CN213847327U

CN213847327U - Anti-interference circuit and PON device

Info

Publication number: CN213847327U
Application number: CN202022784246.6U
Authority: CN
Inventors: 黄帅; 黄强; 苏小满; 李亚朋
Original assignee: Shenzhen Twowing Technology Co ltd
Current assignee: Shenzhen Twowing Technology Co ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-07-30
Anticipated expiration: 2030-11-26

Abstract

The application discloses anti jamming circuit and PON device, anti jamming circuit is through the relative both ends at the circuit board that the regional distribution of the first region that will be provided with BOSA drive assembly and the second that is provided with WIFI drive assembly, and sets up the median between first region and second region, makes BOSA drive assembly and WIFI drive assembly can have sufficient interval on the circuit board to reduce the signal mutual interference between BOSA drive assembly and the WIFI drive assembly.

Description

Anti-interference circuit and PON device

Technical Field

The application belongs to the technical field of equipment jam-proof, and particularly relates to an anti-jamming circuit and a PON device.

Background

The main frequency ranges of a BOSA module in a Board-based solution (BOSA ON Board, Bi-directional Optical Sub-Assembly (BOSA) BOB) product are 100M, 1.25G, 2.5G, 4.25G, 4.9G, 6G, 8G, and 10G, and the main frequency ranges of a WIFI (Wireless Fidelity) module are 2.4G and 5G, so that the operating frequencies of the BOSA module and the WIFI module are in an adjacent frequency or frequency multiplication relationship, and a Passive Optical Network (PON) product integrates the BOSA module and the WIFI module ON a circuit Board at the same time, so that signal interference between the BOSA module and the WIFI module needs to be avoided.

SUMMERY OF THE UTILITY MODEL

An object of this application is to provide an anti jamming circuit, aims at solving the problem that there is signal interference in the circuit of traditional BOSA module and WIFI module that exists simultaneously.

The first aspect of the embodiment of the application provides an anti-jamming circuit, including circuit board, BOSA driver component and WIFI driver component, BOSA driver component sets up the first region of circuit board, the WIFI driver component sets up the second region of circuit board, first region with the second region is located respectively the relative both ends of circuit board to separate mutually by a median.

In one embodiment, the BOSA driving assembly further comprises a first shielding cover connected with a power ground, the first shielding cover is arranged on the front face of the circuit board and forms a first shielding cavity with the circuit board, and the BOSA driving assembly is arranged in the first shielding cavity.

In one embodiment, the device further comprises a second shielding case connected with a power ground, arranged on the back surface of the circuit board and aligned with the first shielding case.

In one embodiment, the WIFI driving device further comprises a third shielding cover connected with a power ground, the third shielding cover is arranged on the front face of the circuit board and forms a second shielding cavity with the circuit board, and the WIFI driving assembly is arranged in the second shielding cavity.

In one embodiment, the device further comprises a fourth shielding case connected with a power ground, arranged on the back surface of the circuit board and aligned with the third shielding case.

In one embodiment, the BOSA driving device further comprises a coiled fiber, a first end of the coiled fiber is connected with the BOSA driving component, and a second end of the coiled fiber penetrates through the first shielding cover.

In one embodiment, the WIFI antenna further comprises a feeder line and an antenna, a first end of the feeder line is connected with the WIFI driving component, a second end of the feeder line penetrates through the third shielding case and is connected with the antenna, the feeder line is arranged on the circuit board, the antenna is arranged in a third area of the circuit board, the third area is located outside the first area and the second area, areas outside the first area, the second area and the third area on the circuit board are fourth areas, the coiled fibers are distributed in the first area and the fourth area, and the feeder line is distributed in the second area, the third area and the fourth area;

and the projection of the coiled fiber in the fourth area and the feeder line have no overlapped line segment.

In one embodiment, the crossing angle between the coiled fiber and the feeder line is 80-100 degrees.

