KR20200143205A - Coaxial cable male connector for transmitting super high frequency signal - Google Patents

Abstract

The present invention relates to a coaxial cable male connector for transmitting an ultra high frequency signal so as to be applied to a coaxial cable connector for transmitting an ultra high frequency signal. The coaxial cable male connector for transmitting the ultra high frequency signal, which is accommodated in a connector socket installed on a printed circuit board (PCB) to connect a plurality of coaxial cables to the printed circuit board (PCB), includes: a single or multiple coaxial cables wherein an outer sheath, an outer conductor, and a dielectric of each coaxial cable are peeled off exposing an inner conductor of a predetermined length, and a terminal of the exposed inner conductor electrically comes in direct contact with a signal line terminal pad formed on the PCB; and a shielding can for accommodating the exposed inner conductors of the single or multiple coaxial cables, fixing and protecting the ends of the inner conductors of the exposed coaxial cable, and shielding electromagnetic waves generated through the inner conductors of the multiple coaxial cables, wherein the inner conductor terminals of the coaxial cable coming in direct contact with the signal line terminal pad formed on the PCB are formed on the bottom of the shielding can. According to the present invention, the signal line (terminal) of the coaxial cable multi connector comes in direct contact with the printed circuit board, so that a leakage current is minimized to reduce signal loss, and a fastening height is minimized to facilitate miniaturization.

Description

Coaxial cable male connector for transmitting super high frequency signal

The present invention relates to a connector, in particular, a male connector of a PCB multi-connector in which an inner conductor of a coaxial cable, which is a signal line, is directly connected to a circuit signal line pad of a printed circuit board, a coaxial cable male connector for transmission of ultra-high frequency signals. It is about.

1 is a cross-sectional view of a conventional PCB single or multi-connector. In the conventional PCB single or multi-connector, the male connector 110 is formed by covering the terminal of the electrical signal line 114 for transmitting electrical signals such as cables, wires, etc. by a male connector housing 112. ) Is inserted into and connected to a female connector (or socket, 150) mounted on the PCB 160. At this time, the female connector housing 152 of the female connector 150 is provided with a receiving member 154 in which terminals or pins of the male connector are accommodated. Leakage current and noise are generated through the receiving member 154, resulting in signal loss, and miniaturization of the connector is also limited.

The problem to be solved by the present invention was created to solve the problems and limitations of the conventional single or multi-connector described above, and only a housing socket accommodating only a male connector housing is installed on the PCB in the female connector. The inner conductor of a coaxial cable, which is a single or multiple ultra-high frequency signal lines in a PCB multi-connector in which the coaxial cable terminals of the male connector directly contact the terminal pads of the PCB without a terminal receiving member for accommodating the coaxial cable terminals of the male connector. It is to provide a coaxial cable male connector for ultra-high frequency signal transmission, which can achieve miniaturization by minimizing signal loss by directly contacting the circuit signal line pads of the PCB and reducing the height of the connector significantly.

The coaxial cable male connector for transmission of ultra-high frequency signals according to the present invention for achieving the above technical problem is accommodated in a connector socket installed on a printed circuit board (PCB) to provide a single or multiple coaxial cables and a printed circuit board (PCB). In the male connector of a coaxial cable for transmitting ultra-high frequency signals to be connected, the outer conductor and the dielectric of each coaxial cable are stripped to expose an inner conductor of a predetermined length, and a terminal of the exposed inner conductor is a signal line formed on the PCB. A single or a plurality of coaxial cables in electrical contact with the terminal pads; And a shielding can that accommodates the exposed inner conductors of the single or plurality of coaxial cables, fixes and protects the exposed inner conductor ends of the coaxial cable, and shields electromagnetic waves generated through the inner conductors of the plurality of coaxial cables ( shielding can), and internal conductor terminals of a coaxial cable in electrical contact with a signal line terminal pad formed on the PCB are formed on the bottom of the shielding can. The shielding can is connected to the outer conductors of the coaxial cable, and has an inner conductor receiving portion for receiving the exposed inner conductor of each coaxial cable, and the inner conductor receiving portion accommodates the exposed inner conductors, each coaxial cable The exposed inner conductor of is combined with the inner conductor receiving part, and the combined coaxial cable multi-connector is combined with the adapter receiving part to provide electrical shielding when seated on the PCB.

