A DSFP radio frequency connector

Abstract

The application relates to a DSFP radio frequency connector, which comprises a terminal unit and a shielding piece inserted into the terminal unit. The application reduces the crosstalk between the signals transmitted by the DSFP radio frequency connector through the following modes: the ground terminal of the terminal unit adopts a double-contact structure to contact the circuit board, the shielding piece is arranged between the terminal units and contacts the inner side of the accommodating groove of the circuit board, and the DSFP radio frequency connector is fixed to the printed circuit board through three welding legs of the shielding piece. The DSFP radio frequency connector has good high-speed transmission efficiency, can replace the common radio frequency connector in small base stations, and reduces the cost. In addition, the shielding piece of the DSFP radio frequency connector contacts the inner side of the accommodating groove of the circuit board through a double-contact structure, and the resonance problem caused by single-point contact can be avoided.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and in particular to a DSFP radio frequency connector. Background Technology

[0002] With the widespread adoption of 5G communication, the demand for small base stations is increasing. In small base stations, the hub unit (RHUB) and remote radio unit (pRRU) typically use standard DSFP (Double Small Form-factor Pluggable) connectors to transmit digital or optical signals. Then, in the pRRU, the digital or optical signals are converted into radio frequency (RF) signals for transmission. Therefore, each pRRU requires a chip to convert the digital or optical signals into RF signals. Standard DSFP connectors transmit differential signals with only two signal transmission channels, and crosstalk exists between these signal pairs. Crosstalk is noise on the lines caused by coupling between signal lines, mutual inductance, and mutual capacitance. Excessive crosstalk can cause circuit mis-triggers, leading to data loss and transmission errors, and may even cause the system to malfunction. Summary of the Invention

[0003] One objective of this invention is to provide a DSFP radio frequency connector, which has a simple structure, can transmit four radio frequency signals, and can improve the crosstalk problem between signal pairs. It can replace ordinary radio frequency connectors in small base stations, thereby reducing costs.

[0004] This invention provides a DSFP radio frequency connector, comprising:

[0005] The terminal unit includes an upper terminal group and a lower terminal group, wherein a clamping groove for holding a circuit board is formed between the upper terminal group and the lower terminal group, and both the upper terminal group and the lower terminal group adopt a double-contact structure to contact the circuit board; and

[0006] A shielding component is inserted into the terminal unit. The circuit board is provided with a receiving groove adapted to the shielding component. When the circuit board is inserted into the clamping groove, the shielding component is located in the receiving groove and is in contact with the inner side of the receiving groove of the circuit board.

[0007] In one embodiment of the present invention, the upper terminal group includes a plurality of first grounding terminals, a first signal terminal alternately spaced from the first grounding terminals, and a first fixing member for fixing the first grounding terminals and the first signal terminals.

[0008] In one embodiment of the present invention, the lower terminal group includes a plurality of second grounding terminals, second signal terminals alternately spaced from the second grounding terminals, and a second fixing member for fixing the second grounding terminals and the second signal terminals.

[0009] In one embodiment of the present invention, the first grounding terminal has the same structure as the first signal terminal. The first grounding terminal includes a first end, a second bent arm that is bent vertically from the first end, a third bent arm that is bent vertically from the second bent arm and extends in a direction away from the first end, a fourth bent arm that bends downward from the third bent arm, and a fifth bent arm that bends downward from the fourth bent arm. When the terminal unit is inserted into the circuit board, the fourth bent arm and the fifth bent arm are both in contact with the circuit board, forming a double-contact contact state between the upper terminal group and the circuit board.

[0010] In one embodiment of the present invention, the second grounding terminal has the same structure as the second signal terminal. The second grounding terminal includes a second end with a bending extension direction opposite to that of the first end, a fourth bent arm extending from the second end, a fifth bent arm bending vertically from the fourth bent arm and extending in the same direction as the second end, a sixth bent arm bending upward from the fifth bent arm, and a seventh bent arm bending from the sixth bent arm. When the terminal unit is inserted into the circuit board, both the sixth bent arm and the seventh bent arm are in contact with the circuit board, forming a state of double contact point contact between the lower terminal group and the circuit board.

