CN114300862A - Ka-band circular polarization automatic switching reset device - Google Patents
Ka-band circular polarization automatic switching reset device Download PDFInfo
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- CN114300862A CN114300862A CN202210030307.0A CN202210030307A CN114300862A CN 114300862 A CN114300862 A CN 114300862A CN 202210030307 A CN202210030307 A CN 202210030307A CN 114300862 A CN114300862 A CN 114300862A
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Abstract
The invention relates to the technical field of Ka-band satellites, in particular to a Ka-band circular polarization automatic switching reset device which comprises a polarization mode automatic acquisition system and a transmission system, wherein the polarization mode automatic acquisition system comprises a GPS (global positioning system), a modem and a control unit, the GPS is correspondingly arranged with the modem, the modem is correspondingly arranged with the control unit, the GPS is used for automatically acquiring a local geographical position and uploading the geographical position to the modem, the modem is used for selecting a most suitable spot beam according to the geographical position and KML (K-Markov-Link) geographical information preset in the modem and a sharing protocol and sending the polarization mode of the beam to the control unit, and the control unit is used for controlling the transmission system to automatically work according to the polarization mode of the beam. The antenna terminal can be automatically switched to a required spot beam polarization mode according to the geographical position, the technical requirements of operators are greatly reduced, and the user network experience is improved.
Description
Technical Field
The invention relates to the technical field of Ka-band satellites, in particular to a Ka-band circular polarization automatic switching reset device.
Background
Compared with the traditional Ku frequency band satellite, the novel Ka frequency band satellite has the advantages that the satellite transmission speed is 3-5 times that of the traditional satellite at present, the anti-interference capacity can be enhanced, the novel Ka frequency band satellite can be interconnected with a ground network, and a space-ground integrated satellite communication network is perfectly realized. The Ka frequency band satellite adopts spot beam coverage, can concentrate radio frequency energy into a narrow beam with a small coverage area, and provides higher G/T and EIRP for the coverage area. The Ka satellite antenna adopts a circular polarization mode, and left and right rotation differences exist, so that the antenna terminal is required to be switched to different polarization directions at different geographic positions.
The existing polarization switching of the Ka satellite antenna mostly adopts a manual switching mode, a receiving and transmitting unit of the existing Ka satellite antenna mainly comprises a receiving and transmitting all-in-one machine, a sealing ring, a locking screw group, a circular polarizer, a waveguide adapter plate and a feed source, physical ports of the receiving and transmitting all-in-one machine are separated receiving and transmitting channels and are in butt joint with the circular polarizer, a positioning clamping groove for left rotation or right rotation is designed on the receiving and transmitting all-in-one machine, a partition plate with gradually changed height is designed in the middle of the circular polarizer and is relatively fixed with the positioning clamping groove in angle, left rotation or right rotation signals are received according to the direction matched with the clamping groove of the clamping groove, and the satellite-aiming action of the antenna is completed. The sealing ring is arranged in a sealing groove on the circular polarizer and used for preventing external dust and water vapor from entering a microwave channel in the transceiver, the service life of the equipment is prolonged, in addition, the waveguide adapter and the feed source are mainly used for radiating radio frequency power from the feed line to the reflecting surface in an electromagnetic wave mode to generate proper field distribution on the caliber, so that required sharp wave beams or shaping wave beams are formed, and meanwhile, the power leaked from the edge of the reflecting surface is enabled to be as small as possible, so that the highest gain is realized.
The prior technical scheme mainly has the following defects: 1) the circular polarizer needs to be manually switched, all parts of the receiving and transmitting unit are disassembled and then reassembled, time and labor are wasted, the risk of installation errors exists, and operators are required to have strong professional skills; 2) when the polarization mode is switched, the satellite antenna is powered off in sections, although most of the Ka frequency band resources of the domestic satellite are in left-handed rotation at present, and left-handed rotation assembly can be defaulted in factory setting time, if the using position of the satellite antenna is in a left-handed rotation spot beam overlapping area, the polarization mode needs to be switched frequently, and user network experience is seriously influenced.
Disclosure of Invention
Aiming at the problems, the invention provides an automatic Ka-band circular polarization switching reset device, which effectively solves the defects in the prior art.
