CN216597970U - Vehicle-mounted antenna - Google Patents
Vehicle-mounted antenna Download PDFInfo
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- CN216597970U CN216597970U CN202122574684.4U CN202122574684U CN216597970U CN 216597970 U CN216597970 U CN 216597970U CN 202122574684 U CN202122574684 U CN 202122574684U CN 216597970 U CN216597970 U CN 216597970U
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- mainboard
- elastic sheet
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Abstract
The utility model discloses a vehicle-mounted antenna which comprises a mainboard, wherein a first antenna is arranged on one of two opposite sides of the mainboard, a second antenna is arranged on the other side of the mainboard, the radiation intensity of the first antenna in the direction towards the second antenna is smaller than that of the first antenna in any other direction, the radiation intensity of the second antenna in the direction towards the first antenna is larger than that of the second antenna in any other direction, a GNSS antenna is further arranged on the mainboard, and the GNSS antenna is positioned between the first antenna and the second antenna. The vehicle-mounted antenna provided by the utility model can improve the isolation among the antennas on the premise of not changing the overall structure of the T-BOX, is easy to realize good isolation, has no influence on the structure or the volume of the T-BOX, and is convenient to install and use.
Description
Technical Field
The utility model relates to the technical field of antennas, in particular to a vehicle-mounted antenna.
Background
With the development of the 5G technology, in order to meet the requirement of a vehicle for connecting to the internet, a plurality of antennas are usually installed in a vehicle-mounted T-box (telematics box) to implement functions such as vehicle information display and background system control. The increase of the number of the antennas in the T-BOX may cause the low-frequency isolation of the antennas to be poor, which affects the normal signal transceiving of the antennas, and in order to improve the isolation of the antennas, it is usually adopted to add a barrier between the antennas or increase the distance between the antennas, however, this approach may cause the internal structure of the T-BOX to be complex or the volume of the T-BOX to be increased, which is not favorable for installing the T-BOX in the limited space of the vehicle.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: provided is a vehicle-mounted antenna with good low-frequency isolation.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: the utility model provides a vehicle-mounted antenna, includes the mainboard, one side in the relative both sides of mainboard is equipped with first antenna, and the opposite side is equipped with the second antenna, first antenna orientation the intensity of radiation in the direction of second antenna is less than the intensity of radiation of first antenna towards other arbitrary directions, the second antenna orientation the intensity of radiation in the direction of first antenna is greater than the intensity of radiation of second antenna towards other arbitrary directions, still be equipped with the GNSS antenna on the mainboard, the GNSS antenna is located first antenna with between the second antenna.
Further, a distance between the GNSS antenna and the first antenna is equal to a distance between the GNSS antenna and the second antenna.
The GNSS antenna is arranged on the mainboard in a covering mode, and the first antenna, the second antenna and the GNSS antenna are respectively arranged in a space enclosed by the shell and the mainboard.
Furthermore, a slot matched with the GNSS antenna is arranged on the shell.
Furthermore, the casing is the rectangle, the four corners of casing is equipped with the erection column respectively, the erection column has the mounting hole respectively.
Furthermore, two first elastic sheet connectors are arranged on the mainboard at intervals, the first elastic sheet connectors are arranged on one side close to the mainboard, and the two first elastic sheet connectors are respectively communicated with the first antenna.
Furthermore, two second elastic sheet connectors are arranged on the mainboard at intervals, the second elastic sheet connectors are close to one side of the mainboard, which is far away from the first elastic sheet connectors, and the two second elastic sheet connectors are respectively communicated with the second antenna.
Furthermore, two third elastic sheet connectors are arranged on the mainboard at intervals, the third elastic sheet connectors are located between the first elastic sheet connector and the second elastic sheet connector, and the two third elastic sheet connectors are respectively communicated with the GNSS antenna.
