wave of 1 side of radiating element, to improve the directional gain of antenna.Coupled feed sheet 3 is set to instead
It penetrates between plate 2 and radiating element 1, and has gap between reflecting plate 2 and radiating element 1, for carrying out coupling to radiating element 1
Feed is closed, to enhance the impedance bandwidth and axial ratio bandwidth of antenna.
Specifically, which further includes a radio frequency connector 5, which is electrically connected with coaxial cable,
It is electrically connected simultaneously with coupled feed sheet 3, to power to coupled feed sheet 3, specifically, in the present embodiment, radio frequency connector 5
50 ohm connector of model N-K type, in other embodiments, the connector of other models can also be used in radio frequency connector 5, even
The resistance value for connecing device can also accordingly change with the change of antenna operating band.Further, as shown in Fig. 2, coupled feed sheet 3 is wrapped
The first flat segments 31, the second flat segments 32 and linkage section 33 are included, wherein the first flat segments 31 are arranged close to radiating element 1, second
Flat segments 32 are electrically connected with radio frequency connector 5, and are arranged close to reflecting plate 2, and therefore, the first flat segments 31 can be considered couple feed
The feeding point of piece 3, and the second flat segments 32 can be considered the electricity-linkingup point of coupled feed sheet 3.Linkage section 33 is set to the first flat segments
31 and second between flat segments 32, to connect the first flat segments 31 and the second flat segments 32.
Technical solutions of the utility model pass through the side that is set to coupled feed sheet 3 between radiating element 1 and reflecting plate 2
Formula so that coupled feed sheet 3 is fed in a coupled manner for radiating element 1, and inhibits the generation of the surface wave of reflecting plate 2,
To widen the impedance bandwidth and axial ratio bandwidth of circular polarized antenna, so that antenna obtains wider bandwidth of operation, simultaneously as
First flat segments 31 of coupled feed sheet 3 are arranged close to radiating element 1, the feeding point of coupled feed sheet 3 can be made close to spoke in this way
Unit 1 is penetrated, to enhance feed effect, so that antenna obtains broader bandwidth of operation, and the second flat segments 32 are close to reflecting plate 2
Setting, can reduce the electricity-linkingup point of coupled feed sheet 3 to interference caused by radiating element 1, be easy to debug the impedance matching of antenna,
The loss for reducing antenna enhances the gain of antenna.
Further, in conjunction with shown in Fig. 1 and Fig. 2, the radiating element 1 in the present embodiment is half-wave dipole, the half-wave dipole
With corner cut, and it is parallel to the setting of the first flat segments 31.By the way that corner cut is arranged on half-wave dipole, changeable Electromagnetic Wave Propagation goes out
The horizontal component and vertical component in the direction and electric field gone, when 90 ° or 270 ° of phase phase difference, available circular polarisation, at this
Entelechy in embodiment turns to right-handed circular polarization.
By way of the corner cut on half-wave dipole, can be changed electric field intensity endpoint the direction of motion, so as to compared with
Circular polarisation is realized for simple method and structure, to reduce the manufacturing cost of antenna, reduce the volume of antenna.
It should be noted that in other embodiments, electromagnetic wave can also be left-hand circular polarization.And the radiating element of the application
1 is without being limited thereto, in other embodiments, oscillator can also for circle-ring vibrator, crossed dipole, four arm helicons etc., as long as
Radiating element 1 is obtained electric by way of coupling.
Further, the working band of circular polarized antenna provided herein is 890MHz-960MHz, the i.e. band of antenna
Width is 70MHz, and since conventional circular polarized antenna axial ratio bandwidth and impedance bandwidth is relatively narrow, bandwidth of operation is also relatively
It is narrow.Compared with conventional circular polarized antenna, circular polarized antenna provided herein, bandwidth of operation is greatly increased
Greatly.Specifically, the circular polarized antenna in the present embodiment, working frequency 902MHz-928MHz, in the frequency band, antenna can
Obtain maximum gain.
