CN116014421A - Vehicle-mounted 5G antenna assembly - Google Patents
Vehicle-mounted 5G antenna assembly Download PDFInfo
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- CN116014421A CN116014421A CN202310013112.XA CN202310013112A CN116014421A CN 116014421 A CN116014421 A CN 116014421A CN 202310013112 A CN202310013112 A CN 202310013112A CN 116014421 A CN116014421 A CN 116014421A
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Abstract
The invention relates to a vehicle-mounted 5G antenna assembly, which comprises a substrate, an antenna radiating unit and a FAKRA connector, wherein the FAKRA connector is connected to the substrate, the antenna radiating unit comprises a first antenna part, a second antenna part, a third antenna part, a fourth antenna part and a fifth antenna part, the bottom of the fifth antenna part is connected to the substrate, one end of the first antenna part, one end of the second antenna part and one end of the third antenna part are connected to the top of the fifth antenna part, the first antenna part, the second antenna part and the third antenna part extend along a first horizontal direction and are parallel to each other, the fourth antenna part comprises a first branch and a second branch, the first branch extends along the first horizontal direction, one end of the first branch is connected to the side part of the fifth antenna part, the second branch extends along a second horizontal direction, and one end of the second branch is connected to the other end of the first branch. The antenna assembly has simple and reliable structure, realizes miniaturization of the antenna, has wide bandwidth, can cover 4G/5G frequency bands, is suitable for most vehicle-mounted modules, and has good compatibility.
Description
Technical Field
The invention belongs to the technical field of vehicle-mounted wireless communication equipment, and particularly relates to a vehicle-mounted 5G antenna assembly.
Background
With the rapid development of the automobile industry, people have increasingly demanded comfort, safety, convenience and intellectualization of automobiles. In order to meet the use requirements of people on vehicles, various vehicle-mounted electronic devices, such as a radio receiver, a touch screen display, a navigation device, a portable telephone and the like, are currently arranged in the vehicle, and are connected to a vehicle-mounted antenna through a cable, wherein the vehicle-mounted antenna is one of important components on the vehicle, and can receive signals from the outside and send the signals to other vehicle-mounted electronic devices.
At present, with the development of technology, the 5G communication technology starts to be applied in the automobile industry on a large scale, and compared with the 4G frequency band, the 5G frequency band is added with a plurality of new frequency spectrums, so that in order to consider the 4G frequency band and the 5G frequency band, the adaptability and the use convenience are improved, and a novel vehicle-mounted antenna compatible with the 4G/5G frequency band is required to be designed. In the prior art, most of vehicle-mounted antennas adopt an integrated scheme, so that the overall size of the antenna is large, and as the number of the antennas in the automobile is increased, the large-size antenna is difficult to find an ideal position to place, and the larger the size is, the more easily the antenna is influenced by surrounding environment in the working process, so that the stability is poor. Therefore, how to research and develop a novel 5G vehicle-mounted antenna with simple structure, miniaturization, wide bandwidth and omnidirectional radiation is a problem to be solved by those skilled in the art.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
The invention aims to provide a miniaturized, wide-bandwidth and omni-directional radiating vehicle-mounted 5G antenna assembly.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the utility model provides a on-vehicle 5G antenna assembly, includes base plate, antenna radiation unit and FAKRA connector, antenna radiation unit, FAKRA connector all connect on the base plate, antenna radiation unit include first antenna portion, second antenna portion, third antenna portion, fourth antenna portion and fifth antenna portion, the bottom of fifth antenna portion connect on the base plate, the one end of first antenna portion, second antenna portion and third antenna portion all connect at the top of fifth antenna portion, first antenna portion, second antenna portion and third antenna portion all extend along first horizontal direction, and be parallel to each other between the three, fourth antenna portion include first branch, second branch, first branch extend along first horizontal direction, the one end of first branch connect the lateral part of fifth antenna portion, the second branch extend along the second horizontal direction, the one end of second branch connect the other end of first branch first horizontal direction, the second horizontal direction each other.
Preferably, the length of the first antenna portion is 20±0.4mm, the length of the second antenna portion is 13±0.4mm, the length of the third antenna portion is 15±0.4mm, and the sum of the lengths of the first branch and the second branch of the fourth antenna portion is 36±0.4mm.