The male connector for a coaxial cable for transmission of ultra-high frequency signals according to the present invention includes, at one end, an exposed inner conductor of the coaxial cable so that the inner conductor terminal of the coaxial cable easily contacts the signal line terminal pad formed on the PCB. It is connected and the other end further comprises an adapter connected to the circuit signal line terminal pad formed on the PCB, through the adapter, the inner terminal of the coaxial cable is connected to the circuit signal line terminal pad formed on the PCB. The shielding can has an adapter receiving portion corresponding to each of the exposed inner conductors of a plurality of coaxial cables to accommodate a plurality of adapters connected to each other, and the adapter receiving portion accommodates the plurality of adapters, but has a shape that can be shielded for each adapter. Done. The shielding can may further include a lower shielding member located under the shielding can and accommodating the exposed inner conductors of the coaxial cables, the exposed inner conductor ends thereof; An upper shielding member covering exposed inner conductors of coaxial cables accommodated in the lower shielding member; It is located in front of the shielding can, and includes a front shielding member for shielding the exposed inner conductors of the coaxial cable by combining with the lower shielding member and the upper shielding member. The shielding can includes a first shielding member positioned below the shielding can, accommodating the exposed inner conductors of the coaxial cables, and having ends of the exposed inner conductors of the coaxial cable positioned; And a second shielding member coupled to the first shielding member to shield the exposed inner conductors of the coaxial cable. The shielding can is a shielding member in which the upper, lower, and front surfaces of the shielding can are integrally formed, shields the exposed inner conductors of the coaxial cable, and ends of the exposed inner conductors of the coaxial cable are located on the bottom surface. It is characterized.

According to the coaxial cable male connector for transmission of ultra-high frequency signals according to the present invention, the coaxial cable multi-connector according to the present invention corresponding to the male connector is in a connector socket without a receiving member for receiving the inner conductor terminal of the coaxial cable. Leakage current by adding an adapter that facilitates contact of the signal line terminal of the coaxial cable multi-connector with the signal line terminal pad of the printed circuit board or the signal line terminal of the coaxial cable multi-connector with the circuit signal line terminal pad of the PCB by being inserted and fastened. Signal loss can be reduced by minimizing and miniaturization can be achieved by minimizing the connection height of the connector.

In addition, the outer conductor, which is the shielding layer of the coaxial cable connected to the male connector, and the shielding can for electromagnetic shielding the inner conductor are connected, and the connector socket mounted on the PCB and connected to the ground can accommodate the shielding can of the coaxial cable multi-connector. It is possible to reduce the signal loss of the signal terminal of the coaxial cable multi-connector according to the present invention, which corresponds to the male connector in direct contact with the PCB circuit signal line terminal pad by electrically connecting it through the connection.

1 is a side cross-sectional view of a conventional PCB multi-connector.
2 is an example of a coaxial cable connector for transmitting an ultra-high frequency signal to which the present invention is applied, showing a state before the coaxial cable male connector for transmitting an ultra-high frequency signal according to the present invention and a connector socket mounted on a PCB are fastened. .
3 is an example of a coaxial cable connector for transmitting an ultra-high frequency signal to which the present invention is applied, and shows a state after the coaxial cable male connector for transmitting an ultra-high frequency signal according to the present invention and a connector socket mounted on a PCB are fastened. .
4 is a bottom perspective view of a male connector and a connector socket for a coaxial cable for transmitting an ultra-high frequency signal according to the present invention, as viewed from the bottom.
5 is an exploded perspective view of an example of a connector socket of a coaxial cable connector for transmitting an ultra-high frequency signal to which the present invention is applied.
6 shows an example of a plurality of coaxial cables connected to a male connector of a coaxial cable for transmitting an ultra-high frequency signal according to the present invention.
7 shows an example of elements constituting a male connector for a coaxial cable for transmitting an ultra-high frequency signal according to the present invention.
8 is a cross-sectional view taken along line VII-VII of the coaxial cable male connector for transmission of ultra-high frequency signals according to the present invention shown in FIG. 2.
9 is a cross-sectional view taken along line VIII-VIII of the coaxial cable male connector for transmission of ultra-high frequency signals according to the present invention shown in FIG. 2.
FIG. 10 shows a process of assembling a first embodiment in which a shielding can of a male connector for a coaxial cable for transmitting an ultra-high frequency signal according to the present invention is composed of three parts.
11 shows a process of assembling a second embodiment in which a shielding can of a male connector for a coaxial cable for transmitting an ultra-high frequency signal according to the present invention is composed of two parts.
12 shows a process of assembling a third embodiment in which a shielding can of a male connector for a coaxial cable for transmitting an ultra-high frequency signal according to the present invention is formed in one piece.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Since the embodiments described in the present specification and the configurations shown in the drawings are only preferred embodiments of the present invention, and do not represent all the technical spirit of the present invention, various equivalents that can replace them at the time of the present application And it should be understood that there may be variations.