In order to achieve the purpose, the technical scheme applied by the invention is as follows:
a Ka-band circular polarization automatic switching reset device comprises a polarization mode automatic acquisition system and a transmission system, wherein the polarization mode automatic acquisition system comprises a GPS, a modem and a control unit, the GPS is arranged corresponding to the modem, the modem is arranged corresponding to the control unit, the GPS is used for automatically acquiring a local geographic position and uploading the geographic position to the modem, the modem is used for selecting a most suitable spot beam according to the geographic position and internally preset KML geographic information in cooperation and a sharing protocol and sending the polarization mode of the beam to the control unit, and the control unit is used for controlling the transmission system to automatically work according to the polarization mode of the beam.
According to the scheme, the transmission system comprises a receiving and transmitting all-in-one machine, a circular polarizer, a transmission assembly, an adjusting assembly, a feed source assembly and a driving assembly, the first end of the circular polarizer is in seamless connection with a microwave channel port of the receiving and transmitting all-in-one machine, the first end of the transmission assembly is connected with the second end of the circular polarizer, the first end of the transmission assembly is provided with a clamping assembly which corresponds to the adjusting assembly in clamping, the second end of the transmission assembly is connected with the feed source assembly, and the driving assembly is controlled to be started through a control unit, so that the driving assembly drives the transmission assembly to work.
According to the scheme, the transmission assembly comprises a synchronous belt wheel, a synchronous belt and a central rotating shaft, the central rotating shaft is fixed on the synchronous belt wheel, the synchronous belt wheel is connected with the second end of the circular polarizer, a clamping assembly corresponding to clamping of the adjusting assembly is arranged on the synchronous belt wheel, the central rotating shaft is connected with the feed source assembly, the first end of the synchronous belt is wound on the synchronous belt wheel, and the second end of the synchronous belt is sleeved on an output wheel of the driving assembly.
According to the scheme, the adjusting assembly comprises an adjusting support base plate and a limiting cam, the limiting cam is fixed on the adjusting support base plate, the synchronous belt pulley is arranged in the limiting cam in a penetrating mode and connected with the second end of the circular polarizer, a groove with a change curve is arranged on the limiting cam, the angle range of the groove is 0-180 degrees, the axial height difference value is 0-3mm, the clamping assembly comprises a cam bearing and a cam ejector rod which are arranged on the synchronous belt pulley, the cam ejector rod and the groove are in the same diameter, and the cam ejector rod is arranged in the groove in a penetrating mode and limited through the cam bearing.
According to the scheme, the feed source assembly comprises a deep groove ball bearing, a limiting photoelectric separation blade, a photoelectric sensor and a feed source, the deep groove ball bearing is connected to the central rotating shaft of the transmission assembly, the limiting photoelectric separation blade is installed on the deep groove ball bearing, the photoelectric sensor and the feed source are installed on the motor installation plate of the driving assembly, and the photoelectric sensor and the limiting photoelectric separation blade are correspondingly arranged.
According to the scheme, the driving assembly comprises a driving motor arranged on the motor mounting plate, the driving motor starts or closes to work by receiving an instruction sent by the control unit, and a positioning assembly is arranged between the motor mounting plate and the adjusting support bottom plate of the adjusting assembly.
According to the scheme, the positioning assembly comprises a linear flange bearing and a guide pillar, one end of the guide pillar is fixed on the motor mounting plate, and the other end of the guide pillar is fixed on the adjusting support base plate through the linear flange bearing.
According to the scheme, the drive motor is a stepping motor with an integrated incremental grating encoder, and the resolution of the encoder reaches 1000 lines.
According to the scheme, the connecting end of the circular polarizer is provided with the sealing groove, and the sealing ring is installed in the sealing groove.
The invention has the beneficial effects that:
1) the Ka spot beam polarization mode automatic acquisition system reduces the requirements of operators and improves the network experience of users;
2) the polarization mode automatic switching mechanism is adopted, and the stepping motor simultaneously controls the linear motion of the circular polarizer and the rotary motion of the limiting photoelectric barrier to complete the whole smooth fitting curve;
3) a closed-loop control calibration system is provided, wherein a grating encoder and a photoelectric sensor are added on the basis of transmission of a stepping motor, so that the positioning precision is improved, and the optimal electrical property and side lobe envelope are ensured.
