CN112490664B - High-gain low-noise short wave loop antenna - Google Patents
High-gain low-noise short wave loop antenna Download PDFInfo
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- CN112490664B CN112490664B CN202011000345.9A CN202011000345A CN112490664B CN 112490664 B CN112490664 B CN 112490664B CN 202011000345 A CN202011000345 A CN 202011000345A CN 112490664 B CN112490664 B CN 112490664B
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- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 6
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000011241 protective layer Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 230000004044 response Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 239000011324 bead Substances 0.000 description 3
- 230000001902 propagating effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
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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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/526—Electromagnetic shields
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Support Of Aerials (AREA)
Abstract
The invention discloses a high-gain low-noise short-wave loop antenna which comprises a base and a loop antenna, wherein a matching box is rotatably installed at the upper end of the base, a groove block is integrally formed at the upper end of the matching box, an antenna amplifier is fixedly clamped inside the groove block through a clamping component, two groups of fixed blocks are symmetrically arranged on the side edge of the matching box, a connecting female head electrically connected with the matching box is arranged inside the fixed blocks, two ends of the loop antenna are respectively and fixedly installed on the fixed blocks, two ends of the loop antenna are electrically connected with a connecting male head, and the connecting male head is inserted into the connecting female head. Compared with the existing whip antenna, the whip antenna has better anti-interference performance and omni-directionality, effectively resists electromagnetic interference and power noise, has better performance under the condition of severe electromagnetic environment, and can better adapt to the outdoor environment at low cost by encapsulating and protecting the aluminum alloy shell and the circuit.
Description
Technical Field
The invention relates to the technical field of communication antennas, in particular to a high-gain low-noise short-wave loop antenna.
Background
The antenna is a converter which converts a guided wave propagating on a transmission line into an electromagnetic wave propagating in an unbounded medium or vice versa; means for transmitting or receiving electromagnetic waves in a radio device; engineering systems such as radio communication, broadcasting, television, radar, navigation, electronic countermeasure, remote sensing, radio astronomy and the like all rely on antennas to work when electromagnetic waves are used for transmitting information; furthermore, in terms of transferring energy with electromagnetic waves, non-signal energy radiation also requires an antenna; the common antenna has reversibility, namely, the same antenna can be used as a transmitting antenna and a receiving antenna; the same antenna is the same as the basic characteristic parameter for transmission or reception; the reciprocity theorem of the antenna is that in the communication antenna, a short wave antenna is a common one, the short wave antenna refers to a transmitting or receiving antenna working in a short wave band of 1-30MHz, the transmission of the short wave is mainly divided into two types according to different transmission paths, one type is reflected by an ionized layer and is called sky wave; the other is ground waves transmitted close to the ground surface.
The existing communication antenna is mostly configured as a whip antenna, the anti-interference performance and the omni-directionality of the existing communication antenna are weak points, and the existing communication antenna generates large noise when in use, so that a high-gain low-noise short-wave loop antenna needs to be provided.
Disclosure of Invention
The invention aims to provide a high-gain low-noise short-wave loop antenna which has better anti-interference performance and omni-directionality compared with the existing whip antenna, effectively resists electromagnetic interference and power supply noise, and has better performance under the condition of severe electromagnetic environment so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a high-gain low-noise short-wave loop antenna comprises a base and a loop antenna, wherein a matching box is rotatably mounted at the upper end of the base, a groove block is integrally formed at the upper end of the matching box, an antenna amplifier is fixedly clamped in the groove block through a clamping assembly, two groups of fixed blocks are symmetrically arranged on the side edge of the matching box, a female connecting head electrically connected with the matching box is arranged in each fixed block, two ends of the loop antenna are respectively and fixedly mounted on the fixed blocks, two ends of the loop antenna are electrically connected with a male connecting head, the male connecting head is inserted in the female connecting head, and two ends of the loop antenna are respectively and fixedly mounted in the fixed blocks through fixing screws; the fixing block is a concave fixing block, two groups of first through holes are symmetrically formed in the side wall of the fixing block, second through holes which are coaxial with the two groups of first through holes are formed in the side wall of the annular antenna, and one end of the fixing screw penetrates through the first through holes and the second through holes and is locked and fixed through a locking nut;
the clamping assembly comprises spring balls, clamping blocks and arc-shaped grooves formed in the side walls of the clamping blocks, the clamping blocks are annular clamping blocks, the clamping blocks are fixedly mounted on the outer wall of the antenna amplifier, four groups of the spring balls are arranged, and the four groups of the spring balls are fixedly mounted on the inner wall of each groove block;
the loop antenna includes the shell and with be connected public first electric connection's wire, fixed mounting has the ply-yarn drill on the inner wall of shell, the wire joint is fixed in on the ply-yarn drill, the inside of shell is provided with the encapsulating protective layer.