The coaxial cable connector for transmission of ultra-high frequency signals to which the present invention is applied is a PCB connector that connects a plurality of coaxial cable inner conductors for transmitting electrical signals and a printed circuit board (PCB), and includes a male connector and a connector socket. .

2 is an example of a coaxial cable connector for transmitting an ultra-high frequency signal to which the present invention is applied, and a connector socket 225 mounted on a coaxial cable male connector 20 and a PCB 215 for transmitting an ultra-high frequency signal according to the present invention. It shows the state before) is fastened. 3 is an example of a coaxial cable connector for transmitting an ultra-high frequency signal to which the present invention is applied, and a connector socket 225 mounted on a coaxial cable male connector 20 and a PCB 215 for transmitting an ultra-high frequency signal according to the present invention. ) Shows the state after being fastened. 2 and 3, the housings 270, 280, and 290 of the coaxial cable multi-connector connected to the coaxial cable 240 are inserted into the connector socket 225 mounted on the PCB 125 to be fastened. At this time, the connection between the circuit signal line terminal of the PCB 215 and the inner conductor of the coaxial cable 240 is a coaxial cable inner conductor terminal formed on the bottom of the coaxial cable inner connector according to the present invention and a circuit signal line terminal formed on the PCB 215 It is achieved by direct contact of the pad.

Figure 4 is a bottom perspective view of the coaxial cable male connector 20 and the connector socket 225 for ultra-high frequency signal transmission according to the present invention as viewed from the bottom. 5 is an exploded perspective view of an example of a coaxial cable connector for transmitting an ultra-high frequency signal and a connector socket 225 mounted on the PCB 215 to which the present invention is applied. 4 and 5, a signal line terminal 255 of a cable is formed on the bottom of the male connector 20. The connector socket 225 may have a fastening portion 222 that is fastened to the male connector 20 of a coaxial cable , and is surface mounted on the surface of the printed circuit board (PCB, 215). mount devices) or through the PCB through SIP (single in-line package), DIP (dual in-line package), QIP (quad in-line package), etc., and the PCB surface mounting method and penetration method Can be installed by mixing. In addition, the connector socket 225 may be formed integrally with a PCB rather than a separate component.

When the housings (270, 280, 290) of the coaxial cable male connector 20 for ultra-high frequency signal transmission are inserted into the connector socket 225 mounted on the PCB 215 and fastened, the cable signal line terminal 255 is coaxial. The cable signal line terminal 255 is in direct contact with the terminal pad 214 of the circuit signal line formed on the PCB 215 without passing through the accommodating member. As shown in FIG. 4, the connector socket 225 mounted on the PCB 215 has been simplified by removing the receiving member accommodating the cable signal line terminal 255, and furthermore, ultra-high frequency corresponding to the male connector. It can be downsized by minimizing the height of the connection with the signal transmission coaxial cable male connector 20. The coaxial cable connector for ultra-high frequency signal transmission to which the present invention is applied can connect electrical signals including RF signals, power, etc. to signals or power of the PCB, and table PCs, laptop PCs, 5G smartphones, home appliances (TV, refrigerator, etc.) It can be applied to various electronic devices that require miniaturization, such as household appliances such as washing machines).

