Connection jig for small connector test

Abstract

The connecting jig for testing miniature connectors for testing electrical characteristics of miniature connectors that transmit ultra-high frequency signals using a measuring instrument according to the present invention comprises first and second output terminals for connecting to signal lines of the measuring instrument; a jig body having a plate-like block shape and having an insertion hole penetrating from the top to the bottom of the plate-like block, into which the miniature connectors are inserted; a jig printed circuit board that is inserted into the bottom of the plate-like block and has a signal pattern formed thereon to be electrically connected to the miniature connectors received in the insertion hole; a lower cover that is detachable from the bottom of the jig body to fix the jig printed circuit board to the jig body; and an upper cover that is detachable from the top of the jig body to fix the miniature connector to the jig body.

Description

Technical Field

[0001] The present invention relates to a small connector test jig including an ultra-high frequency signal line, and particularly to a connection jig for testing a small connector in which the signal line in the small connector is connected to the signal line of a printed circuit board to achieve ultra-high frequency signal transmission.

Background Art

[0002] The next-generation 5G mobile communication system communicates through a low-frequency band and a high-frequency band of several tens of gigahertz, and also requires a low-loss RF cable for connecting a low-frequency band radiator and a module and for connecting a high-frequency band radiator of several gigahertz and a module inside an electronic device such as a smartphone. Thus, it is necessary to minimize the loss to the transmitted signal without being affected by the surrounding environment and to have excellent electrical characteristics for shielding that do not affect radiators for other uses, and a separate device is required to enable electrical measurement of the RF cable.

[0003] In a conventional PCB connector, a male connector in which terminals of an electrical signal line for transmitting an electrical signal such as a cable or a wire are covered by a male connector housing is inserted into and connected to a female connector (or socket) provided on a PCB. At this time, the female connector housing of the female connector is provided with a housing member for accommodating the terminals or pins of the male connector, and leakage current is generated through the housing member, resulting in signal loss and also limitations in miniaturizing the connector.

[0004] In order to solve such problems, a small connector for ultra-high frequency signal transmission has been developed that can complement shielding performance, reduce leakage current to minimize signal loss, and significantly reduce the height of the connector to achieve miniaturization.

[0005] It is necessary to test the electrical characteristics of the small connector for transmitting high and ultra-high frequency signals. However, since the small connector for transmitting ultra-high frequency signals is small, it is difficult to physically connect it directly to the measuring instrument for measuring the electrical characteristics. Therefore, in order to directly connect the small connector for transmitting ultra-high frequency signals and the measuring instrument, a separate test jig capable of electromagnetic shielding of the ultra-high frequency signal and individually isolating each signal line is required.

Summary of the Invention

Problems to be Solved by the Invention

[0006] The problem to be solved by the present invention is a jig for testing the electrical characteristics of the small connector for transmitting ultra-high frequency signals described above, which provides a low-loss transmission line and can shield the electrical radiation of the signal pattern of the printed circuit board, and to provide a connection jig for testing a small connector for transmitting ultra-high frequency signals.

Means for Solving the Problems

[0007] In a connection jig for testing a small connector for measuring the electrical characteristics of a small connector for transmitting an ultra-high frequency signal according to the present invention for achieving the above technical problem, a first output terminal and a second output terminal for connecting to a signal line of the measuring instrument; a jig body having a shape of a plate-like block, in which the small connector is inserted, and an insertion hole penetrating from the upper surface to the lower surface of the plate-like block is formed; a printed circuit board for the jig in which a signal pattern electrically connected to the small connector inserted into the lower surface of the plate-like block and accommodated in the insertion hole is formed; a lower cover that is detachable from the lower surface of the jig body and fixes the printed circuit board for the jig to the jig body; and an upper cover that is detachable from the upper surface of the jig body and fixes the small connector to the jig body.

[0008] The jig body is characterized in that a substrate mounting groove is formed on the lower surface so that the printed circuit board for the jig can be inserted.

[0009] The jig printing circuit board is any one of a rectangular panel structure, a circular panel, and a polygonal panel, and a first terminal pattern and a second terminal pattern for transmitting an ultra-high frequency signal in contact with signal terminals of the small connector are formed at the center of the upper surface of the rectangular panel, the circular panel, or the polygonal panel, and a first transmission line pattern for forming a transmission line between the first terminal pattern and the first output terminal and a second transmission line pattern for forming a transmission line between the second terminal pattern and the second output terminal are respectively formed on the lower surface of the rectangular panel, the circular panel, or the polygonal panel.

[0010] When the small connector is composed of a male connector and a female connector, the first terminal pattern and the second terminal pattern are respectively joined to the female connector by a soldering method.

[0011] The first transmission line pattern and the second transmission line pattern are symmetrically formed along the longitudinal direction from the center of the rectangular panel, the circular panel, or the polygonal panel.

