CN110854502B - Locking device for adjusting radiation area of communication antenna - Google Patents
Locking device for adjusting radiation area of communication antenna Download PDFInfo
- Publication number
- CN110854502B CN110854502B CN201911201932.1A CN201911201932A CN110854502B CN 110854502 B CN110854502 B CN 110854502B CN 201911201932 A CN201911201932 A CN 201911201932A CN 110854502 B CN110854502 B CN 110854502B
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- circular
- sliding
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- pot
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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
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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
- H01Q15/14—Reflecting surfaces; Equivalent structures
- H01Q15/16—Reflecting surfaces; Equivalent structures curved in two dimensions, e.g. paraboloidal
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
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Abstract
A locking device for adjusting a radiation area of a communication antenna comprises a bottom plate, wherein a circular ring frame is arranged on the bottom plate, a hollow cylinder is arranged on the inner bottom surface of the circular ring frame, two first circular sliding grooves are formed in the inner surface wall of the hollow cylinder, and circular ring plates are embedded in the inner surface walls of the two first circular sliding grooves in a sliding mode; the utility model discloses a hollow cylinder's inside bottom surface is slided to the bottom equidistance of pole, and the bottom of a plurality of first sliding balls is slided with hollow cylinder's inside bottom surface and is inlayed and establish, two the equal equidistance of surface of ring board slides and inlays and be equipped with a plurality of second sliding balls, and the surface of a plurality of second sliding balls slides with the inside table wall of first circular spout and inlays and establish to be equipped with the round bar between the interior table wall of two ring boards totally is provided with two to the top of round bar extends to hollow cylinder's outside, the bottom equidistance of round bar slides. This device can rotate the direction of communication pot, and the radiation area to the communication pot that can be better locks convenient to use in the use.
Description
Technical Field
The invention belongs to the technical field of communication devices, and particularly relates to a locking device for adjusting a radiation area of a communication antenna.
Background
The antenna is a converter which converts a guided wave transmitted on a transmission line into an electromagnetic wave transmitted in an unbounded medium or performs reverse conversion, and common antennas have reversibility, namely the same pair of antennas can be used as a transmitting antenna and a receiving antenna, the same antenna has the same basic characteristic parameters of transmitting or receiving, when the antenna is used, the radiation area of the antenna needs to be locked, when the radiation area of the antenna is locked, the angle is changed by rotating the antenna, so that the radiation area of the antenna can be locked, but in the prior art, the existing antenna is often seen as a big pot, when the existing big pot is rotated, because the big pot has a large volume, when the big pot is rotated, the big pot is difficult to rotate, and when the existing big pot is used, can only rotate the whole of cauldron, can't rotate the angle of cauldron, inconvenient locking the radiation area in using, some pots that have now simultaneously are direct places subaerial, very easy unstability, very easily lead to the cauldron to appear empting, thereby take place to damage, influence the use of cauldron, current communication pot places externally simultaneously, very easily because rainy weather, influence the model of communication pot, simultaneously because the erodeing of rainwater, in long-term use, very easily lead to the rusty condition of communication pot to appear taking place, then can greatly reduced communication pot's life.
Disclosure of Invention
In view of the technical problems in the background art, the locking device for adjusting the radiation area of the communication antenna provided by the invention can rotate the direction of the communication pot by rotating the round block, can independently rotate the communication pot by sliding the rotating rod on the supporting plate, can better lock the radiation area of the communication pot in use, and is convenient to use; meanwhile, the first screw rod penetrates into the underground, and the communication pot can be integrally fixed.