[0011] In one embodiment of the present invention, the first fixing member includes a lower fixing block connected to the second bent arm and an upper fixing block connected to the third bent arm. Both the lower fixing block and the upper fixing block are provided with openings. The upper terminal group also includes an upper shielding plate and a lower shielding plate. The upper shielding plate is disposed in the opening of the upper fixing block and connected to the third bent arm of two adjacent first grounding terminals. The lower shielding plate is disposed in the opening of the lower fixing block and connected to the second bent arm of two adjacent first grounding terminals. The second fixing member is connected to the fourth bent arm.

[0012] In one embodiment of the present invention, the terminal unit is provided with slots at corresponding positions of the upper fixing block of the first fixing member and the second fixing member, the shielding member is inserted into the slot, and the shielding member adopts a double-contact structure to contact the inner side of the receiving groove of the circuit board. The shielding member also includes three solder feet, and the DSFP RF connector is fixed on the printed circuit board through the three solder feet of the shielding member.

[0013] In one embodiment of the present invention, the shielding member includes a first shielding member and a second shielding member disposed in the gap of the first shielding member. The first shielding member has a U-shaped plate portion and two first solder feet extending from the bottom of the U-shaped plate portion. The slit is formed on the inner side of the U-shaped plate portion, and a first contact portion and a second contact portion for contacting the inner side of the receiving groove of the circuit board are respectively formed on both sides of the U-shaped plate portion. The second shielding member has an L-shaped clamping portion disposed in the gap and a second solder foot extending from the L-shaped clamping portion. The two first solder feet and the second solder foot are the three solder feet of the shielding member.

[0014] In one embodiment of the present invention, the first contact portion is formed by protruding outward from one side of the U-shaped plate portion, the second contact portion is a V-shaped piece formed by protruding outward from the other side of the U-shaped plate portion, and the second shielding member also has a third contact portion formed by protruding outward from the L-shaped clamping portion, the third contact portion being used to form an electrical connection between the first shielding member and the second shielding member.

[0015] In one embodiment of the present invention, the DSFP radio frequency connector further includes a housing for encapsulating the terminal unit and the shielding member. The housing has a front end, a rear end integrally extending from the front end, a socket extending through the front end and the rear end for inserting the circuit board, and a mounting slot adapted to the shielding member. The upper and lower ends of the front end are respectively provided with a plurality of slots adapted to the first ground terminal and the first signal terminal, the second ground terminal, and the second signal terminal of the terminal unit. The terminal unit is encapsulated in the housing with the rear end partially exposed.

[0016] In one embodiment of the present invention, the bottom of the housing is provided with cylindrical legs and prismatic legs.

[0017] This invention improves the crosstalk problem between signal pairs of the DSFP RF connector through a series of structural designs. Specifically, this invention reduces crosstalk between signal pairs transmitted by the DSFP RF connector by using a double-contact structure for the grounding terminal to contact the circuit board, by placing a shield between the terminal units and ensuring that the shield contacts the inside of the receiving slot on the circuit board, and by fixing the DSFP RF connector to the printed circuit board using three solder feet of the shield. This ensures that the DSFP RF connector has good high-speed transmission efficiency and can replace ordinary RF connectors in small base stations, reducing costs. In addition, the double-contact structure of the shield of the DSFP RF connector in this invention, which contacts the inside of the receiving slot on the circuit board, avoids resonance problems caused by single-point contact.

[0018] The further objects and advantages of the invention will become fully apparent from the following description and accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the DSFP radio frequency connector according to a preferred embodiment of the present invention.

[0020] Figure 2 for Figure 1 The diagram shows a three-dimensional structure of the DSFP RF connector from another perspective.

[0021] Figure 3 for Figure 1 The top view of the DSFP RF connector shown.

[0022] Figure 4 for Figure 1 The image shows a bottom view of the DSFP RF connector.

[0023] Figure 5 for Figure 1 The exploded view of the DSFP RF connector is shown.