Drawings
FIG. 1 is a control schematic diagram according to a first embodiment;
FIG. 2 is a schematic diagram of the overall transmission system;
FIG. 3 is an exploded view of the transmission system as a whole;
FIG. 4 is a schematic view of the assembly of the limit cam with the rotating timing pulley;
fig. 5 is a control schematic diagram in the second embodiment.
1. A transceiver; 2. a seal ring; 3. a circular polarizer; 4. adjusting the support base plate; 5. a linear flange bearing; 6. a guide post; 7. a limiting cam; 8. a synchronous pulley; 9. a synchronous belt; 10. a cam bearing; 11. a cam mandril; 12. a central rotating shaft; 13. a deep groove ball bearing; 14. a limiting photoelectric blocking sheet; 15. a photosensor; 16. a motor mounting plate; 17. a feed source; 18. a drive motor; 31. a sealing groove; 71. and (4) a groove.
Detailed Description
The technical solution of the present invention is described below with reference to the accompanying drawings and examples.
The first embodiment is as follows:
as shown in fig. 1 to 4, the Ka-band circular polarization automatic switching resetting device according to the present invention includes a polarization automatic acquiring system and a transmission system, wherein the polarization automatic acquiring system includes a GPS, a modem and a control unit, the GPS is disposed corresponding to the modem, the modem is disposed corresponding to the control unit, the GPS is configured to automatically acquire a local geographical location and upload the geographical location to the modem, the modem is configured to cooperate with a sharing protocol to select a most suitable spot beam according to the geographical location and internally preset KML geographical information and send a polarization mode of the spot beam to the control unit, and the control unit is configured to control the transmission system to automatically operate according to the polarization mode of the spot beam. The above constitutes the basic structure of the present invention.
The invention adopts the structural arrangement, when the satellite terminal is powered on, the GPS automatically acquires the local geographical position and uploads the geographical position to the modem, the modem selects the most suitable spot beam according to the geographical position uploaded by the GPS and the KML geographical information preset in the modem in cooperation with a sharing protocol, and then sends information such as the polarization mode of the beam to the control unit, and the control unit sends a working instruction to the transmission system according to the polarization mode of the beam, so that the antenna terminal can be automatically switched to the required spot beam polarization mode according to the geographical position, the technical requirements of operators are greatly reduced, the user network experience is also improved, meanwhile, the optimal electrical performance and the sub-lobe envelope can be ensured by high-precision positioning design, and the network access permission of satellite resources is completely met.
In this embodiment, transmission system includes receiving and dispatching all-in-one 1, circular polarization ware 3, drive assembly, adjusting part, feed source subassembly and drive assembly, and the first end of circular polarization ware 3 is seamless with the microwave channel port of receiving and dispatching all-in-one 1, and the first end of drive assembly is connected with the second end of circular polarization ware 3, and the first end of drive assembly is equipped with the screens subassembly that corresponds the screens with adjusting part, and the second end of drive assembly is connected with the feed source subassembly, and drive assembly passes through the control unit control and starts for drive assembly drive assembly work. By adopting the structural arrangement, the control unit sends a working instruction to the driving component according to the polarization mode of the wave beam, so that the driving component drives the transmission component to carry out transmission work, the rotation action (namely circular polarization automatic switching) of the circular polarizer 3 is realized under the matching action of the transmission component and the adjusting component, the radiation of the radio frequency power from the feeder line to the reflecting surface in the form of electromagnetic waves is realized under the matching action of the transmission component and the feed source component, and the radio frequency power is enabled to generate proper field distribution on the caliber to form the required sharp wave beam or the shaped wave beam, and meanwhile, the power leaked from the edge of the reflecting surface to the outside is enabled to be as small as possible, so that the gain as high as possible is realized.
In practical application, the CONSOL software simulation verification shows that if the gap between the connecting end of the circular polarizer 3 and the microwave channel port of the transceiver 1 reaches 0.2mm, the return loss standing wave is not changed greatly, the gain of the low-frequency 20GHz band does not drop in the usable range, the envelope is good, but the 30GHz gain drop is larger than 1dB, the directional diagram envelope deteriorates, the antenna axial ratio deterioration is larger than 2dB, and the optimal electrical performance and side lobe envelope cannot be ensured. Therefore, the microwave system has extremely high requirements on size matching in the channel, and the circular polarizer 3 can not be selected to reserve a gap in the microwave channel, namely, a switching mode of direct rotary driving is adopted in the prior art.
