CN113224546A - Polar modulator - Google Patents
Polar modulator Download PDFInfo
- Publication number
- CN113224546A CN113224546A CN202110417557.5A CN202110417557A CN113224546A CN 113224546 A CN113224546 A CN 113224546A CN 202110417557 A CN202110417557 A CN 202110417557A CN 113224546 A CN113224546 A CN 113224546A
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- grid structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
- H01Q15/242—Polarisation converters
- H01Q15/244—Polarisation converters converting a linear polarised wave into a circular polarised wave
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
- H01Q15/242—Polarisation converters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
- H01Q15/242—Polarisation converters
- H01Q15/246—Polarisation converters rotating the plane of polarisation of a linear polarised wave
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Abstract
The disclosed embodiments provide a polar modulator. The polar modulator includes: a support; a first dielectric wire grid structure fixed to the holder, the first dielectric wire grid structure having a first incident side and a first exit side, the first dielectric wire grid structure being configured to convert a first linear polarized wave incident from the first incident side into a circularly polarized wave exiting from the first exit side; and a second dielectric wire grid structure having a second incident side and a second exit side, the second incident side facing the first exit side, the second dielectric wire grid structure being rotatably connected to the support, the second dielectric wire grid structure being configured to convert circularly polarized waves incident from the second incident side into second linearly polarized waves exiting from the second exit side. The polarization modulator provided by the embodiment of the disclosure can realize polarization modulation on electromagnetic wave signals, so that the polarization direction of the obtained electromagnetic wave signals meets the requirements.
Description
Technical Field
The present disclosure relates to the field of electromagnetic signal modulation technology, and in particular, to a polar modulator.
Background
In the electromagnetic wave signal modulation technology, attention is often paid only to amplitude and phase information of an electromagnetic wave signal, and attention is rarely paid to polarization information of the electromagnetic wave signal.
How to perform polarization modulation on an electromagnetic wave signal so that the polarization direction of the obtained electromagnetic wave signal meets the requirement is a technical problem to be solved urgently at present.
Disclosure of Invention
An object of the embodiments of the present disclosure is to provide a polarization modulator to implement polarization modulation on an electromagnetic wave signal, so that the polarization direction of the obtained electromagnetic wave signal meets the requirement. The specific technical scheme is as follows:
the disclosed embodiment provides a polar modulator, including:
a support;
a first dielectric wire grid structure fixed to the support, the first dielectric wire grid structure having a first incident side and a first exit side, the first dielectric wire grid structure being configured to convert a first linearly polarized wave incident from the first incident side into a circularly polarized wave exiting from the first exit side;
a second dielectric wire grid structure having a second incident side and a second exit side, the second incident side facing the first exit side, the second dielectric wire grid structure being rotatably connected to the support, the second dielectric wire grid structure being configured to convert circularly polarized waves incident from the second incident side into second linearly polarized waves exiting from the second exit side.
The polarization modulator provided by the embodiment of the disclosure comprises a support, a first dielectric wire grid structure and a second dielectric wire grid structure, wherein the first dielectric wire grid structure is provided with a first incidence side and a first emergence side, so that a first linear polarization wave incident from the first incidence side can be converted into a circularly polarized wave and can be emitted from the first emergence side. The second incident side of the second dielectric wire grid structure faces the first emitting side, so that the circularly polarized wave emitted from the first emitting side can be received, and the circularly polarized wave can be converted into a second linearly polarized wave to be emitted from the second emitting side. The second dielectric wire grid structure is rotatably connected to the bracket, the polarization direction of the second linear polarized wave emitted from the second emitting side of the second dielectric wire grid structure is related to the rotation angle of the second dielectric wire grid on the bracket, and the rotation angle of the second dielectric wire grid structure is adjustable due to the fact that the second dielectric wire grid structure is rotatably connected to the bracket, so that the second linear polarized wave meeting the requirement of the expected direction can be modulated in a mode of adjusting the rotation angle of the second dielectric wire grid structure. Therefore, the polarization modulation of the electromagnetic wave signal can be realized by the embodiment of the disclosure, so that the polarization direction of the obtained electromagnetic wave signal meets the requirement.
