CN206236797U - The polarization tracking device of grizzly bar shape linear polarized antenna - Google Patents
The polarization tracking device of grizzly bar shape linear polarized antenna Download PDFInfo
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- CN206236797U CN206236797U CN201621321749.7U CN201621321749U CN206236797U CN 206236797 U CN206236797 U CN 206236797U CN 201621321749 U CN201621321749 U CN 201621321749U CN 206236797 U CN206236797 U CN 206236797U
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Abstract
The utility model discloses the polarization tracking device of grizzly bar shape linear polarized antenna, the polarization tracking device includes at least three-decker identical polarization gate layer, connected by a central shaft between polarization gate layer, every layer of polarization gate layer can rotate around central shaft, and polarization gate layer is made up of the metal band that dielectric support and some light are engraved in dielectric support.The utility model simple structure, stabilization, it is easy to fabricate, minimum need to be by three layers of polarization gate layer, can be achieved with polarization modulation and tracking, avoid traditional polarization tracking body well and accumulate the complicated problem of excessive, equipment, simple structure and effective, and can be fabulous with flat plane antenna it is conformal.
Description
Technical field
The utility model is related to polarization tracking device, and more particularly to one kind can be applied to the generation of plane linear polarized antenna radiating layer
The polarization tracking device of grizzly bar shape linear polarized antenna during rotation.
Background technology
With developing rapidly for satellite mobile communication technology, especially antenna for satellite communication in motion technology, low profile antenna for satellite communication in motion
One of study hotspot of satellite mobile communication technical field is turned into.China, Ku, C-band satellite repeater are linear polarization side
Formula works, and existing linear polarized antenna polarization tracking device mainly has by the way of：(1) duplexer polarization is rotated, is applied to
In parabola antenna, the method is widely used, but complex structure；(2) by orthogonal point of Polarization Technology polarization of two-way,
The method is applied in flat plate array antenna, adds Polarization changer to realize that dual-linear polarization works after antenna feeding network；(3) reflect
Surface antenna linear polarization grid, are applied to double grid reflecting surface, and two kinds of linear polarization modes of antenna are fixed, it is impossible to be applied to the load in motion
The satellite communication of body.
Wire grid polarizer is made up of the thin conductor wire of series of parallel setting.This conductor wire generally uses photoetching
Technique, aperture plate shape is etched into by conductive film；This aperture plate is at 45 ° with the electric field intensity of incidence wave, and aperture plate plane is passed with incidence wave
Broadcast direction vertical；In this case, incidence wave is broken down into two orthogonal components by aperture plate, an electric field component E with
Grid mesh line is parallel, and E is vertical with grid mesh line for another component；Because almost not worked when electric field is vertical with grid mesh line.Wire grid pole
Change device is generally used for the conversion from linear polarization to circular polarisation, and this circular polarizer can be applied to parabola antenna；But for some
Linear polarization application antenna, radiation port face is likely to occur change in location, polarization of electromagnetic wave is also changed therewith, this
In the case of, to realize that dual-linear polarization works, it is necessary to change polarised direction outside radiation port face.
In some linear polarized antenna applications, because the direction in radiation port face is not fixed, and the polarization of linear polarized antenna
Related to radiation aperture position, this direction of an electric field for resulting in radiation port face cannot meet required polarised direction；In feed
In system, aerial radiation and the polarization matching for receiving are realized, it is typically more difficult；In this case, can only select from radiation
The polarization matching of antenna is realized outside mouth face and is tracked.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of simple structure, stabilization, it is easy to fabricate, compared to
Existing polarization tracking device cannot be applied to the polarization tracking device of the grizzly bar shape linear polarized antenna of plane linear polarized antenna.
To reach above-mentioned purpose, the technical solution of the utility model is as follows：
The polarization tracking device of grizzly bar shape linear polarized antenna, the polarization tracking device polarizes including at least three-decker identical
Gate layer, is connected between polarization gate layer by a central shaft, and every layer of polarization gate layer can rotate around central shaft, and polarization gate layer is by medium
Support and some light are engraved on the metal band composition in dielectric support.
In one embodiment of the present utility model, the spacing d per between two adjacent polarization gate layer0Equal to λ
g/4。
In one embodiment of the present utility model, the metal band spaced set, per two neighboring metal band
Between spacing P be λ g/16.
In one embodiment of the present utility model, the metal band is aluminium foil or Copper Foil.
In one embodiment of the present utility model, 3 times of thickness more than skin depth δ of the metal band；
In formula, f is frequency, unit GHz；σ is electrical conductivity, unit MS/m；δ is in units of um.
In one embodiment of the present utility model, the width W of the metal band is 0.3P.