Preferably, gaps exist among the first antenna part, the second antenna part, the third antenna part and the fourth antenna part.
Further preferably, the gaps of the first antenna portion and the second antenna portion are 2±0.08mm, the gaps of the second antenna portion and the third antenna portion are 1±0.05mm, and the gaps of the first branches of the third antenna portion and the fourth antenna portion are 1.2±0.08mm.
Preferably, the excitation resonance frequency of the first antenna part, the second antenna part and the third antenna part is 2170-5000MHz.
Preferably, the resonance frequency excited by the fourth antenna part is 1710-2170MHz.
Preferably, the first antenna portion, the second antenna portion and the third antenna portion are flush with each other in a vertical direction.
Preferably, the antenna radiating unit further comprises a feed point part and a grounding part, wherein the feed point part and the grounding part are arranged at the bottom of the fifth antenna part, and the feed point part and the grounding part are connected with the substrate.
Preferably, the fifth antenna part is provided with a through slot penetrating through two side surfaces of the fifth antenna part, the through slot is positioned between the first antenna part and the second antenna part, the through slot is provided with an opening, and the opening is positioned at the top of the fifth antenna part.
Further preferably, the length of the through slot of the fifth antenna part is 10±0.2mm, and the width of the through slot of the fifth antenna part is 3±0.2mm.
Preferably, the first antenna portion, the second antenna portion, the third antenna portion, the fourth antenna portion and the fifth antenna portion are integrally formed.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
according to the invention, the antenna radiating unit of the antenna assembly is provided with the plurality of bent antenna parts with gaps, so that the structure is simple and reliable, the miniaturization of the antenna is realized, the wide bandwidth of the antenna can radiate omnidirectionally, the 4G/5G frequency band can be covered, most of vehicle-mounted modules are adapted, the compatibility is good, the adaptability and the use convenience are improved, and the practicability is good.
Drawings
Fig. 1 is a schematic perspective view of a vehicle-mounted 5G antenna assembly according to the present embodiment;
fig. 2 is a perspective view of another view angle of the vehicle-mounted 5G antenna assembly according to the present embodiment;
fig. 3 is a schematic top view of the vehicle-mounted 5G antenna assembly of the present embodiment;
fig. 4 is a schematic perspective view of an antenna radiating unit of the vehicle-mounted 5G antenna assembly according to the present embodiment;
fig. 5 is a standing wave test chart of the vehicle-mounted 5G antenna assembly according to the present embodiment.
In the above figures:
1. a substrate; 2. an antenna radiation unit; 21. a first antenna section; 22. a second antenna section; 23. a third antenna section; 24. a fourth antenna section; 241. a first branch; 242. a second branch; 25. a fifth antenna section; 251. a through groove; 26. a feed point section; 27. a grounding part; 3. FAKRA connectors.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the description of the present embodiment, as shown in fig. 3, the left-right direction in the drawing is the first horizontal direction of the present embodiment, the up-down direction in the drawing is the second horizontal direction of the present embodiment, the first horizontal direction and the second horizontal direction are perpendicular to each other, and the direction perpendicular to the drawing is the vertical direction of the present embodiment.
The utility model provides a on-vehicle 5G antenna module, as shown in fig. 1 and 2, includes base plate 1, antenna radiation unit 2 and FAKRA connector 3, and antenna radiation unit 2 is sheet metal radiation piece and has three-dimensional structure, and the bottom of antenna radiation unit 2 is connected on base plate 1, and FAKRA connector 3's top is connected on base plate 1.
The following details of each component and its connection relation are described in detail:
the antenna radiation unit 2 includes a first antenna portion 21, a second antenna portion 22, a third antenna portion 23, a fourth antenna portion 24, and a fifth antenna portion 25, and as shown in fig. 1 to 3, the fifth antenna portion 25 is connected to the substrate 1, and the first antenna portion 21, the second antenna portion 22, the third antenna portion 23, and the fourth antenna portion 24 are connected to the fifth antenna portion 25. Specifically:
as shown in fig. 1, the fifth antenna portion 25 extends in the vertical direction, and the bottom of the fifth antenna portion 25 is connected to the substrate 1, specifically: the antenna radiation unit 2 further comprises a feed point part 26 and a grounding part 27, wherein the feed point part 26 and the grounding part 27 are arranged at the bottom of the fifth antenna part 25, a through hole is formed in the substrate 1, the feed point part 26 and the grounding part 27 are inserted into and fixed in the through hole of the substrate 1, and the feed point part 26 and the grounding part 27 are connected with a signal feed point of the substrate 1; the feed point portion 26 and the ground portion 27 may be fixed in the through hole of the substrate 1 by welding or the like, and of course, only one embodiment is shown here, but the invention is not limited to this embodiment.