In some embodiments, the polar modulator further comprises a wave filter grid rotatably connected to the support, the wave filter grid having a third incident side and a third exit side, the third incident side facing the second exit side, the wave filter grid being configured to filter the second linearly polarized wave to filter out clutter outside the predetermined polarization direction.
In some embodiments, the centers of the first dielectric wire grid structure, the second dielectric wire grid structure and the wave-filtering grid are located on the same straight line.
In some embodiments, the polar modulator further comprises a driving device connected to the second dielectric wire grid structure to drive the second dielectric wire grid structure to rotate relative to the support.
In some embodiments, the driving device is further connected with the wave-filtering grid to drive the wave-filtering grid to rotate relative to the support in a manner synchronized with the second dielectric wire grid structure.
In some embodiments, the first dielectric wire grid structure includes a first dielectric ring and a plurality of first metal grid bars disposed inside the first dielectric ring, the plurality of first metal grid bars being disposed in parallel and spaced apart.
In some embodiments, the first metal grid is at an angle of 45 ° or 135 ° to the horizontal.
In some embodiments, the second dielectric wire grid structure includes a second dielectric ring and a plurality of second metal wires arranged inside the second dielectric ring, and the plurality of second metal wires are arranged in parallel and at intervals.
In some embodiments, the wave filter grid includes a third dielectric ring and a plurality of third metal grid bars disposed inside the third dielectric ring, the plurality of third metal grid bars are disposed in parallel and at intervals, and a distance between any two adjacent third metal grid bars is greater than a width of the third metal grid bar.
In some embodiments, a projection of the second metal grid on a plane perpendicular to the central axis of the polar modulator forms an angle of 40 ° to 50 ° with a projection of the third metal grid on the plane.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a polar modulator provided in an embodiment of the present disclosure;
FIG. 2 is a view of the polar modulator of FIG. 1 in the direction A;
FIG. 3 is a cross-sectional view taken along line B-B of the polar modulator shown in FIG. 1;
FIG. 4 is a cross-sectional view of the polar modulator of FIG. 1 taken along line C-C;
fig. 5 is a schematic diagram of a relationship between a rotation angle of the second dielectric wire grid structure and a polarization direction of a linear polarization wave emitted from the second dielectric wire grid structure, which is obtained through a simulation experiment.
Icon: 1-a scaffold; 2-a first dielectric wire grid structure; 21-a first incident side; 22-a first exit side; 23-a first dielectric ring; 24-a first metal grid; 3-a second dielectric wire grid structure; 31-a second incident side; 32-a second exit side; 33-a second dielectric ring; 34-a second metal grid; 4-wave filter grids; 41-third incident side; 42-a third exit side; 43-a third dielectric ring; 44-third metal grid.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments derived from the present application by a person of ordinary skill in the art based on the embodiments in the present disclosure are within the scope of protection of the present disclosure.
In order to realize the polarization modulation of the electromagnetic wave signal, so that the polarization direction of the obtained electromagnetic wave signal meets the requirement, the embodiment of the disclosure provides a polarization modulator.
As shown in fig. 1, an embodiment of the present disclosure provides a polar modulator, including: a bracket 1; a first dielectric wire grid structure 2 fixed to the holder 1, the first dielectric wire grid structure 2 having a first incident side 21 and a first exit side 22, the first dielectric wire grid structure 2 being configured to convert a first linear polarized wave incident from the first incident side 21 into a circularly polarized wave exiting from the first exit side 22; a second dielectric wire grid structure 3, the second dielectric wire grid structure 3 having a second incident side 31 and a second exit side 32, the second incident side 31 facing the first exit side 22, the second dielectric wire grid structure 3 being rotatably connected to the holder 1, the second dielectric wire grid structure 3 being configured to convert a circularly polarized wave incident from the second incident side 31 into a second linearly polarized wave exiting from the second exit side 32.