The utility model has the beneficial effects that: the first antenna and the second antenna are respectively arranged on two opposite sides of the mainboard, the radiation intensity of the first antenna towards the second antenna is weakest, the radiation intensity of the second antenna towards the first antenna is strongest, and the GNSS antenna is arranged between the first antenna and the second antenna, so that the isolation degree of the vehicle-mounted antenna reaches-13.1 dB, the isolation degree among the antennas can be improved by adjusting the positions of the first antenna, the second antenna and the GNSS antenna on the mainboard on the premise of not changing the integral structure of the T-BOX, the good isolation degree is easily realized, meanwhile, the structure or the volume of the T-BOX is not influenced, and the vehicle-mounted antenna is convenient to install and use.
Drawings
Fig. 1 is a schematic structural diagram of a vehicle-mounted antenna according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of another view angle of the vehicle-mounted antenna according to the first embodiment of the utility model;
FIG. 3 is a schematic diagram of a portion of the structure of the vehicle antenna of the present invention;
fig. 4 is a radiation pattern of a first antenna in the vehicle-mounted antenna according to the first embodiment of the present invention;
fig. 5 is a radiation pattern of a second antenna in the vehicle-mounted antenna according to the first embodiment of the utility model;
fig. 6 is an isolation test chart of the vehicle-mounted antenna according to the first embodiment of the utility model;
fig. 7 is a radiation pattern of a first antenna according to a first comparative example of the first embodiment of the present invention;
fig. 8 is a radiation pattern of a second antenna in a first comparative example according to a first embodiment of the present invention;
FIG. 9 is an isolation test chart of a first comparative example according to a first embodiment of the present invention;
fig. 10 is a radiation pattern of a first antenna according to a second comparative example of the first embodiment of the present invention;
fig. 11 is a radiation pattern of a second antenna according to a second comparative example of the first embodiment of the present invention;
FIG. 12 is an isolation test chart of a second comparative example according to the first embodiment of the present invention;
fig. 13 is a schematic structural diagram of a main board in a vehicle antenna according to a second embodiment of the present invention;
fig. 14 is an enlarged view at a in fig. 13.
Description of reference numerals:
1. a main board; 11. a first spring plate connector; 12. a second spring plate connector; 13. a third spring plate connector; 2. a first antenna; 3. a second antenna; 4. a GNSS antenna; 5. a housing; 51. mounting a column; 52. and (7) installing holes.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 to 5, a vehicle-mounted antenna includes a main board 1, a first antenna 2 is disposed on one of two opposite sides of the main board 1, a second antenna 3 is disposed on the other side of the main board, a radiation intensity of the first antenna 2 in a direction toward the second antenna 3 is smaller than a radiation intensity of the first antenna 2 in any other direction, a radiation intensity of the second antenna 3 in a direction toward the first antenna 2 is larger than a radiation intensity of the second antenna 3 in any other direction, a GNSS antenna 4 is further disposed on the main board 1, and the GNSS antenna 4 is located between the first antenna 2 and the second antenna 3.
From the above description, the beneficial effects of the present invention are: the vehicle-mounted antenna provided by the utility model can improve the isolation between the antennas on the premise of not changing the integral structure of the T-BOX, is easy to realize good isolation, has no influence on the structure or the volume of the T-BOX, and is convenient to install and use.
Further, the distance between the GNSS antenna 4 and the first antenna 2 is equal to the distance between the GNSS antenna 4 and the second antenna 3.
As can be seen from the above description, the GNSS antenna 4 is disposed right in the middle between the first antenna 2 and the second antenna 3, so as to further improve the isolation of the vehicle-mounted antenna by the position distribution of the first antenna 2, the second antenna 3 and the GNSS antenna 4.
Further, still include casing 5, casing 5 covers and establishes on mainboard 1, first antenna 2, second antenna 3 and GNSS antenna 4 are located respectively casing 5 with the space that mainboard 1 encloses.
As can be seen from the above description, the housing 5 and the motherboard 1 enclose a space for accommodating the first antenna 2, the second antenna 3 and the GNSS antenna 4, and the housing 5 protects the components such as the motherboard 1.
Furthermore, a slot matched with the GNSS antenna 4 is arranged on the housing 5.