Preferably, the upper end of the base is embedded and fixed with a turntable bearing, the upper end of the turntable bearing is fixedly provided with a rotating plate, and the matching box is fixedly arranged on the upper surface of the rotating plate.
Preferably, the upper end of the base is provided with mounting holes for the fixing nails to pass through, and the mounting holes are not less than two groups.
Preferably, the spring ball includes steel ball, sliding block, compression spring and baffle, the steel ball laminating is in one side of sliding block, one side fixed connection in compression spring's one end of sliding block, the baffle is provided with two sets ofly, sliding block and compression spring all are located between two sets of baffles.
Preferably, the shell is made of aluminum alloy, and the diameter of the shell is 0.8m-1.2m.
Preferably, the male connector and the female connector are BNC connectors, and the BNC connectors can isolate video input signals, so that mutual interference among the signals is reduced, the signal bandwidth is larger than that of a common D-SUB, and the optimal signal response effect can be achieved.
Preferably, a rubber pad is fixedly bonded to the inner bottom of the groove block, the rubber pad is an elastic rubber pad with a rough surface, and the lower end of the antenna amplifier is attached to the upper surface of the rubber pad.
Compared with the prior art, the invention has the beneficial effects that:
1. compared with the existing whip antenna, the whip antenna has better anti-interference performance and omni-directionality, effectively resists electromagnetic interference and power noise, has better performance under the condition of severe electromagnetic environment, and can better adapt to outdoor environment at low cost by encapsulating and protecting the aluminum alloy shell and the circuit;
2. according to the antenna amplifier, the groove block is integrally formed at the upper end of the matching box, the antenna amplifier is fixedly clamped in the groove block through the clamping component, the clamping component comprises the spring ball, the clamping block and the arc-shaped groove formed in the side wall of the clamping block, and the clamping block is fixedly arranged on the outer wall of the antenna amplifier, so that the antenna amplifier is convenient to disassemble, assemble, maintain and replace.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partial cross-sectional view taken at A of FIG. 1 in accordance with the present invention;
FIG. 3 is an enlarged view of the structure at B in FIG. 1 according to the present invention;
FIG. 4 is a schematic structural diagram of a base according to the present invention;
FIG. 5 is a schematic view of the structure of the spring bead of the present invention.
