CN113178706A - Polar modulation antenna and communication device - Google Patents
Polar modulation antenna and communication device Download PDFInfo
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- CN113178706A CN113178706A CN202110417567.9A CN202110417567A CN113178706A CN 113178706 A CN113178706 A CN 113178706A CN 202110417567 A CN202110417567 A CN 202110417567A CN 113178706 A CN113178706 A CN 113178706A
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- waveguide
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- conversion waveguide
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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
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
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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 embodiment of the disclosure provides a polar modulation antenna and communication equipment. Wherein, the polar modulation antenna includes: a support; a first polarization conversion waveguide fixed to the holder, the first polarization conversion waveguide having a first incident side and a first exit side, the first polarization conversion waveguide 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; and a second polarization conversion waveguide rotatably coupled to the support, the second polarization conversion waveguide having a second incident side and a second exit side, the second incident side facing the first exit side, the second polarization conversion waveguide being configured to convert a circularly polarized wave incident from the second incident side into a second linearly polarized wave exiting from the second exit side. The embodiment of the disclosure can realize polarization modulation of the emergent electromagnetic wave signal, so that the polarization direction of the obtained electromagnetic wave signal meets the requirement.
Description
Technical Field
The present disclosure relates to the field of electromagnetic wave signal modulation technologies, and in particular, to a polar modulation antenna and a communication device.
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 modulation antenna and a communication device, so as to implement polarization modulation on an outgoing electromagnetic wave signal, so that the polarization direction of the obtained electromagnetic wave signal meets the requirement. The specific technical scheme is as follows:
in a first aspect of the embodiments of the present disclosure, a polar modulation antenna is provided, including:
a support;
a first polarization conversion waveguide fixed to the holder, the first polarization conversion waveguide having a first incident side and a first exit side, the first polarization conversion waveguide 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 polarization conversion waveguide rotatably coupled to the support, the second polarization conversion waveguide having a second incident side and a second exit side, the second incident side facing the first exit side, the second polarization conversion waveguide being configured to convert a circularly polarized wave incident from the second incident side into a second linearly polarized wave exiting from the second exit side.
The polarization modulator provided by the embodiment of the disclosure comprises a support, a first polarization conversion waveguide and a second polarization conversion waveguide, wherein the first polarization conversion waveguide 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 emitted from the first emergence side. The second polarization conversion waveguide has a second incident side facing the first emission side, and thus can receive the circularly polarized wave emitted from the first emission side and convert the circularly polarizer into a second linearly polarized wave to be emitted from the second emission side. The polarization direction of the second linear polarized wave emitted by the second emitting side of the second polarization conversion waveguide is related to the rotation angle of the second polarization conversion waveguide on the bracket, and the second polarization conversion waveguide is rotatably connected to the bracket, so that the rotation angle of the second polarization conversion waveguide can be adjusted, and the second linear polarized wave meeting the requirement of the expected direction can be modulated by adjusting the rotation angle of the second polarization conversion waveguide. 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 polarization modulation antenna further includes a radiation waveguide having a third incident side and a third exit side, the third incident side being directed toward the second exit side for radiating a second linearly polarized wave incident from the third incident side out of the third exit side.
In some embodiments, the polarization modulation antenna further comprises a connecting waveguide disposed between the first polarization conversion waveguide and the second polarization conversion waveguide, the connecting waveguide configured to propagate a circularly polarized wave launched by the first polarization conversion wave to the second polarization conversion waveguide.
In some embodiments, the polar modulation antenna further comprises an entrance waveguide having a fourth entrance side and a fourth exit side, the fourth exit side facing the first entrance side, the cross-sectional area of the inner wall of the entrance waveguide gradually increasing from the fourth entrance side to the fourth exit side.
In some embodiments, centers of the inlet waveguide, the first polarization conversion waveguide, the connection waveguide, the second polarization conversion waveguide, and the radiation waveguide are located on the same straight line.