As can be seen from the above description, after the vehicle-mounted antenna is assembled, the GNSS antenna 4 extends into the slot on the housing 5, so that the position of the GNSS antenna 4 on the motherboard 1 is stable.
Further, the housing 5 is rectangular, four corners of the housing 5 are respectively provided with a mounting column 51, and the mounting columns 51 are respectively provided with a mounting hole 52.
As apparent from the above description, the housing 5 can be easily fixed to the mounting position of the vehicle antenna by the mounting posts 51 provided at the four corners of the housing 5, and the vehicle antenna is ensured to be stable at the position.
Furthermore, two first elastic sheet connectors 11 are further arranged on the mainboard 1 at intervals, the first elastic sheet connectors 11 are arranged on one side close to the mainboard 1, and the two first elastic sheet connectors 11 are respectively communicated with the first antenna 2.
As can be seen from the above description, the first elastic piece connector 11 is used to connect the first antenna 2 with the motherboard 1, and determine the position of the first antenna 2 on the motherboard 1.
Furthermore, two second elastic sheet connectors 12 are further arranged on the main board 1 at intervals, the second elastic sheet connectors 12 are arranged close to one side of the main board 1 far away from the first elastic sheet connector 11, and the two second elastic sheet connectors 12 are respectively communicated with the second antenna 3.
As can be seen from the above description, the second antenna 3 is conducted with the motherboard 1 through the second elastic piece connector 12 disposed on the motherboard 1, and the first antenna 2 and the second antenna 3 are respectively close to the two opposite sides of the motherboard 1 by designing the positions of the first elastic piece connector 11 and the second elastic piece connector 12 on the motherboard 1.
Furthermore, two third elastic sheet connectors 13 are further arranged on the motherboard 1 at intervals, the third elastic sheet connectors 13 are located between the first elastic sheet connector 11 and the second elastic sheet connector 12, and the two third elastic sheet connectors 13 are respectively communicated with the GNSS antenna 4.
As can be seen from the above description, the third elastic piece connector 13 is disposed on the motherboard 1 for connecting the GNSS antenna 4 to the antenna, and the GNSS antenna 4 is located between the first antenna 2 and the second antenna 3 by the position of the third elastic piece connector 13.
Example one
Referring to fig. 1 to 12, a first embodiment of the present invention is: a vehicle-mounted antenna is installed on a vehicle to realize the connection between a vehicle system and the Internet, and further realize the functions of vehicle information real-time display, background system control and the like.
As shown in fig. 3 to 6, the vehicle-mounted antenna includes a motherboard 1 and a housing 5 that are matched with each other, the motherboard 1 and the housing 5 enclose a cavity, the motherboard 1 is provided with a first antenna 2, a second antenna 3 and a GNSS antenna 4, and the first antenna 2, the second antenna 3 and the GNSS antenna 4 are all located in the cavity enclosed by the motherboard 1 and the housing 5, wherein the first antenna 2 is located on one of two opposite sides of the motherboard 1, the second antenna 3 is located on the other side of the motherboard 1, and the GNSS antenna 4 is located between the first antenna 2 and the second antenna 3.
In detail, as shown in fig. 4 and 5, the radiation intensity of the first antenna 2 toward the second antenna 3 is less than the radiation intensity of the first antenna 2 toward any other direction, and the radiation intensity of the second antenna 3 toward the first antenna 2 is greater than the radiation intensity of the second antenna 3 toward any other direction, that is, the radiation intensity of the first antenna 2 toward the second antenna 3 is the weakest, and the radiation intensity of the second antenna 3 toward the first antenna 2 is the strongest. As shown in fig. 6, when the GNSS antenna 4 is located between the first antenna 2 and the second antenna 3, the isolation of the vehicle-mounted antenna can reach-13.1 dB, and when the GNSS antenna 4 is not located between the first antenna 2 and the second antenna 3, the isolation of the vehicle-mounted antenna can also reach-11.8 dB, so that the isolation of the vehicle-mounted antenna can be effectively improved by arranging the first antenna 2, the second antenna 3 and the GNSS antenna 4 on the motherboard 1, and there is no need to provide barriers between the antennas or increase the distance between the antennas.