In this embodiment, the transmission assembly includes synchronous pulley 8, synchronous belt 9 and central pivot 12, and on central pivot 12 was fixed in synchronous pulley 8, synchronous pulley 8 was connected with circular polarizer 3's second end, was equipped with the screens subassembly that corresponds the screens with adjusting part on the synchronous pulley 8, and central pivot 12 is connected with the feed subassembly, and the first end of synchronous belt 9 twines on synchronous pulley 8, and the second pot head of synchronous belt 9 is located on drive assembly's output wheel. By adopting the structure, when the driving component works, the synchronous belt 9 drives the synchronous belt pulley 8 to rotate synchronously, so that the synchronous belt pulley 8 drives the circular polarizer 3 to rotate (namely, circular polarization automatic switching), and simultaneously, the synchronous belt pulley 8 drives the feed source component to rotate, so as to realize the adjustment of relative zero position, and then the clockwise or anticlockwise rotating angle is determined according to the polarization mode information given by the modem, so as to complete the rotation action.
In this embodiment, the adjusting assembly includes an adjusting support base plate 4 and a limit cam 7, the limit cam 7 is fixed on the adjusting support base plate 4, the synchronous pulley 8 is inserted into the limit cam 7 and connected to the second end of the circular polarizer 3, the limit cam 7 is provided with a groove 71 with a change curve, the angle range of the groove 71 is 0-180 degrees, the axial height difference is 0-3mm, the clamping assembly includes a cam bearing 10 and a cam carrier rod 11 which are arranged on the synchronous pulley 8, the cam carrier rod 11 and the groove 71 have the same diameter, and the cam carrier rod 11 is inserted into the groove 71 and is limited by the cam bearing 10. By adopting the structure, when the driving component starts to drive the synchronous pulley 8 to rotate after receiving a working instruction sent by the main control unit, the cam mandril 11 arranged on the synchronous pulley 8 can displace in the groove 71, so that the synchronous pulley 8 can drive the joint of the first end of the circular polarizer 3 and the transceiver 1 to be quickly separated, meanwhile, the rotary damping caused by external friction of the synchronous pulley 8 can be reduced, and the load of the driving component is reduced, wherein the height difference value is changed from 0 to 3mm when the change curve is 0-10 degrees, the height difference value is kept unchanged when the change curve is 10-170 degrees, and the height difference value is changed from 3mm to 0 when the change curve is 170-180 degrees, so that the gap between the first end of the circular polarizer 3 and the joint of the transceiver 1 can be quickly reduced to 0.
In practical application, the cam mandril 11 on the synchronous pulley 8 is arranged in the groove 71 in a penetrating way and also plays a role in radial positioning.
In this embodiment, the feed source assembly includes a deep groove ball bearing 13, a limiting photoelectric blocking piece 14, a photoelectric sensor 15 and a feed source 17, the deep groove ball bearing 13 is connected to the central rotating shaft 12 of the transmission assembly, the limiting photoelectric blocking piece 14 is installed on the deep groove ball bearing 13, the photoelectric sensor 15 and the feed source 17 are installed on a motor installation plate 16 of the driving assembly, and the photoelectric sensor 15 and the limiting photoelectric blocking piece 14 are correspondingly arranged. By adopting the structure, after the driving assembly obtains a working instruction sent by the main control unit, the driving assembly starts to drive the synchronous belt wheel 8 to rotate clockwise, the synchronous belt wheel 8 drives the central rotating shaft 12 to rotate synchronously, the relative zero position can be confirmed after the limiting photoelectric blocking sheet 14 triggers the photoelectric sensor 15, and then the clockwise or anticlockwise rotating angle is determined according to the polarization mode information given by the modem, so that the rotating action is completed.
In the embodiment, the driving assembly comprises a driving motor 18 mounted on a motor mounting plate 16, the driving motor 18 starts or closes by receiving a command sent by a control unit, and a positioning assembly is arranged between the motor mounting plate 16 and the adjusting support base plate 4 of the adjusting assembly. By adopting the structure, when the driving motor 18 starts to work after receiving a working instruction sent by the main control unit, the synchronous belt pulley 8 is driven to rotate by the synchronous belt 9, so that not only is the rotation of the synchronous belt pulley 8 realized, but also the displacement of the circular polarizer 3 driven by the synchronous belt pulley 8 is realized, namely the extension and retraction between the first end of the circular polarizer 3 and the transceiver 1 are realized.