[0012] The jig printing circuit board further includes a first dielectric pattern and a second dielectric pattern for insulating between the first transmission line pattern and the ground of the jig printing circuit board and between the second transmission line pattern and the ground of the jig printing circuit board.

[0013] A plurality of first via holes for signal isolation are formed at a point where the first transmission line pattern and the second transmission line pattern are adjacent to each other.

[0014] The jig printing circuit board is characterized in that a plurality of second via holes for noise shielding are formed in frame portions on both sides of the rectangular panel, the circular panel, or the polygonal panel.

[0015] The first via hole and the second via hole are each coated with a metallic substance on the hole surface, and one surface and the other surface of the rectangular panel, the circular panel, or the polygonal panel are electrically connected.

[0016] The lower cover includes a first space portion and a second space portion in which a certain space is formed at positions respectively facing the first transmission line pattern and the second transmission line pattern.

[0017] The upper cover is provided with a plurality of magnet members in the frame portion for attaching and detaching from the jig body, and a certain point in the frame portion includes a protruding portion that protrudes more than the frame portion of the jig body.

Advantages of the Invention

[0018] According to the small connector test connection jig for ultra-high frequency signal transmission according to the present invention, the electrical characteristics (Return loss, Insertion loss, Isolation, Crosstalk, EM Radiation Pattern, etc.) of the small connector for ultra-high frequency signal transmission can be easily tested. Further, according to the present invention, it is possible to shield the electrical radiation of the signal lines formed in the transmission lines of the printed circuit board mounted on the test jig while providing a low-loss transmission line, and each signal line can be individually isolated.

Brief Description of the Drawings

[0019]

Figure 1

Figure 2

Figure 3A

Figure 3B

Figure 4A

Figure 4B

Figure 4C

Figure 5A

Figure 5B

Figure 6A

Figure 6B

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0020] Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail. The embodiments described in this specification and the configurations shown in the drawings are merely preferred embodiments of the present invention and do not represent any of the technical ideas of the present invention. Therefore, it must be understood that there are various equivalents and modifications that can replace these at the time of this application.

[0021] FIG. 1 is a perspective view showing a state where a small connector test connection jig 100 (hereinafter referred to as a connection jig) according to an embodiment of the present invention is connected to a small connector 10.

[0022] The small connector 10 is a PCB connector that connects one or more ultra-high frequency signal lines for transmitting ultra-high frequency signals and a printed circuit board (PCB).

[0023] The small connector 10 is detachable from the connection jig 100 for small connector testing in order to transmit the ultra-high frequency signal transmitted and received through the transmission cable to the connection jig 100 for small connector testing.

[0024] The small connector 10 includes a male connector and a connector socket. The male connector is connected to the single or plural ultra-high frequency signal lines, houses the single or plural ultra-high frequency signal line terminals, fixes and protects the first high frequency signal line terminals, and is provided with a male connector housing. The connector socket houses the male connector housing and is fastened to the male connector. Such a connector socket can contact the printed circuit board (PCB) for jig constituting the connection jig 100. At this time, the ultra-high frequency signal line terminals of the male connector are directly contacted and connected to the signal line terminals formed on the printed circuit board for jig.

[0025] The connection jig 100 connects a measuring instrument (not shown) for testing the electrical characteristics (Return loss, Insertion loss, Isolation, Crosstalk, EM Radiation Pattern, etc.) of the small connector 10 that transmits the ultra-high frequency signal and the small connector 10.

[0026] FIG. 2 is an exploded perspective view of the connection jig 100 shown in FIG. 1.

[0027] Referring to FIG. 2, the connection jig 100 includes a jig main body 110, a printed circuit board 120 for jig, an upper cover 130, a lower cover 140, a first output terminal 150, and a second output terminal 160.

[0028] The jig main body 110 has the shape of a plate-like block and has a structure on which the small connector 10 is placed. Such a jig main body 110 is made of a metal material.

[0029] FIG. 3A is a perspective view of the jig main body 110 shown in FIG. 2 viewed from above, and FIG. 3B is a perspective view of the jig main body 110 shown in FIG. 2 viewed from below.

[0030] The jig body 110 includes an insertion hole 110-1. The insertion hole 110-1 is penetrated from the upper surface to the lower surface of the plate-like block into which the small connector 10 is inserted. The insertion hole 110-1 has a gradient formed on the upper boundary surface so that the small connector can be easily inserted.

[0031] As shown in FIG. 3B, a board placement groove 110-2 is formed on the lower surface of the jig body 110 so that the jig printed circuit board 120 can be inserted. The board placement groove 110-2 forms a groove corresponding to the outer shape of the jig printed circuit board 120 to a certain depth on the lower surface of the jig body 110 so that the jig printed circuit board 120 can be inserted and placed.

