CN213989188U

CN213989188U - Vehicle-mounted multi-module antenna

Info

Publication number: CN213989188U
Application number: CN202023315108.XU
Authority: CN
Inventors: 王红洋; 孙力; 张伟伟
Original assignee: Fuba Automotive Antenna Suzhou Co ltd
Current assignee: Fuba Automotive Antenna Suzhou Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-08-17
Anticipated expiration: 2030-12-31

Abstract

The utility model relates to an on-vehicle multimode module antenna, be in including shell and setting the shell in PCBA, PCBA include PCB, GNSS antenna, 4G antenna, at least one GNSS output joint and 4G output joint, GNSS antenna, 4G antenna, GNSS output joint, 4G output joint integrated one PCB on, the GNSS antenna pass through the circuit with GNSS output joint be linked together, 4G antenna pass through the circuit with 4G output joint be linked together. The utility model is provided with only one PCBA, a 4G antenna and a GNSS antenna are arranged on one PCB of the PCBA, and the PCBA has multi-channel output, can meet the transmission of a plurality of signals, and has high integration and moderate volume; the receiving effect is good, and different installation position requirements can be met; strong stability, convenient production and assembly.

Description

Vehicle-mounted multi-module antenna

Technical Field

The utility model relates to an on-vehicle wireless communication field, concretely relates to on-vehicle multimode module antenna.

Background

With the popularization of 4G, 4G signals are also put into the automobile industry for use, in the prior art, the 4G antenna and the GNSS antenna are respectively and independently arranged and then integrated in a shark fin and then arranged on a vehicle roof, but the shark fin has larger volume, so that the wind resistance is increased, and a longer coaxial line is required to be connected to a host or a T-Box; and 4G antenna and GNSS antenna make independent antenna, and the antenna quantity increases, and the cost increases, can increase the part management degree of difficulty and the loaded down with trivial details nature of installation of host computer factory.

Disclosure of Invention

The utility model aims at providing an on-vehicle multimode piece antenna.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the utility model provides an on-vehicle multi-module antenna, includes the shell and sets up the PCBA in the shell, the PCBA include PCB, GNSS antenna, 4G antenna, at least one GNSS output joint and 4G output joint, GNSS antenna, 4G antenna, GNSS output joint, 4G output joint integrated on one the PCB on, the GNSS antenna pass through the circuit with GNSS output joint be linked together, 4G antenna pass through the circuit with 4G output joint be linked together.

Preferably, the GNSS antenna is coupled to the PCB.

Preferably, a 4G feed point is arranged on the PCB, and the 4G antenna is connected to the PCB through the 4G feed point.

Preferably, a wave trap is arranged on a circuit between the 4G antenna and the 4G output connector.

Preferably, a 4G diagnostic resistor is arranged on a circuit between the 4G antenna and the 4G output connector.

Preferably, the GNSS output connector and the 4G output connector are connected to the PCB by SMT.

Preferably, the number of the GNSS output joints and the number of the 4G output joints are two, the two GNSS output joints and/or the 4G output joints are located at one end of the PCB, and the two GNSS output joints and/or the 4G output joints are located at the other end of the PCB.

Preferably, the output joint is a Fakra joint.

Preferably, two 4G antennas are arranged.

Further preferably, two 4G antennas are located on two sides of the GNSS antenna.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model is provided with only one PCBA, a 4G antenna and a GNSS antenna are arranged on one PCB of the PCBA, and the PCBA has multi-channel output, can meet the transmission of a plurality of signals, and has high integration and moderate volume; the receiving effect is good, and different installation position requirements can be met; strong stability, convenient production and assembly.

Drawings

Fig. 1 is a top view of a vehicle-mounted multi-module antenna according to the present embodiment;

FIG. 2 is a front view of a vehicle-mounted multi-module antenna according to the present embodiment;

FIG. 3 is a side view of an in-vehicle multi-module antenna according to the present embodiment;

FIG. 4 is a perspective view of the PCBA in the present embodiment;

FIG. 5 is a schematic view of the back side of the PCBA in this embodiment;

FIG. 6 is a perspective view of the base in the present embodiment;

FIGS. 7-10 are graphs showing the results of testing the S parameters of the GNSS antenna for low noise amplification in this embodiment

FIGS. 11-12 are schematic diagrams illustrating the relationship between the efficiency and the frequency of the GNSS antenna in this embodiment;

fig. 13-16 are schematic diagrams showing the relationship between the efficiency and the frequency of two 4G antennas in this embodiment.

In the above drawings: 11. an upper cover; 12. a base; 121. a through hole; 122. an installation part; 2. PCBA; 21. a PCB; 22. a GNSS antenna; 23. a 4G antenna; 24. a GNSS output joint; 25. 4G output joint; 26. a wave trap; 27. 4G diagnosis resistance.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed 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 is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

1-3, an on-board multi-module antenna, which may provide for the transmission of both GNSS signals and 4G signals using a single PCBA2 and may be transmitted in multiple channels, includes a housing and a PCBA2 disposed within the housing. In this embodiment, the housing is made of plastic.

As shown in fig. 4 and 5, the PCBA2 includes a PCB21, GNSS antennas 22, 4G antennas 23, GNSS output terminals 24, 4G output terminals 25, only one PCB21 is provided, and the GNSS antennas 22, 4G antennas 23, GNSS output terminals 24, 4G output terminals 25 are all integrated onto the PCB 21. In the present embodiment, the PCB21 is a rectangular plate-shaped board, and the corresponding housing shape is a rectangular parallelepiped.

