US-20260128534-A1 - VEHICLE-MOUNTED COMBINED ANTENNA AND ELECTRONIC DEVICE

Abstract

In embodiments of the present application, signals received by a plurality of first antennas can be transmitted to a T-BOX through a first wiring harness. Correspondingly, the plurality of first antennas can also receive signals transmitted from the T-BOX through the first wiring harness and transmit the signals. Moreover, signals received by a second antenna can be transmitted to the T-BOX and a P-BOX through a second wiring harness and a third wiring harness, respectively, to facilitate positioning and network communication.

Inventors

• Mingjun Hang
• Wei Gu
• Junsen LI

Assignees

• QUECTEL WIRELESS SOLUTIONS CO., LTD.

Dates

Publication Date

20260507

Application Date

20251230

Claims (20)

1. 1 . A vehicle-mounted combined antenna, comprising a circuit board, a first wiring harness, a second wiring harness and a third wiring harness, wherein the circuit board is provided with a plurality of first antennas and at least one second antenna, the first wiring harness is connected with the plurality of first antennas through the circuit board, the second wiring harness and the third wiring harness are both connected with the second antenna through the circuit board; and the first wiring harness and the second wiring harness are connected with a telematics communication unit, and the third wiring harness is connected with a vehicle positioning module.
2. 2 . The vehicle-mounted combined antenna according to claim 1 , wherein the second antenna is arranged in a central area of the circuit board, and the plurality of first antennas are arranged on three sides of the circuit board.
3. 3 . The vehicle-mounted combined antenna according to claim 1 , wherein a first antenna having high antenna frequency among the plurality of first antennas is arranged on a long side of the circuit board, and a first antenna having a low antenna frequency among the plurality of first antennas is arranged on a short side of the circuit board.
4. 4 . The vehicle-mounted combined antenna according to claim 1 , further comprising a shielding cover, wherein the shielding cover is arranged in a central area of a side face, facing away from the second antenna, of the circuit board.
5. 5 . The vehicle-mounted combined antenna according to claim 1 , further comprising a power division feeding module, wherein the power division feeding module is located on the circuit board and arranged between the second antenna and the second and third wiring harnesses.
6. 6 . The vehicle-mounted combined antenna according to claim 1 , further comprising a first housing and a second housing, wherein the first housing and the second housing are snap-fitted to form an accommodating chamber, the circuit board is mounted in the accommodating chamber, and the first wiring harness, the second wiring harness and the third wiring harness extend out of the accommodating chamber.
7. 7 . The vehicle-mounted combined antenna according to claim 6 , wherein the plurality of first antennas are hot-melted on the first housing by using steel sheets.
8. 8 . The vehicle-mounted combined antenna according to claim 1 , wherein the plurality of first antennas comprise two 5G multiple-input multiple-output (MIMO) antennas, one 5G Main antenna and one 5G diversity antenna, and the second antenna is a ceramic high-precision positioning antenna or a global navigation satellite system (GNSS) active antenna.
9. 9 . The vehicle-mounted combined antenna according to claim 6 , wherein a fixing lug is arranged on a short side of the first housing, the fixing lug comprises a reinforcing rib and a fixing sheet, and the fixing sheet is provided with a fixing hole.
10. 10 . The vehicle-mounted combined antenna according to claim 7 , wherein a fixing lug is arranged on a short side of the first housing, the fixing lug comprises a reinforcing rib and a fixing sheet, and the fixing sheet is provided with a fixing hole.
11. 11 . An electronic device, comprising: a telematics communication unit, a vehicle positioning module and a vehicle-mounted combined antenna, wherein the vehicle-mounted combined antenna comprises a circuit board, a first wiring harness, a second wiring harness and a third wiring harness, the circuit board is provided with a plurality of first antennas and at least one second antenna, the first wiring harness is connected with the plurality of first antennas through the circuit board, the second wiring harness and the third wiring harness are both connected with the second antenna through the circuit board, the first wiring harness and the second wiring harness are connected with a telematics communication unit, and the third wiring harness is connected with a vehicle positioning module; and the vehicle-mounted combined antenna is connected with the telematics communication unit and the vehicle positioning module.
12. 12 . The electronic device according to claim 11 , wherein the second antenna is arranged in a central area of the circuit board, and the plurality of first antennas are arranged on three sides of the circuit board.
13. 13 . The electronic device according to claim 11 , wherein a first antenna having high antenna frequency among the plurality of first antennas is arranged on a long side of the circuit board, and a first antenna having a low antenna frequency is arranged on a short side of the circuit board.
14. 14 . The electronic device according to claim 11 , wherein the vehicle-mounted combined antenna further comprises a shielding cover, the shielding cover is arranged in a central area of a side face, facing away from the second antenna, of the circuit board.
15. 15 . The electronic device according to claim 11 , wherein the vehicle-mounted combined antenna further comprises a power division feeding module, the power division feeding module is located on the circuit board and arranged between the second antenna and the second and third wiring harnesses.
