Multi-mode four-antenna device of automobile cabin domain controller

Abstract

A multi-mode four-antenna device of an automobile cockpit area controller comprises the cockpit area controller, the cockpit area controller comprises a shell, two installation grooves are formed in the outer side face of the shell, the installation grooves penetrate downwards from the upper surface of the shell to the lower surface of the shell, a PCB is installed in each installation groove, PCB antennas are arranged on the PCBs, and the PCB antennas are arranged in the installation grooves. The outer sides of the two PCB antennas are respectively provided with a half-surrounded metal shell, and the shell is provided with a U-shaped plastic cover for covering the mounting groove; the surface of the housing is provided with two external antennas, and the housing is provided with a sinking groove used for installing the external antennas. The mounting groove penetrating through the upper surface and the lower surface of the shell can enlarge the signal transmission space of the PCB antenna, and the plastic material of the U-shaped plastic cover does not block signal transmission. The half-surrounded metal shell can shield signals, increase the isolation between the PCB antennas, and reduce the interference between the PCB antennas. And the external antenna is arranged in the sinking groove, so that the isolation degree can be increased.

Description

Technical Field

[0001] This utility model relates to the field of electrical engineering, and more particularly to antennas, especially a multimode four-antenna device for an automotive cockpit domain controller. Background Technology

[0002] With the rapid development of intelligent vehicles, the demand for wireless communication in vehicle cockpit domain controllers is increasing. Currently, antenna designs for intelligent cockpits are mainly divided into two types: PCB antennas and external antennas. PCB antennas are antenna structures directly integrated onto a printed PCB, while external antennas are antenna modules independent of the PCB. Both types of antennas have certain drawbacks: when multiple PCB antennas are arranged close together and operate simultaneously, the isolation is poor, and the antennas are prone to interference, making it difficult to meet usage requirements; while external antennas require additional structural design, increasing the cost of cables and connectors. Utility Model Content

[0003] The purpose of this utility model is to provide a multi-mode four-antenna device for an automotive cockpit domain controller. The multi-mode four-antenna device for an automotive cockpit domain controller aims to solve the technical problems of poor isolation when PCB antennas are laid out in close proximity and the increased cost of external antennas due to the need for additional structural design.

[0004] This utility model discloses a multi-mode four-antenna device for an automotive cockpit domain controller, including a cockpit domain controller. The cockpit domain controller includes a housing, and two mounting slots are provided on the outer side of the housing. The mounting slots extend from the upper surface of the housing downward to the lower surface of the housing. A PCB board is installed in each of the two mounting slots, and a PCB antenna is provided on the PCB board. A semi-enclosed metal shell is provided on the outside of each of the two PCB antennas. An opening is provided on the outer, upper, and lower sides of the semi-enclosed metal shell. A U-shaped plastic cover is provided on the housing to cover the mounting slots.

[0005] The surface of the housing is provided with two external antennas, which are respectively located on the side and top surface of the housing. The housing is provided with recessed grooves for mounting the external antennas.

[0006] The cockpit domain controller is equipped with a Bluetooth module, a 5G WiFi module, and a 2.4G WiFi module. Both PCB antennas are connected to the Bluetooth module. One external antenna is connected to both the Bluetooth module and the 5G WiFi module, and the other external antenna is connected to both the 5G WiFi module and the 2.4G WiFi module.

[0007] Furthermore, the two PCB antennas are respectively located on the front and left sides of the housing.

[0008] Furthermore, the PCB antenna is in the form of a serpentine inverted F.

[0009] Furthermore, the two external antennas are mounted on the front side and top surface of the housing respectively using screws.

[0010] Compared with existing technologies, this invention offers positive and significant advantages. The mounting slots penetrating the upper and lower surfaces of the housing increase the signal transmission space for the PCB antenna, and the plastic material of the U-shaped plastic cover does not obstruct signal transmission. The semi-enclosed metal shell shields the signal, increases the isolation between PCB antennas, and reduces interference between them. The external antennas are installed in the recessed slots, further increasing isolation. The PCB antennas function as Bluetooth antennas, with the two external antennas supporting 5G WiFi and Bluetooth multiplexing and 5G WiFi and 2.4G WiFi multiplexing respectively, allowing simultaneous operation of Bluetooth, 5G WiFi, and 2.4G WiFi signals to meet performance requirements. Using two PCB antennas instead of two external antennas saves costs. Attached Figure Description

[0011] Figure 1 This is a first schematic diagram of a multi-mode four-antenna device for an automotive cockpit domain controller according to the present invention.

[0012] Figure 2 This is a first schematic diagram showing the opening of the U-shaped plastic cover of a multi-mode four-antenna device for an automotive cockpit domain controller according to the present invention.

[0013] Figure 3 This is a second schematic diagram of a multimode four-antenna device for an automotive cockpit domain controller according to the present invention.

[0014] Figure 4 This is a third schematic diagram of a multi-mode four-antenna device for an automotive cockpit domain controller according to the present invention.