In order to better explain the beneficial effects of the vehicle-mounted antenna provided by the present embodiment, the present embodiment further provides a first comparative example shown in fig. 7 to 9 and a second comparative example shown in fig. 10 to 12.
Referring to fig. 7 to 9, a difference between the first comparative example and the vehicle-mounted antenna provided in the present embodiment is that the position of the second antenna 3 on the motherboard 1 is different, in the first comparative example, the radiation intensity of the first antenna 2 facing the second antenna 3 is smaller than the radiation intensity of the first antenna 2 facing any other direction, the radiation intensity of the second antenna 3 facing the first antenna 2 is smaller than the radiation intensity of the second antenna 3 facing any other direction, that is, the radiation intensity of the first antenna 2 facing the second antenna 3 is the weakest, the radiation intensity of the second antenna 3 facing the first antenna 2 is the weakest, and the isolation between the first antenna 2 and the second antenna 3 is-7.8 dB regardless of whether there is the GNSS antenna 4 or not.
As shown in fig. 10 to 12, the position of the second antenna 3 on the main board 1 in the first comparative example is different from the vehicle-mounted antenna provided in the present embodiment and the first comparative example, in the second comparative example, the radiation intensity of the first antenna 2 toward the second antenna 3 is greater than the radiation intensity of the first antenna 2 toward any other direction, the radiation intensity of the second antenna 3 toward the first antenna 2 is greater than the radiation intensity of the second antenna 3 toward any other direction, i.e. the radiation intensity of the first antenna 2 in the direction towards the second antenna 3 is the strongest, the radiation intensity of the second antenna 3 in the direction towards the first antenna 2 is the strongest, the isolation of the second comparative example is-6.6 dB when the GNSS antenna 4 is provided between the first antenna 2 and the second antenna 3, the isolation of comparative example two is-7 dB when there is no GNSS antenna 4 between the first antenna 2 and the second antenna 3.
It can be seen that the vehicle-mounted antenna provided by the present embodiment has better isolation than the first and second comparative examples, and the isolation of the vehicle-mounted antenna can be further improved by disposing the GNSS antenna 4 between the first antenna 2 and the second antenna 3. Preferably, the distance between the GNSS antenna 4 and the first antenna 2 is equal to the distance between the GNSS antenna 4 and the second antenna 3.
Referring to fig. 1 and 2, in order to facilitate the installation of the vehicle-mounted antenna, the housing 5 is rectangular, four corners of the housing 5 are respectively provided with an installation column 51, the installation columns 51 are respectively provided with an installation hole 52, and the vehicle-mounted antenna can be conveniently fixed in position by matching the installation hole 52 with the installation position of the vehicle-mounted antenna, and the vehicle-mounted antenna is kept stable in the installation position.
Preferably, a slot matched with the GNSS antenna 4 is further arranged on the housing 5, and after the vehicle-mounted antenna is assembled, the GNSS antenna 4 extends into the slot, so that the position of the GNSS antenna 4 is kept fixed on the housing 5, and the stability of the overall structure of the vehicle-mounted antenna is improved.
Example two
Referring to fig. 3, 13 and 14, another technical solution is provided for the structure of the motherboard 1 based on the first embodiment of the present invention, which is different from the first embodiment only in the structure of the motherboard 1.
As shown in fig. 3, a first elastic piece connector 11, a second elastic piece connector 12 and a third elastic piece connector 13 are disposed on the motherboard 1, wherein the first elastic piece connector 11 is used for communicating the first antenna 2 with the motherboard 1, the second elastic piece connector 12 is used for communicating the second antenna 3 with the motherboard 1, and the third elastic piece connector 13 is used for communicating the GNSS antenna 4 with the motherboard 1, so as to ensure that the first antenna 2, the second antenna 3 and the GNSS antenna 4 are stably conducted with the motherboard 1 respectively.