The coaxial cable male connector for transmitting ultra-high frequency signals according to the present invention is accommodated in a connector socket installed on a printed circuit board (PCB) to connect a plurality of coaxial cables and circuit signal lines of the printed circuit board (PCB), and a plurality of coaxial cables It comprises a cable 240 and a shielding can (shielding, 270, 280, 290). 6 shows an example of a coaxial cable 30 connected to the male connector 20 of a coaxial cable for transmitting an ultra-high frequency signal according to the present invention. For each coaxial cable constituting the plurality of coaxial cables, the outer shell 240, the outer conductor 230, and the dielectric 220 are peeled off by different lengths to expose the inner conductor 210 of a predetermined length, and the exposed inner conductor The terminal of 210 is in direct contact with the signal line terminal pad 214 formed on the PCB 215. That is, as shown in FIGS. 4 and 5, coaxial cable inner conductor terminals 255 in direct contact with the signal line terminal pads 314 formed on the PCB 215 are formed on the bottom of the lower shielding member 270.

6, the coaxial cable 30 is an inner conductor 210 used as a signal line, shields electromagnetic waves of the inner conductor 210, and an outer conductor 230 made of aluminum, copper, etc., an inner conductor It consists of a dielectric 220 that insulates and separates the outer conductor 230 from 210 and an outer jacket (jacket) that protects the outer conductor 230. The inner conductor 210 can be used from DC to microwave and millimeter waves, and can transmit ultra-high frequency signals of about 50 GHz or more. The connector socket is installed on the printed circuit board (PCB), accommodates a shielding can, which is a housing of the coaxial cable multi-connector, and is fastened to the coaxial cable male connector for transmitting the ultra-high frequency signal.

Figure 7 shows an example of the elements constituting the coaxial cable male connector 20 for transmitting an ultra-high frequency signal according to the present invention, as a coaxial cable male connector 20 for transmitting an ultra-high frequency signal according to the present invention May include a coaxial cable 30, shielding cans 270, 280, and 290, and may further include an adapter unit 40. In the coaxial cable 30, the outer shell 240, the outer conductor 230, and the dielectric 220 are partially stripped. The outer conductors 130 of each of the coaxial cables constituting the plurality of coaxial cables 30 may be connected to the shielding cans 270, 280, and 290. The shielding cans 270, 280, 290 accommodate, protect and fix the coaxial cable 30, and shield electromagnetic waves generated from the inner conductor 210 of the coaxial cable. The shielding cans 270, 280, 290 may be configured by combining the lower shielding member 270, the upper shielding member 280, and the front shielding unit 290, respectively, but as shown in FIG. 11, the first shielding member (310), it may be made of two parts (2 pieces) like the second shielding member (320), as shown in Figure 12, the upper, lower and the front of the shielding can be formed integrally 410. I can.

The adapter unit 40 is made of a plurality of adapters, and the adapter 42 facilitates the connection of the inner conductor 210 of the coaxial cable 30 to the circuit signal line terminal pad 214 formed on the PCB 215 The shielding cans 270, 280, 290, 310, 320, and 410 have a shape that facilitates shielding, and may include a conductor portion 250 and a dielectric portion 260. One end of the conductor part 250 is connected by being in contact with the signal line terminal pad 214 of the PCB 215, and the other end of the signal line 210, which is an inner conductor of the coaxial cable 30, is received and connected. When the inner conductor, which is the signal line of the cable, is received and connected to the adapter 42, the end of the conductor part 250 becomes the cable signal line terminal 255 of FIG. 4 and contacts the signal line terminal pad 214 of the PCB 215 And connected. The dielectric part 260 serves to separate the conductor part 250 and the shielding cans 270, 280, 290, 310, 320 and 410 when the conductor part 250 is accommodated in the shielding can.

The inside of the shielding can (270, 280, 290, 310, 320, 410) is a cylindrical inner conductor in which the adapters 42 connected in correspondence with the inner conductors 210 of a single or a plurality of coaxial cables can be accommodated. A receiving portion 272 or an adapter receiving portion 272 is provided. When the inner conductor receiving portion 272 does not have an adapter, the exposed inner conductor is accommodated, and when the lower shielding member 270, the upper shielding member 280, and the front shielding member 290 are combined, each exposed inner conductor is Shielding walls that are separated and shielded from each other are formed. The adapter accommodating portion 272 accommodates the adapter 42 connected to the inner conductor when there is an adapter, and when the lower shielding member 270, the upper shielding member 280, and the front shielding member 290 are combined, each adapter is Separated and shielded shielding walls are formed.