16. 16 . The electronic device according to claim 11 , wherein the vehicle-mounted combined antenna further comprises a first housing and a second housing, the first housing and the second housing are snap-fitted to form an accommodating chamber, the circuit board is mounted in the accommodating chamber, and the first wiring harness, the second wiring harness and the third wiring harness extend out of the accommodating chamber.
17. 17 . The electronic device according to claim 16 , wherein the plurality of first antennas are hot-melted on the first housing by using steel sheets.
18. 18 . The electronic device according to claim 11 , wherein the plurality of first antennas comprise two 5G MIMO antennas, one 5G Main antenna and one 5G diversity antenna, and the second antenna is a ceramic high-precision positioning antenna or a GNSS active antenna.
19. 19 . The electronic device according to claim 16 , wherein a fixing lug is arranged on a short side of the first housing, the fixing lug comprises a reinforcing rib and a fixing sheet, and the fixing sheet is provided with a fixing hole.
20. 20 . The electronic device according to claim 17 , wherein a fixing lug is arranged on a short side of the first housing, the fixing lug comprises a reinforcing rib and a fixing sheet, and the fixing sheet is provided with a fixing hole.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS The present application is a continuation of International Application No. PCT/CN2023/122237, filed on Sep. 27, 2023, the disclosure of which is hereby incorporated by reference in its entirety. TECHNICAL FIELD The present application relates to the technical field of antennas, in particular to a vehicle-mounted combined antenna and an electronic device. BACKGROUND With the continuous advancement of automobile intelligence and networking, vehicle-to-everything technology is becoming increasingly mature. Vehicle-to-everything refers to the interconnection and communication between automobiles and everything else. As a front-end component of an entire vehicle-to-everything system, vehicle-mounted antennas are needed for positioning and transmitting all location data and communication data. Therefore, the performance of the vehicle-mounted antennas directly affects the performance of the entire vehicle-to-everything system. In conventional schemes, vehicle-mounted antennas are designed inside a telematics communication unit (Telematics BOX, T-BOX). Since the T-BOX contains various communication components such as a radio frequency circuit and a power amplifier, the internal space is limited. As a result, when multiple antennas are integrated into the T-BOX, their distribution is relatively compact, which is prone to poor antenna isolation. In addition, the radio frequency circuit and the like produce electromagnetic waves during operation, which can cause electromagnetic interference to the antennas and affect the transceiving performance of the antennas. Therefore, the vehicle-mounted antenna solutions provided in the conventional schemes cannot meet the requirements of current automobiles for vehicle communication. SUMMARY Embodiments of the present application are directed to provide a vehicle-mounted combined antenna and an electronic device, as described below in the following aspects. In a first aspect, a vehicle-mounted combined antenna is provided. The vehicle-mounted combined antenna includes a circuit board, a first wiring harness, a second wiring harness and a third wiring harness. The circuit board is provided with a plurality of first antennas and at least one second antenna, the first wiring harness is connected with the plurality of first antennas through the circuit board, the second wiring harness and the third wiring harness are both connected with the second antenna through the circuit board, the first wiring harness and the second wiring harness are connected with a telematics communication unit, and the third wiring harness is connected with a vehicle positioning module. In one of the embodiments, the second antenna is arranged in a central area of the circuit board, and the plurality of first antennas are arranged on three sides of the circuit board. In one of the embodiments, a first antenna having a high antenna frequency among the plurality of first antennas is arranged on a long side of the circuit board, and a first antenna having a low antenna frequency is arranged on a short side of the circuit board. In one of the embodiments, the vehicle-mounted combined antenna further includes a shielding cover, where the shielding cover is arranged in a central area of a side face, facing away from the second antenna, of the circuit board. In one of the embodiments, the vehicle-mounted combined antenna further includes a power division feeding module, where the power division feeding module is located on the circuit board and arranged between the second antenna and the second and third wiring harnesses. In one of the embodiments, the vehicle-mounted combined antenna further includes a first housing and a second housing, where the first housing and the second housing are snap-fitted to form an accommodating chamber, the circuit board is mounted in the accommodating chamber, and the first wiring harness, the second wiring harness and the third wiring harness extend out of the accommodating chamber. In one of the embodiments, the plurality of first antennas are hot-melted on the first housing by using steel sheets. In one of the embodiments, the plurality of first antennas include two 5G MIMO antennas, one 5G Main antenna and one 5G diversity antenna, and the second antenna is a ceramic high-precision positioning antenna or a global navigation satellite system (GNSS) active antenna. In one of the embodiments, a fixing lug is arranged on a short side of the first housing, the fixing lug includes a reinforcing rib and a fixing sheet, and the fixing sheet is provided with a fixing hole. In a second aspect, an electronic device is provided, including: a telematics communication unit, a vehicle positioning module and the vehicle-mounted combined antenna as disclosed in the first aspect above. The vehicle-mounted combined antenna is connected with the telematics communication unit and the vehicle positioning module. In the embodiments of the present application,