In order to solve the technical problems, the invention adopts the following technical scheme to realize:
a locking device for adjusting a radiation area of a communication antenna comprises a bottom plate, wherein a circular ring frame is arranged on the bottom plate, a hollow cylinder is arranged on the inner bottom surface of the circular ring frame, two first circular sliding grooves are formed in the inner surface wall of the hollow cylinder, and circular ring plates are embedded in the inner surface walls of the two first circular sliding grooves in a sliding mode; the utility model discloses a hollow cylinder's inside bottom surface is slided to the bottom equidistance of pole, and the bottom of a plurality of first sliding balls is slided with hollow cylinder's inside bottom surface and is inlayed and establish, two the equal equidistance of surface of ring board slides and inlays and be equipped with a plurality of second sliding balls, and the surface of a plurality of second sliding balls slides with the inside table wall of first circular spout and inlays and establish to be equipped with the round bar between the interior table wall of two ring boards totally is provided with two to the top of round bar extends to hollow cylinder's outside, the bottom equidistance of round bar slides.
In an optimized scheme, a round block is arranged at the top end of the round rod, second threaded holes are formed in the outer surfaces of the two sides of the circular ring frame, and the inner surface wall of each second threaded hole is in threaded connection with a second screw rod.
In the preferred scheme, one end of the second screw rod extends into the circular ring frame, and a fixing block is embedded into one end of the second screw rod in a sliding manner.
In the preferred scheme, one side surface of fixed block seted up the round mouth, the circular spout of second has been seted up to the interior table wall of round mouth, the interior table wall of the circular spout of second slides and inlays and be equipped with the plectane, and one side surface of plectane is established with the one end of second lead screw, the opposite side surface of fixed block is equipped with the arc grip block, the arc grip block is provided with two altogether, and the interior table wall of two arc grip blocks all with the surface contact of round piece.
In a preferred scheme, an elastic sealing layer is adhered to the outer surface of the round block close to the top edge, and one side of the elastic sealing layer is adhered to the inner surface wall of the circular ring frame close to the top edge.
In the preferred scheme, the top of circle piece be close to both sides edge and all be equipped with fixed slat, fixed slat is provided with two altogether, and one side surface of two fixed slats all seted up the third screw hole near top edge, the interior table wall threaded connection of third screw hole has the third lead screw, and the both ends of third lead screw all extend to the outside of third screw hole, the one end of third lead screw is equipped with first friction circle piece.
In the preferred scheme, the top of circle piece is close to center department both sides and all is equipped with the backup pad, the backup pad is provided with two altogether, and slides between two backup pads and run through there is the dwang, and the both ends of dwang all extend to the outside of backup pad, the both ends of dwang all are equipped with second friction circle piece, and one side surface of second friction circle piece and one side surface of first friction circle piece each other contact.
In the preferred scheme, the surface of dwang be equipped with the quarter butt, the top of quarter butt is equipped with the communication pot, the interior table wall center department of communication pot is provided with the wave guide, the top of wave guide is provided with the feed, the surface of wave guide is fixed with three bearing diagonal pole along the circumferencial direction equidistance, and the bottom of three bearing diagonal pole and the interior table wall fixed connection of communication pot.
In a preferable scheme, four signal enhancement sources are equidistantly arranged on the inner surface wall of the communication pot along the circumferential direction, a plurality of drainage holes are equidistantly formed in the inner surface wall of the communication pot close to the edge of the bottom of the communication pot, and an anti-rust layer is arranged on the outer surface of the communication pot.
In the preferred scheme, the top of bottom plate be close to four corners and all seted up first screw hole, the interior table wall threaded connection of first screw hole has first lead screw, and the both ends of first lead screw all extend to the outside of first screw hole to the bottom of first lead screw is most advanced structure.
This patent can reach following beneficial effect:
1. according to the invention, the round block is rotated, so that the round rod drives the circular plate to rotate in the first circular sliding groove, friction is effectively reduced through the first sliding ball and the second sliding ball, the round block is convenient to rotate, the communication pot is rotated due to the rotation of the round rod, a better communication radiation area can be adjusted and locked, the second screw rod is rotated in the second threaded hole to move, the round plate is rotated in the second circular sliding groove, the arc-shaped clamping plate is used for clamping and fixing the round block, and the adjusted position is convenient to fix.