In the figure: 1. a base; 2. a matching box; 3. a groove block; 4. a clamping assembly; 5. an antenna amplifier; 6. a loop antenna; 7. connecting the female head; 8. connecting a male head; 9. a spring bead; 10. a clamping block; 11. an arc-shaped slot; 12. a rubber pad; 13. a housing; 14. a wire; 15. a glue pouring protective layer; 16. a line card; 17. a turntable bearing; 18. a rotating plate; 19. a set screw; 20. a first through hole; 21. a second through hole; 22. mounting holes; 23. steel balls; 24. a slider; 25. a compression spring; 26. a baffle plate; 27. and (5) fixing blocks.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme that:
a high-gain low-noise short-wave loop antenna comprises a base 1 and a loop antenna 6, as shown in figures 1 and 3, a matching box 2 is rotatably installed at the upper end of the base 1, a groove block 3 is integrally formed at the upper end of the matching box 2, an antenna amplifier 5 is fixedly clamped inside the groove block 3 through a clamping component 4, two groups of fixing blocks 27 are symmetrically arranged on the side edge of the matching box 2, a connecting female head 7 electrically connected with the matching box 2 is arranged inside the fixing blocks 27, two ends of the loop antenna 6 are respectively and fixedly installed on the fixing blocks 27, two ends of the loop antenna 6 are electrically connected with a connecting male head 8, the connecting male head 8 is inserted into the connecting female head 7, two ends of the loop antenna 6 are respectively and fixedly installed inside the fixing blocks 27 through fixing screws 19, a shell 13 is an aluminum alloy shell, and the diameter of the shell 13 is 0.8m-1.2m;
the male connector 8 and the female connector 7 adopt BNC type connectors which can isolate video input signals, so that the mutual interference among the signals is reduced, the signal bandwidth is larger than that of a common D-SUB, and the optimal signal response effect can be achieved;
as shown in fig. 2, the fixing block 27 is a concave fixing block, two sets of first through holes 20 are symmetrically formed in the side wall of the fixing block 27, a second through hole 21 coaxial with the two sets of first through holes 20 is formed in the side wall of the loop antenna 6, and one end of the fixing screw 19 passes through the first through hole 20 and the second through hole 21 and is locked and fixed by a locking nut;
through the design, two ends of the loop antenna 6 are respectively and fixedly arranged inside the fixed block 27 through the fixing screws 19, the existing integral forming arrangement or welding arrangement is replaced, and the loop antenna 6 is convenient to detach for maintenance or replacement after being used for a long time;
the clamping assembly 4 comprises spring balls 9, clamping blocks 10 and arc-shaped grooves 11 formed in the side walls of the clamping blocks 10, the clamping blocks 10 are annular clamping blocks, the clamping blocks 10 are fixedly mounted on the outer wall of the antenna amplifier 5, four groups of spring balls 9 are arranged, and the four groups of spring balls 9 are fixedly mounted on the inner wall of the groove block 3;
through the design, the antenna amplifier 5 is convenient to disassemble and assemble, so that the antenna amplifier 5 is more convenient to maintain or replace at a later stage;
the loop antenna 6 comprises a shell 13 and a lead 14 electrically connected with the connecting male head 8, a line card 16 is fixedly mounted on the inner wall of the shell 13, the lead 14 is clamped and fixed on the line card 16, and a glue-pouring protective layer 15 is arranged inside the shell 13;
through the design, the glue-pouring protective layer 15 plays a certain role in protecting the lead 14, so that the service life of the lead 14 is prolonged;
as shown in fig. 4, a turntable bearing 17 is fixedly embedded in the upper end of the base 1, a rotating plate 18 is fixedly mounted at the upper end of the turntable bearing 17, and the matching box 2 is fixedly mounted on the upper surface of the rotating plate 18;
a rubber pad 12 is fixedly bonded to the inner bottom of the groove block 3, the rubber pad 12 is an elastic rubber pad with a rough surface, and the lower end of the antenna amplifier 5 is attached to the upper surface of the rubber pad 12;
through the design, the rubber pad 12 at the bottom in the groove block 3 plays a certain role in vibration reduction and skid resistance on the antenna amplifier 5;
the upper end of the base 1 is provided with mounting holes 22 for fixing nails to pass through, and the mounting holes 22 are provided with not less than two groups;
as shown in fig. 5, the spring ball 9 includes a steel ball 23, a sliding block 24, a compression spring 25 and two sets of baffles 26, the steel ball 23 is attached to one side of the sliding block 24, one side of the sliding block 24 is fixedly connected to one end of the compression spring 25, and the two sets of baffles 26 are provided, and the sliding block 24 and the compression spring 25 are both located between the two sets of baffles 26;
