CN220439862U - Circular polarization omnidirectional antenna device - Google Patents
Circular polarization omnidirectional antenna device Download PDFInfo
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- CN220439862U CN220439862U CN202322116273.XU CN202322116273U CN220439862U CN 220439862 U CN220439862 U CN 220439862U CN 202322116273 U CN202322116273 U CN 202322116273U CN 220439862 U CN220439862 U CN 220439862U
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- antenna
- circular polarization
- circularly polarized
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- omnidirectional
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- 230000010287 polarization Effects 0.000 title claims abstract description 33
- 230000003071 parasitic effect Effects 0.000 claims description 10
- 239000004593 Epoxy Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 abstract description 9
- 238000013461 design Methods 0.000 abstract description 4
- 239000011159 matrix material Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 230000003321 amplification Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 229920006335 epoxy glue Polymers 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
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Abstract
The utility model discloses a circularly polarized omnidirectional antenna device, which comprises an antenna housing and a base, wherein the base is connected to the bottom of the antenna housing, the bottom of the base is provided with an output socket, one end of the output socket is used for being connected with other equipment, and the other end of the output socket is connected with an amplifier box; the base upper portion is provided with qxcomm technology dipole antenna and circular polarization auxiliary antenna, and circular polarization auxiliary antenna connects between radome and base, and qxcomm technology dipole antenna sets up in circular polarization auxiliary antenna middle part. By adopting the structure, the utility model adopts the design of the omni-directional dipole antenna and the circular polarization auxiliary antenna, and the omni-directional dipole antenna is equivalent to a pair of orthogonal dipole antennas after passing through the circular polarization auxiliary antenna, so that the directional pattern of the antenna has horizontal omni-directional characteristic. The number of antennas and the rear-end radio frequency matrix is reduced, the complexity of use control is reduced, and the cost of monitoring equipment is reduced.
Description
Technical Field
The utility model relates to the technical field of omni-directional antenna structures, in particular to a circularly polarized omni-directional antenna device.
Background
The circularly polarized antenna can receive any polarized incoming wave and the radiation wave can also be received by any polarized antenna, so the circularly polarized wave is more and more widely applied. Meanwhile, the rotation direction of the circularly polarized wave is reversed after the circularly polarized wave is reflected, and electromagnetic waves with different rotation directions are well isolated, so that the anti-reflection capability of the circularly polarized wave is high. The circularly polarized antenna generally adopts microstrip antenna and spiral antenna design, and the microstrip antenna and the spiral antenna belong to directional antennas, have the advantages of high gain, good directivity and the like, and are widely used in the communication field. In the communication field, the incoming wave direction is known in advance, so that the antenna can be adjusted to align with the incoming wave or a circular array is formed by adopting a plurality of antennas, the receiving of incoming wave signals in a plurality of directions is realized through a control switch and a matrix, and the number of channels is limited by radio frequency hardware. In the field of radio monitoring, since incoming wave signals are not known in advance, a monitoring blind area exists by adopting a directional antenna at present, and therefore, the monitoring by adopting a circularly polarized omnidirectional antenna has obvious advantages. However, in the prior art, the number of antennas and the number of back-end radio frequency matrixes are large, so that the complexity of use control is increased, and finally, the monitoring cost is always high.
Disclosure of Invention
The utility model aims to provide a circularly polarized omnidirectional antenna device which solves the problems that in the prior art, the number of antennas and rear-end radio frequency matrixes is large, and the complexity of use control is increased.
The embodiment of the utility model is realized by the following technical scheme:
the circular polarization omnidirectional antenna device comprises an antenna housing and a base, wherein the base is connected to the bottom of the antenna housing, an output socket is arranged at the bottom of the base, one end of the output socket is used for being connected with other equipment, and the other end of the output socket is connected with an amplifier box;
the antenna is characterized in that an omni-directional dipole antenna and a circular polarization auxiliary antenna are arranged on the upper portion of the base, the circular polarization auxiliary antenna is connected between the antenna housing and the base, and the omni-directional dipole antenna is arranged in the middle of the circular polarization auxiliary antenna.
In an embodiment of the utility model, the antenna further comprises a fixing plate, wherein the fixing plate is arranged at the top of the inner side of the antenna housing, and one ends of the omni-directional dipole antenna and the circularly polarized auxiliary antenna are connected with the bottom of the fixing plate.
