CN213936540U - Vehicle-mounted combined antenna and vehicle-mounted antenna module - Google Patents
Vehicle-mounted combined antenna and vehicle-mounted antenna module Download PDFInfo
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- CN213936540U CN213936540U CN202120486177.2U CN202120486177U CN213936540U CN 213936540 U CN213936540 U CN 213936540U CN 202120486177 U CN202120486177 U CN 202120486177U CN 213936540 U CN213936540 U CN 213936540U
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Abstract
The application discloses on-vehicle combination antenna and on-vehicle antenna module relates to on-vehicle antenna technique, includes: the antenna comprises a first 5G antenna, a second 5G antenna, a WI FI and Bluetooth antenna, a V2X antenna and a GNSS antenna; a printed circuit board, a first surface of which is provided with a first copper-clad region, a second copper-clad region and a third copper-clad region; the first 5G antenna and the WI FI and Bluetooth antennas are installed in the first copper-clad area, the second 5G antenna and the V2X antenna are installed in the second copper-clad area, and the GNSS antenna is installed in the third copper-clad area. This scheme is through covering the copper region with different antenna settings in the difference, improves the isolation distance of antenna through the mode of cutting ground coupling to promote antenna quality under the condition of same overall arrangement.
Description
Technical Field
The present application relates to a vehicle-mounted antenna technology, and more particularly, to a vehicle-mounted combined antenna and a vehicle-mounted antenna module.
Background
The combined antenna mounted on the vehicle is a device for transmitting or receiving radio waves, and can be combined with various types of antennas, such as 4G and 5G communication antennas, internet of vehicles V2X antennas, satellite navigation GNSS antennas and the like. Therefore, the vehicle-mounted combined antenna is a relatively common antenna design scheme in the field of intelligent driving of automobiles at present.
The size and the inner space of the vehicle-mounted combined antenna are usually small, and the space distance between the antennas is limited by the overall appearance, so that the isolation between the antennas is poor, and the performance of the antennas is affected.
Disclosure of Invention
In view of this, the present application aims to: the vehicle-mounted combined antenna and the vehicle-mounted antenna module are provided to solve the problem of antenna isolation and improve antenna performance.
In a first aspect, an embodiment of the present application provides:
a combined vehicular antenna, comprising:
the antenna comprises a first 5G antenna, a second 5G antenna, a WIFI and Bluetooth antenna, a V2X antenna and a GNSS antenna;
a printed circuit board, a first surface of which is provided with a first copper-clad region, a second copper-clad region and a third copper-clad region;
the first 5G antenna, the WIFI antenna and the Bluetooth antenna are installed in the first copper-clad area, the second 5G antenna, the V2X antenna are installed in the second copper-clad area, and the GNSS antenna is installed in the third copper-clad area.
In some embodiments, the second side of the printed circuit board is provided with at least one set of signal processing circuitry, and the signal processing circuitry is connected to at least one of the first 5G antenna, the second 5G antenna, the V2X antenna, the WIFI and bluetooth antenna, and the GNSS antenna.
In some embodiments, the first side of the printed circuit board includes a first region and a second region, wherein the first region is divided into a third region and a fourth region, the third region and the fourth region are symmetrical regions, the first copper clad region is disposed in the third region, the second copper clad region is disposed in the fourth region, and the third copper clad region is disposed in the second region.
In some embodiments, the GNSS antenna is cylindrical in shape and the third copper-clad region is a circular region.
In some embodiments, the GNSS antenna is an eight-arm helical antenna.
In some embodiments, the first 5G antennas are a primary set of 2X2MIMO antennas and the second 5G antennas are diversity antennas of the 2X2MIMO antennas.
In some embodiments, the first 5G antenna and the second 5G antenna are both monopole antennas based on a PCB.
In some embodiments, the vehicle-mounted combined antenna further includes a housing, the housing includes a bottom shell and a top shell, the printed circuit board is fixed on the bottom shell, and a space enclosed by the top shell and the bottom shell when the top shell and the bottom shell are installed in a matching manner is used for accommodating the printed circuit board, the first 5G antenna, the second 5G antenna, the V2X antenna, the WIFI and bluetooth antenna, and the GNSS antenna.
In some embodiments, the first 5G antenna, and therefore the second 5G antenna, the V2X antenna, the WIFI and bluetooth antenna, and the GNSS antenna are all routed out via coaxial cables.
In a second aspect, embodiments of the present application provide:
a vehicle-mounted antenna module comprises the vehicle-mounted combined antenna and a signal processing module connected with the vehicle-mounted combined antenna.