[0024] Figure 6 for Figure 1 The diagram shows a three-dimensional structural view of the terminal unit of the DSFP RF connector.

[0025] Figure 7 for Figure 1 An exploded view of the terminal unit of the DSFP RF connector shown.

[0026] Figure 8 for Figure 1 The diagram shows a cross-sectional view of the DSFP radio frequency connector.

[0027] Figure 9 for Figure 1 The diagram shows the resonance effect of the shield of the DSFP RF connector, which uses a single-point contact structure to contact the circuit board.

[0028] Figure 10 for Figure 1 The diagram shows the resonance effect of the shield of the DSFP RF connector, which uses a double-point contact structure to contact the circuit board.

[0029] Figure 11 for Figure 1 The diagram shown illustrates the signal transmission effect of the DSFP RF connector, which is fixed to the printed circuit board with only two solder pins.

[0030] Figure 12 for Figure 1 The diagram shown illustrates the signal transmission effect of the DSFP RF connector, which is fixed to a printed circuit board with three solder pins.

[0031] Explanation of icon numbers:

[0032] DSFP RF connector 100;

[0033] Terminal unit 10; upper terminal group 11; first grounding terminal 111; first end 1111; second bent arm 1112; third bent arm 1113; fourth bent arm 1114; fifth bent arm 1115; first signal terminal 112; first fixing member 113; lower fixing block 1131; upper fixing block 1132; opening 1133; upper shielding plate 114; lower shielding plate 115; lower terminal group 12; second grounding terminal 121; second end 1211; fourth bent arm 1212; fifth bent arm 1213; sixth bent arm 1214; seventh bent arm 1215; second signal terminal 122; second fixing member 123; clamping groove 13; slot 14;

[0034] Shielding component 20; First shielding component 21; U-shaped plate portion 210; First contact portion 211; Second contact portion 212; Slit 213; First solder foot 214; Second shielding component 22; L-shaped clamping portion 221; Second solder foot 222; Third contact portion 223;

[0035] Housing 30; front end 31; rear end 32; socket 33; mounting groove 34; slot 35; cylindrical support 36; prismatic support 37. Detailed Implementation

[0036] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0037] Those skilled in the art should understand that, in the disclosure of this invention, the terms "vertical," "horizontal," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting this invention.

[0038] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] like Figures 1 to 8 As shown, the structure of a DSFP radio frequency connector 100 according to the present invention is specifically illustrated.

[0041] Specifically, the DSFP RF connector 100 includes a terminal unit 10 and a shield 20 inserted into the terminal unit 10. The terminal unit 10 includes an upper terminal group 11 and a lower terminal group 12, respectively. A clamping groove 13 for holding a circuit board is formed between the upper terminal group 11 and the lower terminal group 12. Both the upper terminal group 11 and the lower terminal group 12 adopt a double-contact structure to contact the circuit board, so as to reduce crosstalk between signal pairs transmitted by the terminal unit 10. The shield 20 is inserted into the terminal unit 10. The circuit board is provided with a receiving groove adapted to the shield 20. When the circuit board is inserted into the clamping groove 13, the shield 20 is located in the receiving groove and contacts the inner side of the receiving groove of the circuit board, so as to reduce crosstalk between signal pairs transmitted by the terminal unit 10.

[0042] Specifically, such as Figures 5 to 7 As shown, the upper terminal group 11 includes a plurality of first grounding terminals 111, first signal terminals 112 alternately spaced from the first grounding terminals 111, and a first fixing member 113 for fixing the first grounding terminals 111 and the first signal terminals 112.

[0043] More specifically, the first grounding terminal 111 includes a first end 1111, a second bent arm 1112 that bends vertically from the first end 1111, a third bent arm 1113 that bends vertically from the second bent arm 1112 and extends in a direction away from the first end 1111, a fourth bent arm 1114 that bends downward from the third bent arm 1113, and a fifth bent arm 1115 that bends downward from the fourth bent arm 1114. When the circuit board is inserted into the terminal unit 10, both the fourth bent arm 1114 and the fifth bent arm 1115 are in contact with the circuit board, forming a double-contact contact state between the upper terminal group 11 and the circuit board.