2. According to the communication pot, the third screw rod is loosened, the rotating rod penetrates through the supporting plate in a sliding mode, so that the communication pot can rotate independently, the angle of the communication pot can be better adjusted in use, a communication radiation area can be conveniently locked and adjusted, the first friction round block is in close contact with the second friction round block through rotation of the third screw rod, the position of the rotating rod after rotation can be fixed, and the position of the communication pot after adjustment can be conveniently fixed.
3. According to the communication pot, electromagnetic waves gathered by the communication pot can be arranged through the waveguide tube and the feed source which are fixed in the communication pot, the waveguide tube transmits super information, the signal enhancement source is arranged, signals can be better enhanced in use, the communication pot is convenient to use, a plurality of drain holes are formed in the bottom of the communication pot, rainwater can be timely drained, then the communication pot can be better prevented from rusting in use through the anti-rust layer, and the service life of the communication pot is effectively prolonged in use.
4. According to the invention, the first screw rod is rotated to move downwards in the first threaded hole, the first screw rod can better go deep into the ground due to the pointed end structure at the bottom end of the first screw rod, the whole position of the device can be better fixed by using the four first screw rods, the whole device is effectively prevented from toppling, and the damage to the communication pot is reduced.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a left side cross-sectional view of the present invention;
FIG. 3 is a front view of the present invention;
FIG. 4 is an enlarged view of a portion of section A of FIG. 3 in accordance with the present invention;
FIG. 5 is an enlarged view of a portion B of FIG. 2 in section according to the present invention;
FIG. 6 is an enlarged view of the invention shown in partial section at C in FIG. 2;
FIG. 7 is a perspective view of the communication pot of the present invention;
fig. 8 is a schematic structural diagram of the communication pot of the present invention.
In the figure: 1. a base plate; 2. a first lead screw; 3. a circular ring frame; 4. fixing the ribbon board; 5. a support plate; 6. a third screw rod; 7. a communication pot; 701. an inclined support rod; 702. a signal enhancing source; 703. a feed source; 704. a drain hole; 705. a waveguide; 706. a rust-proof layer; 8. a short bar; 9. rotating the rod; 10. a first friction round block; 11. a second friction round block; 12. a round block; 13. a second lead screw; 14. a first threaded hole; 15. an arc-shaped clamping plate; 16. a second threaded hole; 17. an elastomeric sealing layer; 18. a third threaded hole; 19. a hollow cylinder; 20. a first circular chute; 21. a circular ring plate; 22. a first sliding bead; 23. a second sliding bead; 24. a round bar; 25. a round mouth; 26. a fixed block; 27. a circular plate; 28. a second circular chute.
Detailed Description
Example 1:
the preferred scheme is as shown in fig. 1 to 6, a locking device for adjusting the radiation area of a communication antenna, which comprises a base plate 1, wherein a first threaded hole 14 is formed in the top of the base plate 1 near four corners, a first screw rod 2 is connected to the inner surface wall of the first threaded hole 14 in a threaded manner, two ends of the first screw rod 2 extend to the outside of the first threaded hole 14, the bottom end of the first screw rod 2 is of a tip structure, and the first screw rod 2 is rotated so that the first screw rod 2 moves downwards in the first threaded hole 14 and can penetrate into the ground, and therefore the position of the whole device can be better fixed in use.
The welding of bottom plate 1's top has ring frame 3, ring frame 3 can be better fix hollow cylinder 19's position, the welding of the inside bottom surface of ring frame 3 has hollow cylinder 19, two first circular spouts 20 have been seted up to hollow cylinder 19's interior table wall, the equal slip of interior table wall of two first circular spouts 20 inlays and is equipped with ring plate 21, slide in the inside of first circular spout 20 through ring plate 21, thereby make round bar 24 when rotating, stability more that can be more, make round block 12 can carry out stable rotation.