The polarization modulator provided by the embodiment of the disclosure comprises a support 1, a first dielectric wire grid structure 2 and a second dielectric wire grid structure 3, wherein the first dielectric wire grid structure 2 has a first incident side 21 and a first emergent side 22, so that a first linear polarization wave incident from the first incident side 21 can be converted into a circularly polarized wave and can be emitted from the first emergent side 22. Since the second incident side 31 of the second dielectric wire grid structure 3 faces the first emitting side 22, the circularly polarized wave emitted from the first emitting side 22 can be received, and the circularly polarized wave can be converted into a second linearly polarized wave and emitted from the second emitting side 32. The second dielectric wire grid structure 3 is rotatably connected to the bracket 1, and the polarization direction of the second linear polarized wave emitted from the second emitting side 32 of the second dielectric wire grid structure is related to the rotation angle of the second dielectric wire grid on the bracket 1, and since the second dielectric wire grid structure 3 is rotatably connected to the bracket 1, the rotation angle of the second dielectric wire grid structure 3 is adjustable, so that the second linear polarized wave meeting the requirement of the desired direction can be modulated by adjusting the rotation angle of the second dielectric wire grid structure 3. Therefore, the polarization modulation of the electromagnetic wave signal can be realized by the embodiment of the disclosure, so that the polarization direction of the obtained electromagnetic wave signal meets the requirement.
As shown in fig. 1, in some embodiments of the present disclosure, the polarization modulator further includes a wave filter grid 4 rotatably connected to the support 1, the wave filter grid 4 has a third incident side 41 and a third exit side 42, the third incident side 41 faces the second exit side 32, and the wave filter grid 4 is used for filtering the second linear polarized wave to filter out noise waves outside the preset polarization direction. Although the second dielectric wire grid structure 3 can convert a circularly polarized wave into a second linearly polarized wave, there may be a cause such as a manufacturing error of the second dielectric wire grid structure 3, and the obtained second linearly polarized wave does not include only a linearly polarized wave of one polarization direction, that is, there is a clutter in the second linearly polarized wave. Therefore, the third incident side 41 of the wave filter 4 faces the second exit side 32, and can receive the second linear polarized wave emitted from the second dielectric wire grid structure 3, and can filter out clutter in the second linear polarized wave except the preset polarization direction, so that an electromagnetic wave satisfying the preset polarization direction can be obtained.
In addition, the second linear polarized wave emitted from the second dielectric wire grid structure 3 may include linear polarized waves with a plurality of polarization directions, and each polarization direction is within a small range, in order to enable the wave filtering grid 4 to filter the second linear polarized wave to obtain an electromagnetic wave satisfying the preset polarization direction, when the second dielectric wire grid structure 3 is rotatably connected to the bracket 1, the wave filter 4 is also rotatably connected to the bracket 1. When the wave filtering grating 4 is used, after the second dielectric wire grating structure 3 is rotated by a certain angle, the wave filtering grating 4 should also be rotated by a corresponding angle, so that the wave filtering grating 4 can always filter the second linear polarized wave and obtain the electromagnetic wave in the preset polarization direction.
As shown in fig. 1, in some embodiments of the present disclosure, centers of the first dielectric wire grid structure 2, the second dielectric wire grid structure 3, and the wave-filtering grid 4 are located on the same straight line. In this way, the pattern edge loss can be reduced, thereby reducing the gain loss of the polar modulator of the embodiments of the present disclosure.
Further, the first dielectric wire grid structure 2, the second dielectric wire grid structure 3 and the wave filtering grid 4 are all circular in shape, and the outer diameters of the first dielectric wire grid structure 2, the second dielectric wire grid structure 3 and the wave filtering grid 4 are all the same.
In some embodiments of the present disclosure, the polar modulator further comprises a driving device (not shown in fig. 1), which is connected to the second dielectric wire grid structure 3 to drive the second dielectric wire grid structure 3 to rotate relative to the support 1. The driving device can be a motor, and the output rotating speed of the motor is larger generally, so that a speed reducer can be connected between the motor and the second medium wire grid to reduce the rotating speed and improve the torque.