[0044] It is worth mentioning that the first signal terminal 112 has the same structure as the first ground terminal 111.

[0045] Further, the first fixing member 113 includes a lower fixing block 1131 connected to the second bent arm 1112 and an upper fixing block 1132 connected to the third bent arm 1113. Both the lower fixing block 1131 and the upper fixing block 1132 are provided with openings 1133. The upper terminal group 11 also includes an upper shielding plate 114 and a lower shielding plate 115. The upper shielding plate 114 is disposed in the opening 1133 of the upper fixing block 1132 and connected to the third bent arm 1113 of two adjacent first grounding terminals 111. The lower shielding plate 115 is disposed in the opening 1133 of the lower fixing block 1131 and connected to the second bent arm 1112 of two adjacent first grounding terminals 111.

[0046] It is worth mentioning that the first fixing member 113 is an insulating plastic part, used to fix the positions of the multiple first grounding terminals 111 and the first signal terminals 112.

[0047] Furthermore, it is worth mentioning that the upper shielding plate 114 and the lower shielding plate 115 are used to connect the first grounding terminals 111 on both sides of the first signal terminal 112 that transmits radio frequency signals, making the transmission return more complete and eliminating resonance generated during signal transmission. In addition, by connecting the first grounding terminals 111 on both sides of the first signal terminal 112 through the upper shielding plate 114 and the lower shielding plate 115, a closed space can be formed to improve crosstalk between different signal terminals.

[0048] Specifically, the lower terminal group 12 includes a plurality of second grounding terminals 121, second signal terminals 122 alternately spaced from the second grounding terminals 121, and a second fixing member 123 for fixing the second grounding terminals 121 and the second signal terminals 122.

[0049] It is worth mentioning that the second fixing component 123 is an insulating plastic block.

[0050] It is understood that by alternating the first ground terminal 111 and the first signal terminal 112, and by alternating the second ground terminal 121 and the second signal terminal 122, electromagnetic interference between two adjacent first signal terminals 112 and two adjacent second signal terminals 122 can be avoided, which helps to improve the crosstalk problem between signal pairs of the DSFP RF connector 100.

[0051] More specifically, the second signal terminal 122 includes a second end 1211 whose bending extension direction is opposite to that of the first end 1111, a fourth bent arm 1212 that bends and extends from the second end 1211, a fifth bent arm 1213 that bends vertically from the fourth bent arm 1212 and extends in the same direction as the second end 1211, a sixth bent arm 1214 that bends upward from the fifth bent arm 1213, and a seventh bent arm 1215 that bends and extends from the sixth bent arm 1214. When the circuit board is inserted into the terminal unit 10, both the sixth bent arm 1214 and the seventh bent arm 1215 are in contact with the circuit board, forming a double contact point contact state between the lower terminal group 12 and the circuit board.

[0052] It is worth mentioning that the first end 1111 and the second end 1211 are used to form a solder connection with the printed circuit board.

[0053] Furthermore, it is worth mentioning that the second grounding terminal 121 has the same structure as the second signal terminal 122. The second fixing member 123 is connected to the fourth bent arm 1212.

[0054] Understandably, the second bending arm 1112 is bent vertically from the first end 1111, which avoids the risk of solder crawling when the first end 1111 is soldered to the printed circuit board. Furthermore, the impedance matching at the bend between the second bending arm 1112 and the first end 1111 improves signal integrity. Simultaneously, the second bending arm 1112 has a longer length to meet the connection requirements of the lower fixing block 1131. The design of the fourth bending arm 1212, which extends from the second end 1211, serves the same purpose.