In an embodiment of the utility model, the antenna further comprises a dielectric cavity arranged at the upper part of the base, and one end of the omni-directional dipole antenna and the circularly polarized auxiliary antenna, which is far away from the fixed plate, is connected with the upper part of the dielectric cavity.
In an embodiment of the utility model, a protruding block is arranged in the middle of the fixing plate, a first limit groove is arranged in the protruding block, and the omni-directional dipole antenna is arranged in the first limit groove.
In an embodiment of the present utility model, a plurality of second limiting grooves are disposed on the dielectric cavity, and one ends of the omni-directional dipole antenna and the circularly polarized auxiliary antenna are connected with even number of second limiting grooves.
In one embodiment of the present utility model, the circularly polarized auxiliary antenna includes a cylinder and a plurality of sets of obliquely arranged parasitic elements disposed on the cylinder.
In an embodiment of the utility model, the inclination angle of the parasitic element is 45 ° to 55 °.
In one embodiment of the utility model, the radome is made of epoxy glass composite material.
The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:
by adopting the structure, the utility model adopts the design of the omni-directional dipole antenna and the circular polarization auxiliary antenna, and the omni-directional dipole antenna is equivalent to a pair of orthogonal dipole antennas after passing through the circular polarization auxiliary antenna, so that the directional pattern of the antenna has horizontal omni-directional characteristic. The length of the parasitic element is optimized, so that the circular polarization performance of the antenna is best, the gain of the antenna reaches about 2dB, and the axial ratio is smaller than 3dB. The novel L-band circularly polarized omnidirectional antenna provides a better solution for radio signal monitoring, reduces the number of antennas and rear-end radio frequency matrixes, reduces the complexity of use control and reduces the cost of monitoring equipment. Meanwhile, the antenna has small size and necessary sensitivity through signal amplification; meanwhile, as only one pair of antennas is adopted to cover all horizontal directions, the antenna is particularly suitable for portable, vehicle-mounted and fixed stations.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic diagram of an output socket according to the present utility model;
FIG. 3 is a schematic cross-sectional view of the present utility model;
FIG. 4 is a schematic view of the structure of the base of the present utility model;
FIG. 5 is a schematic view of a circularly polarized auxiliary antenna according to the present utility model;
fig. 6 is a schematic structural diagram of an omni-directional dipole antenna according to the present utility model;
FIG. 7 is a schematic diagram of a dielectric cavity of the present utility model;
fig. 8 is a gain diagram of a circularly polarized omnidirectional antenna according to the present utility model;
fig. 9 is a standing wave ratio diagram of a circularly polarized omnidirectional antenna according to the present utility model;
fig. 10 is an axial ratio diagram of a circularly polarized omnidirectional antenna of the present utility model;
fig. 11 is a schematic three-dimensional view of a circularly polarized omnidirectional antenna according to the present utility model;
icon: the antenna comprises a 1-omni-directional dipole antenna, a 2-circularly polarized auxiliary antenna, a 3-dielectric cavity, a 4-antenna housing, a 5-base, a 6-amplifier box and a 7-output socket.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Referring to fig. 1-7, the present utility model provides a circularly polarized omnidirectional antenna apparatus, which includes a radome 4 and a base 5, wherein the base 5 is connected to the bottom of the radome 4, the bottom of the base 5 is provided with an output socket 7, one end of the output socket 7 is used for being connected with other devices, and the other end is connected with an amplifier box 6.
The radome 4 is made of epoxy glass composite materials, and is formed by processing a die, so that the radome 4 has good wave-transmitting performance, the antenna performance is ensured, and the radome 4 is mainly used for sealing an antenna and transmitting electromagnetic waves.
The base 5 is made of an aluminum alloy composite material, and is formed by processing and surface treatment. The mounting plate is made of aluminum alloy plate with the thickness of 5mm and is used for mounting the antenna signal output socket 7 and the flange for mounting the antenna.
The amplifying circuit of the amplifier box 6 mainly comprises a filter, a limiter and a 3-level low-noise amplifier, and the amplifier box 6 is formed by processing an aluminum alloy material. The amplifier is mainly used for signal amplification, ensures small input noise, good standing wave and small amplitude-frequency distortion, and improves the sensitivity of the antenna.