In some embodiments, an outer surface of the first polarization conversion waveguide is circular in shape, an inner wall of the first polarization conversion waveguide on the first incident side is circular in shape, and an inner wall of the first polarization conversion waveguide on the first exit side is elliptical in shape.
In some embodiments, the outer surface of the second polarization conversion waveguide is circular in shape, the inner wall of the second polarization conversion waveguide on the second incident side is elliptical in shape, and the inner wall of the second polarization conversion waveguide on the second exit side is circular in shape.
In some embodiments, the polarization modulation antenna further comprises a driving device connected to the second polarization conversion waveguide to drive the second polarization conversion waveguide to rotate relative to the support.
In some embodiments, the drive device is further coupled to the radiation guide to drive the radiation guide to rotate relative to the mount in synchronization with the second polarization conversion waveguide.
In a second aspect of the disclosed embodiments, there is provided a communication device, including: a communication device body, and the polar modulation antenna of any one of the above, the polar modulation antenna being fixed to the communication device body.
The communication device provided by the embodiment of the disclosure comprises a communication device body and a polarization modulation antenna, wherein the polarization modulation antenna comprises a support, a first polarization conversion waveguide and a second polarization conversion waveguide, wherein the first polarization conversion waveguide is provided with a first incident side and a first emergent side, so that a first linear polarized wave incident from the first incident side can be converted into a circularly polarized wave and emitted from the first emergent side. The second polarization conversion waveguide has a second incident side facing the first emission side, and thus can receive the circularly polarized wave emitted from the first emission side and convert the circularly polarizer into a second linearly polarized wave to be emitted from the second emission side. The polarization direction of the second linear polarized wave emitted by the second emitting side of the second polarization conversion waveguide is related to the rotation angle of the second polarization conversion waveguide on the bracket, and the second polarization conversion waveguide is rotatably connected to the bracket, so that the rotation angle of the second polarization conversion waveguide can be adjusted, and the second linear polarized wave meeting the requirement of the expected direction can be modulated by adjusting the rotation angle of the second polarization conversion waveguide. 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.
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 modulation antenna provided in an embodiment of the present disclosure;
fig. 2 is a sectional view taken along a-a of the polar modulation antenna shown in fig. 1;
fig. 3 is a cross-sectional view of the polar modulation antenna shown in fig. 1 in the direction of B-B.
Icon: 1-a scaffold; 2-a first polarization converting waveguide; 21-a first incident side; 22-a first exit side; 3-a second polarization conversion waveguide; 31-a second incident side; 32-a second exit side; 4-a radiation waveguide; 41-third incident side; 42-a third exit side; 5-connecting the waveguides; 6-an inlet waveguide; 61-a fourth incident side; 62-fourth exit side.
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 polarization modulation of an outgoing 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 modulation antenna and communication equipment.
As shown in fig. 1, an embodiment of the present disclosure provides a polar modulation antenna, including: the polarization conversion device comprises a support 1, a first polarization conversion waveguide 2 and a second polarization conversion waveguide 3, wherein the first polarization conversion waveguide 2 is fixed on the support 1, the first polarization conversion waveguide 2 is provided with a first incident side 21 and a first emergent side 22, and the first polarization conversion waveguide 2 is configured to convert a first linear polarization wave incident from the first incident side 21 into a circularly polarized wave emergent from the first emergent side 22. And a second polarization conversion waveguide 3 rotatably coupled to the holder 1, the second polarization conversion waveguide 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 polarization conversion waveguide 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 polarization conversion waveguide 2 and a second polarization conversion waveguide 3, wherein the first polarization conversion waveguide 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 emitted from the first emergent side 22. Since the second incident side 31 of the second polarization conversion waveguide 3 faces the first emission side 22, the circular polarization wave emitted from the first emission side 22 can be received, and the circular polarizer can be converted into a second linear polarization wave and emitted from the second emission side 32. The polarization direction of the second linearly polarized wave emitted from the second emitting side 32 of the second polarization conversion waveguide 3 is related to the rotation angle of the second polarization conversion waveguide 3 on the bracket 1, and the rotation angle of the second polarization conversion waveguide 3 is adjustable because the second polarization conversion waveguide 3 is rotatably connected to the bracket 1, so that the second linearly polarized wave meeting the requirement of the expected direction can be modulated by adjusting the rotation angle of the second polarization conversion waveguide 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 modulation antenna further includes a radiation waveguide 4, the radiation waveguide 4 having a third incident side 41 and a third exit side 42, the third incident side 41 facing the second exit side 32 for radiating the second linearly polarized wave incident from the third incident side 41 from the third exit side 42. Further, the radiation waveguide 4 may be a horn antenna, and the cross-sectional dimension of the third entrance side 41 is smaller than the cross-sectional dimension of the third exit side 42. The horn antenna has a simple structure, and the directional pattern is simple and easy to control, so that the directional pattern of the polar modulation antenna of the embodiment of the disclosure can be easily controlled.