The GNSS antenna 22 is made of magnesium-aluminum alloy and is connected to the PCB21 in a coupling manner, only one GNSS antenna 22 is arranged and located in the center of the PCB21, the connected GNSS antenna 22 is connected with the GNSS output connector 24 through a circuit on the PCB21, and GNSS signals are divided into two paths and output respectively through an SMD resistor network in the circuit.

4G antenna 23 adopts the metal material and is provided with two, be 4G main antenna and 4G auxiliary antenna respectively, play the same effect, set up two 4G antennas 23 and can strengthen the receiving capability of 4G signal, promote the received strength of 4G signal, two 4G antennas 23 are located the coplanar with GNSS antenna 22, two 4G antennas 23 are located the both ends of this side of PCB21, GNSS antenna 22 is located the centre of two 4G antennas 23, this kind increases the decoupling zero characteristic that distance on the physical position can increase two 4G antennas 23. The PCB21 is provided with a feed point of 4G, the 4G antenna 23 is connected with the PCB21 through the feed point connected with the 4G and is reinforced and fixed through a welding process, thus poor contact caused by vibration can be prevented, and the connected 4G antenna 23 is connected with the 4G output connector 25 through a circuit. A wave trap 26 consisting of L, C, R and a 4G diagnostic resistor 27 are also provided on the circuit connected between the 4G antenna 23 and the 4G output connector 25 to stabilize the 4G signal. The wave trap 26 and the 4G diagnostic resistor 27 are arranged on the opposite side of the GNSS antennas 22 and 4G antennas 23.

GNSS output connects 24 and 4G output connects 25 all adopt the Fakra to connect and respectively be provided with two, and PCB 21's both ends are provided with two Fakra respectively and connect, and the output that specifically corresponds is confirmed through the circuit on the modification PCB21 according to actual need, can pass through after setting up different colours in order to distinguish different output on the Fakra connects. The GNSS output terminals 24 and the 4G output terminals 25 are connected to two ends of the PCB21 by SMT, and the terminals are oriented towards two sides, and the same end of the PCB21 may be two GNSS output terminals 24 or two 4G output terminals 25 at the same time, or may be one GNSS output terminal 24 and one 4G output terminal 25. Two GNSS output terminals 24 are used for connecting the host and the T-BOX respectively, and two 4G output terminals 25 are used for connecting the T-BOX.

The housing shown in figures 1-3 and 6 comprises a top cover 11 and a base 12. the PCBA2, with its components arranged, is attached to the base 12 by means of fastener elements, in this embodiment self-tapping screws, in the number of 4. Through holes 121 are formed in the side walls at the two ends of the base 12, and the Fakra can conveniently extend out of the shell. The shape of the cover 11 is configured to accommodate different heights of the GNSS antenna 22 and the 4G antenna 23, which may assist in securing the PCBA 2. The two ends of the housing are respectively provided with a mounting part 122, the mounting parts 122 are used for being connected with the vehicle body, and the two ends are respectively provided with a mounting part 122 and are positioned between the two through holes 121. The casing is whole rather than the inside PCBA2 laminating mutually, both be convenient for fixed inside PCBA2, reduced the volume simultaneously, can direct mount under the well accuse platform of car, reduce the coaxial line of connection.

As shown in fig. 7-10, S21 and S31 respectively indicate gains of two output ports for S parameter test results of GNSS low noise amplifier, which satisfy the requirements of the navigation system. S22 also shows well that the amplifier output impedance matching is good. As shown in fig. 11-12, it can be seen that the efficiency of the GNSS antenna 22 is 50% or more in the effective operating band, and the maximum gain is 3dBi or more.

As shown in the test results shown in fig. 13-16, the impedances of LTE1 and LTE2 (i.e., for transmitting 4G signals) both meet the design standard, and the efficiency at different frequency bands is very good to meet the performance requirement.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. An on-vehicle multimode module antenna, includes the shell and sets up the PCBA in the shell, its characterized in that: the PCBA include PCB, GNSS antenna, 4G antenna, at least one GNSS output joint and 4G output joint, GNSS antenna, 4G antenna, GNSS output joint, 4G output joint integrated on one the PCB, the GNSS antenna pass through the circuit with GNSS output joint be linked together, 4G antenna pass through the circuit with 4G output joint be linked together.

2. A multi-module antenna according to claim 1, characterized in that: the GNSS antenna is connected with the PCB through coupling.

3. A multi-module antenna according to claim 1, characterized in that: the PCB is provided with a 4G feed point, and the 4G antenna is connected with the PCB through the 4G feed point.

4. A multi-module antenna according to claim 1, characterized in that: and a wave trap is arranged on a circuit between the 4G antenna and the 4G output joint.

5. A multi-module antenna according to claim 1, characterized in that: and a 4G diagnosis resistor is arranged on a circuit between the 4G antenna and the 4G output connector.

6. A multi-module antenna according to claim 1, characterized in that: the GNSS output connector and the 4G output connector are connected with the PCB in an SMT mode.

7. A multi-module antenna according to claim 1, characterized in that: GNSS output connect and 4G output connect and all be provided with two, two GNSS output connect and/or 4G output connect and be located PCB one end, two GNSS output connect and/or 4G output connect and be located the PCB other end.

8. A multi-module antenna according to claim 1, characterized in that: the output joint adopts a Fakra joint.

9. A multi-module antenna according to claim 1, characterized in that: the 4G antenna is provided with two antennas.

10. A multi-module antenna according to claim 9, wherein: the two 4G antennas are positioned on two sides of the GNSS antenna.