The radio frequency output socket 7 adopts 1N-50 KF to output radio frequency signals received by the circularly polarized antenna respectively. The radio frequency socket is used for supplying power to the amplifier at the same time.
The upper portion of the base 5 is provided with an omni-directional dipole antenna 1 and a circular polarization auxiliary antenna 2, the circular polarization auxiliary antenna 2 is connected between the antenna housing 4 and the base 5, and the omni-directional dipole antenna 1 is arranged in the middle of the circular polarization auxiliary antenna 2.
Specifically, the size of the omni-directional dipole antenna 1 is designed according to the working frequency, and is optimized by adopting CST simulation, and the scheme is an L-band antenna. The antenna adopts the design of printed board, and length 122mm, width 12mm, thickness 1.6mm.
The novel L-band circular polarization omnidirectional antenna is designed by adopting an omnidirectional dipole antenna 1 and a circular polarization auxiliary antenna 2, and the omnidirectional dipole antenna 1 is equivalent to a pair of orthogonal dipole antennas after passing through the circular polarization auxiliary antenna 2, so that the directional pattern of the antenna has horizontal omnidirectional characteristics. The length of the parasitic element is optimized, so that the circular polarization performance of the antenna is best, the gain of the antenna reaches about 2dB, and the axial ratio is smaller than 3dB. The novel L-band circularly polarized omnidirectional antenna provides a better solution for radio signal monitoring, reduces the number of antennas and rear-end radio frequency matrixes, reduces the complexity of use control and reduces the cost of monitoring equipment. Meanwhile, the antenna has small size and necessary sensitivity through signal amplification; meanwhile, as only one pair of antennas is adopted to cover all horizontal directions, the antenna is particularly suitable for portable, vehicle-mounted and fixed stations.
In an embodiment of the present utility model, the antenna further includes a fixing plate, the fixing plate is disposed at the top of the inner side of the radome 4, one ends of the omni-directional dipole antenna 1 and the circular polarization auxiliary antenna 2 are connected with the bottom of the fixing plate, the fixing plate may be mainly used for fixing the upper parts of the omni-directional dipole antenna 1 and the circular polarization auxiliary antenna 2, specifically, a protruding block is disposed in the middle of the fixing plate, a first limit groove is disposed in the protruding block, and the omni-directional dipole antenna 1 is disposed in the first limit groove.
In an embodiment of the present utility model, the antenna further includes a dielectric cavity 3 disposed at an upper portion of the base 5, one end of the omni-directional dipole antenna 1 and the circular polarization auxiliary antenna 2, which is far away from the fixing plate, is connected to an upper portion of the dielectric cavity 3, the dielectric cavity 3 may fix lower portions of the omni-directional dipole antenna 1 and the circular polarization auxiliary antenna 2, specifically, a plurality of second limiting grooves are disposed on the dielectric cavity 3, and one ends of the omni-directional dipole antenna 1 and the circular polarization auxiliary antenna 2 are connected to even second limiting grooves. In addition, the dielectric cavity 3 is mainly composed of epoxy glass cloth tubes and is used for supporting the antenna and the auxiliary antenna, ensuring that the positions of the antenna and the auxiliary antenna are unchanged and electrically connecting the insulating antenna and the mounting plate.
In an exemplary embodiment of the present utility model, the circularly polarized auxiliary antenna 2 includes a cylinder and several groups of obliquely arranged parasitic elements disposed on the cylinder, the parasitic elements are six groups, the auxiliary antenna is designed by using a printed board with a thickness of 0.254, and is fixed on the cylinder, the inclination angle of the parasitic elements is 50 °, and the material of the cylinder is preferably polytetrafluoroethylene.
The linear polarized wave radiated by the dipole antenna is divided into two orthogonal electric fields by the auxiliary antenna, and the circular polarized wave is synthesized in the far field. The signal receiving principle is opposite, and after the L-band circularly polarized signal received by the circularly polarized antenna, the signal is amplified and output through out-of-band filtering and amplitude limiting. The novel L-band circularly polarized antenna is adopted to realize horizontal omnidirectional signal reception.