As shown in fig. 2 and 4, one ends of the first antenna portion 21, the second antenna portion 22 and the third antenna portion 23 are connected to the top of the fifth antenna portion 25, and the first antenna portion 21, the second antenna portion 22 and the third antenna portion 23 extend in the same direction, that is, the first antenna portion 21, the second antenna portion 22 and the third antenna portion 23 extend in the first horizontal direction, the length of the first antenna portion 21 is 20±0.4mm, the length of the second antenna portion 22 is 13±0.4mm, and the length of the third antenna portion 23 is 15±0.4mm;
the second antenna portion 22 is located between the first antenna portion 21 and the third antenna portion 23, and the three are parallel to each other in the second horizontal direction, while the first antenna portion 21, the second antenna portion 22 and the third antenna portion 23 are flush with each other in the vertical direction, that is, the three are located on the same horizontal plane;
further, gaps are present between the first antenna portion 21, the second antenna portion 22, and the third antenna portion 23, and the gaps between the first antenna portion 21 and the second antenna portion 22 are 2±0.08mm, and the gaps between the second antenna portion 22 and the third antenna portion 23 are 1±0.05mm.
As shown in fig. 2 and 4, the fourth antenna portion 24 is connected to a side portion of the fifth antenna portion 25, and the fourth antenna portion 24 is close to the third antenna portion 23 with a gap between the fourth antenna portion 24 and the third antenna portion 23, specifically: the fourth antenna part 24 comprises a first branch 241 and a second branch 242, the first branch 241 extends along the first horizontal direction, one end of the first branch 241 is connected to the side part of the fifth antenna part 25, the first branch 241 is close to the third antenna part 23, a gap exists between the first branch 241 and the second branch, and the gap between the third antenna part 23 and the first branch 241 is 1.2+/-0.08 mm; the second branch 242 extends along the second horizontal direction, and one end of the second branch 242 is connected to the other end of the first branch 241; the sum of the lengths of the first branch 241 and the second branch 242 of the fourth antenna portion 24 is 36±0.4mm.
As shown in fig. 2 and 4, the fifth antenna portion 25 is provided with a through groove 251 penetrating through both side surfaces thereof, the through groove 251 is located between the first antenna portion 21 and the second antenna portion 22, the through groove 251 has an opening, and the opening is located at the top of the fifth antenna portion 25. The length of the through slot 251 of the fifth antenna portion 25 is 10±0.2mm, and the width of the through slot 251 of the fifth antenna portion 25 is 3±0.2mm. The through slot 251 of the fifth antenna portion 25 increases the electrical length, which reduces the size of the antenna radiating element 2.
The first antenna portion 21, the second antenna portion 22, the third antenna portion 23, the fourth antenna portion 24 and the fifth antenna portion 25 can excite resonances at different frequencies, respectively, the first antenna portion 21, the second antenna portion 22 and the third antenna portion 23 excite resonances at 2170-5000MHz, the fourth antenna portion 24 excite resonances at 1710-2170MHz, and the fifth antenna portion 25 acts as a ground short circuit branch, which can excite resonances at a size of 1/4 wavelength for the entire antenna radiating element 2 without a specific excitation resonance frequency.
The first antenna portion 21, the second antenna portion 22, the third antenna portion 23, the fourth antenna portion 24, and the fifth antenna portion 25 are each made of a metal material, and preferably the first antenna portion 21, the second antenna portion 22, the third antenna portion 23, the fourth antenna portion 24, and the fifth antenna portion 25 are integrally formed.
The FAKRA connector 3 and the substrate 1 may be connected by soldering or the like, of course, only one embodiment is given here, but not limited to this embodiment; FAKRA connector 3 is well known to those skilled in the art and will not be described in detail herein.
