CN212783784U - Vehicle-mounted full-band 5G antenna and automobile with same - Google Patents
Vehicle-mounted full-band 5G antenna and automobile with same Download PDFInfo
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- CN212783784U CN212783784U CN202021128925.1U CN202021128925U CN212783784U CN 212783784 U CN212783784 U CN 212783784U CN 202021128925 U CN202021128925 U CN 202021128925U CN 212783784 U CN212783784 U CN 212783784U
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Abstract
The utility model relates to a vehicle-mounted full-band 5G antenna and an automobile with the same, which is provided with a double-sided PCB board; the front surface of the double-sided PCB comprises an antenna radiator, a microstrip line and a first antenna reference ground, and the back surface of the double-sided PCB is provided with a second antenna reference ground; the antenna radiator is composed of a copper foil which is half of an ellipse and is internally corroded to remove an elliptical area; the microstrip line is L-shaped, the short edge of the microstrip line is connected with the end point of the long axis of the antenna radiator, and the long edge of the microstrip line is parallel to the lower edge of the front surface of the double-sided PCB; the first antenna is arranged close to the lower edge of the front surface of the double-sided PCB in a reference mode, and a recess is formed in the position, corresponding to the long edge of the microstrip line, of the first antenna in the reference mode; the second antenna is arranged in a manner of clinging to the lower edge of the back surface of the double-sided PCB in a reference mode, the second antenna is arranged in a descending stepped mode from left to right in the reference mode, and the reference ground of the second antenna is connected with the reference ground of the first antenna through a through hole. The utility model discloses an antenna size is little, and the mounted position is nimble.
Description
Technical Field
The utility model relates to an automotive electronics technical field, in particular to on-vehicle full frequency channel 5G antenna and take car of this antenna.
Background
With the continuous development of communication technology, the speed of the network is continuously improved, and the functions of the vehicle-mounted antenna system are more and more abundant. With the gradual commercial popularization of the fifth generation (5G) mobile communication, the demand of the 5G antenna is rapidly increasing, and the demand of the 5G antenna for the internet of vehicles is rapid as an important application scene of the 5G mobile communication. The current 5G antenna is generally used by combining four antenna units, namely 4x4 MIMO, and this antenna form is convenient to install, but has a problem of low isolation between the antenna units due to the small distance between the antenna units, thereby affecting the performance of the system, such as data transmission speed.
In addition, with the commercial popularization of 5G mobile communication systems, emergency call systems also necessarily need to support 5G communication, so as to transmit more information to rescue centers more reliably and quickly with lower time delay, and simultaneously, 2G, 3G and 4G LTE communication is compatible. At present, an antenna of an emergency call system only supports 2G, 3G and 4G LTE frequency bands, and does not support a 5G frequency band.
Disclosure of Invention
The utility model aims at overcoming the defect that prior art exists, providing one kind and being suitable for the vehicle and going up the installation and use, the very big on-vehicle full frequency channel 5G antenna of isolation between the antenna and take the car of this antenna.
Realize the utility model discloses the technical scheme of purpose is: a vehicle-mounted full-band 5G antenna is provided with a double-sided PCB; the front surface of the double-sided PCB comprises an antenna radiator, a microstrip line and a first antenna reference ground, and the back surface of the double-sided PCB is provided with a second antenna reference ground; the antenna radiator is composed of a copper foil which is half of an ellipse and is internally corroded to remove an elliptical area; the microstrip line is L-shaped, the short edge of the microstrip line is connected with the end point of the long axis of the antenna radiator, and the long edge of the microstrip line is parallel to the lower edge of the front surface of the double-sided PCB; the first antenna is arranged close to the lower edge of the front surface of the double-sided PCB in a reference mode, and a recess is formed in the position, corresponding to the long edge of the microstrip line, of the first antenna in the reference mode; the second antenna is arranged in a manner of clinging to the lower edge of the back surface of the double-sided PCB in a reference mode, the second antenna is arranged in a descending stepped mode from left to right in the reference mode, and the reference ground of the second antenna is connected with the reference ground of the first antenna through a through hole.
According to the technical scheme, the double-sided PCB is provided with the plastic shell.
According to the technical scheme, the double-sided PCB is formed by low-pressure injection molding.