[0015] Figure 5 This is a second schematic diagram showing the opening of the U-shaped plastic cover of a multi-mode four-antenna device for an automotive cockpit domain controller according to this utility model. Detailed Implementation

[0016] The present invention will be further described below with reference to embodiments, but the present invention is not limited to these embodiments. Any similar variations using the present invention should be included within the protection scope of the present invention. The use of directions such as up, down, front, back, left, right, center, inside, and outside in the present invention is only for the convenience of clear description and is not intended to limit the technical solution of the present invention.

[0017] like Figures 1-5As shown, this utility model discloses a multi-mode four-antenna device for an automotive cockpit domain controller, including a cockpit domain controller. The cockpit domain controller includes a housing 1. Two mounting slots 2 are provided on the outer side of the housing 1. The mounting slots 2 extend from the upper surface of the housing 1 downward to the lower surface of the housing 1. A PCB board 3 is installed in each of the two mounting slots 2. A PCB antenna 4 is provided on the PCB board 3. A semi-enclosed metal shell 5 is provided on the outer side of each of the two PCB antennas 4. An opening is provided on the outer side, upper side, and lower side of the semi-enclosed metal shell 5. A U-shaped plastic cover 6 is provided on the housing 1 to cover the mounting slots 2.

[0018] Two external antennas 7 are provided on the surface of the housing 1. The two external antennas 7 are respectively provided on the side and the top surface of the housing 1. The housing 1 is provided with a recessed groove 8 for installing the external antennas 7.

[0019] The cockpit domain controller is equipped with a Bluetooth module, a 5G WiFi module, and a 2.4G WiFi module. Both PCB antennas 4 are connected to the Bluetooth module. One external antenna 7 is connected to both the Bluetooth module and the 5G WiFi module, and the other external antenna 7 is connected to both the 5G WiFi module and the 2.4G WiFi module.

[0020] The mounting slots 2, penetrating the upper and lower surfaces of the housing 1, increase the signal transmission space of the PCB antenna 4, and the plastic material of the U-shaped plastic cover 6 does not obstruct signal transmission. The semi-enclosed metal shell 5 shields the signal, increases the isolation between the PCB antennas 4, and reduces interference between them. The external antenna 7 is installed in the recessed slot 8, which further increases isolation. The PCB antenna 4 is used as a Bluetooth antenna, and the two external antennas 7 are used for 5G WiFi and Bluetooth multiplexing and 5G WiFi and 2.4G WiFi multiplexing, respectively, supporting simultaneous operation of Bluetooth, 5G WiFi, and 2.4G WiFi signals to meet performance requirements. Using two PCB antennas 4 instead of two external antennas 7 saves costs.

[0021] Furthermore, the two PCB antennas 4 are respectively located on the front and left sides of the housing 1, which can increase the isolation between them.

[0022] Furthermore, the PCB antenna 4 is in the shape of a serpentine inverted F.

[0023] Furthermore, the two external antennas 7 are respectively mounted on the front side and the top surface of the housing 1 with screws, which can increase the isolation between them.

[0024] Isolation test results among the four antennas: In the 2.4GHz band, the isolation between the left PCB antenna 4 and the front PCB antenna 4, as well as the front external antenna 7, is greater than 25dB. The isolation between the top external antenna 7 and the left PCB antenna 4, the front PCB antenna 4, and the front external antenna 7 is greater than 35dB. In the 5GHz band, the isolation between the front external antenna 7 and the top external antenna 7 is greater than 35dB.

[0025] Specifically, the specific structure and principle of the housing 1, PCB board 3, PCB antenna 4, external antenna 7, Bluetooth module, 5G WiFi module, 2.4G WiFi module, serpentine inverted F-shaped structure, and other aspects not described in detail all adopt known solutions in the prior art, which are already understood by those skilled in the art and will not be elaborated here.

Claims

1. A multi-modal four antenna arrangement for an automotive cabin domain controller, comprising a cabin domain controller, the cabin domain controller comprising a housing, characterized in that, Two mounting grooves are arranged in the outer side of the shell, the mounting grooves penetrate from the upper surface of the shell to the lower surface of the shell, one PCB board is arranged in each of the two mounting grooves, a PCB antenna is arranged on the PCB board, a half-enclosing metal shell is arranged on the outer side of each of the two PCB antennas, an opening is arranged on the outer side, upper side and lower side of the half-enclosing metal shell respectively, and a U-shaped plastic cover for covering the mounting grooves is arranged on the shell; Two external antennas are arranged on the surface of the shell, the two external antennas are arranged on the side surface and the upper surface of the shell respectively, and a sunken groove for mounting the external antennas is arranged on the shell. The cabin domain controller is provided with a Bluetooth module, a 5G WiFi module and a 2.4G WiFi module, the two PCB antennas are connected to the Bluetooth module, one of the external antennas is connected to the Bluetooth module and the 5G WiFi module, and the other external antenna is connected to the 5G WiFi module and the 2.4G WiFi module.

2. The multi-modal four antenna device for an automotive cabin domain controller of claim 1, wherein, The two PCB antennas are arranged on the front side and the left side of the shell respectively.

3. The multi-modal four antenna device for an automotive cabin domain controller of claim 1, wherein, The PCB antenna is in the shape of a snake-shaped inverted F.

4. The multi-modal four antenna device for an automotive cabin domain controller of claim 1, wherein, The two external antennas are mounted on the front side and the upper surface of the shell through screws.

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