The ring board 21 be provided with two altogether, and the welding has round bar 24 between the interior table wall of two ring boards 21, and the top of round bar 24 extends to hollow cylinder 19's outside, the bottom equidistance of round bar 24 slides and inlays and be equipped with a plurality of first smooth beads 22, and the bottom of a plurality of first smooth beads 22 and hollow cylinder 19's inside bottom surface slide and inlay and establish, the equal equidistance of surface of two ring boards 21 slides and inlays and be equipped with a plurality of second smooth beads 23, and the surface of a plurality of second smooth beads 23 and the interior table wall of first circular spout 20 slide and inlay and establish, through first smooth bead 22 and second smooth bead 23, when rotating round block 12, can effectual reduction frictional force, make things convenient for round block 12 to rotate, can be better adjust the direction of communication pot 7, and convenient to use.
The top end of the round rod 24 is welded with a round block 12, the outer surfaces of two sides of the ring frame 3 are both provided with second threaded holes 16, the inner surface wall of each second threaded hole 16 is in threaded connection with a second lead screw 13, one end of each second lead screw 13 extends into the ring frame 3, one end of each second lead screw 13 is slidably embedded with a fixed block 26, the outer surface of one side of each fixed block 26 is provided with a round opening 25, the inner surface wall of each round opening 25 is provided with a second circular sliding groove 28, the inner surface wall of each second circular sliding groove 28 is slidably embedded with a circular plate 27, the outer surface of one side of each circular plate 27 is welded with one end of each second lead screw 13, the outer surface of the other side of each fixed block 26 is welded with two arc-shaped clamping plates 15, the two arc-shaped clamping plates 15 are in total, the inner surface walls of the two arc-shaped clamping plates 15 are both contacted with the outer surface of the round block 12, after the round block 12 is rotated, the second lead, due to the rotation of the second screw rod 13, the circular plate 27 rotates inside the second circular sliding groove 28, the second screw rod 13 can rotate conveniently, meanwhile, due to the movement of the second screw rod 13, the arc-shaped clamping plate 15 moves, the arc-shaped clamping plate 15 tightly clamps the round block 12, and the position of the round block 12 after rotation can be better fixed in use, and the round block is convenient to use.
Example 2:
on the basis of the embodiment 1, the following technical scheme is introduced:
the preferable scheme is as shown in fig. 1 to 4, an elastic sealing layer 17 is adhered to the outer surface of the round block 12 near the top edge, one side of the elastic sealing layer 17 and the inner surface wall of the ring frame 3 near the top edge, the elastic sealing layer 17 can be stretched and deformed to facilitate the rotation of the round block 12, meanwhile, the elastic sealing layer 17 can better prevent impurities from entering the inside of the ring frame 3, fixed strips 4 are welded to the top of the round block 12 near the two side edges, the fixed strips 4 can better fix the position of the third screw rod 6, the fixed strips 4 are provided with two, a third threaded hole 18 is formed in the outer surface of one side of each of the two fixed strips 4 near the top edge, the inner surface wall of the third threaded hole 18 is in threaded connection with the third screw rod 6, both ends of the third screw rod 6 extend to the outside of the third threaded hole 18, a first friction round block 10 is welded to one end of the third screw rod 6, the two sides of the top of the round block 12 close to the center are welded with two supporting plates 5, the two supporting plates 5 are provided with two supporting plates, a rotating rod 9 penetrates through the two supporting plates 5 in a sliding manner, the two ends of the rotating rod 9 extend to the outer parts of the supporting plates 5, the two ends of the rotating rod 9 are welded with two second friction round blocks 11, the outer surface of one side of each second friction round block 11 is in contact with the outer surface of one side of each first friction round block 10, the rotating rod 9 penetrates through the two supporting plates 5 in a sliding manner, so that the communication pot 7 can independently adjust the angle, the use is convenient, after the angle of the communication pot 7 is adjusted, the third screw rod 6 is rotated, so that the third screw rod 6 rotates and moves in the third threaded hole 18, the first friction round block 10 is tightly attached to the second friction round block 11, and the position of the rotating rod 9 can be fixed, the angle of the communication pot 7 after adjustment is convenient to fix.