FIG. 8 is a cross-sectional view taken along line VII-VII of the coaxial cable male connector 20 for transmitting an ultra-high frequency signal according to the present invention shown in FIG. 2, and FIG. 9 is a coaxial cable male for transmitting an ultra-high frequency signal shown in FIG. It is a cross-sectional view taken along line VII-VII of the male) connector 20. 8 and 9, coaxial cables (210, 220, 230 240) and adapters (250, 260) are accommodated, protected and shielded by shielding cans (270, 280, 290), coaxial cable multi-connector ( 20) is inserted into the connector socket 225 mounted on the PCB 215 and fastened. In particular, FIG. 9 shows that when the lower shielding member 270, the upper shielding member 280, and the front shielding member 290 are combined, a shielding wall 275 that is separated from each other and shielded by each adapter is formed.

10 shows a process of assembling the first embodiment in which the shielding can of the coaxial cable multi-connector according to the present invention is composed of three parts (3 pieces). Referring to FIG. 10, after stripping the unstriped coaxial cable 60, the stripped coaxial cable 30 is connected to the adapter unit 40, and the coaxial cable 50 connected to the adapter unit 40 is lowered. The upper shielding member 280 and the front shielding member 290 are coupled by being seated on the shielding member 270.

The lower shielding member 270 is located under the shielding can and accommodates the exposed inner conductors of the coaxial cables, and the exposed inner conductor ends 255 are positioned. The upper shielding member 280 covers the exposed inner conductors of the coaxial cables accommodated in the lower shielding member 270. The front shielding member 290 is positioned on the front surface of the shielding can, and is combined with the lower shielding member 270 and the upper shielding member 280 to shield the exposed inner conductors of the coaxial cable.

FIG. 11 shows a process of assembling a second embodiment in which a shielding can of a male connector for a coaxial cable for transmitting an ultra-high frequency signal according to the present invention is composed of two pieces. Referring to FIG. 11, after stripping the unstriped coaxial cable 60, the stripped coaxial cable 30 is connected to the adapter unit 40, and the coaxial cable 50 connected to the adapter unit 40 is removed. 1 It is seated on the shielding member 310 and coupled to the second shielding member 320. The first shielding member 310 is located under the shielding can, accommodates exposed inner conductors of the coaxial cables, and ends 255 of the exposed inner conductors of the coaxial cable are located.

12 shows a process of assembling a third embodiment in which a shielding can of a male connector for an ultra-high frequency signal transmission according to the present invention is integrally formed (1 piece). Referring to FIG. 12, after stripping the unstriped coaxial cable 60, the stripped coaxial cable 30 is connected to the adapter unit 40, and the coaxial cable 50 connected to the adapter unit 40 is placed at the top. , The lower part and the front surface are mounted on the shielding member 410 integrally formed. The shielding member 410 shields the exposed inner conductors of the coaxial cable, and ends of the exposed inner conductors of the coaxial cable or terminals 255 of the adapter connected to the inner conductor ends are positioned on the bottom surface.

On the other hand, the coaxial cable male connector for transmitting ultra-high frequency signals according to the present invention can maximize electromagnetic wave shielding of the exposed inner conductor of the coaxial cable used as a signal line. Specifically, between the exposed inner conductors of each coaxial cable constituting a plurality of coaxial cables connected to the coaxial cable multi-connector according to the present invention, the inner conductor receiving portion or the shielding wall of the adapter receiving portion inside the shielding can Each is separated and individually shielded, and the shielding cans 270, 280, 290, 310, 320, 410 of the coaxial cable multi-connector 20 according to the present invention are connected to the outer conductor 230 of the coaxial cable 30. . The conductor connector socket 215 is connected to the ground of the PCB 215. When the coaxial cable multi-connector 20 is inserted into and fastened to the connector socket 225 mounted on the PCB 215, the shielding can of the coaxial cable multi-connector 20 connected to the outer conductor 230 of the coaxial cable 30 ( 270, 280, 290, 310, 320, 410 are connected by contact with the connector socket 225 connected to the ground of the PCB 215, so that the coaxial circuit signal line terminal pad 214 of the PCB 215 is directly contacted. Shielding of the signal line terminals of the cable multi-connector 20 can be maximized.

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely exemplary, and those of ordinary skill in the art will appreciate that various modifications and other equivalent embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical idea of the attached registration claims.