In one embodiment of the present utility model, the polarization gate layer is three layers, including the first polarization gate layer, the second pole
Change gate layer and the 3rd polarization gate layer；The first polarization gate layer is matched with aerial radiation polarization, it is allowed to which electromagnetic wave all passes through,
The 3rd polarization gate layer is vertical with required direction of an electric field, it is ensured that polarization of the polarization needed for, the second polarization grid
Layer is regulating course, and for matching standing wave and realizing lower cross polarization, its grizzly bar direction takes the first, the 3rd polarization gate layer electric field
The 1/2 of differential seat angle.
By above-mentioned technical proposal, the beneficial effects of the utility model are：
First, the polarization tracking device downlink transfer loss is small, for the application that the transmitting-receiving of Ku frequency ranges is separate, polarization grid
Insertion loss is respectively less than 0.2dB.
Second, the up reflection loss of polarization tracking device is small, for the application that the transmitting-receiving of Ku frequency ranges is separate, polarization grid
Standing-wave ratio is respectively less than 1.1.
3rd, the polarization tracking device cross-polarization performance is good, for not like-polarized working method, can generally realize
The cross polarization of more than 30dB.
4th, the polarization tracking device polarization mode is simple, minimum only to can be achieved with pole by three-layer metal aperture plate
Change adjustment and track, traditional polarization problem that follower volume is excessive, equipment is complicated is avoided well, method simply has
Effect, and can be fabulous with flat plane antenna it is conformal.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the utility model embodiment 1；
Fig. 2 is the top view of the utility model polarization gate layer；
Numeral and the corresponding component title represented by letter in figure：
10th, the first polarization polarization polarization of gate layer the 30, the 3rd of gate layer 20, second gate layer 40, central shaft 50, dielectric support
60th, metal band.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, under
Face combines and is specifically illustrating, and the utility model is expanded on further.
Embodiment 1
Referring to shown in Fig. 1 and Fig. 2, the utility model discloses the polarization tracking device of grizzly bar shape linear polarized antenna, polarization with
Track device includes at least three-decker identical polarization gate layer, is connected by a central shaft between polarization gate layer, every layer of polarization gate layer
Can belt drive rotated around central shaft, polarization gate layer is engraved on bonding jumper in dielectric support by dielectric support 50 and some light
Band 60 is constituted；The utility model polarization gate layer is preferably three layers, including the first polarization gate layer 10, second polarization gate layer 20 and the
Three polarization gate layer 30, the first polarization gate layer, the second polarization gate layer and the 3rd polarization gate layer are connected by central shaft 40；It is specific real
During existing polarization tracking, by taking transmitting antenna as an example, the first polarization gate layer is matched with aerial radiation polarization, i.e., vertical in incident electric fields,
Electromagnetic wave is allowed all to pass through, the 3rd polarization gate layer is vertical with required direction of an electric field, it is ensured that polarization of the polarization needed for,
Second polarization gate layer is regulating course, and for matching standing wave and realizing lower cross polarization, its grizzly bar direction takes the first, the 3rd pole
Change the 1/2 of gate layer electric field angle difference, if polarization gate layer is more Rotating fields, its grizzly bar direction gradual change successively, until completing to polarize
Adjustment.
The parameter value of the utility model wire grid polarization tracking device determines according to following principle；
The size of the first polarization gate layer, the second polarization gate layer and the 3rd polarization gate layer is true according to aerial radiation mouthful face size
It is fixed, it is ensured that it can cover aerial radiation mouthful face.
Dielectric support is minimal thickness, there is good strength characteristics, and its permittivity εrIt is low to ensure close to 1
Insertion loss.
Between between the first polarization polarization polarization polarization gate layer 30 of gate layer 20 and the 3rd of gate layer 20, second of gate layer 10 and second
Away from d0Equal to λ g/4, λ g are wavelength；So, the electric field between any polarization gate layer is elliptic polarization, in the first, the 3rd pole
It is linear polarization outside change gate layer.
Above-mentioned metal band spaced set, the spacing P between every two neighboring metal band is that λ g/16, λ g are wavelength.
Metal band should as far as possible get over Bao Yuehao；In the process of polarization gate layer, metal band is by medium branch
Support the certain thickness Copper Foil of photomask surface (or aluminium foil) to be formed, due to the expansion coefficient of copper (or aluminium) and differing for Supporting Media
Sample, therefore Copper Foil (or aluminium foil) thickness must be as small as possible, to reduce thermal deformation and the inhomogeneities of dielectric material, the opposing party
Face, if metal band it is excessively thin can also influence polarize grid reflection loss, consider, be usually taken to be 3 times of skin depth δ with
On；
In formula, f is frequency, unit GHz；σ is electrical conductivity, unit MS/m；δ is in units of um.
The width W value principles of metal band are 0.3P, in the case where grill width is less than 1mm, polarizer performance pair
Grill width is insensitive, value can be limited according to actual process, because cross polarization suppression and insertion loss are with the reduction of W/P
And be obviously improved, metal band should be as more thin better as possible.