Further, the driving end of the driving device may be connected to the second dielectric wire grid structure 3 through a reducer and a sprocket. Specifically, a plurality of sprockets are arranged on the outer wall of the second dielectric wire grid structure 3 along the circumference, the output end of the speed reducer is connected with a sprocket, and the sprockets are connected with the sprocket through a chain; a rotating shaft is arranged at the center of the second dielectric wire grid structure 3 and is fixed on the bracket 1. In this way, the driving device can drive the second dielectric wire grid structure 3 to rotate around the rotating shaft through the speed reducer, the chain wheel, the chain and the chain teeth.
In some embodiments of the present disclosure, the driving means is further connected to the wave-filtering grid 4 to drive the wave-filtering grid 4 to rotate relative to the support 1 in a synchronized manner with the second dielectric wire grid structure 3. During the concrete realization, can be connected wave filter grid 4 and second medium wire grid structure 3 with same drive arrangement to make wave filter grid 4 and the synchronous rotation of second medium wire grid structure 3, like this, can drive second medium wire grid structure 3 and wave filter grid 4 simultaneously and rotate through a drive arrangement, can reduce drive arrangement's the quantity that sets up from this.
In some further embodiments of the present disclosure, the polar modulator further comprises second driving means connected to the grid of filters 4. That is, by driving the second dielectric wire grid structure 3 and the wave-filtering grid 4 to rotate separately for two different driving devices and causing the wave-filtering grid 4 and the second dielectric wire grid structure 3 to rotate synchronously, for example, the same rotation angle and rotation speed are set for the two driving devices. When wave filter grid 4 and second medium wire grid structure 3 synchronous revolution, can guarantee like this that the second line polarization wave that second medium wire grid structure 3 jetted out can pass through wave filter grid 4 all the time, and can be filtered by wave filter grid 4 to obtain and satisfy the electromagnetic wave of predetermineeing the polarization direction.
As shown in fig. 2, in some embodiments of the present disclosure, the first dielectric wire grid structure 2 includes a first dielectric ring 23 and a plurality of first metal grids 24 disposed inside the first dielectric ring 23, the plurality of first metal grids 24 are disposed in parallel and at intervals, and gaps between any two first metal grids 24 are the same. The material of the first dielectric wire grid structure 2 is a low-loss dielectric, and the width dimension of each first metal grid 24 along the arrangement direction of each first metal grid 24, the thickness of each first metal grid 24, and the gap between any two first metal grids 24 can be calculated according to the operating frequency of the first dielectric wire grid structure 2.
When the first linearly polarized wave passes through the first dielectric wire grid structure 2, the first linearly polarized wave can be decomposed into electromagnetic wave components propagating along two mutually perpendicular directions. The gap between the first metal grid bars 24 of the first dielectric wire grid structure 2 is air, and the dielectric constant thereof is usually 1, while the dielectric constant of the first metal grid bars 24 is not 1, i.e. the dielectric constant of the first metal grid bars 24 is different from that of the gap, so that the two electromagnetic wave components will travel at different speeds due to the different dielectric constants of the regions through which the two electromagnetic wave components pass, and thus, a phase difference of 90 ° is generated between the electromagnetic wave components in two directions perpendicular to each other. Therefore, the electromagnetic wave emitted from the first dielectric wire grid structure 2 is a circularly polarized wave.
In some embodiments of the present disclosure, the first metal grid 24 is angled at 45 ° or 135 ° from horizontal. Since the polarization direction of the incident first linearly polarized wave is generally the horizontal direction or the vertical direction, when the first metal grid 24 forms an angle of 45 ° with the horizontal plane, the first linearly polarized wave with the polarization direction being the horizontal direction can be converted into a circularly polarized wave. When the first metal grid 24 forms an included angle of 135 degrees with the horizontal plane, the first dielectric wire grid structure 2 can convert the first linear polarized wave with the vertical polarization direction into a circularly polarized wave.