110: male connector 112: male connector housing
114: electrical signal line 150: female connector
152: female connector housing 154: terminal (pin) receiving member
20: coaxial cable multi-connector 210: inner conductor (signal line)
214: PCB terminal pad 215: printed circuit board (PCB)
220: dielectric 222: fastening part
225: connector socket 230: external conductor (shielding)
240: outer sheath (jacket) 250: adapter conductor
260: adapter dielectric part 270: lower shielding member
272: adapter receiving part 280: upper shielding member
290: front shielding member 30: coaxial cable
310: first shielding member 320: second shielding member
40: adapter unit 42: adapter
410: shielding member 50: coaxial cable connected to the adapter
60: Coaxial cable without strip

Claims (8)

In the coaxial cable male connector for ultra-high frequency signal transmission, which is accommodated in a connector socket installed on a printed circuit board (PCB) to connect a single or multiple coaxial cables and a printed circuit board (PCB),
A single or a plurality of coaxial cables, wherein the outer sheath, outer conductor, and dielectric of each coaxial cable are peeled off to expose an inner conductor of a predetermined length, and the exposed inner conductor terminal electrically contacts a signal line terminal pad formed on the PCB; And
A shielding can that accommodates the exposed inner conductors of the single or plural coaxial cables, fixes and protects the exposed inner conductor ends of the coaxial cable, and shields electromagnetic waves generated through the inner conductors of the plurality of coaxial cables. can),
Coaxial cable male connector for ultra-high frequency signal transmission, characterized in that the inner conductor terminals of the coaxial cable in electrical contact with the signal line terminal pad formed on the PCB are formed on the bottom of the shielding can. The method of claim 1, wherein the shielding can
Connected to the outer conductors of the coaxial cable,
It has an inner conductor receiving portion to accommodate the exposed inner conductor of each coaxial cable,
The inner conductor receiving portion accommodates the exposed inner conductors, but the exposed inner conductor of each coaxial cable is coupled with the inner conductor receiving portion, and the combined coaxial cable multi-connector is coupled with the adapter receiving portion to be mounted on the PCB. A coaxial cable male connector for transmitting ultra-high frequency signals, characterized in that shielding is made. The method of claim 1,
In order to make the inner conductor terminal of the coaxial cable in easy contact with the signal line terminal pad formed on the PCB, one end is connected to the exposed inner conductor of the coaxial cable and the other end is connected to the circuit signal line terminal pad formed on the PCB. More equipped,
Through the adapter, the inner terminal of the coaxial cable is connected to a circuit signal line terminal pad formed on the PCB. The method of claim 3, wherein the shielding can
And an adapter receiving portion accommodating a plurality of adapters connected to each of the exposed inner conductors of the plurality of coaxial cables, and the adapter receiving portion accommodates the plurality of adapters, but has a shape that can be shielded for each adapter. Male connector for coaxial cable for transmitting high-frequency signals. The method of claim 3,
The shielding can is connected to the outer conductor of the coaxial cable,
The connector socket accommodates the shielding can, and is electrically connected to the ground of the shielding can and the printed circuit board, so that each of the exposed internal conductors and adapters of the plurality of coaxial cables is electrically shielded. Transmission coaxial cable male connector. The method of claim 1, wherein the shielding can
A lower shielding member located under the shielding can, accommodating the exposed inner conductors of the coaxial cables, the exposed inner conductor ends; And
An upper shielding member covering the exposed inner conductors of coaxial cables accommodated in the lower shielding member;
A coaxial cable male connector for transmission of ultra-high frequency signals, which is located on the front of the shielding can and includes a front shielding member that shields the exposed inner conductors of the coaxial cable by combining with the lower shielding member and the upper shielding member. The method of claim 1, wherein the shielding can
A first shielding member located under the shielding can, accommodating the exposed inner conductors of the coaxial cables, and having ends of the exposed inner conductors of the coaxial cable positioned; And
And a second shielding member coupled with the first shielding member to shield the exposed inner conductors of the coaxial cable. The method of claim 1, wherein the shielding can
Ultra-high frequency, characterized in that the upper, lower, and front surfaces of the shielding can are integrally formed, and shield the exposed inner conductors of the coaxial cable, and the ends of the exposed inner conductors of the coaxial cable are located on the bottom surface. Coaxial cable male connector for signal transmission.

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