In this embodiment, the positioning assembly includes a linear flange bearing 5 and a guide post 6, one end of the guide post 6 is fixed on the motor mounting plate 16, and the other end of the guide post 6 is fixed on the adjusting support base plate 4 through the linear flange bearing 5. By adopting the structure, the adjusting and supporting base plate 4 is connected with the motor mounting plate 16 in an axial positioning manner through the linear flange bearing 5 and the guide pillar 6, and the transmission assembly, the adjusting assembly and the driving assembly can be smoothly linked.
In this embodiment, the driving motor 18 is a stepping motor with an integrated incremental grating encoder, and the resolution of the encoder is up to 1000 lines. By adopting the structure, the positioning precision can be greatly improved, namely, the accurate positioning of the circular polarizer 3 during displacement can be ensured, namely, the angles of the circular polarizer 3 and the microwave channel in the transceiver 1 are ensured to be absolutely consistent, a set of closed-loop control system is formed, and the electrical property of the whole set of antenna system is improved.
In this embodiment, a sealing groove 31 is provided at the connecting end of the circular polarizer 3, and a sealing ring 2 is installed in the sealing groove 31. By adopting the structure, the sealing ring 2 can prevent external dust and water vapor from entering the microwave channel of the transceiver 1, so that the service life and the electrical property of the whole system are prolonged.
Example two:
as shown in fig. 5, the second embodiment is different from the first embodiment in that: in the embodiment, firstly, the structural combination of the single motor, the synchronous belt wheel 8 and the limiting cam 7 is adopted to simultaneously complete the linear motion of the circular polarizer 3 and the rotary motion of the limiting photoelectric barrier 14, and secondly, the linear motion of the circular polarizer 3 is completed by adopting the driving motor and the screw nut mechanism, the rotary motion of the limiting photoelectric barrier 14 is completed by the driving motor and the synchronous belt wheel transmission mechanism, the actions of the two mechanisms are not interfered with each other, and the two mechanisms send stepping commands by the control unit. In addition, in order to ensure that each action is accurately positioned, a stepping motor and a photoelectric sensor of an incremental grating encoder are adopted.
While the embodiments of the present invention have been described, the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make various modifications without departing from the spirit and scope of the present invention as defined by the appended claims.
Claims (9)
1. The utility model provides a Ka wave band circular polarization automatic switch-over resetting means which characterized in that: the system comprises a polarization mode automatic acquisition system and a transmission system, wherein the polarization mode automatic acquisition system comprises a GPS, a modem and a control unit, the GPS and the modem are correspondingly arranged, the modem and the control unit are correspondingly arranged, the GPS is used for automatically acquiring a local geographic position and uploading the geographic position to the modem, the modem is used for selecting a most suitable spot beam according to the geographic position and a KML geographic information preset in the modem and a sharing protocol, and transmitting the polarization mode of the beam to the control unit, and the control unit is used for controlling the transmission system to automatically work according to the polarization mode of the beam.
2. The automatic switching reset device for the Ka-band circular polarization according to claim 1, wherein: the transmission system comprises a receiving and transmitting all-in-one machine (1), a circular polarizer (3), a transmission assembly, an adjusting assembly, a feed source assembly and a driving assembly, wherein the first end of the circular polarizer (3) is in seamless connection with the microwave channel port of the receiving and transmitting all-in-one machine (1), the first end of the transmission assembly is connected with the second end of the circular polarizer (3), the first end of the transmission assembly is provided with a clamping assembly which corresponds to the clamping position of the adjusting assembly, the second end of the transmission assembly is connected with the feed source assembly, and the driving assembly is controlled to be started through a control unit so that the driving assembly drives the transmission assembly to work.
3. The automatic switching reset device for the Ka-band circular polarization according to claim 2, wherein: the transmission assembly comprises a synchronous belt pulley (8), a synchronous belt (9) and a central rotating shaft (12), the central rotating shaft (12) is fixed on the synchronous belt pulley (8), the synchronous belt pulley (8) is connected with the second end of the circular polarizer (3), a clamping assembly corresponding to the clamping position of the adjusting assembly is arranged on the synchronous belt pulley (8), the central rotating shaft (12) is connected with the feed source assembly, the first end of the synchronous belt (9) is wound on the synchronous belt pulley (8), and the second end of the synchronous belt (9) is sleeved on an output wheel of the driving assembly.
