CN215773707U

CN215773707U - Antenna mainboard

Info

Publication number: CN215773707U
Application number: CN202122238853.7U
Authority: CN
Inventors: 单家义; 杨章君
Original assignee: Shenzhen Liangdao Technology Co ltd
Current assignee: Shenzhen Liangdao Technology Co ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2022-02-08
Anticipated expiration: 2031-09-15

Abstract

The utility model relates to the field of satellite navigation antennas, in particular to an antenna main board which comprises a base board, a PCB (printed Circuit Board), a shielding cover and a lightning protection module which are sequentially connected, wherein a low-noise amplifying circuit is arranged on the PCB, a shielding cover cap is arranged on the low-noise amplifying circuit to prevent the interference of electromagnetic signals, the shielding cover comprises a top board and a coaming, the top board is covered on the coaming, the coaming blocks the low-noise amplifying circuit, a first mounting hole is arranged on the top board, a mounting stud corresponding to the first mounting hole is arranged on the PCB, the shielding cover is screwed with the mounting stud through a screw passing through the first mounting hole to be mounted on the PCB, the shielding cover of the utility model is mounted on the PCB through a screw to prevent elements on the PCB from being damaged due to the high temperature caused by welding, a plug at the bottom of the lightning protection module passes through a through hole on the top board to be clamped with a socket on the PCB, so that the lightning protection module can cover the through hole on the top board after being mounted, the anti-interference performance of the antenna main board is improved.

Description

Antenna mainboard

Technical Field

The utility model relates to the field of choke coil antennas, in particular to an antenna main board.

Background

The shield cover on the antenna mainboard on the market at present has mostly designed the welding area, fix in on the PCB mainboard through the welding, but the temperature is higher in the time of the welding, cause the component of PCB board to damage more easily, the quality that leads to the antenna mainboard is uneven, in addition, lightning protection module on the shield cover is generally direct through the electric wire with the PCB mainboard on the low noise amplifier circuit electricity be connected, so generally can set up a connecting hole on the shield cover and supply the connecting wire of lightning protection module to pass through, but the interference that has electromagnetic signal just can not realize complete shielding like this, the signal that leads to the antenna mainboard is unstable.

SUMMERY OF THE UTILITY MODEL

The utility model provides an antenna main board for solving the defects and shortcomings processed by the prior art.

In order to achieve the above object, the technical scheme adopted by the utility model is that an antenna main board comprises a substrate, a PCB, a shielding cover and a lightning protection module which are connected in sequence, wherein a low-noise amplification circuit is arranged on the PCB, the shielding cover is arranged on the low-noise amplification circuit to prevent interference of electromagnetic signals, the shielding cover comprises a top plate and a coaming, the top plate is arranged on the coaming in a covering manner, the coaming blocks the low-noise amplification circuit, a first mounting hole is arranged on the top plate, the PCB is provided with a mounting stud corresponding to the first mounting hole, and the shielding cover penetrates through the first mounting hole through a screw to be screwed with the mounting stud to be mounted on the PCB.

The lightning protection module is characterized in that a socket is arranged on the PCB, a plug matched with the socket is arranged at the bottom of the lightning protection module, a through hole is formed in the top plate, and the plug penetrates through the through hole and is clamped with the socket to achieve electric connection of the PCB and the lightning protection module.

And a second mounting hole corresponding to the first mounting hole is formed in the lightning protection module, and screws penetrate through the first mounting hole and the second mounting hole to be screwed with the mounting studs so as to realize the mounting of the lightning protection module, the shielding cover and the PCB.

The substrate is made of ceramic.

The utility model has the beneficial effects that:

the utility model provides an antenna main board, wherein a shielding case is arranged on a PCB (printed circuit board) through screws, so that a welding step is not needed, elements on the PCB are prevented from being damaged due to high temperature of welding, a plug at the bottom of a lightning protection module penetrates through a through hole in a top plate to be clamped with a socket on the PCB, the lightning protection module can cover the through hole in the top plate after the antenna main board is arranged, no gap and no through hole exist on the appearance of the whole antenna main board, the anti-interference performance of the antenna main board is improved, meanwhile, the quality of the antenna main board is improved, the antenna main board is more convenient and faster to install through screws than welding, and the safety is higher.