[0055] It is also understood that the bending extension directions of the fourth bent arm 1114, the fifth bent arm 1115, the sixth bent arm 1214, and the seventh bent arm 1215 are opposite. This allows the upper terminal group 11 to form a double-contact contact with the upper side of the circuit board via the fourth bent arm 1114 and the fifth bent arm 1115 when the circuit board is inserted into the terminal unit 10. The lower terminal group 12 can also form a double-contact contact with the lower side of the circuit board via the sixth bent arm 1214 and the seventh bent arm 1215. This enables the grounding terminal of the DSFP RF connector 100 to contact the circuit board via a double-contact contact method, which helps to improve the crosstalk problem between the signal pairs of the four RF signals.

[0056] Furthermore, the terminal unit 10 is provided with slots 14 at corresponding positions of the upper fixing block 1132 of the first fixing member 113 and the second fixing member 123. The shielding member 20 is inserted into the slot 14, and the shielding member 20 adopts a double-contact structure to contact the inner side of the receiving groove of the circuit board. The shielding member 20 also includes three solder feet. The DSFP RF connector 100 is fixed on the printed circuit board through the three solder feet of the shielding member 20.

[0057] It is understandable that crosstalk between signal pairs can be reduced by adding the shield 20 between the signal pairs and making it contact the inside of the receiving slot of the circuit board. Furthermore, as... Figure 9 As shown, when the shielding component 20 contacts the circuit board using a single-point contact method, a resonance problem will occur, and as... Figure 10 As shown, when the shielding member 20 contacts the circuit board using a two-point contact method, there is clearly no resonance problem. That is to say, the shielding member 20 of the present invention, with its two-contact structure, contacts the inner side of the receiving groove of the circuit board, which can eliminate resonance caused by single-point contact.

[0058] In addition, such as Figure 11 As shown, when the shielding component 20 is fixed to the printed circuit board only by soldering two solder pads, there is a clear crosstalk problem between the signal pairs. Figure 12 As shown, when the shield 20 is soldered and fixed to the printed circuit board via three solder feet, the crosstalk between signal pairs is significantly improved. Therefore, it can be understood that the shield 20 of the present invention, which is fixed to the printed circuit board via three solder feet, can further reduce the crosstalk between signal pairs.

[0059] Specifically, in this embodiment of the present invention, the shielding member 20 includes a first shielding member 21 and a second shielding member 22 disposed in the gap of the first shielding member 21. The first shielding member 21 has a U-shaped plate portion 210 and two first solder feet 214 extending from the bottom of the U-shaped plate portion 210. The slit 213 is formed on the inner side of the U-shaped plate portion 210, and a first contact portion 211 and a second contact portion 212 for contacting the inner side of the receiving groove of the circuit board are formed on both sides of the U-shaped plate portion 210, respectively. The second shielding member 22 has an L-shaped clamping portion 221 disposed in the gap and a second solder foot 222 extending from the L-shaped clamping portion 221. The two first solder feet 214 and the second solder foot 222 are the three solder feet of the shielding member 20.

[0060] It is worth mentioning that the first shielding member 21 is designed with a U-shaped structure (i.e., it is provided with the U-shaped plate portion 210) to contact both sides of the U-shaped receiving groove of the male terminal module PCB (i.e., the circuit board inserted into the terminal unit 10). The purpose of designing the second shielding member 22 with an L-shaped structure is to facilitate contact between the second shielding member 22 and the first shielding member 21 to form a complete circuit, and also to facilitate the second shielding member 22 being fixed in the package housing to prevent rotation that would affect the soldering quality.

[0061] It should be understood that the shielding component 20 can be a one-piece molded part, that is, the first shielding component 21 and the second shielding component 22 can be a one-piece part, or the shielding component 20 can be a split structure as illustrated in this preferred embodiment, which is beneficial to the processing and assembly of the shielding component 20.

[0062] Specifically, the first contact portion 211 is formed by protruding outward from one side of the U-shaped plate portion 210, and the second contact portion 212 is a V-shaped piece formed by extending outward from the other side of the U-shaped plate portion 210. The aforementioned structural design of the first contact portion 211 and the second contact portion 212 can ensure the strength of the shielding member 20. In some embodiments of the present invention, the structures of the first contact portion 211 and the second contact portion 212 may also adopt the same protruding structure or V-shaped piece structure (spring arm structure), and the present invention does not limit this.