Example 3:
on the basis of the embodiment 1 and the embodiment 2, the following technical scheme is introduced:
the preferable scheme is as shown in fig. 7 and 8, a short rod 8 is welded on the outer surface of a rotating rod 9, a communication pot 7 is welded on the top end of the short rod 8, a waveguide 705 is arranged at the center of the inner surface wall of the communication pot 7, an integrated circuit board is arranged inside the waveguide 705, a feed source 703 is arranged at the top end of the waveguide 705, three inclined support rods 701 are equidistantly fixed on the outer surface of the waveguide 705 along the circumferential direction, the bottom ends of the three inclined support rods 701 are fixedly connected with the inner surface wall of the communication pot 7, the inclined support rods 701 can better fix the position of the waveguide 705, four signal enhancement sources 702 are equidistantly arranged on the inner surface wall of the communication pot 7 along the circumferential direction, a plurality of anti-rust layers 704 are equidistantly arranged on the inner surface wall of the communication pot 7 near the bottom edge, an anti-rust layer 706 is arranged on the outer surface of the communication pot 7, electromagnetic waves gathered by the waveguide 705 and the feed source, waveguide pipe 705 comes the conveying super information, sets up signal enhancement source 702 simultaneously, and the reinforcing signal that can be better in the use is convenient for use communication pot 7, sets up a plurality of wash ports 704 in the bottom of communication pot 7 simultaneously, can be timely discharge the rainwater, rethread antirust coat 706, the rusty condition emergence appears in the communication pot 7 that prevents that can be better in the use, the effectual life who improves communication pot 7 in the use.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. Locking device for the adjustment of the radiation area of a communication antenna, comprising a base plate (1), characterized in that: the bottom plate (1) is provided with a circular frame (3), the bottom surface inside the circular frame (3) is provided with a hollow cylinder (19), the inner surface wall of the hollow cylinder (19) is provided with two first circular sliding chutes (20), and circular plates (21) are embedded in the inner surface walls of the two first circular sliding chutes (20) in a sliding manner; the two circular ring plates (21) are arranged, a circular rod (24) is arranged between the inner surface walls of the two circular ring plates (21), the top end of the circular rod (24) extends to the outside of the hollow cylinder (19), a plurality of first sliding balls (22) are embedded in the bottom of the circular rod (24) in an equidistant sliding mode, the bottoms of the first sliding balls (22) are embedded in the inner bottom surface of the hollow cylinder (19) in a sliding mode, a plurality of second sliding balls (23) are embedded in the outer surfaces of the two circular ring plates (21) in an equidistant sliding mode, and the outer surfaces of the second sliding balls (23) are embedded in the inner surface walls of the first circular sliding grooves (20) in a sliding mode; a round block (12) is arranged at the top end of the round rod (24), second threaded holes (16) are formed in the outer surfaces of the two sides of the circular ring frame (3), and second screw rods (13) are connected to the inner surface wall threads of the second threaded holes (16); one end of the second screw rod (13) extends into the circular ring frame (3), and a fixed block (26) is embedded into one end of the second screw rod (13) in a sliding manner; the outer surface of one side of the fixed block (26) is provided with a round opening (25), the inner surface wall of the round opening (25) is provided with a second circular sliding chute (28), the inner surface wall of the second circular sliding chute (28) is embedded with a circular plate (27) in a sliding manner, the outer surface of one side of the circular plate (27) is arranged at one end of the second screw rod (13), the outer surface of the other side of the fixed block (26) is provided with two arc-shaped clamping plates (15), and the inner surface walls of the two arc-shaped clamping plates (15) are in contact with the outer surface of the round block (12);
two supporting plates (5) are arranged on two sides of the top of the round block (12) close to the center, two supporting plates (5) are arranged, a rotating rod (9) penetrates through the two supporting plates (5) in a sliding mode, two ends of the rotating rod (9) extend to the outer portions of the supporting plates (5), second friction round blocks (11) are arranged at two ends of the rotating rod (9), and the outer surface of one side of each second friction round block (11) is in contact with the outer surface of one side of each first friction round block (10);
the surface of dwang (9) is equipped with quarter butt (8), the top of quarter butt (8) is equipped with communication pot (7), the interior table wall center department of communication pot (7) is provided with waveguide pipe (705), the top of waveguide pipe (705) is provided with feed (703), the surface of waveguide pipe (705) is fixed with three bracing piece (701) to one side along the circumferencial direction equidistance, and the bottom of three bracing piece to one side (701) and the interior table wall fixed connection of communication pot (7).