As shown in fig. 1, in some embodiments of the present disclosure, the polarization modulation antenna further includes a connecting waveguide 5 disposed between the first polarization conversion waveguide 2 and the second polarization conversion waveguide 3, the connecting waveguide 5 being configured to propagate a circularly polarized wave emitted from the first polarization conversion waveguide to the second polarization conversion waveguide 3. Thus, the circularly polarized wave emitted from the first polarization conversion waveguide 2 can propagate inside the connection waveguide 5, and therefore, the loss of the circularly polarized wave during propagation can be reduced.
Further, the connection waveguide 5 may be a metal circular waveguide. In addition, since the first polarization conversion waveguide 2 is fixed to the support 1 and the second polarization conversion waveguide 3 is rotatably coupled to the support 1, the connection waveguide 5 can be fixedly coupled to the first polarization conversion waveguide 2, that is, indirectly fixed to the support 1. Or the connecting waveguide 5 is fixedly connected, i.e. indirectly rotatably connected, to the second polarization conversion waveguide 3. Or as shown in fig. 1, the connecting waveguide 5 may also be directly fixed to the support 1, and gaps are formed between the connecting waveguide 5 and the first polarization conversion waveguide 2, and between the connecting waveguide 5 and the second polarization conversion waveguide 3, so that the situation that the second polarization conversion waveguide 3 rubs against the connecting waveguide 5 when rotating around the support 1, and further the rotational stability of the second polarization conversion waveguide 3 is affected can be avoided.
As shown in fig. 1, in some embodiments of the present disclosure, the polarization modulation antenna further comprises an entrance waveguide 6, the entrance waveguide 6 having a fourth entrance side 61 and a fourth exit side 62, the fourth exit side 62 being towards the first entrance side 21, the cross-sectional area of the inner wall of the entrance waveguide 6 gradually increasing from the fourth entrance side 61 towards the fourth exit side 62. In this way, the entrance waveguide 6 can receive the first linearly polarized wave emitted by the feed source with a small emitting area and propagate the first linearly polarized wave to the first polarization conversion waveguide 2, so as to reduce the loss of the first linearly polarized wave in the propagation process.
Further, the inlet waveguide 6 may be a rectangular port metal waveguide, or a circular port metal waveguide.
As shown in fig. 1, in some embodiments of the present disclosure, the centers of the inlet waveguide 6, the first polarization conversion waveguide 2, the connection waveguide 5, the second polarization conversion waveguide 3, and the radiation waveguide 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.
As shown in fig. 2, in some embodiments of the present disclosure, the shape of the outer surface of the first polarization conversion waveguide 2 is circular, the shape of the inner wall of the first polarization conversion waveguide 2 at the first incident side 21 is circular, and the shape of the inner wall at the first exit side 22 is elliptical. The structure of the first polarization conversion waveguide 2 is simple, and therefore, the structure of the polarization modulation antenna of the embodiment of the present disclosure is simple.