As shown in fig. 3, in some embodiments of the present disclosure, the second dielectric wire grid structure 3 includes a second dielectric ring 33 and a plurality of second metal grids 34 disposed inside the second dielectric ring 33, the plurality of second metal grids 34 are disposed in parallel and at intervals, and gaps between any two second metal grids 34 are the same. Since the second dielectric wire grid structure 3 has the same structure as the first dielectric wire grid structure 2, when a circularly polarized wave passes through the second dielectric wire grid structure 3, the dielectric constants of electromagnetic wave components which propagate in two mutually perpendicular directions and have a phase difference of 90 ° in the propagation region of the second dielectric wire grid structure 3 are different, so that two electromagnetic wave components can be synthesized into one electromagnetic wave, that is, the emitted electromagnetic wave is a second linearly polarized wave.
As shown in fig. 4, in some embodiments of the present disclosure, the wave filtering grid 4 includes a third dielectric ring 43 and a plurality of third metal grid bars 44 disposed inside the third dielectric ring 43, the plurality of third metal grid bars 44 are disposed in parallel and spaced apart, and a distance between any two adjacent third metal grid bars 44 is greater than a width of the third metal grid bars 44. The width of the third metal grid 44 refers to the width of the projection of the third metal grid 44 on a plane perpendicular to the central axis of the wave filter 4. The third metal grid bars 44 are made of metal sheets, so that the thickness of the third metal grid bars 44 is small, the time for the second linear polarized wave to pass through the wave filter 4 is short, noise waves with the polarization direction outside the length direction of the third metal grid bars 44 can be filtered, and only the linear polarized waves with the polarization direction along the length direction of the third metal grid bars 44 are reserved. The thickness here refers to the dimension of the third metal grid 44 in the direction of the central axis of the polar modulator.
As shown in fig. 1, 3 and 4, in some embodiments of the present disclosure, the projection of the second metal grid 34 onto a plane perpendicular to the central axis of the polarization modulator makes an angle of 40-50 ° with the projection of the third metal grid 44 onto the plane. Because the error of the polarization direction of the second linear polarized wave emitted by the second dielectric wire grid structure 3 is between-5 ° and 5 °, and the polarization direction of the second linear polarized wave forms an included angle of 45 ° with the second metal grid 34, when the projection of the second metal grid 34 on the plane perpendicular to the central axis of the polarization modulator and the projection of the third metal grid 44 on the plane form an included angle of 40 ° to 50 °, the second linear polarized wave can be filtered to obtain an electromagnetic wave meeting the preset polarization direction.
The following tests were performed on the polarization direction of the linear polarization wave emitted from the polar modulator according to the embodiment of the present disclosure, in combination with simulation experiments.
The width of the first metal grid 24 of the first dielectric wire grid structure 2 and the width of the second metal grid 34 of the second dielectric wire grid structure 3 are both 0.5mm, the thickness is 3mm, the gap between any two first metal grid 24 is 1mm, the gap between any two second metal grid 34 is 1mm, and the working frequency of the first dielectric wire grid structure 2 and the second dielectric wire grid structure 3 are both 95 GHz. In this simulation experiment, the polarization modulator includes support 1, first dielectric wire grid structure 2 and second dielectric wire grid structure 3, and the incident electromagnetic wave is along the first linear polarization wave of vertical direction, and the contained angle between the length direction of the first metal grid 24 of polarization direction and first dielectric wire grid structure 2 is 45. Referring to fig. 5, the abscissa indicates the rotation angle of the second dielectric wire grid structure 3, when the rotation angle is 0, it indicates that the projection of the second metal grid 34 on the plane perpendicular to the central axis of the polarization modulator is 0, and the included angle between the projection of the first metal grid 24 on the plane is 0, and the ordinate indicates the included angle between the polarization direction of the second linear polarized wave emitted from the second dielectric wire grid structure 3 and the polarization direction of the incident first linear polarized wave. It can be seen from fig. 3 that when the rotation angle of the second dielectric wire grid structure 3 is different, the main polarization direction of the second linearly polarized wave is also different.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.
The above description is only for the preferred embodiment of the present disclosure, and is not intended to limit the scope of the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure are included in the scope of protection of the present disclosure.