2. The locking device for communication antenna radiation area adjustment according to claim 1, characterized in that: the outer surface of the round block (12) is adhered with an elastic sealing layer (17) close to the top edge, and one side of the elastic sealing layer (17) is adhered with the inner surface wall of the round ring frame (3) close to the top edge.
3. The locking device for communication antenna radiation area adjustment according to claim 1, characterized in that: the top of circle piece (12) is close to both sides edge and all is equipped with fixed slat (4), fixed slat (4) are provided with two altogether, and one side surface of two fixed slats (4) is close to top edge and all has seted up third screw hole (18), the interior table wall threaded connection of third screw hole (18) has third lead screw (6), and the both ends of third lead screw (6) all extend to the outside of third screw hole (18), the one end of third lead screw (6) is equipped with first friction circle piece (10).
4. The locking device for communication antenna radiation area adjustment according to claim 1, characterized in that: the inner surface wall of the communication pot (7) is provided with four signal enhancing sources (702) at equal intervals along the circumferential direction, the inner surface wall of the communication pot (7) is provided with a plurality of drain holes (704) at equal intervals near the bottom edge, and the outer surface of the communication pot (7) is provided with an anti-rust layer (706).
5. The locking device for communication antenna radiation area adjustment according to claim 1, characterized in that: first screw hole (14) have all been seted up near four corners at the top of bottom plate (1), the interior table wall threaded connection of first screw hole (14) has first lead screw (2), and the both ends of first lead screw (2) all extend to the outside of first screw hole (14) to the bottom of first lead screw (2) is most advanced structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911201932.1A CN110854502B (en) | 2019-11-29 | 2019-11-29 | Locking device for adjusting radiation area of communication antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911201932.1A CN110854502B (en) | 2019-11-29 | 2019-11-29 | Locking device for adjusting radiation area of communication antenna |
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| Publication Number | Publication Date |
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| CN110854502A CN110854502A (en) | 2020-02-28 |
| CN110854502B true CN110854502B (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911201932.1A Active CN110854502B (en) | 2019-11-29 | 2019-11-29 | Locking device for adjusting radiation area of communication antenna |
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| US9359794B2 (en) * | 2014-03-12 | 2016-06-07 | August Home, Inc. | Method for operating an intelligent door knob |
| CN110199235A (en) * | 2017-04-21 | 2019-09-03 | 深圳市大疆创新科技有限公司 | A kind of antenna module and UAV system for UAV Communication |
| CN209329137U (en) * | 2018-12-13 | 2019-08-30 | 上海东洲罗顿通信股份有限公司 | A kind of mobile communication antenna with portable fixing effect |
| CN209461626U (en) * | 2019-01-31 | 2019-10-01 | 廊坊华昌物联网科技有限公司 | A kind of RFID antenna production equipment based on Internet of Things |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2620368A1 (en) * | 2012-01-30 | 2013-07-31 | Eurocopter | Communication device, aircraft rotor and aircraft |
| CN109286058A (en) * | 2018-09-25 | 2019-01-29 | 郑州讯轨通信科技有限公司 | A kind of fixed device of rural electricity consumption view antenna receiver facilitating adjusting |
| CN209434395U (en) * | 2018-11-28 | 2019-09-24 | 西安华运天成通讯科技有限公司 | A kind of low elevation angle high-gain circular polarisation microcell antenna in broadband for satellite communication |
| CN208797157U (en) * | 2018-12-24 | 2019-04-26 | 四川星空年代网络通信有限公司 | A kind of satellite antenna of conveniently adjusting angle and installation |
| CN209487697U (en) * | 2019-04-13 | 2019-10-11 | 石家庄泽辰新能源科技有限公司 | A kind of communication engineering antenna holder |
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| CN110854502A (en) | 2020-02-28 |
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