According to the embodiment of the application, the first copper-clad area, the second copper-clad area and the third copper-clad area are arranged on the first surface of the printed circuit board; the first 5G antenna, the WIFI antenna and the Bluetooth antenna are mounted in the first copper-clad area, the second 5G antenna and the V2X antenna are mounted in the second copper-clad area, and the GNSS antenna is mounted in the third copper-clad area, so that decoupling can be achieved by dividing, isolation between the antennas is improved, and antenna performance is improved in the same size and distance of the antennas.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a vehicle-mounted combined antenna provided in an embodiment of the present invention;
fig. 2 is a top view of an on-vehicle combined antenna provided by an embodiment of the present invention;
fig. 3 is a schematic diagram of an installation top shell of a vehicle-mounted combined antenna according to an embodiment of the present invention;
wherein the reference numbers are as follows:
101. a top shell; 102. a bottom case; 103. a printed circuit board; 104. a GNSS antenna; 105. WIFI and Bluetooth antennas; 106. a V2X antenna; 107. a first 5G antenna; 108. a second 5G antenna; 109. a coaxial line; 1010. a coaxial line; 1011. a coaxial line; 1012. a coaxial line; 1013. a coaxial line; 1014. parallel lines; 1015. a straight line; 1016. a second copper-clad region; 1017. a first copper-clad region; 1018. a third copper-clad region; 1019. and (6) a wire dividing head.
Detailed Description
In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below through embodiments with reference to the accompanying drawings in the embodiments of the present application, and it is obvious that the described embodiments are some 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.
Referring to fig. 1, 2 and 3, the present embodiment discloses a vehicle-mounted combined antenna, including:
a first 5G antenna 107, a second 5G antenna 108, a V2X antenna 106, a WIFI and bluetooth antenna 105, and a GNSS antenna 104; wherein, 5G refers to fifth generation communication technology, V2X refers to vehicle to evolution, that is, information exchange technology of vehicle to outside. GNSS refers to global navigation satellite system.
A printed circuit board 103 having a first surface provided with a first copper-clad region 1017, a second copper-clad region 1016, and a third copper-clad region 1018; the first copper clad region 1017, the second copper clad region 1016, and the third copper clad region 1018 are isolated from each other.
The first 5G antenna 107 and the WIFI and bluetooth antenna 105 are mounted in the first copper-clad region 1017, the second 5G antenna 108 and the V2X antenna 106 are mounted in the second copper-clad region 1016, and the GNSS antenna 104 is mounted in the third copper-clad region 1018.
As shown in fig. 1 and 3, the vehicle-mounted combined antenna further includes a housing, the housing includes a bottom case 102 and a top case 101, the printed circuit board 103 is fixed on the bottom case, and a space surrounded by the top case 101 and the bottom case 102 when the top case 101 and the bottom case 102 are installed in a matching manner is used for accommodating the printed circuit board 103, the first 5G antenna 107, the second 5G antenna 108, the V2X antenna 106, the WIFI and bluetooth antenna 105, and the GNSS antenna 104.
In general, the first 5G antenna 107, which is a main set antenna of a 5G 2 × 2MIMO antenna, can be used for 5G signal transmission and reception and is compatible with 4G/3G/2G signal transmission and reception.
The second 5G antenna 108, which is a diversity antenna in a 5G 2 × 2MIMO antenna, can be used for 5G signal auxiliary reception and is compatible with 4G/3G/2G signal reception.
The GNSS antenna 104, which is a global navigation satellite signal receiving antenna, can receive satellite signals in real time, and transmit the signals to a receiver after amplifying the signals through a low-noise amplification circuit on the printed circuit board 103, thereby realizing high-precision positioning.
WIFI and bluetooth antenna 105 is WIFI, two unification antennas of bluetooth for receiving and dispatching WIFI, bluetooth signal, can be through connecting in-car central control platform etc. for realize people and car and be mutual.
According to the embodiment of the application, the first copper-clad area, the second copper-clad area and the third copper-clad area are arranged on the first surface of the printed circuit board; and the first 5G antenna and the WIFI and Bluetooth antennas are installed in the first copper-clad area, the second 5G antenna and the V2X antenna are installed in the second copper-clad area, and the GNSS antenna is installed in the third copper-clad area, so that the isolation between the antennas can be improved through a split decoupling technology, and the antenna performance can be improved in the same antenna size and space. In addition, the problem of few kind and quantity of the inside antenna of current on-vehicle combination antenna has been increased to the kind of this embodiment, satisfies all kinds of demands.