In one embodiment, the crossing angle between the coiled fiber and the feeder line is 90 degrees.

A second aspect of embodiments of the present application provides a PON apparatus, including the antijam circuit according to any one of the second aspects.

Compared with the prior art, the application has the beneficial effects that: the first area provided with the BOSA driving assembly and the second area provided with the WIFI driving assembly are distributed at the two opposite ends of the circuit board, and the isolation belt is arranged between the first area and the second area, so that the BOSA driving assembly and the WIFI driving assembly can have enough distance on the circuit board, and signal mutual interference between the BOSA driving assembly and the WIFI driving assembly is reduced.

Drawings

FIG. 1 is a first exemplary distribution schematic diagram of a immunity circuit provided by an embodiment of the present application;

FIG. 2 is a block diagram of an exemplary anti-jamming circuit provided in an embodiment of the present application;

fig. 3 is a schematic diagram of a second exemplary distribution of the immunity circuit according to an embodiment of the present application.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

Fig. 1 shows a first exemplary schematic block diagram of an anti-jamming circuit provided in an embodiment of the present application, and for convenience of explanation, only the portions related to the embodiment are shown, and detailed below:

the anti-interference circuit comprises a circuit board 100, a BOSA driving component 210 and a WIFI driving component 220, wherein the BOSA driving component 210 is arranged in a first region 110 of the circuit board 100, the WIFI driving component 220 is arranged in a second region 120 of the circuit board 100, the first region 110 and the second region 120 are respectively located at two opposite ends of the circuit board 100 and are separated by an isolation strip 130.

In this embodiment, the first region 110 where the BOSA driving component 210 is located and the second region 120 where the WIFI driving component 220 is located are distributed at two opposite ends of the circuit board 100, and the isolation strip 130 exists between the first region 110 and the second region 120, so that the BOSA driving component 210 and the WIFI driving component 220 can have a sufficient distance on the circuit board 100, and mutual interference of signals between the BOSA driving component 210 and the WIFI driving component 220 is reduced.

The first region 110 and the second region 120 are located at two opposite ends of the circuit board 100, where the second region 120 is located at the right end of the circuit board 100 when the first region 110 is located at the left end of the circuit board 100, and the second region 120 is located at the lower end of the circuit board 100 when the first region 110 is located at the upper end of the circuit board 100; the first region 110 and the second region 120 are separated by the isolation zone 130 means that the first region 110 and the second region 120 are not contiguous and there is another region between the first region 110 and the second region 120.

Referring to fig. 2, in an embodiment, the anti-jamming circuit further includes a first shielding cover 310 connected to the power ground, disposed on the front side of the circuit board 100, and forming a first shielding cavity with the circuit board 100, and the BOSA driving component 210 is disposed in the first shielding cavity.

In this embodiment, the BOSA driving component 210 is disposed in a first shielding cavity formed by the first shielding case 310 and the circuit board 100, and the first shielding case 310 is connected to a power ground, when an interference signal generated by the BOSA driving component 210 during operation is radiated externally, the first shielding case 310 may guide the interference signal to the power ground, the external interference signal may contact the first shielding case 310 before contacting the BOSA driving component 210, and most of the external interference signal may be guided to the power ground under the action of the first shielding case 310, so that the first shielding case 310 may reduce the external effect of the interference signal generated by the BOSA driving component 210 itself on the BOSA driving component 210 and reduce the effect of the external interference signal on the BOSA driving component 210, thereby improving the anti-interference effect on the BOSA driving component 210.

Referring to fig. 2, in one embodiment, the anti-jamming circuit further includes a second shielding cover 320 connected to the power ground, disposed on the back side of the circuit board 100 and aligned with the first shielding cover 310.

In this embodiment, the first shielding cover 310, the second shielding cover 320 and the circuit board 100 form a relatively closed shielding space, so that interference of an interference signal generated by the BOSA driving component 210 by the back of the circuit board 100 is reduced, interference of an external interference signal by the back of the circuit board 100 on the BOSA driving component 210 is reduced, and an anti-interference effect on the BOSA driving component 210 is improved.

Referring to fig. 2, in an embodiment, the anti-interference circuit further includes a third shielding cover 330 connected to the power ground, and disposed on the front side of the circuit board 100 to form a second shielding cavity with the circuit board 100, and the WIFI driving component 220 is disposed in the second shielding cavity.

In this embodiment, the WIFI driving component 220 is disposed in a first shielding cavity formed by the third shielding case 330 and the circuit board 100, and the third shielding case 330 is connected to the power ground, an interference signal generated when the WIFI driving component 220 operates may encounter the third shielding case 330 when radiating to the outside, the third shielding case 330 may guide the interference signal to the power ground, the external interference signal may contact the third shielding case 330 before contacting the WIFI driving component 220, and most of the external interference signal may be guided to the power ground under the action of the third shielding case 330, so that the third shielding case 330 may reduce the external effect of the interference signal generated by the WIFI driving component 220 itself on the WIFI driving component 220 and reduce the effect of the external interference signal on the WIFI driving component 220, and the anti-interference effect on the WIFI driving component 220 is improved.

Referring to fig. 2, in one embodiment, the anti-jamming circuit further includes a fourth shielding cover 340 connected to the power ground, disposed on the back side of the circuit board 100 and aligned with the third shielding cover 330.

In this embodiment, the third shielding cover 330, the fourth shielding cover 340 and the circuit board 100 form a relatively closed shielding space, which reduces the interference caused by the interference signal generated by the WIFI driving component 220 through the back of the circuit board 100, and reduces the interference caused by the external interference signal from the back of the circuit board 100 to the WIFI driving component 220, thereby improving the anti-interference effect on the WIFI driving component 220.

By arranging the first shielding cover 310, the second shielding cover 320, the third shielding cover 330 and the fourth shielding cover 340, the mutual interference of signals between the BOSA driving component 210 and the WIFI driving component 220 can be reduced.

Referring to fig. 2 and fig. 3, in an embodiment, the anti-jamming circuit further includes a coiled fiber 250, a first end of the coiled fiber 250 is connected to the BOSA driving component 210, and a second end of the coiled fiber 250 penetrates through the first shielding cover 310.

In this embodiment, the BOSA driving component 210 is connected to an optical cable of an external device through the coiled fiber 250, so as to implement communication with the external device, the second end of the coiled fiber 250 penetrates through the first shielding cover 310 to be connected to the optical cable of the external device, and the first shielding cover 310 and the coiled fiber 250 form a closed surface, thereby reducing external interference of the BOSA driving component 210 and influence of external interference signals on the BOSA driving component 210.

Referring to fig. 2 and fig. 3, in an embodiment, the anti-jamming circuit further includes a feeding line 240 and an antenna 230, a first end of the feeding line 240 is connected to the WIFI driving component 220, a second end of the feeding line 240 penetrates through the third shielding cover 330 and is connected to the antenna 230, the feeding line 240 is disposed on the circuit board 100, the antenna 230 is disposed on the third area 140 of the circuit board 100, the third area 140 is located outside the first area 110 and the second area 120, an area on the circuit board 100 outside the first area 110, the second area 120, and the third area 140 is a fourth area 150, the coiled fibers 250 are distributed in the first area 110 and the fourth area 150, the feeding line 240 is distributed in the second area 120, the third area 140, and the fourth area 150, and a projection of the coiled fibers 250 on the fourth area 150 does not have an overlapping line segment with the feeding line 240.

In this embodiment, the WIFI driving component 220 is connected to the antenna 230 through the feeder 240 to achieve external wireless signal transmission and external wireless signal acquisition, the feeder 240 is routed in the second region 120, the third region 140, and the fourth region 150 on the circuit board 100, the coiled fiber 250 is routed in the first region 110 and the fourth region 150 above the circuit board 100, wherein there is no overlapping line segment between the projection of the coiled fiber 250 in the fourth region 150 and the feeder 240, so that interference caused by the WIFI driving component 220 when the coiled fiber 250 passes through the upper/lower portion of the WIFI driving component 220, interference caused by the antenna 230 when the coiled fiber 250 passes through the upper/lower portion of the antenna 230, interference caused by the BOSA driving component 210 when the feeder 240 passes through the upper/lower portion of the BOSA driving component 210, and mutual interference caused by the line segment overlapping in the vertical direction between the coiled fiber 250 and the feeder 240 are avoided.

The fact that there is no overlapping line segment between the projection of the coiled fiber 250 in the fourth area 150 and the feeder line 240 means that there are no two points where the projection of the coiled fiber 250 in the fourth area 150 and the feeder line 240 overlap continuously.

In one embodiment, the crossing angle between the coiled fiber 250 and the feeder line 240 is 80-100 degrees.

In the embodiment, the optical fiber 250 intersects with the feeder line 240 at an angle of 80-100 degrees, so that mutual interference of signals caused by the intersection between the optical fiber 250 and the feeder line 240 is reduced.

In one embodiment, the crossing angle of the coiled fiber 250 and the feeder line 240 is 90 degrees.

In the present embodiment, the inspection angle of the optical fiber 250 and the feeder line 240 is 90 degrees, which further reduces the mutual interference of signals caused by the intersection between the optical fiber 250 and the feeder line 240.

The embodiment of the present application further provides a PON device, which includes the anti-interference circuit according to any one of the above embodiments. Since the PON device of this embodiment includes the anti-jamming circuit of any of the above embodiments, the PON device of this embodiment at least has the corresponding advantages of the anti-jamming circuit of any of the above embodiments.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims

1. The utility model provides an anti-jamming circuit, its characterized in that, includes circuit board, BOSA drive assembly and WIFI drive assembly, BOSA drive assembly sets up the first region of circuit board, WIFI drive assembly sets up the second region of circuit board, first region with the second region is located respectively the relative both ends of circuit board to be separated mutually by an median.

2. The immunity circuit of claim 1 further comprising a first shield coupled to a power ground disposed on a front side of said circuit board and forming a first shielded cavity with said circuit board, said BOSA drive assembly being disposed in said first shielded cavity.

3. The immunity circuit of claim 2 further comprising a second shielded enclosure electrically connected to a power ground disposed on a back side of said circuit board and aligned with said first shielded enclosure.

4. The immunity circuit of claim 2, further comprising a third shielded enclosure electrically connected to a power ground, disposed on a front side of said circuit board, forming a second shielded cavity with said circuit board, said WIFI driver component being disposed in said second shielded cavity.

5. The immunity circuit of claim 4 further comprising a fourth shield connected to a power ground disposed on a back side of said circuit board and aligned with said third shield.

6. The immunity circuit of claim 4, further comprising a coiled fiber, a first end of said coiled fiber being coupled to said BOSA driver assembly, a second end of said coiled fiber extending through said first shield.

7. The immunity circuit of claim 6, further comprising a feed line and an antenna, wherein a first end of the feed line is connected to the WIFI driver component, a second end of the feed line extends through the third shield and is connected to the antenna, the feed line is disposed on the circuit board, the antenna is disposed on a third region of the circuit board, the third region is located outside the first region and the second region, a region of the circuit board outside the first region, the second region, and the third region is a fourth region, the fibers are distributed in the first region and the fourth region, and the feed line is distributed in the second region, the third region, and the fourth region;

8. The immunity circuit of claim 7, wherein said fiber optic disks intersect said feed lines at an angle of between 80 degrees and 100 degrees.

9. The immunity circuit of claim 8, wherein said disk fiber intersects said feed line at an angle of 90 degrees.

10. A PON device comprising an anti-jamming circuit as claimed in any one of claims 1 to 9.