the antenna amplifier 5 includes three interfaces: the antenna interface, the receiver interface and the power supply interface; the power supply adopts 12V direct current voltage, the feeder line provides power, and three different plugs are replaced to adapt to different power jacks; the power supply voltage can be used in 100V-240V and 50Hz-60Hz to adapt to the AC voltage standards of different countries and regions; if the battery is used for supplying power, the negative pole of one end of the feeder line is connected with the negative pole of the battery, the positive pole is connected with the positive pole of the battery, the other end is connected into the amplifier by using a round power plug, the voltage of the battery must be 12V, and the feeder line must be provided with a proper fuse for safety;
after entering the IC-718, the 5MHz high-frequency signal received by the loop antenna 6 is converted into a low-intermediate frequency signal of 455kHz through two times of frequency mixing processing, and a signal with higher frequency is converted into a signal with lower frequency through a frequency mixing chip, but the information carried by the original signal is not changed and still remains on the low-frequency signal after frequency mixing, so that the 455kHz signal still carries the information carried by the original 5MHz high-frequency signal;
the loop antenna 6 still has good receiving effect in a city area with complex electromagnetic environment, the size is small, the loop antenna is convenient to carry when going out for experiment, the performance of the antenna amplifier 5 is strong, the loop antenna can be placed indoors, the waterproof design is omitted, and the loop antenna is safe and reliable
The structure principle is as follows: compared with the existing whip antenna, the short-wave loop antenna has better anti-interference performance and omni-directionality, effectively resists electromagnetic interference and power noise, better performs under the condition of severe electromagnetic environment, and can better adapt to the outdoor environment at low cost by encapsulating the aluminum alloy shell and the circuit to protect the lead 14; have slot block 3 through the upper end integrated into one piece at matching box 2 to be fixed with antenna amplifier 5 through 4 joints of joint subassembly in the inside of slot block 3, and set up joint subassembly 4 including spring bead 9, fixture block 10 and set up the arc wall 11 on the fixture block 10 lateral wall, and with fixture block 10 fixed mounting on antenna amplifier 5's outer wall, be convenient for antenna amplifier 5 dismouting maintain and change.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a high-gain low noise shortwave loop antenna, includes base (1) and loop antenna (6), its characterized in that: the antenna comprises a base (1), a matching box (2) is rotatably mounted at the upper end of the base (1), a groove block (3) is integrally formed at the upper end of the matching box (2), an antenna amplifier (5) is clamped and fixed in the groove block (3) through a clamping component (4), two groups of fixing blocks (27) are symmetrically arranged on the side edge of the matching box (2), a female connecting head (7) electrically connected with the matching box (2) is arranged in each fixing block (27), two ends of a loop antenna (6) are fixedly mounted on the fixing blocks (27) respectively, two ends of the loop antenna (6) are electrically connected with a male connecting head (8), the male connecting head (8) is inserted in the female connecting head (7), and two ends of the loop antenna (6) are fixedly mounted in the fixing blocks (27) through fixing screws (19) respectively; the fixing block (27) is a concave fixing block, two groups of first through holes (20) are symmetrically formed in the side wall of the fixing block (27), a second through hole (21) coaxial with the two groups of first through holes (20) is formed in the side wall of the annular antenna (6), and one end of the fixing screw (19) penetrates through the first through hole (20) and the second through hole (21) and is locked and fixed through a locking nut;
the clamping assembly (4) comprises spring balls (9), clamping blocks (10) and arc-shaped grooves (11) formed in the side walls of the clamping blocks (10), the clamping blocks (10) are annular clamping blocks, the clamping blocks (10) are fixedly installed on the outer wall of the antenna amplifier (5), the spring balls (9) are provided with four groups, and the four groups of spring balls (9) are fixedly installed on the inner wall of the groove block (3);
annular antenna (6) include shell (13) and with be connected public first (8) electric connection's wire (14), fixed mounting has ply-yarn drill (16) on the inner wall of shell (13), wire (14) joint is fixed in on ply-yarn drill (16), the inside of shell (13) is provided with encapsulating protective layer (15).