[0063] Specifically, the second shielding member 22 also has a third contact portion 223 formed by the L-shaped clamping portion 221 extending outward, the third contact portion 223 being used to form an electrical connection between the first shielding member 21 and the second shielding member 22.

[0064] It is worth mentioning that both the first shielding component 21 and the second shielding component 22 are metal shielding components, that is, they are made of metal.

[0065] Furthermore, the DSFP RF connector 100 also includes a housing 30 for encapsulating the terminal unit 10 and the shield 20. The housing 30 has a front end portion 31, a rear end portion 32 integrally extending from the front end portion 31, a socket 33 penetrating the front end portion 31 and the rear end portion 32 for inserting the circuit board, and a mounting groove 34 adapted to the shield 20. The upper and lower ends of the front end portion 31 are respectively provided with a plurality of slots 35 adapted to the first ground terminal 111 and the first signal terminal 112, the second ground terminal 121, and the second signal terminal 122 of the terminal unit 10. The terminal unit 10 is encapsulated in the housing 30 with the rear end portion 32 partially exposed.

[0066] It is worth mentioning that the housing 30 is an insulating housing 30, and the bottom of the housing 30 is provided with cylindrical support feet 36 and prismatic support feet 37, which facilitates the placement of the DSFP RF connector 100 on the printed circuit board and prevents the DSFP RF connector 100 from rotating.

[0067] It is understood that the DSFP RF connector 100 of the present invention can directly transmit four RF signals. If the DSFP RF connector 100 is used to directly transmit RF signals between the hub unit and the remote RF unit, only a signal conversion chip needs to be installed in the hub unit. The structural design of the DSFP RF connector 100 of the present invention simplifies the structure of the remote RF unit, reduces costs, and is beneficial for multi-point deployment of small base stations. Moreover, the DSFP RF connector 100 of the present invention can transmit four RF signals, providing more signal transmission channels, and can replace ordinary RF connectors in small base stations, reducing costs.

[0068] It is also understood that the DSFP radio frequency connector 100 can be used in the fields of communication, routing, data transmission, switching, wireless base stations, etc., and the present invention does not limit the specific application of the DSFP radio frequency connector 100.

[0069] In summary, this invention improves the crosstalk problem between signal pairs of the DSFP RF connector 100 through a series of structural designs. Specifically, this invention reduces crosstalk between signal pairs transmitted by the DSFP RF connector 100 by using a double-contact structure for the grounding terminal of the DSFP RF connector 100 to contact the circuit board, by placing the shield 20 between the terminal units 10 and making the shield 20 contact the inner side of the receiving groove of the circuit board, and by fixing the DSFP RF connector 100 to the printed circuit board using the three solder pins of the shield 20. This ensures that the DSFP RF connector 100 has good high-speed transmission efficiency and can replace ordinary RF connectors in small base stations, reducing costs. In addition, the double-contact structure of the shield 20 of the DSFP RF connector 100 in this invention, which contacts the inner side of the receiving groove of the circuit board, can avoid resonance problems caused by single-point contact.

[0070] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The above embodiments merely illustrate preferred implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention should be determined by the appended claims.

Claims

1. A DSFP radio frequency connector, characterized in that, include: The terminal unit includes an upper terminal group and a lower terminal group, wherein a clamping groove for holding a circuit board is formed between the upper terminal group and the lower terminal group, and both the upper terminal group and the lower terminal group adopt a double-contact structure to contact the circuit board; and A shielding component is inserted into the terminal unit. The circuit board has a receiving groove adapted to the shielding component. When the circuit board is inserted into the clamping groove, the shielding component is located within the receiving groove and contacts the inner side of the receiving groove of the circuit board; wherein: The shielding component includes a first shielding component and a second shielding component disposed in the gap of the first shielding component. The first shielding component has a U-shaped plate portion and two first solder feet extending from the bottom of the U-shaped plate portion. A slit is formed on the inner side of the U-shaped plate portion, and a first contact portion and a second contact portion are respectively formed on both sides of the U-shaped plate portion for contacting the inner side of the receiving groove of the circuit board. The second shielding component has an L-shaped clamping portion disposed in the gap and a second solder foot extending from the L-shaped clamping portion. The two first solder feet and the second solder foot constitute the three solder feet of the shielding component.