Referring to fig. 1 to 3, the printed circuit board 103 is fixed to the bottom case 102 by screws, and 4 through-hole pads are formed on the front half portion of the printed circuit board 103 and used for direct-insert welding of the WIFI and bluetooth antenna 105, the V2X antenna 106, the first 5G antenna 107, and the second 5G antenna 108, respectively. The shielding layers of the coaxial line 109, the coaxial line 1011, the coaxial line 1012 and the coaxial line 1013 are welded on the printed circuit board 103, and the wire cores are respectively welded at the feed points of the corresponding antenna units, so that the antenna can receive signals and transmit the signals to a receiver through the coaxial line. Coaxial cables for connecting the antennas are passed through the first surface to the second surface of the printed circuit board 103 via the branch connectors 1019.
The back half part of the printed circuit board 103 is a GNSS antenna area, the high-precision GNSS antenna 104 adopts an eight-arm helical antenna scheme, an antenna unit is made of FPC (flexible printed circuit) soft boards, eight antenna arms are attached to the FPC, and a circular polarization antenna can be formed by combining with a subsequent phase shifter; the bottom of the antenna is provided with eight feed points, eight windows are arranged at the projection position of the printed circuit board 103 corresponding to the lower part, the high-precision GNSS antenna 104 is connected to the printed circuit board 103 in a welding mode, and simultaneously, the eight feed points are also communicated with the low-noise amplification circuit on the bottom surface of the printed circuit board 103, the coaxial line 1010 is connected to the low-noise amplification circuit of the high-precision GNSS antenna 104 in a welding mode, so that the high-precision GNSS antenna 104 receives satellite signals, and the signals are amplified by the amplification circuit and then transmitted to a receiver through the coaxial line 1010. The high-precision GNSS antenna 104 can support the signal reception of four satellite navigation systems, namely, beidou, GPS, GLONASS, and Galileo.
In this embodiment, the first 5G antenna and the second 5G antenna are both monopole antennas using a PCB as a base material. First 5G antenna and second 5G antenna use PCB as the antenna substrate, and the inside copper-clad is walked the line and is the antenna oscillator, walks the line form and selects monopole to walk the line, and the resonance of realization broadband that can be more light has fine coverage 5G low, intermediate frequency.
This embodiment V2X antenna, WIFI and bluetooth two unification antenna uses PCB as the antenna substrate equally, and the inside copper-clad is walked the line and is the antenna oscillator, walks the line form and selects the PIFA to walk the line, can realize V2X signal, WIFI/bluetooth signal receiving and dispatching, and the size that should walk the line form can effectual reduction antenna simultaneously, the better inner space that utilizes whole combination antenna.
In some embodiments, the first side of the printed circuit board includes a first region and a second region, wherein the first region is divided into a third region and a fourth region, the third region and the fourth region are symmetrical regions, the first copper clad region is disposed in the third region, the second copper clad region is disposed in the fourth region, and the third copper clad region is disposed in the second region. The GNSS antenna is cylindrical, and the third copper-clad area is a circular area. The GNSS antenna is an eight-arm helical antenna.
Specifically, the implementation manner of the antenna PCB division decoupling technology provided by the above embodiment is as shown in fig. 2, the printed circuit board 103 is divided along parallel lines 1014, straight lines 1015 and a circle, i.e. the PCB motherboard copper-clad area is divided into three parts, namely a first copper-clad area 1017 (located in the third area), a second copper-clad area 1016 (located in the fourth area) and a third copper-clad area 1018 (located in the second area), and the shaded part in fig. 2 is a copper-free clearance area, so that the method can improve the inter-antenna isolation and improve the phase center stability of the high-precision GNSS antenna 104 to a certain extent.
On the antenna arrangement, first 5G antenna, second 5G antenna, V2X antenna and WIFI and bluetooth antenna all parallel arrangement, wherein first 5G antenna and WIFI and bluetooth antenna are in two different planes, and the projection of first 5G antenna in the plane that WIFI and bluetooth antenna are located does not overlap with WIFI and bluetooth antenna. The second 5G antenna and the V2X antenna are in different planes, and the projection of the second 5G antenna on the plane of the V2X antenna is not overlapped with the V2X antenna. The antenna layout is convenient to install, the structure saves space, and the degree of mutual interference between the antennas is low.
It is to be understood that in some embodiments, the second side of the printed circuit board is provided with at least one set of signal processing circuitry, and the signal processing circuitry is connected to at least one of the first 5G antenna, the second 5G antenna, the V2X antenna, the WIFI and bluetooth antenna, and the GNSS antenna. In some embodiments, the bottom of the printed circuit board 103 is provided with a low noise amplification circuit of the GNSS antenna. Similarly, a signal processing circuit may be provided for other antennas to increase the quality of the output signal of the antenna, thereby facilitating analysis of the signal content by the backend device.