The transmitting-receiving frequency range polarization tracking device of Ku frequency ranges of the present utility model, is carried out in electromagnetic simulation software CST respectively
Emulation, also machined mock-up, and emulation and measured result show：In 12GHz~13GHz, 14GHz~14.5GHz frequency ranges, its
Port voltage standing-wave ratio is respectively less than 1.1dB, and insertion loss is less than 0.2dB, and main shaft cross polarization isolation is more than 30dB；It can be seen that,
Linear polarized antenna polarization tracking device of the present utility model, for the antenna that Ku receives and dispatches different faces, excellent electrical properties, tracking accuracy
Height, polarization tracking only needs to rotation of each grizzly bar layer in one-dimensional plane, and polarization tracking mode is simple.
General principle of the present utility model and principal character and advantage of the present utility model has been shown and described above.One's own profession
The technical staff of industry it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, on the premise of the utility model spirit and scope are not departed from, the utility model is also
Various changes and modifications are had, these changes and improvements are both fallen within the range of claimed the utility model.The utility model
Claimed scope is by appending claims and its equivalent thereof.
Claims (7)
1. the polarization tracking device of grizzly bar shape linear polarized antenna, it is characterised in that the polarization tracking device includes at least three-decker
Identical polarization gate layer, is connected between polarization gate layer by a central shaft, and every layer of polarization gate layer can rotate around central shaft, polarize
Gate layer is made up of the metal band that dielectric support and some light are engraved in dielectric support.
2. the polarization tracking device of grizzly bar shape linear polarized antenna according to claim 1, it is characterised in that described per adjacent
Spacing d between two polarization gate layer0Equal to λ g/4.
3. the polarization tracking device of grizzly bar shape linear polarized antenna according to claim 1, it is characterised in that the metal band
Spaced set, the spacing P between every two neighboring metal band is λ g/16.
4. the polarization tracking device of the grizzly bar shape linear polarized antenna according to claim 1 or 3, it is characterised in that the metal
Band is aluminium foil or Copper Foil.
5. the polarization tracking device of grizzly bar shape linear polarized antenna according to claim 4, it is characterised in that the metal band
Thickness more than 3 times of skin depth δ；
In formula, f is frequency, unit GHz；σ is electrical conductivity, unit MS/m；δ is in units of um.
6. the polarization tracking device of grizzly bar shape linear polarized antenna according to claim 4, it is characterised in that the metal band
Width W be 0.3P.
7. the polarization tracking device of grizzly bar shape linear polarized antenna according to claim 1, it is characterised in that the polarization gate layer
It is three layers, including the first polarization gate layer, the second polarization gate layer and the 3rd polarization gate layer；The first polarization gate layer and antenna spoke
Incident polarization matching, it is allowed to which electromagnetic wave all passes through, the 3rd polarization gate layer is vertical with required direction of an electric field, it is ensured that pole-changing
Change to required polarization, the second polarization gate layer is regulating course, for matching standing wave and realizing lower cross polarization, its grid
Article direction takes the 1/2 of the first, the 3rd polarization gate layer electric field angle difference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621321749.7U CN206236797U (en) | 2016-12-05 | 2016-12-05 | The polarization tracking device of grizzly bar shape linear polarized antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621321749.7U CN206236797U (en) | 2016-12-05 | 2016-12-05 | The polarization tracking device of grizzly bar shape linear polarized antenna |
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| CN206236797U true CN206236797U (en) | 2017-06-09 |
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ID=58977830
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| CN201621321749.7U Active CN206236797U (en) | 2016-12-05 | 2016-12-05 | The polarization tracking device of grizzly bar shape linear polarized antenna |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511902A (en) * | 2018-04-18 | 2018-09-07 | 京东方科技集团股份有限公司 | Antenna and electronic device |
| CN109361066A (en) * | 2018-11-15 | 2019-02-19 | 北京遥感设备研究所 | A kind of polarization rotary system of all-metal structure |
| CN113178706A (en) * | 2021-04-19 | 2021-07-27 | 北京邮电大学 | Polar modulation antenna and communication device |
| CN113224546A (en) * | 2021-04-19 | 2021-08-06 | 北京邮电大学 | Polar modulator |
-
2016
- 2016-12-05 CN CN201621321749.7U patent/CN206236797U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511902A (en) * | 2018-04-18 | 2018-09-07 | 京东方科技集团股份有限公司 | Antenna and electronic device |
| CN108511902B (en) * | 2018-04-18 | 2020-02-21 | 京东方科技集团股份有限公司 | Antenna and electronic device |
| US10992051B2 (en) | 2018-04-18 | 2021-04-27 | Boe Technology Group Co., Ltd. | Antenna and electronic device |
| CN109361066A (en) * | 2018-11-15 | 2019-02-19 | 北京遥感设备研究所 | A kind of polarization rotary system of all-metal structure |
| CN113178706A (en) * | 2021-04-19 | 2021-07-27 | 北京邮电大学 | Polar modulation antenna and communication device |
| CN113224546A (en) * | 2021-04-19 | 2021-08-06 | 北京邮电大学 | Polar modulator |
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