Further, circular polarized antenna provided by the present embodiment further includes the shell 7 of an insulation, and the shell 7 is to cover
Set on radiating element 1 and reflecting plate 2.Protection can be provided for radiating element 1, reflecting plate 2 and coupled feed sheet 3 by the shell 7,
To reduce the loss to antenna such as outer bound component such as rainwater, sunlight, thus the service life of extension antenna.
Specifically, in the present embodiment, which is made of ABS, and ABS has good plasticity, and tough and tensile, matter
Firmly, corrosion-resistant, it is good 7 material of shell.In other embodiments, shell 7 can also be made of insulating materials such as PP, PE.
Specifically, the side of shell 7 is formed with accommodating cavity, and radiating element 1 is placed in the accommodating cavity, the cavity wall of accommodating cavity
End and the periphery of reflecting plate 2 abut against, and are fixed on reflecting plate 2 by self-tapping screw 71, and convenient for disassembly and assembly, the processing is simple.
Further, 3mm-6mm is spaced between above-mentioned first flat segments 31 and radiating element 1.
First flat segments 31 are spaced in 3mm-6mm with radiating element 1, and radiating element 1 can be made to obtain optimal couple feed
Effect, so that the gain of antenna maximizes.When the first flat segments 31 and the spacing of radiating element 1 are greater than 6mm, coupled feed sheet
3 can weaken with the coupling ability of radiating element 1, to reduce the electric field of antenna, and lead to polarization adaptation, influence the effect of antenna
Rate；And the spacing between the first flat segments 31 and radiating element 1 is less than 3mm and radiation electric cell surface can then be made to generate higher post
Raw radiation, to interfere with each other with electromagnetic wave, influences the directional gain of antenna.Therefore, the first flat segments 31 and radiation are single
It is arranged at intervals on 3mm-6mm between member 1, is conducive to improve antenna gain.
Specifically, in the present embodiment, 4mm is spaced between the first flat segments 31 and half-wave dipole.
Further, the first flat segments 31 extend from linkage section 33 to the direction at 1 center of radiating element.
As the first flat segments 31 extend to the center position of radiating element 1, the impedance matching of antenna can become smaller therewith, have
Conducive to loss of the antenna in transceiving electromagnetic wave is reduced, to improve antenna gain.Meanwhile the feeding point of coupled feed sheet 3 is got over
Close to the central point of radiating element 1, the phase of the directional diagram of antenna more just, and the line of symmetry of lobe of the directional diagram at 3dB
Also closer to greatest irradiation direction, i.e. the symmetry of the directional pattern of antenna is better, can reduce the polarization mismatch of antenna in this way, mentions
The efficiency of high antenna.
Further, reflecting plate 2 is equipped with several first insulating supporting columns 4, the 4 self-reflection plate 2 of the first insulating supporting column
Extend to the direction of the first flat segments 31, to support the first flat segments 31.
Since the first flat segments 31 extend to the center of radiating element 1, i.e. the length of the first flat segments 31 can be increase accordingly,
By the way that the first insulating supporting column 4 is arranged on reflecting plate 2, can play a supporting role to the first flat segments 31, so that first is straight
Spacing between section 31 and radiating element 1 is guaranteed, and improves the stability of Antenna Operation.
Further, in this embodiment reflecting plate 2 on be additionally provided with several second insulating supporting columns 6, this second insulation branch
6 self-reflection plate 2 of dagger extends to the direction of radiating element 1, to support radiating element 1.
Radiating element 1 can be fixed on reflecting plate 2 by the second insulating supporting column 6, so that reflecting plate 2 and radiating element
1 is maintained at the distance of reservation, to make the directionality for the electromagnetic wave of antenna launched keep certain, to improve Antenna Operation
Stability.
Specifically, in the present embodiment, the first insulating supporting column 4 and the second insulating supporting column 6 are nylon support column.?
In other embodiments, the first insulating supporting column 4 can also be made with the second insulating supporting column 6 of other insulating materials, as ABS, PP,
The insulating materials such as PE.
Further, 1mm-3mm is spaced between above-mentioned second flat segments 32 and reflecting plate 2.