In some embodiments, the first 5G antenna, and therefore the second 5G antenna, the V2X antenna, the WIFI and bluetooth antenna, and the GNSS antenna are all routed out via coaxial cables. As can be seen from the figure, the first 5G antenna, the second 5G antenna, the V2X antenna, the WIFI and bluetooth antenna, and the GNSS antenna are led out of the coaxial line 109, the coaxial line 1010, the coaxial line 1011, the coaxial line 1012, and the coaxial line 1013, respectively, and the end of the coaxial line is further provided with a Fakra connector. And the coaxial line is led out to facilitate the connection of the subsequent equipment.
The embodiment discloses a vehicle-mounted antenna module, which comprises the vehicle-mounted combined antenna and a signal processing module connected with the vehicle-mounted combined antenna. It is understood that the signal processing module may include a low noise amplifier, a signal demodulation circuit, and other circuits, and functions to convert the analog signal received by the antenna into a digital signal readable by the vehicle-mounted device.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present application and the technical principles employed. It will be understood by those skilled in the art that the present application is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the application. Therefore, although the present application has been described in more detail with reference to the above embodiments, the present application is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present application, and the scope of the present application is determined by the scope of the appended claims.
Claims (10)
1. An on-vehicle combination antenna, comprising:
the antenna comprises a first 5G antenna, a second 5G antenna, a WIFI and Bluetooth antenna, a V2X antenna and a GNSS antenna;
a printed circuit board, a first surface of which is provided with a first copper-clad region, a second copper-clad region and a third copper-clad region;
the first 5G antenna and the WIFI and Bluetooth antennas are installed in the first copper-clad area, the second 5G antenna and the V2X antenna are installed in the second copper-clad area, and the GNSS antenna is installed in the third copper-clad area.
2. The vehicular combination antenna of claim 1, wherein the second side of the printed circuit board is provided with at least one set of signal processing circuitry, and the signal processing circuitry is connected to at least one of the first 5G antenna, the second 5G antenna, the V2X antenna, the WIFI and bluetooth antenna, and the GNSS antenna.
3. The vehicle-mounted combined antenna according to claim 1, wherein the first surface of the printed circuit board includes a first region and a second region, the first region is divided into a third region and a fourth region, the third region and the fourth region are symmetrical regions, the first copper-clad region is provided in the third region, the second copper-clad region is provided in the fourth region, and the third copper-clad region is provided in the second region.
4. The on-board combination antenna of claim 3, wherein the GNSS antenna is in the shape of a cylinder and the third copper-clad area is a circular area.
5. The combined vehicle antenna of claim 4, wherein the GNSS antenna is an eight-arm helical antenna.
6. The vehicular combination antenna of claim 1, wherein the first 5G antenna is a primary set of 2X2MIMO antennas, and the second 5G antenna is a diversity antenna of 2X2MIMO antennas.
7. The vehicular combined antenna according to claim 6, wherein the first 5G antenna and the second 5G antenna are both monopole antennas based on a PCB.
8. The vehicular combination antenna according to claim 1, further comprising a housing, wherein the housing comprises a bottom case and a top case, the printed circuit board is fixed on the bottom case, and a space defined by the top case and the bottom case when the top case and the bottom case are mounted in a matching manner is used for accommodating the printed circuit board, the first 5G antenna, the second 5G antenna, the V2X antenna, the WIFI and bluetooth antenna, and the GNSS antenna.
9. The on-board combination antenna of claim 1, wherein the first 5G antenna, the second 5G antenna, the V2X antenna, the WIFI and bluetooth antenna, and the GNSS antenna are each respectively routed through different coaxial cables.
10. A vehicle antenna module comprising the vehicle combination antenna according to any one of claims 1 to 9 and a signal processing module connected to the vehicle combination antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120486177.2U CN213936540U (en) | 2021-03-05 | 2021-03-05 | Vehicle-mounted combined antenna and vehicle-mounted antenna module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120486177.2U CN213936540U (en) | 2021-03-05 | 2021-03-05 | Vehicle-mounted combined antenna and vehicle-mounted antenna module |
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| Publication Number | Publication Date |
|---|---|
| CN213936540U true CN213936540U (en) | 2021-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120486177.2U Active CN213936540U (en) | 2021-03-05 | 2021-03-05 | Vehicle-mounted combined antenna and vehicle-mounted antenna module |
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| Country | Link |
|---|---|
| CN (1) | CN213936540U (en) |
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2021
- 2021-03-05 CN CN202120486177.2U patent/CN213936540U/en active Active
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