CN215645033U - Three-frequency-band common antenna - Google Patents
Three-frequency-band common antenna Download PDFInfo
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- CN215645033U CN215645033U CN202121442740.2U CN202121442740U CN215645033U CN 215645033 U CN215645033 U CN 215645033U CN 202121442740 U CN202121442740 U CN 202121442740U CN 215645033 U CN215645033 U CN 215645033U
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Abstract
The utility model discloses a three-band co-body antenna, which comprises a UHF band antenna, two L1 and L2 band antennas with different frequency ranges, wherein the UHF band antenna is used as an antenna upper body, and the two L band antennas are used as antenna lower bodies; the antenna lower body is connected with the mounting seat at one end and connected with the antenna upper body at the other end. The utility model adopts a three-section frequency division composite structure, realizes different requirements on antenna gain and beam width on different frequency bands, and has the advantages of simple operation, good accessibility for disassembly and assembly and good sealing performance.
Description
Technical Field
The utility model relates to the technical field of communication antennas, in particular to a three-frequency-band common antenna.
Background
In recent years, wireless communication systems have been developed rapidly, and the frequency band and bandwidth of communication have been increased, which puts demands on antennas for multiple frequencies. In order to enlarge the communication frequency range of the antenna, the normal use of the vehicle-mounted antenna under severe conditions of strong wind, impact vibration and the like is met.
In order to realize different requirements on antenna gain and beam width on different frequency bands in indexes. The vehicle-mounted antenna adopts a three-section frequency division composite structure. The antenna needs strength to meet requirements and is not damaged under the conditions of vibration, impact and the like. Meanwhile, the antenna needs to be disassembled and assembled, the operation is simple, the disassembling and assembling accessibility is good, the sealing performance is good, and the antenna is damp, sand-dust-proof, salt-fog-proof, mould-proof and the like.
Disclosure of Invention
In order to meet different requirements on antenna gain and beam width on different frequency bands, the utility model provides a three-band co-body antenna which adopts a three-segment frequency division composite structure to meet different requirements on antenna gain and beam width on different frequency bands.
In order to achieve the above object, the present invention adopts the following technical solution, a three-band co-body antenna, comprising a UHF-band antenna and two L1 and L2 band antennas with different frequency ranges, wherein the UHF-band antenna is used as an antenna upper body, and the two L-band antennas are used as an antenna lower body; the antenna lower body is characterized by further comprising a mounting seat, wherein one end of the antenna lower body is connected with the mounting seat, and the other end of the antenna lower body is connected with the antenna upper body.
Furthermore, the antenna upper body and the antenna lower body are connected through a single coaxial connector, and the antenna lower body and the mounting seat are connected through a multi-coaxial connector, so that the antennas in three frequency bands are all led to the mounting seat.
Furthermore, the antenna lower body is connected with the mounting seat in a pluggable manner, and the two sections of antennas are inserted into the two accommodating cavities of the mounting seat; the inner wall of the mounting seat is provided with a track, the corresponding position of the outer wall of the antenna lower body is provided with a stop rotating platform, and the stop rotating platform is positioned in the track after connection.
Furthermore, a first anti-dropping sleeve is arranged outside the joint of the antenna lower body and the mounting seat, and a clamping step is arranged on the first anti-dropping sleeve, so that the protrusion outside the antenna lower body can be placed in the clamping step.
Further, still include first thread bush, with first anticreep cover passes through threaded connection.
Furthermore, an auxiliary spring is arranged in the first anti-falling sleeve.
Furthermore, the mounting seat comprises a body and a spring, the body is connected with the antenna lower body, and the spring is located at the bottom of the body and fixedly connected with the body.
Furthermore, the antenna upper body is connected with the inside of the antenna lower body in a pluggable manner, a second anti-falling sleeve and a second threaded sleeve are arranged outside the connection part, and the second anti-falling sleeve and the antenna lower body as well as the second anti-falling sleeve and the second threaded sleeve are connected through threads.
Furthermore, sealing rings are arranged between the mounting seat and the antenna lower body and between the antenna lower body and the antenna upper body.