Effect of distance between second flat segments 32 and reflecting plate 2 impedance matching of antenna, when the second flat segments 32 with
When spacing between reflecting plate 2 is less than 1mm, it be easy to cause the mistake between coupled feed sheet 3 and reflecting plate 2 to touch, to make antenna
Short circuit leads to the disabler of antenna；And the spacing between the second flat segments 32 and reflecting plate 2 be greater than 3mm it will cause antennas
Input impedance it is excessive, and be difficult to be matched with the impedance of radio frequency connector 5, cause the impedance mismatching of antenna, influence antenna
Efficiency.Therefore, it sets the spacing between the second flat segments 32 and reflecting plate 2 between 1mm-3mm, is conducive to debug antenna,
So that Antenna Impedance Matching.
Specifically, in the present embodiment, 2mm is spaced between the second flat segments 32 and reflecting plate 2.
Further, the center needle 51 of above-mentioned radio frequency connector 5 is inserted in reflecting plate 2, and to where radiating element 1
Side protrusion, the second flat segments 32 are fixed on the center needle 51.
By the way that the second flat segments 32 are fixed on center needle 51, so that between the second flat segments 32 and reflecting plate 2
In the range of being maintained within reservation, and then improve the stability of Antenna Operation.Specifically, in the present embodiment, second
Flat segments 32 are fixed on by welding on center needle 51, fix the second flat segments 32 in a welding manner, can guaranteed
While second 32 positional stability of flat segments, make to keep good electrical property between the second flat segments 32 and center needle 51.
Further, radiating element 1 has a coupling surface, which is parallel to the first flat segments 31, above-mentioned linkage section
33 extend perpendicularly to the first flat segments 31.In the present embodiment, which is that half-wave dipole is opposite with reflecting plate 2
On one side.
Since coupled feed sheet 3 is the feed of radiating element 1, i.e. the first flat segments 31 and radiating element by way of coupling
Capacitive couplings feed is formd between 1, the coupling surface of radiating element 1 is parallel to the setting of the first flat segments 31, can be utmostly
Increase coupling area, to improve feed effect.Linkage section 33 is set perpendicularly to the first flat segments 31, can avoid feeding
Capacitor is formed between process middle connecting segment 33 and radiating element 1, reduces interference of the additional radiation to antenna, enhances the steady of antenna
It is qualitative.Meanwhile perpendicular to the first flat segments 31 setting linkage section 33, it is also relatively simple in processing technology, save production
Cost.Certainly, in other implementations, connecting pin may be alternatively provided as skewed, arc-shaped etc..
Further, in the present embodiment, coupled feed sheet 3 is by the first flat segments 31, the second flat segments 32 and linkage section
33 are made of one piece.
Integrally formed technique can simplify the manufacturing process of coupled feed sheet 3, reduce cost of manufacture, and make coupled feed sheet
3 each section resistance value is consistent, and then reduces loss of the electric current in coupled feed sheet 3, guarantees the stability of feed.
Further, coupled feed sheet 3 is made of aluminum.Aluminium has good easy plasticity and electric conductivity, and raw material are easy to
It obtains, the coupled feed sheet 3 being formed from aluminium can reduce the cost of manufacture of antenna while assurance function.Specifically, exist
In the present embodiment, it is a kind of most widely used rustproof aluminum alloy that 5052 aluminium of model of aluminium, 5052 aluminium, which are AL-Mg system alloy aluminum, this
The intensity of alloy is high, especially has fatigue resistance, plasticity and corrosion resistance are high, and weldability is good.
Specifically, in the present embodiment, half-wave dipole and reflecting plate 2 are made of 5052 aluminium.
In conjunction with shown in Fig. 1 and Fig. 3, in this embodiment, which is installed on one armful by the way that fastener 8 is detachable
On bar 9, with transceiving electromagnetic wave.Fastener 8 includes that threaded post 81, nut 82, L-type folder code 83, U-shaped folder code 84 and H-type press from both sides code 85.