In a specific installation implementation mode, a 50-086 semi-flexible cable is welded at the feed end of the omnidirectional dipole antenna 1, and the standing wave of the antenna is adjusted to be within 2.5. The auxiliary antenna is fixed to the cylinder with epoxy glue. The omnidirectional dipole antenna 1 and the auxiliary antenna are mounted on the dielectric cavity 3 and fixed by glue and screws. The amplifier module is assembled into an amplifier box 6 after being debugged, and the amplifier box is fixed by screws, and a cover plate is covered. And 1N-50 KF radio frequency socket is arranged on the base 5, the amplifier is arranged on the base 5, and the amplifier is fixed by a screw and then is filled into the medium cavity 3. The antenna input and the amplifier input are connected by a radio frequency cable. The antenna housing 4 is connected with the base 5, the medium cavity 3 and the amplifier are arranged in the antenna housing 4, the antenna housing 4 is placed on the mounting plate for sealing, and the mounting plate is fixed by screws.
The novel L-band circular polarization omnidirectional antenna fully utilizes the horizontal omnidirectional characteristic of the omnidirectional dipole antenna 1, and after the omnidirectional dipole antenna 1 passes through the auxiliary antenna, the effect of the pair of orthogonal dipole antennas is equivalent, so that the antenna pattern has the circular polarization antenna with the horizontal omnidirectional characteristic. The parameters of the parasitic unit and the parameters of the dipole antenna are optimized through CST electromagnetic simulation software, so that the circular polarization performance of the antenna is best, the gain of the antenna reaches about 2dB, and the axial ratio is smaller than 3dB, as shown in fig. 8, 9, 10 and 11.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (8)
1. The circular polarization omnidirectional antenna device is characterized by comprising an antenna housing (4) and a base (5), wherein the base (5) is connected to the bottom of the antenna housing (4), an output socket (7) is arranged at the bottom of the base (5), one end of the output socket (7) is used for being connected with other equipment, and the other end of the output socket is connected with an amplifier box (6);
the antenna is characterized in that an omni-directional dipole antenna (1) and a circular polarization auxiliary antenna (2) are arranged on the upper portion of the base (5), the circular polarization auxiliary antenna (2) is connected between the antenna housing (4) and the base (5), and the omni-directional dipole antenna (1) is arranged in the middle of the circular polarization auxiliary antenna (2).
2. A circularly polarized omnidirectional antenna arrangement as claimed in claim 1, further comprising a fixing plate arranged on top of the inside of the radome (4), one end of the omnidirectional dipole antenna (1) and the circularly polarized auxiliary antenna (2) being connected to the bottom of the fixing plate.
3. A circularly polarized omnidirectional antenna arrangement as recited in claim 2, further comprising a dielectric cavity (3) arranged on top of the base (5), wherein the end of the omnidirectional dipole antenna (1) and the circularly polarized auxiliary antenna (2) remote from the fixed plate is connected to the top of the dielectric cavity (3).
4. A circularly polarized omnidirectional antenna arrangement according to claim 3, characterized in that the middle part of the fixing plate is provided with a protruding block, a first limit groove is provided inside the protruding block, and the omnidirectional dipole antenna (1) is provided in the first limit groove.
5. The circular polarized omnidirectional antenna apparatus according to claim 4, wherein a plurality of second limiting grooves are provided on the dielectric cavity (3), and one ends of the omnidirectional dipole antenna (1) and the circular polarized auxiliary antenna (2) are connected with even number of second limiting grooves.
6. A circularly polarized omnidirectional antenna arrangement according to claim 4, characterized in that the circularly polarized auxiliary antenna (2) comprises a cylinder and a number of sets of obliquely arranged parasitic elements arranged on the cylinder.
7. A circularly polarized omnidirectional antenna assembly according to claim 6, wherein the parasitic element is angled at 45 ° to 55 °.
8. A circularly polarized omnidirectional antenna arrangement according to any of claims 1-7, characterized in that the radome (4) is of epoxy glass composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322116273.XU CN220439862U (en) | 2023-08-07 | 2023-08-07 | Circular polarization omnidirectional antenna device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322116273.XU CN220439862U (en) | 2023-08-07 | 2023-08-07 | Circular polarization omnidirectional antenna device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220439862U true CN220439862U (en) | 2024-02-02 |
Family
ID=89689269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322116273.XU Active CN220439862U (en) | 2023-08-07 | 2023-08-07 | Circular polarization omnidirectional antenna device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220439862U (en) |
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2023
- 2023-08-07 CN CN202322116273.XU patent/CN220439862U/en active Active
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