In the technical scheme, the microstrip line is a microstrip line with 50-ohm impedance.
According to the technical scheme, the double-sided PCB is made of polytetrafluoroethylene materials, and the relative dielectric constant of the double-sided PCB is 4.2-4.5.
The application of the vehicle-mounted full-band 5G antenna comprises the steps that four vehicle-mounted full-band 5G antennas are simultaneously installed at different positions of an automobile, the reference ground of each antenna is directly connected with a bumper, and a bumper is used as a part of the ground of each antenna to form a 4x4 MIMO 5G antenna; the antenna radiator is connected with the radio frequency connector through a microstrip line; the radio frequency connector is connected with the transceiver through a coaxial line.
Above-mentioned technical scheme on-vehicle full frequency channel 5G antenna install on the rear bumper before the car.
After the technical scheme is adopted, the utility model discloses following positive effect has:
(1) the utility model discloses an antenna size is little, and the mounted position is nimble and convenient.
(2) The utility model discloses be suitable for and install on the vehicle and use, when using as 5G antenna unit, can install four such antennas simultaneously in the different positions of vehicle, constitute 4x4 MIMO 5G antenna, distance between the antenna is greater than the operating wavelength of antenna far away under this condition, and isolation between the antenna unit is big, and the correlation is little.
(3) The utility model discloses an antenna frequency bandwidth, antenna cover 2G, 3G, 4G LTE and 5G frequency channel, when the antenna as emergency call system used, not only covered the 5G frequency channel, also compatible 2G, 3G and 4G LTE frequency channel, overcome the defect that current emergency call antenna does not support the 5G frequency channel.
Drawings
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which
Fig. 1 is a schematic front view of a PCB of the present invention;
FIG. 2 is a schematic view of the reverse side of the PCB of the present invention;
fig. 3 is a graph illustrating Voltage Standing Wave Ratio (VSWR) of the antenna according to the present invention.
The reference numbers in the drawings are as follows: antenna radiator 1, microstrip line 2, first antenna reference ground 3, second antenna reference ground 4.
Detailed Description
(example 1)
Referring to fig. 1 and 2, the present invention has a double-sided PCB board; the front surface of the double-sided PCB board comprises an antenna radiator 1, a microstrip line 2 and a first antenna reference ground 3, and the back surface is provided with a second antenna reference ground 4; the antenna radiator 1 is formed by a copper foil which is half of an ellipse and internally corroded to remove an elliptical area 5; the microstrip line 2 is a microstrip line with 50 ohm impedance, the microstrip line 2 is L-shaped, the short edge of the microstrip line is connected with the end point of the long axis of the antenna radiator 1, and the long edge of the microstrip line is parallel to the lower edge of the front surface of the double-sided PCB; the first antenna reference ground 3 is arranged close to the lower edge of the front surface of the double-sided PCB, and a recess is formed in the position, corresponding to the long edge of the microstrip line 2, of the first antenna reference ground 3; the second antenna reference ground 4 is arranged close to the lower edge of the back side of the double-sided PCB, the second antenna reference ground 4 is arranged in a descending ladder shape from left to right, and the second antenna reference ground 4 and the first antenna reference ground 3 are connected with each other through a through hole.
Have plastic casing or two-sided PCB board on the two-sided PCB board and for the low pressure formation of moulding plastics, its purpose is in order to protect two-sided PCB board.
The double-sided PCB is made of polytetrafluoroethylene materials, and the relative dielectric constant of the double-sided PCB is 4.2-4.5.
(example 2)
The application of the vehicle-mounted full-band 5G antenna comprises the steps that four vehicle-mounted full-band 5G antennas in the embodiment 1 are simultaneously installed at different positions of an automobile, the reference ground of each antenna is directly connected with a bumper, and the bumper is used as a part of the antenna ground to form a 4x4 MIMO 5G antenna; the antenna radiator 1 is connected with a radio frequency connector (such as FAKRA, SMA and the like) through a microstrip line 2; the rf connector is connected to a transceiver (e.g., T-Box) via a coaxial line.
The four different positions in the above embodiment 2 can be selected and installed on the front and rear bumpers of the automobile.