Wherein threaded post 81 is set to the side that reflecting plate 2 deviates from radiating element 1, by the cooperation of threaded post 81 and nut 82, by L-type
Folder code 83 is fixed on one side on reflecting plate 2, and the another side of L-type folder code 83 is fixed by nut 82 and 84 phase of U-shaped folder code, U-shaped
Folder code 84 is then fixed on pole 9.Due to the setting cylindrical of pole 9, is pressed from both sides in L-type and be additionally provided with H-type between code 83 and pole 9
Code 85 is pressed from both sides, to improve stability fixed between L-type folder code 83 and pole 9.It, can be free by L-type, H-type, U-shaped three kinds of folders code
Height and angle of the antenna on pole 9 are adjusted, to adapt to different working environments.
The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model,
It is all under the inventive concept of the utility model, equivalent structure made based on the specification and figures of the utility model becomes
It changes, or directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.
Claims (10)
1. a kind of circular polarized antenna characterized by comprising
Radiating element, for emitting the electromagnetic wave of circular polarisation；
Reflecting plate is set to the side of the radiating element；And
Coupled feed sheet is set between the reflecting plate and the radiating element, and single with the reflecting plate and the radiation
There is gap between member, to the radiating element couple feed；The coupled feed sheet includes that the first flat segments and second are flat
Straight section and the linkage section between first flat segments and second flat segments, first flat segments are close to radiation
Unit setting, second flat segments are electrically connected with the radio frequency connector of the circular polarized antenna, and are set close to the reflecting plate
It sets.
2. circular polarized antenna as described in claim 1, which is characterized in that between first flat segments and the radiating element
Every 3mm-6mm.
3. circular polarized antenna as claimed in claim 2, which is characterized in that first flat segments are from the linkage section to described
The direction at radiating element center extends.
4. circular polarized antenna as described in claim 1, which is characterized in that the reflecting plate is equipped with several first insulating supportings
Column, the first insulating supporting column extend from the reflecting plate to the direction of first flat segments, described first flat to support
Straight section.
5. circular polarized antenna as described in claim 1, which is characterized in that the reflecting plate is equipped with several second insulating supportings
Column, the second insulating supporting column extends from the reflecting plate to the direction of the radiating element, to support the radiating element.
6. circular polarized antenna as described in claim 1, which is characterized in that between second flat segments and the reflecting plate
Every 1mm-3mm.
7. circular polarized antenna as described in claim 1, which is characterized in that the center needle of the radio frequency connector is inserted in described
It in reflecting plate, and is protruded to the radiating element side, second flat segments are fixed on the center needle.
8. circular polarized antenna as described in claim 1, which is characterized in that the radiating element has a coupling surface, the coupling
Conjunction face is parallel to first flat segments；The linkage section extends perpendicularly to first flat segments.
9. circular polarized antenna as described in claim 1, which is characterized in that the radiating element is the half-wave vibration with corner cut
Son, the half-wave dipole are parallel to the reflecting plate.
10. the circular polarized antenna as described in any one of claims 1 to 9, which is characterized in that the circular polarized antenna further includes exhausted
The shell of edge, the shell is to be provide with the radiating element and the reflecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821350817.1U CN208580844U (en) | 2018-08-21 | 2018-08-21 | A kind of circular polarized antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821350817.1U CN208580844U (en) | 2018-08-21 | 2018-08-21 | A kind of circular polarized antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208580844U true CN208580844U (en) | 2019-03-05 |
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ID=65512468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821350817.1U Active CN208580844U (en) | 2018-08-21 | 2018-08-21 | A kind of circular polarized antenna |
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| Country | Link |
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| CN (1) | CN208580844U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115441206A (en) * | 2022-09-28 | 2022-12-06 | 珠海中科慧智科技有限公司 | Lens antenna |
-
2018
- 2018-08-21 CN CN201821350817.1U patent/CN208580844U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115441206A (en) * | 2022-09-28 | 2022-12-06 | 珠海中科慧智科技有限公司 | Lens antenna |
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