Further, the first polarization conversion waveguide 2 may be an elliptical circularly polarized waveguide, a rectangular circularly polarized waveguide, a septa circularly polarized waveguide, or the like. Wherein the major axis of the ellipse of the inner wall of the first exit side 22 forms an angle of 45 ° or 135 ° with the horizontal plane. Since the polarization direction of the incident first linearly polarized wave is generally the horizontal direction or the vertical direction, when the major axis of the ellipse forms an included angle of 45 ° with the horizontal plane, the first linearly polarized wave whose polarization direction is the horizontal direction can be converted into a circularly polarized wave. When the major axis of the ellipse forms an included angle of 135 degrees with the horizontal plane, the first polarization conversion waveguide 2 can convert the first linear polarized wave whose polarization direction is the vertical direction into a circularly polarized wave.
As shown in fig. 3, in some embodiments of the present disclosure, the outer surface of the second polarization conversion waveguide 3 is circular in shape, the inner wall of the second polarization conversion waveguide 3 at the second incident side 31 is elliptical in shape, and the inner wall at the second exit side 32 is circular in shape. Such a second polarization conversion waveguide 3 is simpler in structure, and therefore, the structure of the polarization modulation antenna according to the embodiment of the present disclosure is simpler.
Further, the second polarization conversion waveguide 3 may be an elliptical circular polarization waveguide, a rectangular circular polarization waveguide, a septa circular polarization waveguide, or the like.
In some embodiments of the present disclosure, the polarization modulation antenna further comprises a driving device (not shown in fig. 1) connected to the second polarization conversion waveguide 3 to drive the second polarization conversion waveguide 3 to rotate relative to the support 1. The driving device can be a motor, and the output rotating speed of the motor is usually higher, so a speed reducer can be connected between the motor and the second polarization conversion waveguide 3 to reduce the rotating speed and improve the torque.
Further, the driving end of the driving device may be connected to the second polarization conversion waveguide 3 through a decelerator and a sprocket. Specifically, a plurality of sprockets are arranged on the outer wall of the second polarization conversion waveguide 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 polarization conversion waveguide 3 and is fixed on the bracket 1. In this way, the driving device can drive the second polarization conversion waveguide 3 to rotate about the rotation axis through the speed reducer, the sprocket, the chain, and the sprocket.
In some embodiments of the present disclosure, the driving means is also connected to the radiation guide 4 to drive the radiation guide 4 to rotate relative to the mount 1 in a synchronized manner with the second polarization conversion waveguide 3. In specific implementation, the radiation waveguide 4 and the second polarization conversion waveguide 3 can be connected with the same driving device, so that the radiation waveguide 4 and the second polarization conversion waveguide 3 synchronously rotate, and thus, the second polarization conversion waveguide 3 and the radiation waveguide 4 can be simultaneously driven to rotate by one driving device, and the number of the driving devices can be reduced.
In some further embodiments of the present disclosure, the polar modulator further comprises a second drive means connected to the radiation guide 4. That is, the second polarization conversion waveguide 3 and the radiation waveguide 4 are driven to rotate by two different driving devices, respectively, and the radiation waveguide 4 and the second polarization conversion waveguide 3 are caused to rotate in synchronization, for example, the same rotation angle and rotation speed are set for the two driving devices. When the radiation waveguide 4 and the second polarization conversion waveguide 3 rotate synchronously, it can be ensured that the second linearly polarized wave emitted from the second polarization conversion waveguide 3 can always pass through the radiation waveguide 4 and can be radiated by the radiation waveguide 4.
An embodiment of the present disclosure further provides a communication device, including: a communication device body, and any one of the above-described polar modulation antennas, the polar modulation antenna being fixed to the communication device body. The communication device may be, for example, a cellular phone, or a satellite communication device, etc. The communication equipment body refers to a housing and the like of the communication equipment, wherein the polar modulation lines can be fixed.
The communication equipment provided by the embodiment of the disclosure comprises a communication equipment body and a polarization modulation antenna, and can realize polarization modulation on electromagnetic wave signals so that the polarization direction of the obtained electromagnetic wave signals meets the requirement.