The utility model discloses a frequency of antenna can cover 824MHz to 6000 MHz's frequency range, and in this frequency range, the Voltage Standing Wave Ratio (VSWR) of antenna is less than 3.0. The working frequency of the antenna covers the sub-6 GHz frequency bands of 2G, 3G, 4G LTE (824 MHz to 960MHz and 1710MHz to 2690 MHz) and 5G, namely 3.3GHz to 3.8GHz and 4.8-5.0 GHz. And simultaneously covers the C-V2X frequency band, namely 5.85GHz to 5.925 GHz.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A vehicle-mounted full-band 5G antenna is provided with a double-sided PCB; the method is characterized in that: the front surface of the double-sided PCB comprises an antenna radiator (1), a microstrip line (2) and a first antenna reference ground (3), and the back surface of the double-sided PCB is provided with a second antenna reference ground (4); the antenna radiator (1) is formed by a copper foil which is half of an ellipse and is internally corroded to remove an elliptical area; the microstrip line (2) is L-shaped, the short edge of the microstrip line is connected with the end point of the long axis of the antenna radiator (1), and the long edge of the microstrip line is parallel to the lower edge of the front surface of the double-sided PCB; the first antenna reference ground (3) is arranged close to the lower edge of the front surface of the double-sided PCB, and a position, corresponding to the long edge of the microstrip line (2), of the first antenna reference ground (3) is provided with a recess; the second antenna reference ground (4) is tightly attached to the lower edge of the reverse side of the double-sided PCB, the second antenna reference ground (4) is arranged in a descending stepped mode from left to right, and the second antenna reference ground (4) is connected with the first antenna reference ground (3) through a through hole.
2. The vehicle-mounted full-band 5G antenna according to claim 1, wherein: the double-sided PCB board is provided with a plastic shell.
3. The vehicle-mounted full-band 5G antenna according to claim 1, wherein: the double-sided PCB is formed by low-pressure injection molding.
4. The vehicle-mounted full-band 5G antenna according to claim 2 or 3, wherein: the microstrip line (2) is a microstrip line with 50-ohm impedance.
5. The vehicle-mounted full-band 5G antenna according to claim 2 or 3, wherein: the double-sided PCB is made of polytetrafluoroethylene materials, and the relative dielectric constant of the double-sided PCB is 4.2-4.5.
6. An automobile with an on-board full band 5G antenna according to any of claims 1-5, wherein: the method comprises the following steps that four vehicle-mounted full-band 5G antennas are simultaneously installed at different positions of an automobile, the reference ground of each antenna is directly connected with a bumper, and the bumper is used as a part of the antenna ground to form a 4x4 MIMO 5G antenna; the antenna radiator (1) is connected with the radio frequency connector through a microstrip line (2); the radio frequency connector is connected with the transceiver through a coaxial line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021128925.1U CN212783784U (en) | 2020-06-18 | 2020-06-18 | Vehicle-mounted full-band 5G antenna and automobile with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021128925.1U CN212783784U (en) | 2020-06-18 | 2020-06-18 | Vehicle-mounted full-band 5G antenna and automobile with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212783784U true CN212783784U (en) | 2021-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021128925.1U Active CN212783784U (en) | 2020-06-18 | 2020-06-18 | Vehicle-mounted full-band 5G antenna and automobile with same |
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| Country | Link |
|---|---|
| CN (1) | CN212783784U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111585013A (en) * | 2020-06-18 | 2020-08-25 | 常州柯特瓦电子有限公司 | Vehicle-mounted full-band 5G antenna and application thereof |
-
2020
- 2020-06-18 CN CN202021128925.1U patent/CN212783784U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111585013A (en) * | 2020-06-18 | 2020-08-25 | 常州柯特瓦电子有限公司 | Vehicle-mounted full-band 5G antenna and application thereof |
| CN111585013B (en) * | 2020-06-18 | 2024-06-04 | 常州柯特瓦电子股份有限公司 | Vehicle-mounted full-band 5G antenna and application thereof |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.16, Changjiang North Road, Xinbei District, Changzhou City, Jiangsu Province Patentee after: Changzhou ketewa Electronics Co.,Ltd. Address before: No.16, Changjiang North Road, Xinbei District, Changzhou City, Jiangsu Province Patentee before: CHANGZHOU CTW ELECTRONICS Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |