High-frequency signal adapter plate

Abstract

The invention belongs to the technical field of high-frequency signal transfer, and particularly discloses a high-frequency signal transfer board which comprises a transfer circuit board and a connecting piece, and the connecting piece is further provided with a slot used for fixing a high-frequency connector. The switching circuit board is provided with a plurality of photosensitive board contact points, a plug hole and a high-frequency signal transmission microstrip line, the photosensitive board contact points are connected with a joint of the photosensitive board, a pin is arranged in the plug hole and used for connecting the high-frequency connector and the high-frequency signal transmission microstrip line, the other end of the high-frequency signal transmission microstrip line is connected with the photosensitive board contact points, and the other end of the high-frequency signal transmission microstrip line is connected with the photosensitive board contact points. The bottom of the pin is clamped with the high-frequency connector, and the side wall of the pin is in interference fit with the plugging hole. According to the invention, the switching circuit board is fixedly connected with the connecting piece, and the plugging hole with the circular truncated cone structure is formed in the switching circuit board, so that reliable connection between the pin and the plugging hole is ensured, and as the high-frequency signal transmission microstrip line is connected with the high-frequency connector in a plugging manner, echo is avoided, and the signal switching precision is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of high-frequency signal switching, and in particular relates to a high-frequency signal switching board. Background Art

[0002] The high-frequency signal transfer circuit board is an important transfer part of the photosensitive circuit. Through integrated design, it realizes functions such as signal transmission. In order to ensure the reliability of signal transmission, the structure is designed as a double-layer structure, with the upper layer being the signal transmission circuit and the lower layer being the insulating isolation liner. The high-frequency connector is connected to the signal transfer board through the insulating liner. After the signal passes through the transfer board, it is connected to the photosensitive circuit, and finally the signal transmission is completed.

[0003] During high-frequency signal transfer and transmission, the transfer circuit board and the high-frequency connector need to be connected. Usually, welding is used to connect the high-frequency connector and the transfer board. This solution can achieve reliable connection, but the amount of tin at the solder joint is difficult to accurately control and it is easy to generate echoes. The signal transmission can only be achieved by repeatedly adjusting the amount of tin. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects in the prior art and provide a high-frequency signal adapter board.

[0005] The present invention provides a high-frequency signal adapter board, comprising an adapter circuit board and a connector, wherein the adapter circuit board is fixedly arranged on the connector, a light inlet channel for passing light is arranged on the connector, and a photosensitive board is arranged on the top of the light inlet channel; the connector is also provided with a slot for fixing a high-frequency connector;

[0006] The adapter circuit board is provided with a plurality of photosensitive board contact points, a plug hole and a high-frequency signal transmission microstrip line. The photosensitive board contact point is connected to the connector of the photosensitive board. A plug pin is provided inside the plug hole for connecting the high-frequency connector and the high-frequency signal transmission microstrip line. The other end of the high-frequency signal transmission microstrip line is connected to the photosensitive board contact point. The bottom of the plug pin is engaged with the high-frequency connector, and the side wall of the plug pin is interference fit with the plug hole.

[0007] The number of contact points, plug holes, and high-frequency signal transmission microstrip lines of the photosensitive board is the same as the number of joints of the high-frequency connector and the photosensitive board;

[0008] The plug-in hole is a truncated cone structure, and the hole diameter gradually decreases from the top to the bottom of the adapter circuit board.

[0009] A further solution is that an insulating plate with the same shape as the adapter circuit board is also provided at the bottom of the adapter circuit board, and mounting holes are provided on the adapter circuit board and the insulating plate. Screws are provided inside the mounting holes for fixing the adapter circuit board and the insulating plate to the connecting piece.

[0010] A further solution is that through holes are opened in the center of the adapter circuit board and the insulating board, and six groups of high-frequency signal transmission microstrip lines are symmetrically arranged on both sides of the through holes, one end of each group of the high-frequency signal transmission microstrip lines is connected to the high-frequency connector through a pin, and the other end of each group of the high-frequency signal transmission microstrip lines is respectively connected to the contact points of the photosensitive board.

[0011] A further solution is that the lengths of each group of high-frequency signal transmission microstrip lines are equal.

[0012] A further solution is that a sunken installation plane is provided on the top of the connecting member, and the installation plane is adapted to the adapter circuit board so that the adapter circuit board and the photosensitive board are coplanar.

[0013] A further solution is to open a reserved hole at the contact point of the photosensitive board, and to arrange a probe inside the reserved hole to strengthen the contact between the high-frequency signal transmission microstrip line and the photosensitive board.

[0014] A further solution is that the diameter of the plug hole gradually changes from 1.5 mm to 1.2 mm.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention fixedly connects the adapter circuit board with the connector, and opens a plug hole with a truncated cone structure on the adapter circuit board, thereby ensuring reliable connection between the plug pin and the plug hole. Since the high-frequency signal transmission microstrip line and the high-frequency connector are connected in the form of plugging, echo is avoided and the accuracy of signal transfer is improved.

[0017] The high-frequency signal transmission microstrip line of the present invention adopts an equal-length design to realize synchronous transmission of photosensitive signals and further improve the transmission accuracy of photosensitive signals. A reserved hole is opened at the contact point of the photosensitive board, and a probe is arranged inside the reserved hole to improve the reliable contact between the high-frequency signal transmission microstrip line and the photosensitive board while ensuring impedance continuity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following drawings are only used to illustrate and explain the present invention, and are not intended to limit the scope of the present invention, wherein:

[0019] Figure 1 : Schematic diagram of the structure of the present invention;

[0020] Figure 2 : Schematic diagram of the transfer circuit board structure;

[0021] Figure 3 : Schematic diagram of the location of the insulation board;

[0022] Figure 4 : Exploded view of the structure of the present invention;

[0023] Figure 5 : Connector cross-section;

[0024] In the figure: 1. Connector; 2. Adapter circuit board; 3. Mounting hole; 4. Plug hole; 5. Microstrip line for high-frequency signal transmission; 6. Photosensitive board; 7. Insulating board; 8. Pin; 9. Contact point of photosensitive board; 10. Light inlet channel; 11. High-frequency connector. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution, design method and advantages of the present invention clearer, the present invention is further described in detail by specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] like Figure 1 , Figure 4 and Figure 5 As shown, the present invention provides a high-frequency signal adapter board, including an adapter circuit board 2 and a connector 1, wherein the adapter circuit board 2 is fixedly arranged on the connector 1, and a light inlet channel 10 for passing light is arranged on the connector 1, and a photosensitive board 6 is arranged on the top of the light inlet channel 10; the connector 1 is also provided with a slot for fixing a high-frequency connector 11; a plurality of groups of photosensitive board contact points 9, plug holes 4 and high-frequency signal transmission microstrip lines 5 are arranged on the adapter circuit board 2, and the photosensitive board contact points 9 are connected to the connectors of the photosensitive board 6, so that The position of the plug hole 4 is adapted to the position of the high-frequency connector 11. A plug pin 8 is provided inside the plug hole 4 for connecting the high-frequency connector 11 and the high-frequency signal transmission microstrip line 5. The other end of the high-frequency signal transmission microstrip line 5 is connected to the photosensitive board contact point 9. The bottom of the plug pin 8 is engaged with the high-frequency connector 11, and the side wall of the plug pin 8 is interference fit with the plug hole 4. The number of the photosensitive board contact point 9, the plug hole 4, and the high-frequency signal transmission microstrip line 5 is the same as the number of joints between the high-frequency connector 11 and the photosensitive board 6. Figure 2 As shown, the plug-in hole 4 is a truncated cone structure, and the aperture gradually decreases from the top to the bottom of the adapter circuit board 2. Specifically, the aperture of the plug-in hole 4 gradually changes from 1.5 mm to 1.2 mm. The plug pin 8 generally includes a needle head and an insulating needle body outside the needle head. In this embodiment, the diameter of the needle body is 1.3 mm. When the plug pin 8 is inserted into the plug-in hole 4, the needle head passes through the plug-in hole 4 and is connected to the high-frequency connector 11 located at the bottom of the plug-in hole 4, and the needle body and the plug-in hole 4 are interference fit.

[0027] like Figure 3As shown, an insulating plate 7 of the same shape as the adapter circuit board 2 is also provided at the bottom of the adapter circuit board 2. The adapter circuit board 2 and the insulating plate 7 are both provided with mounting holes 3. Screws are provided inside the mounting holes 3 for fixing the adapter circuit board 2 and the insulating plate 7 on the connector 1. The insulating plate 7 is provided to effectively prevent the circuit board from contacting other conductive objects and avoid short circuits due to accidental contact. Through holes are provided in the center of the adapter circuit board 2 and the insulating plate 7. Six groups of high-frequency signal transmission microstrip lines 5 are symmetrically provided on both sides of the through holes. One end of each group of the high-frequency signal transmission microstrip lines 5 is connected to the high-frequency connector 11 through a pin 8, and the other end of each group of the high-frequency signal transmission microstrip lines 5 is respectively connected to the photosensitive board contact point 9. The length of each group of the high-frequency signal transmission microstrip lines 5 is equal, so that the synchronous transmission of the photosensitive signal is realized, and the transmission accuracy of the photosensitive signal is further improved.

[0028] Continue to refer to Figure 4 A sunken mounting plane is provided on the top of the connector 1, and the mounting plane is adapted to the adapter circuit board 2, so that the adapter circuit board 2 and the photosensitive board 6 are coplanar, ensuring reliable connection between the adapter circuit board 2 and the photosensitive board 6. A reserved hole is provided at the contact point 9 of the photosensitive board, and a probe is provided inside the reserved hole to reinforce the contact between the high-frequency signal transmission microstrip line 5 and the photosensitive board 6.

[0029] The present invention uses an external optical signal to irradiate the photosensitive plate 6 through the light input channel 10. The electrons in the photosensitive plate 6 absorb the photon energy, thereby changing its electrical state. The signal is transmitted to the high-frequency connector 11 through the high-frequency signal transmission microstrip line 5 to realize the conversion between the optical signal and the high-frequency signal. In this process, the high-frequency signal transmission microstrip line 5 and the high-frequency connector 11 are connected by pin plugging, which avoids the echo phenomenon caused by welding and improves the accuracy of high-frequency signal transfer.

[0030] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A high-frequency signal adapter board, comprising an adapter circuit board (2) and a connector (1), wherein the adapter circuit board (2) is fixedly arranged on the connector (1), characterized in that: The connecting member (1) is provided with a light inlet channel (10) for passing light, and a photosensitive plate (6) is provided on the top of the light inlet channel (10); the connecting member (1) is also provided with a slot for fixing a high-frequency connector (11); The adapter circuit board (2) is provided with a plurality of photosensitive board contact points (9), a plug hole (4) and a high-frequency signal transmission microstrip line (5); the photosensitive board contact point (9) is connected to the connector of the photosensitive board (6); a plug pin (8) is provided inside the plug hole (4) for connecting the high-frequency connector (11) and the high-frequency signal transmission microstrip line (5); the other end of the high-frequency signal transmission microstrip line (5) is connected to the photosensitive board contact point (9); the bottom of the plug pin (8) is engaged with the high-frequency connector (11); and the side wall of the plug pin (8) is interference-fitted with the plug hole (4); The number of the photosensitive board contact points (9), the plug holes (4), and the high-frequency signal transmission microstrip lines (5) is the same as the number of the joints between the high-frequency connector (11) and the photosensitive board (6); The plug-in hole (4) is a truncated cone structure, and the hole diameter gradually decreases from the top to the bottom of the adapter circuit board (2).

2. A high-frequency signal adapter board according to claim 1, characterized in that: An insulating plate (7) having the same shape as the adapter circuit board (2) is also provided at the bottom of the adapter circuit board (2); mounting holes (3) are provided on the adapter circuit board (2) and the insulating plate (7); screws are provided inside the mounting holes (3) for fixing the adapter circuit board (2) and the insulating plate (7) on the connecting member (1).

3. A high-frequency signal adapter board according to claim 2, characterized in that: The centers of the adapter circuit board (2) and the insulating board (7) are both provided with through holes, and six groups of high-frequency signal transmission microstrip lines (5) are symmetrically arranged on both sides of the through holes, one end of each group of the high-frequency signal transmission microstrip lines (5) is connected to the high-frequency connector (11) via a plug pin (8), and the other end of each group of the high-frequency signal transmission microstrip lines (5) is respectively connected to a photosensitive board contact point (9).

4. A high-frequency signal adapter board according to claim 3, characterized in that: The lengths of each group of high-frequency signal transmission microstrip lines (5) are equal.

5. A high-frequency signal adapter board according to claim 4, characterized in that: The top of the connecting member (1) is provided with a sunken mounting plane, and the mounting plane is adapted to the adapter circuit board (2) so that the adapter circuit board (2) and the photosensitive board (6) are coplanar.

6. The high-frequency signal adapter board according to claim 1, characterized in that: A reserved hole is provided at the contact point (9) of the photosensitive board, and a probe is arranged inside the reserved hole to strengthen the contact between the high-frequency signal transmission microstrip line (5) and the photosensitive board (6).

7. A high-frequency signal adapter board according to claim 1, characterized in that: The diameter of the plug hole (4) gradually changes from 1.5 mm to 1.2 mm.

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