4. The automatic switching reset device for Ka-band circular polarization according to claim 3, wherein: the adjusting component comprises an adjusting supporting base plate (4) and a limiting cam (7), the limiting cam (7) is fixed on the adjusting supporting base plate (4), a synchronous belt wheel (8) penetrates through the limiting cam (7) and is connected with the second end of the circular polarizer (3), a groove (71) with a change curve is formed in the limiting cam (7), the angle range of the groove (71) is 0-180 degrees, the axial height difference value is 0-3mm, the clamping component comprises a cam bearing (10) and a cam ejector rod (11) which are arranged on the synchronous belt wheel (8), the cam ejector rod (11) and the groove (71) are in the same diameter, and the cam ejector rod (11) penetrates through the groove (71) and is limited through the cam bearing (10).
5. The automatic switching reset device for Ka-band circular polarization according to claim 3, wherein: the feed source assembly comprises a deep groove ball bearing (13), a limiting photoelectric separation blade (14), a photoelectric sensor (15) and a feed source (17), the deep groove ball bearing (13) is connected to the central rotating shaft (12) of the transmission assembly, the limiting photoelectric separation blade (14) is installed on the deep groove ball bearing (13), the photoelectric sensor (15) and the feed source (17) are installed on a motor installation plate (16) of the driving assembly, and the photoelectric sensor (15) and the limiting photoelectric separation blade (14) are correspondingly arranged.
6. The automatic switching reset device for Ka-band circular polarization according to claim 5, wherein: the driving assembly comprises a driving motor (18) installed on a motor installation plate (16), the driving motor (18) starts or works in a closed mode through receiving an instruction sent by a control unit, and a positioning assembly is arranged between the motor installation plate (16) and an adjusting support bottom plate (4) of the adjusting assembly.
7. The automatic switching reset device for Ka-band circular polarization according to claim 6, wherein: the positioning assembly comprises a linear flange bearing (5) and a guide pillar (6), one end of the guide pillar (6) is fixed on the motor mounting plate (16), and the other end of the guide pillar (6) is fixed on the adjusting support bottom plate (4) through the linear flange bearing (5).
8. The automatic switching reset device for Ka-band circular polarization according to claim 6, wherein: the drive motor (18) adopts a stepping motor with an integrated incremental grating encoder, and the resolution of the encoder reaches 1000 lines.
9. The automatic switching reset device for the Ka-band circular polarization according to claim 2, wherein: be equipped with seal groove (31) on the link of circular polarizer (3), install sealing washer (2) in seal groove (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210030307.0A CN114300862A (en) | 2022-01-12 | 2022-01-12 | Ka-band circular polarization automatic switching reset device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210030307.0A CN114300862A (en) | 2022-01-12 | 2022-01-12 | Ka-band circular polarization automatic switching reset device |
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| CN114300862A true CN114300862A (en) | 2022-04-08 |
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| CN202210030307.0A Pending CN114300862A (en) | 2022-01-12 | 2022-01-12 | Ka-band circular polarization automatic switching reset device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115133259A (en) * | 2022-07-29 | 2022-09-30 | 北京星英联微波科技有限责任公司 | Compact broadband dual circularly polarized antenna |
| CN116914441A (en) * | 2023-09-14 | 2023-10-20 | 迪泰（浙江）通信技术有限公司 | Satellite antenna spin polarization switching method based on Ka band planar array |
-
2022
- 2022-01-12 CN CN202210030307.0A patent/CN114300862A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115133259A (en) * | 2022-07-29 | 2022-09-30 | 北京星英联微波科技有限责任公司 | Compact broadband dual circularly polarized antenna |
| CN116914441A (en) * | 2023-09-14 | 2023-10-20 | 迪泰（浙江）通信技术有限公司 | Satellite antenna spin polarization switching method based on Ka band planar array |
| CN116914441B (en) * | 2023-09-14 | 2023-12-29 | 迪泰（浙江）通信技术有限公司 | Satellite antenna spin polarization switching method based on Ka band planar array |
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