In order to evaluate the performance index of the antenna assembly of this embodiment, as shown in fig. 5, the antenna assembly of this embodiment is subjected to a standing wave test, and as can be seen from the graph, the standing wave of the antenna assembly is less than 2.5 in the frequency band of 1.71-5.0GHz, that is, the relative bandwidth of less than 2.5 is 98%, the coverage frequency band is 1.71-5.0GHz, and since the relative bandwidth is greater than 25%, the antenna is an ultra wideband antenna, the antenna assembly is adapted to the 4G/5G frequency band, and the relative bandwidth can be specifically calculated according to the formula ffoc=2 (f H -f L )/(f H +f L ) A) calculation, wherein f H 5.0GHz, f L 1.71GHz.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (10)
1. A vehicle-mounted 5G antenna assembly, characterized in that: including base plate, antenna radiation unit and FAKRA connector, antenna radiation unit, FAKRA connector all connect on the base plate, antenna radiation unit include first antenna portion, second antenna portion, third antenna portion, fourth antenna portion and fifth antenna portion, the bottom of fifth antenna portion connect on the base plate, the one end of first antenna portion, second antenna portion and third antenna portion all connect at the top of fifth antenna portion, first antenna portion, second antenna portion and third antenna portion all extend along first horizontal direction, and be parallel to each other between the three, fourth antenna portion include first branch, second branch, first branch extend along first horizontal direction, one end of first branch connect the lateral part of fifth antenna portion, the second branch extend along the second horizontal direction, one end of second branch connect the other end of first branch, first horizontal direction, second horizontal direction mutually perpendicular.
2. The vehicle-mounted 5G antenna assembly of claim 1, wherein: the length of the first antenna part is 20+/-0.4 mm, the length of the second antenna part is 13+/-0.4 mm, the length of the third antenna part is 15+/-0.4 mm, and the sum of the lengths of the first branch and the second branch of the fourth antenna part is 36+/-0.4 mm.
3. The vehicle-mounted 5G antenna assembly of claim 1 or 2, wherein: gaps exist among the first antenna part, the second antenna part, the third antenna part and the fourth antenna part; the gaps of the first antenna part and the second antenna part are 2+/-0.08 mm, the gaps of the second antenna part and the third antenna part are 1+/-0.05 mm, and the gaps of the first branches of the third antenna part and the fourth antenna part are 1.2+/-0.08 mm.
4. The vehicle-mounted 5G antenna assembly of claim 1, wherein: the excitation resonance frequency of the first antenna part, the second antenna part and the third antenna part is 2170-5000MHz.
5. The vehicle-mounted 5G antenna assembly of claim 1 or 4, wherein: the resonance frequency excited by the fourth antenna part is 1710-2170MHz.
6. The vehicle-mounted 5G antenna assembly of claim 1, wherein: the first antenna part, the second antenna part and the third antenna part are mutually parallel and level in the vertical direction.
7. The vehicle-mounted 5G antenna assembly of claim 1, wherein: the antenna radiating unit also comprises a feed point part and a grounding part, wherein the feed point part and the grounding part are arranged at the bottom of the fifth antenna part, and the feed point part and the grounding part are connected with the substrate.
8. The vehicle-mounted 5G antenna assembly of claim 1, wherein: the fifth antenna part is provided with a through groove penetrating through two side surfaces of the fifth antenna part, the through groove is positioned between the first antenna part and the second antenna part, the through groove is provided with an opening, and the opening is positioned at the top of the fifth antenna part.
9. The vehicle-mounted 5G antenna assembly of claim 8, wherein: the length of the through slot of the fifth antenna part is 10+/-0.2 mm, and the width of the through slot of the fifth antenna part is 3+/-0.2 mm.
10. The vehicle-mounted 5G antenna assembly of claim 1, wherein: the first antenna part, the second antenna part, the third antenna part, the fourth antenna part and the fifth antenna part are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310013112.XA CN116014421A (en) | 2023-01-05 | 2023-01-05 | Vehicle-mounted 5G antenna assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310013112.XA CN116014421A (en) | 2023-01-05 | 2023-01-05 | Vehicle-mounted 5G antenna assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116014421A true CN116014421A (en) | 2023-04-25 |
Family
ID=86037014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310013112.XA Pending CN116014421A (en) | 2023-01-05 | 2023-01-05 | Vehicle-mounted 5G antenna assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116014421A (en) |
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2023
- 2023-01-05 CN CN202310013112.XA patent/CN116014421A/en active Pending
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