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 modulation antenna, comprising:
a support;
a first polarization conversion waveguide fixed to the holder, the first polarization conversion waveguide having a first incident side and a first exit side, the first polarization conversion waveguide 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 polarization conversion waveguide rotatably coupled to the support, the second polarization conversion waveguide having a second incident side and a second exit side, the second incident side facing the first exit side, the second polarization conversion waveguide being configured to convert a circularly polarized wave incident from the second incident side into a second linearly polarized wave exiting from the second exit side.
2. The polar modulation antenna according to claim 1, characterized in that the polar modulation antenna further comprises a radiation waveguide having a third incident side and a third exit side, the third incident side being directed to the second exit side for radiating a second linear polarized wave incident from the third incident side out of the third exit side.
3. The polar modulation antenna according to claim 2, further comprising a connecting waveguide disposed between the first and second polarization conversion waveguides, the connecting waveguide configured to propagate a circularly polarized wave launched from the first polarization converted wave to the second polarization conversion waveguide.
4. The polar modulation antenna according to claim 3, characterized in that the polar modulation antenna further comprises an entrance waveguide having a fourth entrance side and a fourth exit side, the fourth exit side being directed towards the first entrance side, the cross-sectional area of the inner wall of the entrance waveguide gradually increasing from the fourth entrance side towards the fourth exit side.
5. The polar modulation antenna according to claim 4, wherein centers of the entrance waveguide, the first polarization conversion waveguide, the connection waveguide, the second polarization conversion waveguide, and the radiation waveguide are located on the same straight line.
6. The polar modulation antenna according to claim 1, wherein an outer surface of the first polarization conversion waveguide is circular in shape, an inner wall of the first polarization conversion waveguide on the first incident side is circular in shape, and an inner wall of the first polarization conversion waveguide on the first exit side is elliptical in shape.
7. The polar modulation antenna according to claim 1, wherein an outer surface of the second polarization conversion waveguide is circular in shape, an inner wall of the second polarization conversion waveguide on the second incident side is elliptical in shape, and an inner wall of the second polarization conversion waveguide on the second exit side is circular in shape.
8. The polar modulation antenna of claim 2, further comprising a drive device coupled to the second polarization conversion waveguide to drive the second polarization conversion waveguide to rotate relative to the support.
9. The polar modulation antenna according to claim 8, wherein the driving device is further connected to the radiation waveguide to drive the radiation waveguide to rotate relative to the support in a manner synchronized with the second polarization conversion waveguide.
10. A communication device, comprising: a communication apparatus body, and the polar modulation antenna according to any one of claims 1 to 9, which is fixed to the communication apparatus body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110417567.9A CN113178706A (en) | 2021-04-19 | 2021-04-19 | Polar modulation antenna and communication device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110417567.9A CN113178706A (en) | 2021-04-19 | 2021-04-19 | Polar modulation antenna and communication device |
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| CN113178706A true CN113178706A (en) | 2021-07-27 |
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| CN202110417567.9A Pending CN113178706A (en) | 2021-04-19 | 2021-04-19 | Polar modulation antenna and communication device |
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| EP1003235A1 (en) * | 1998-11-20 | 2000-05-24 | Alps Electric Co., Ltd. | Linear/circular polarization converter utilizing elliptical waveguide |
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| CN103247865A (en) * | 2012-12-12 | 2013-08-14 | 上海航天测控通信研究所 | X-band wide beam circularly polarized antenna for lunar rover |
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2021
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| EP0276347A1 (en) * | 1987-01-28 | 1988-08-03 | Epsco, Incorporated | Polarization converter system |
| JPH05110303A (en) * | 1991-10-19 | 1993-04-30 | Nec Corp | Circularly polarized wave primary radiator |
| EP1003235A1 (en) * | 1998-11-20 | 2000-05-24 | Alps Electric Co., Ltd. | Linear/circular polarization converter utilizing elliptical waveguide |
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