The utility model adopts a three-section frequency division composite structure, realizes different requirements on antenna gain and beam width on different frequency bands, and has the advantages of simple operation, good accessibility for disassembly and assembly and good sealing performance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is an external view of a triple-band co-body antenna according to an embodiment of the present invention;
FIG. 2 is a sectional view of the antenna lower body and the mounting base in the embodiment of FIG. 1;
FIG. 3 is a schematic view of a first sleeve-off preventing structure according to an embodiment of the present invention;
FIG. 4 is a schematic view of a first threaded sleeve according to an embodiment of the present invention;
FIG. 5 is a schematic view showing an installation state of the first run-off prevention sleeve and the first threaded sleeve;
FIG. 6 is a schematic view illustrating an installation state of an upper antenna body and a lower antenna body according to an embodiment of the present invention;
description of reference numerals:
the antenna comprises a mounting base 1, a track 11, an antenna lower body 2, a rotary stop table 21, an antenna upper body 3, a first anti-drop sleeve 4, a clamping step 41, a sealing ring 42 and a first thread sleeve 5.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all 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 application.
It should be noted that the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the present application, the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
The embodiment discloses a three-band co-body antenna, which comprises a UHF band antenna and two L1 and L2 band antennas with different frequency ranges, wherein the UHF band antenna is used as an antenna upper body 3, and the two L band antennas are used as an antenna lower body 2; the antenna lower body 2 is characterized by further comprising a mounting seat 1, one end of the antenna lower body is connected with the mounting seat 1, and the other end of the antenna lower body is connected with the antenna upper body 3. The appearance of the tri-band co-body antenna is shown in fig. 1.
Specifically, each frequency band is designed as follows:
UHF frequency band: because the frequency band has longer wavelength and larger corresponding oscillator base size, the antenna adopts the design of a two-unit symmetric dipole antenna, and the size and the weight of the antenna are reduced on the basis of ensuring the gain requirement of 3.4 dBi;
l1 band: the antenna adopts a dipole broadband unit, so that the beam width of the antenna is ensured;
l2 band: the antenna is designed by three units of parallel feed arrays, and the wave beam width of the vertical plane is narrowed, so that the L2 frequency band antenna has better gain;
because the UHF frequency band antenna dipole broadband unit is longer, and the L frequency band dipole broadband unit is shorter, the UHF frequency band antenna dipole is suitable for being independently made into a one-section structure, and the L frequency band is suitable for being combined into a structure by two sections.
The upper antenna body 3 and the lower antenna body 2 are connected through a single coaxial connector, and the lower antenna body 2 and the mounting base 1 are connected through a multi-coaxial connector, so that the antennas in three frequency bands are all led to the mounting base. The UHF frequency band is used as the upper antenna body because only the UHF frequency band can be butted and screwed with the lower antenna body through the single coaxial connector, and the electrical related structural design of antenna butt joint is simplified. Only in the bottom three frequency bands are led out to the mounting 1 by means of a multi-coaxial connector. In the direction, three frequency band antenna dipoles are vertically distributed with each other and are positioned in a theoretical non-radiation area, so that the coupling between the antennas is reduced, and the antenna directional diagram in the horizontal direction cannot be influenced.
In this embodiment, the mounting base 1 includes a body and a spring, wherein the body is connected to the antenna lower body 2, and the spring is located at the bottom of the body and is fixedly connected to the body.
Specifically, the spring of the mounting seat 1 is drum-shaped, the antenna outer protective tube is made of high-strength epoxy glass fiber winding, the upper antenna body 3 and the lower antenna body 2 and the rotary interface connecting pieces of the mounting seat 1 and the lower antenna body 2 are made of aluminum alloy materials, and the mounting seat 1 is made of stainless steel materials integrally.
As shown in fig. 2, the antenna lower body 2 is connected to the mounting base 1 in a pluggable manner, and two antennas with different frequency bands are inserted into two accommodating cavities of the mounting base 1; the inner wall of the mounting seat 1 is provided with a track 11, the corresponding position of the outer wall of the antenna lower body 2 is provided with a rotation stopping platform 21, and the rotation stopping platform 21 is positioned in the track 11 after connection.
In order to further increase the firmness of the connection between the antenna lower body 2 and the mounting base 1, in a specific embodiment of the present embodiment, a first anti-slip cover 4 is disposed outside the connection between the antenna lower body 2 and the mounting base 1, and a locking step 41 is disposed on the first anti-slip cover 4, so that a protrusion on the outside of the antenna lower body 2 can be placed in the locking step 41. As shown in fig. 5.
Preferably, the present embodiment further includes a first threaded sleeve 5, as shown in fig. 4, which is connected to the first anti-slip sleeve 4 by threads, so as to further secure the connection between the antenna lower body 2 and the mounting base 1. The mounted state of the first threaded sleeve 5 and the first anti-slip sleeve 4 is shown in fig. 5.