Drawings

Fig. 1 is a schematic diagram of an antenna main board according to the present invention;

fig. 2 is an exploded view of an antenna main board according to the present invention;

fig. 3 is another exploded view of an antenna main board according to the present invention;

fig. 4 is a schematic diagram of a shielding case of an antenna main board according to the present invention.

Detailed Description

The utility model will be described in further detail with reference to the accompanying drawings, which are simplified schematic drawings and only schematically illustrate the basic structure of the utility model, and the direction of the embodiment is based on the direction of fig. 1.

As shown in fig. 1 to 4, an antenna main board includes a substrate 1, a PCB 2, a shielding cover 3, and a lightning protection module 4, which are connected in sequence, wherein a low noise amplifier circuit is disposed on the PCB 2, the shielding cover 3 is disposed on the low noise amplifier circuit to prevent interference of electromagnetic signals, the shielding cover 3 includes a top plate 31 and a surrounding plate 32, the top plate 31 is disposed on the surrounding plate 32, the surrounding plate 32 surrounds the low noise amplifier circuit, a first mounting hole 33 is disposed on the top plate 31, the PCB 2 is disposed with a mounting stud 21 corresponding to the first mounting hole 33, and the shielding cover 3 is screwed with the mounting stud 21 through a screw passing through the first mounting hole 33 to be mounted on the PCB 2.

In the prior art, the coaming 32 of the shielding case 3 is welded on the PCB 2 by welding, so that the process is troublesome, the elements of the PCB 2 are easy to damage, and the appearance is not beautiful. And shield cover 3 is the tensile no edge joint shaping of metal sheet, has the precision height, characteristics that intensity is high.

The PCB 2 is provided with a socket 22, the bottom of the lightning protection module 4 is provided with a plug 41 matched with the socket 22, the top plate 31 is provided with a through hole 34, and the plug 41 penetrates through the through hole 34 to be clamped with the socket 22 so as to realize the electric connection between the PCB 2 and the lightning protection module 4. This avoids the problem of exposed wires and makes the connection between the socket 22 and the plug 41 more convenient and faster. The plug 41 of the lightning protection module 4 is inserted into the socket 22 of the PCB 2 to cover the through hole 34, thereby preventing the interference of the electromagnetic signal.

The lightning protection module 4 is provided with a second mounting hole 42 corresponding to the first mounting hole 33, and screws pass through the first mounting hole 33 and the second mounting hole 42 to be screwed with the mounting studs 21 so as to mount the lightning protection module 4, the shielding case 3 and the PCB 2.

The substrate 1 is made of ceramic or an antenna-dedicated base material. The bottom of the substrate is provided with a precision positioning mounting hole to ensure consistency with the physical phase center of the choke base.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides an antenna main board, is including base plate (1), PCB board (2), shield cover (3), lightning protection module (4) that connect gradually, be provided with low-noise amplifier circuit on PCB board (2), shield cover (3) lid is located the last interference in order to prevent electromagnetic signal of low-noise amplifier circuit, its characterized in that: shield cover (3) include roof (31), bounding wall (32), roof (31) lid is located on bounding wall (32), bounding wall (32) will low noise amplifier circuit encloses the fender, be provided with first mounting hole (33) on roof (31), PCB board (2) be provided with first mounting hole (33) corresponding installation double-screw bolt (21), shield cover (3) pass through the screw first mounting hole (33) with installation double-screw bolt (21) spiral shell joint is in order to install in on PCB board (2).

2. The antenna motherboard of claim 1, wherein: be provided with socket (22) on PCB board (2), the bottom of lightning protection module (4) be provided with socket (22) matched with plug (41), be provided with through-hole (34) on roof (31), plug (41) pass through-hole (34) with socket (22) block is in order to realize PCB board (2) with the electricity of lightning protection module (4) is connected.

3. The antenna motherboard of claim 2, wherein: and a second mounting hole (42) corresponding to the first mounting hole (33) is formed in the lightning protection module (4), and screws penetrate through the first mounting hole (33) and the second mounting hole (42) to be screwed with the mounting studs (21) so as to realize the mounting of the lightning protection module (4), the shielding cover (3) and the PCB (2).

4. The antenna motherboard of claim 3, wherein: the substrate (1) is made of ceramic.