2. The DSFP radio frequency connector according to claim 1, characterized in that, The upper terminal group includes a plurality of first grounding terminals, first signal terminals alternately spaced from the first grounding terminals, and a first fixing member for fixing the first grounding terminals and the first signal terminals.

3. The DSFP radio frequency connector according to claim 2, characterized in that, The lower terminal group includes a plurality of second grounding terminals, second signal terminals that are alternately spaced from the second grounding terminals, and a second fixing member for fixing the second grounding terminals and the second signal terminals.

4. The DSFP radio frequency connector according to claim 3, characterized in that, The first grounding terminal has the same structure as the first signal terminal. The first grounding terminal includes a first end, a second bent arm that is bent vertically from the first end, a third bent arm that is bent vertically from the second bent arm and extends away from the first end, a fourth bent arm that bends downward from the third bent arm, and a fifth bent arm that bends downward from the fourth bent arm. When the circuit board is inserted into the terminal unit, the fourth bent arm and the fifth bent arm are both in contact with the circuit board, forming a double-contact contact state between the upper terminal group and the circuit board.

5. The DSFP radio frequency connector according to claim 4, characterized in that, The second grounding terminal has the same structure as the second signal terminal. The second grounding terminal includes a second end with a bending extension direction opposite to that of the first end, a fourth bent arm extending from the second end, a fifth bent arm bending vertically from the fourth bent arm and extending in the same direction as the second end, a sixth bent arm bending upward from the fifth bent arm, and a seventh bent arm bending from the sixth bent arm. When the terminal unit is inserted into the circuit board, both the sixth bent arm and the seventh bent arm are in contact with the circuit board, forming a double contact point contact state between the lower terminal group and the circuit board.

6. The DSFP radio frequency connector according to claim 5, characterized in that, The first fixing member includes a lower fixing block connected to the second bent arm and an upper fixing block connected to the third bent arm. Both the lower fixing block and the upper fixing block are provided with openings. The upper terminal group also includes an upper shielding plate and a lower shielding plate. The upper shielding plate is disposed in the opening of the upper fixing block and connected to the third bent arm of two adjacent first grounding terminals. The lower shielding plate is disposed in the opening of the lower fixing block and connected to the second bent arm of two adjacent first grounding terminals. The second fixing member is connected to the fourth bent arm.

7. The DSFP radio frequency connector according to claim 6, characterized in that, The terminal unit has slots at corresponding positions of the upper fixing block of the first fixing member and the second fixing member. The shielding member is inserted into the slot and has a double-contact structure that contacts the inner side of the receiving groove of the circuit board. The shielding member also includes three solder feet. The DSFP RF connector is fixed to the printed circuit board through the three solder feet of the shielding member.

8. The DSFP radio frequency connector according to claim 7, characterized in that, The first contact portion is formed by protruding outward from one side of the U-shaped plate portion, the second contact portion is a V-shaped piece formed by protruding outward from the other side of the U-shaped plate portion, and the second shielding member also has a third contact portion formed by protruding outward from the L-shaped clamping portion, the third contact portion being used to form an electrical connection between the first shielding member and the second shielding member.

9. The DSFP radio frequency connector according to any one of claims 3 to 6, characterized in that, The DSFP RF connector further includes a housing for encapsulating the terminal unit and the shielding component. The housing has a front end, a rear end integrally extending from the front end, a socket extending through the front end and the rear end for inserting the circuit board, and a mounting slot adapted to the shielding component. The upper and lower ends of the front end are respectively provided with a plurality of slots adapted to the first ground terminal and the first signal terminal, the second ground terminal, and the second signal terminal of the terminal unit. The terminal unit is encapsulated in the housing with part of it exposed at the rear end. The bottom of the housing is provided with cylindrical feet and prismatic feet.

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