Claims (10)
1. A polar modulator, comprising:
a support;
a first dielectric wire grid structure fixed to the support, the first dielectric wire grid structure having a first incident side and a first exit side, the first dielectric wire grid structure being configured to convert a first linearly polarized wave incident from the first incident side into a circularly polarized wave exiting from the first exit side;
a second dielectric wire grid structure having a second incident side and a second exit side, the second incident side facing the first exit side, the second dielectric wire grid structure being rotatably connected to the support, the second dielectric wire grid structure being configured to convert circularly polarized waves incident from the second incident side into second linearly polarized waves exiting from the second exit side.
2. The polar modulator according to claim 1, further comprising a wave filter grating rotatably coupled to the frame, the wave filter grating having a third incident side and a third exit side, the third incident side facing the second exit side, the wave filter grating configured to filter the second linearly polarized wave to filter out noise outside a predetermined polarization direction.
3. The polar modulator according to claim 2, characterized in that centers of the first dielectric wire grid structure, the second dielectric wire grid structure and the wave filtering grid are located on a same straight line.
4. The polar modulator according to claim 2, further comprising a driving device connected to the second dielectric wire grid structure to drive the second dielectric wire grid structure to rotate relative to the support.
5. The polar modulator according to claim 4, characterized in that the driving means is further connected to the wave-filtering grid for driving the wave-filtering grid to rotate relative to the support in a synchronized manner with the second dielectric wire-grid structure.
6. The polar modulator according to claim 1, wherein the first dielectric wire grid structure comprises a first dielectric ring and a plurality of first metal grids disposed inside the first dielectric ring, the plurality of first metal grids being disposed in parallel and spaced apart.
7. The polar modulator according to claim 6, wherein the first metal grid is at an angle of 45 ° or 135 ° to the horizontal.
8. The polar modulator according to claim 2, wherein the second dielectric wire grid structure comprises a second dielectric ring and a plurality of second metal grids disposed inside the second dielectric ring, the plurality of second metal grids being disposed in parallel and spaced apart.
9. The polar modulator according to claim 8, wherein the wave filtering grid comprises a third dielectric ring and a plurality of third metal grid bars disposed inside the third dielectric ring, the plurality of third metal grid bars are disposed in parallel and at intervals, and a distance between any two adjacent third metal grid bars is greater than a width of the third metal grid bars.
10. The polar modulator according to claim 9, wherein the projection of the second metal grid on a plane perpendicular to the central axis of the polar modulator is at an angle of 40 ° -50 ° to the projection of the third metal grid on the plane.
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US20110175780A1 (en) * | 2008-05-29 | 2011-07-21 | Rf Microtech S.R.L. | Flat scanning antenna |
CN206236797U (en) * | 2016-12-05 | 2017-06-09 | 航天恒星空间技术应用有限公司 | The polarization tracking device of grizzly bar shape linear polarized antenna |
CN108134211A (en) * | 2017-12-23 | 2018-06-08 | 中国人民解放军战略支援部队信息工程大学 | For the arbitrary line-linear polarization converter and conversion method of plane satellite antenna |
CN108155483A (en) * | 2018-02-05 | 2018-06-12 | 苏州灵致科技有限公司 | Polarization tracking device |
CN110137689A (en) * | 2019-06-17 | 2019-08-16 | 中国电子科技集团公司第二十九研究所 | A kind of circular polarizer that polarization is changeable |
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Publication number | Priority date | Publication date | Assignee | Title |
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US20110175780A1 (en) * | 2008-05-29 | 2011-07-21 | Rf Microtech S.R.L. | Flat scanning antenna |
CN206236797U (en) * | 2016-12-05 | 2017-06-09 | 航天恒星空间技术应用有限公司 | The polarization tracking device of grizzly bar shape linear polarized antenna |
CN108134211A (en) * | 2017-12-23 | 2018-06-08 | 中国人民解放军战略支援部队信息工程大学 | For the arbitrary line-linear polarization converter and conversion method of plane satellite antenna |
CN108155483A (en) * | 2018-02-05 | 2018-06-12 | 苏州灵致科技有限公司 | Polarization tracking device |
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