In some embodiments, an auxiliary spring is provided inside the first anti-slip cover 5. During installation, after the first threaded sleeve 5 is tightly screwed on the installation base 1, the first anti-release sleeve 4 is rotated, the auxiliary spring in the first anti-release sleeve 4 pushes the first anti-release sleeve 4 into the first threaded sleeve 5, and sawtooth meshing is realized, so that the first threaded sleeve 5 can be prevented from loosening and rotating. When the antenna lower body 2 is disassembled, the first anti-release sleeve 4 is pushed downwards to the top of the track 11 and then rotates, the first anti-release sleeve 4 separates the sawteeth of the first anti-release sleeve 4 from the inner teeth of the first threaded sleeve 5 through the force of the internal auxiliary spring, the first anti-release sleeve 4 is fixed on the mounting seat 1, and then the first threaded sleeve 5 is rotated to disassemble the antenna lower body 2.
The connection between the upper antenna body 3 and the lower antenna body 2 is similar to the connection between the lower antenna body 2 and the mounting base 1 in the above embodiment, that is, the upper antenna body 3 and the lower antenna body 2 are connected in a pluggable manner, a second anti-falling sleeve and a second threaded sleeve are arranged outside the connection, and the second anti-falling sleeve and the lower antenna body, and the second anti-falling sleeve and the second threaded sleeve are connected in a threaded manner.
The antenna of the present embodiment adopts a double sealing device, and sealing rings are disposed between the mounting base 1 and the lower antenna body 2, and between the lower antenna body 2 and the upper antenna body 3. The material of the sealing ring can be selected from an oil-resistant rubber gasket. Specifically, the antenna body and the lock sleeve are sealed by an internal sealing gasket, so that the seal between the lock sleeve and the antenna threaded connection is realized, as shown in fig. 6. The antenna body and the mounting seat are sealed by adopting the inner sealing gasket, so that the sealing between the antenna body and the mounting seat can be effectively realized.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (9)
1. A three-band co-body antenna is characterized by comprising a UHF band antenna, two L1 and L2 band antennas with different frequency ranges, wherein the UHF band antenna is used as an antenna upper body, and the two L band antennas are used as antenna lower bodies; the antenna lower body is characterized by further comprising a mounting seat, wherein one end of the antenna lower body is connected with the mounting seat, and the other end of the antenna lower body is connected with the antenna upper body.
2. The triple-band all-in-one antenna of claim 1, wherein the upper and lower antenna bodies are connected by a single coaxial connector, and the lower antenna body is connected to the mounting base by a multi-coaxial connector, so that the antennas of three bands are all guided to the mounting base.
3. The triple-band co-body antenna of claim 1, wherein the antenna lower body is connected with the mounting base in a pluggable manner, and two sections of antennas are inserted into two accommodating cavities of the mounting base; the inner wall of the mounting seat is provided with a track, the corresponding position of the outer wall of the antenna lower body is provided with a stop rotating platform, and the stop rotating platform is positioned in the track after connection.
4. The triple-band all-in-one antenna according to claim 3, wherein a first anti-slip cover is disposed outside a connection between the antenna lower body and the mounting base, and a locking step is disposed on the first anti-slip cover, so that a protrusion on the outer side of the antenna lower body can be placed in the locking step.
5. The triple-band co-body antenna according to claim 4, further comprising a first thread bushing in threaded connection with the first anti-slip bushing.
6. The triple-band all-in-one antenna according to claim 4, wherein an auxiliary spring is arranged in the first anti-slip sleeve.
7. The triple-band all-in-one antenna according to any one of claims 1 to 4, wherein the mounting base comprises a body and a spring, the body is connected with the lower antenna body, and the spring is located at the bottom of the body and is fixedly connected with the body.
8. The triple-band co-body antenna according to claim 1, wherein the antenna upper body is connected with the antenna lower body in a pluggable manner, a second anti-drop sleeve and a second threaded sleeve are arranged outside the connection, and the second anti-drop sleeve is connected with the antenna lower body and the second anti-drop sleeve is connected with the second threaded sleeve in a threaded manner.
9. The triple-band all-in-one antenna according to claim 1, wherein sealing rings are disposed between the mounting base and the lower antenna body and between the lower antenna body and the upper antenna body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121442740.2U CN215645033U (en) | 2021-06-28 | 2021-06-28 | Three-frequency-band common antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121442740.2U CN215645033U (en) | 2021-06-28 | 2021-06-28 | Three-frequency-band common antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215645033U true CN215645033U (en) | 2022-01-25 |
Family
ID=79946051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121442740.2U Active CN215645033U (en) | 2021-06-28 | 2021-06-28 | Three-frequency-band common antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215645033U (en) |
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2021
- 2021-06-28 CN CN202121442740.2U patent/CN215645033U/en active Active
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