Referring to fig. 13 and 14, in this embodiment, the first elastic piece connector 11 is disposed near one of two opposite sides of the motherboard 1, the second elastic piece connector 12 is disposed near the other side, and the third elastic piece connector 13 is disposed between the first elastic piece connector 11 and the second elastic piece connector 12, so that the first antenna 2, the second antenna 3, and the GNSS antenna 4 can be mounted at a preset position on the motherboard 1, and the number of the first elastic piece connectors 11, the number of the second elastic piece connectors 12, and the number of the third elastic piece connectors 13 are two, so as to ensure that the first antenna 2, the second antenna 3, and the GNSS antenna 4 are stably connected to the motherboard 1.
In summary, the vehicle-mounted antenna provided by the utility model is characterized in that the positions of the first antenna, the second antenna and the GNSS antenna on the motherboard are set, so that the direction with the weakest radiation intensity of the first antenna is aligned to the direction with the strongest radiation intensity of the second antenna, and the GNSS antenna is arranged in front of the first antenna and the second antenna, so as to improve the isolation of the vehicle-mounted antenna, and a shielding object does not need to be arranged in the vehicle-mounted antenna or the distance between the antennas is increased, thereby facilitating the manufacture of the vehicle-mounted antenna and the reduction of the space occupied by the vehicle-mounted antenna on the premise of not changing the T-BOX structure, and facilitating the installation and use of the vehicle-mounted antenna.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (8)
1. The utility model provides a vehicle antenna, includes the mainboard, its characterized in that: one side in the relative both sides of mainboard is equipped with first antenna, and the opposite side is equipped with the second antenna, first antenna orientation the radiation intensity in the direction of second antenna is less than the radiation intensity of first antenna towards other arbitrary directions, the radiation intensity of second antenna orientation in the direction of first antenna is greater than the radiation intensity of second antenna towards other arbitrary directions, still be equipped with the GNSS antenna on the mainboard, the GNSS antenna be located first antenna with between the second antenna.
2. The vehicle antenna of claim 1, wherein: the distance between the GNSS antenna and the first antenna is equal to the distance between the GNSS antenna and the second antenna.
3. The vehicle antenna of claim 1, wherein: the GNSS antenna is arranged on the mainboard in a covering mode, and the first antenna, the second antenna and the GNSS antenna are respectively located in a space enclosed by the shell and the mainboard.
4. The vehicle antenna of claim 3, wherein: and the shell is provided with a slot matched with the GNSS antenna.
5. The vehicle antenna of claim 3, wherein: the casing is the rectangle, the four corners of casing is equipped with the erection column respectively, the erection column has the mounting hole respectively.
6. The vehicle antenna of claim 1, wherein: the mainboard is also provided with two first elastic sheet connectors at intervals, the first elastic sheet connectors are arranged at one side close to the mainboard, and the two first elastic sheet connectors are respectively communicated with the first antenna.
7. The vehicle antenna of claim 6, wherein: the mainboard is also provided with two second elastic sheet connectors at intervals, the second elastic sheet connectors are arranged close to one side of the mainboard, which is far away from the first elastic sheet connectors, and the two second elastic sheet connectors are respectively communicated with the second antenna.
8. The vehicle antenna of claim 7, wherein: and two third elastic sheet connectors are arranged on the mainboard at intervals, the third elastic sheet connectors are positioned between the first elastic sheet connector and the second elastic sheet connector, and the two third elastic sheet connectors are respectively communicated with the GNSS antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122574684.4U CN216597970U (en) | 2021-10-25 | 2021-10-25 | Vehicle-mounted antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122574684.4U CN216597970U (en) | 2021-10-25 | 2021-10-25 | Vehicle-mounted antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216597970U true CN216597970U (en) | 2022-05-24 |
Family
ID=81640820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122574684.4U Active CN216597970U (en) | 2021-10-25 | 2021-10-25 | Vehicle-mounted antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216597970U (en) |
-
2021
- 2021-10-25 CN CN202122574684.4U patent/CN216597970U/en active Active
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