2. The high-gain low-noise short-wave loop antenna of claim 1, characterized in that: the upper end of the base (1) is fixedly embedded with a turntable bearing (17), the upper end of the turntable bearing (17) is fixedly provided with a rotating plate (18), and the matching box (2) is fixedly arranged on the upper surface of the rotating plate (18).
3. The high-gain low-noise short wave loop antenna of claim 1, wherein: the upper end of the base (1) is provided with mounting holes (22) for fixing nails to pass through, and the mounting holes (22) are not less than two groups.
4. The high-gain low-noise short wave loop antenna of claim 1, wherein: spring ball (9) include steel ball (23), sliding block (24), compression spring (25) and baffle (26), steel ball (23) are laminated in one side of sliding block (24), one side fixed connection in compression spring (25) of sliding block (24) one end, baffle (26) are provided with two sets ofly, sliding block (24) and compression spring (25) all are located between two sets of baffle (26).
5. The high-gain low-noise short wave loop antenna of claim 1, wherein: the shell (13) is an aluminum alloy shell, and the diameter of the shell (13) is 0.8-1.2 m.
6. The high-gain low-noise short-wave loop antenna of claim 1, characterized in that: the male connector (8) and the female connector (7) adopt BNC type connectors, the BNC connectors can isolate video input signals, so that mutual interference among the signals is reduced, the signal bandwidth is larger than that of a common D-SUB, and the optimal signal response effect can be achieved.
7. The high-gain low-noise short-wave loop antenna of claim 1, characterized in that: a rubber pad (12) is fixedly bonded to the inner bottom of the groove block (3), the rubber pad (12) is an elastic rubber pad with a rough surface, and the lower end of the antenna amplifier (5) is attached to the upper surface of the rubber pad (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011000345.9A CN112490664B (en) | 2020-09-22 | 2020-09-22 | High-gain low-noise short wave loop antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011000345.9A CN112490664B (en) | 2020-09-22 | 2020-09-22 | High-gain low-noise short wave loop antenna |
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| Publication Number | Publication Date |
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| CN112490664A CN112490664A (en) | 2021-03-12 |
| CN112490664B true CN112490664B (en) | 2022-12-13 |
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| CN202011000345.9A Active CN112490664B (en) | 2020-09-22 | 2020-09-22 | High-gain low-noise short wave loop antenna |
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| CN117498031B (en) * | 2024-01-03 | 2024-04-09 | 南京震冠电子科技有限公司 | Radio frequency front end assembly and system of loop control antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2837985B1 (en) * | 2002-04-02 | 2004-05-21 | Commissariat Energie Atomique | MORCELEE RECEIVER ANTENNA |
| US7671819B2 (en) * | 2007-07-24 | 2010-03-02 | Sony Ericsson Mobile Communications Ab | Antenna assembly |
| US9246221B2 (en) * | 2011-03-07 | 2016-01-26 | Apple Inc. | Tunable loop antennas |
| CN202111207U (en) * | 2011-04-21 | 2012-01-11 | 国营第三八八厂 | Short wave receiving antenna of three channel integration |
| CN204464477U (en) * | 2015-04-08 | 2015-07-08 | 西安星网天线技术有限公司 | Automatic tuning folding short-wave reception loop antenna |
| KR102030536B1 (en) * | 2018-11-22 | 2019-10-10 | 한국항공우주연구원 | Antenna fixing device |
| CN109728402A (en) * | 2018-12-19 | 2019-05-07 | 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） | Antenna assembly |
| CN210576382U (en) * | 2019-05-24 | 2020-05-19 | 黄飞琴 | Antenna supporting device for transmitting broadcast television signals |
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