[0032] The jig body 110 includes a plurality of main body magnet members 110-3 in the groove of the frame portion of the plate-like block. The polarity of the main body magnet member 110-3 can have either the N pole or the S pole, which has the opposite polarity to the polarity of the magnet member provided on the upper lid described later.

[0033] FIG. 3B illustrates that the columnar main body magnet members 110-3 are arranged at four points in the frame portion of the plate-like block, but this is merely exemplary, and the number and position of the magnet members can be adjusted.

[0034] The jig body 110 can be provided on the side surface portion of the plate-like block with a first output hole 110-4 into which the first output terminal 150 is inserted and a second output hole 110-5 into which the second output terminal 160 is inserted.

[0035] Each of the first output hole 110-4 and the second output hole 110-5 penetrates the side surface of the substrate mounting groove 110-2. Thus, when the jig printed circuit board 120 is placed in the substrate mounting groove 110-2, the first output terminal 150 can be inserted into the first output hole 110-4 and contact one side of the lower surface of the jig printed circuit board 120, and the second output terminal 160 can be inserted into the second output hole 110-5 and contact the other side of the lower surface of the jig printed circuit board 120.

[0036] The jig printed circuit board 120 is inserted into a substrate mounting groove 110-2 formed on the lower surface of the jig body 110, and a signal pattern is formed that is electrically connected to the small connector 10 inserted into the insertion hole 110-1 of the jig body 110.

[0037] FIG. 4A is a perspective view of the jig printed circuit board 120 shown in FIG. 2 as viewed from above, FIG. 4B is a perspective view showing a state in which the female connector of the small connector 10 is coupled to the upper part of the jig printed circuit board 120, and FIG. 4C is a perspective view of the jig printed circuit board 120 shown in FIG. 2 as viewed from below.

[0038] The jig printed circuit board 120 connects the small connector 10 to the first output terminal 150 and the second output terminal 160.

[0039] In FIGS. 4A to 4C, the jig printed circuit board 120 exemplifies a rectangular panel structure, but the panel structure of the jig printed circuit board 120 is not limited to this, and may include a circular panel, a polygonal panel, and the like.

[0040] The jig printed circuit board 120 has a first terminal pattern 120-11 and a second terminal pattern 120-12 formed at the center of the upper surface 120-1 of a rectangular panel, a circular panel, or a polygonal panel to directly contact the signal terminals of the small connector 10 and transmit ultra-high frequency signals.

[0041] The first terminal pattern 120-11 and the second terminal pattern 120-12 are symmetrically arranged around the first via hole 120-23 at the center of the jig printed circuit board 120 at positions corresponding to the two signal terminals of the small connector 10 inserted into the insertion hole 110-1 of the jig body 110 so as to be in contact with the two signal terminals. The first terminal pattern 120-11 has a signal pattern extending through the jig printed circuit board 120 so as to be electrically connected to the first transmission line pattern 120-21 described later, and the second terminal pattern 120-12 also has a signal pattern extending through the jig printed circuit board 120 so as to be electrically connected to the second transmission line pattern 120-22 described later.

[0042] As shown in Fig. 4B, when the small connector 10 is composed of a male connector 10-1 and a female connector 10-2, the first terminal pattern 120-11 and the second terminal pattern 120-12 are respectively joined to the female connector 10-2 by a soldering method. That is, one side terminal of the first terminal pattern 120-11 and the female connector 10-2 are connected by a soldering joint, and the other side terminal of the second terminal pattern 120-12 and the female connector 10-2 are also connected by a soldering joint. At this time, the male connector 10-1 and the female connector 10-2 of the small connector 10 are formed in a detachable structure with each other.

[0043] The jig printed circuit board 120 includes a first transmission line pattern 120-21 that forms a transmission line between the first terminal pattern 120-11 and the first output terminal 150 on the lower surface 120-2 of a rectangular panel, a circular panel, or a polygonal panel, and a second transmission line pattern 120-22 that forms a transmission line between the second terminal pattern 120-12 and the second output terminal 160 are respectively formed. The first transmission line pattern 120-21 and the second transmission line pattern 120-22 are symmetrically formed in a stripe form along the longitudinal direction from the center of the rectangular panel, circular panel, or polygonal panel.

[0044] One side of the stripe of the first transmission line pattern 120-21 is connected to the first terminal pattern 120-11, and the other side of the stripe can contact the first output terminal 150. Also, one side of the stripe of the second transmission line pattern 120-22 is connected to the first terminal pattern 120-11, and the other side of the stripe can contact the second output terminal 160.

[0045] When testing the electrical characteristics (Return loss, Insertion loss, Isolation, Crosstalk, EM Radiation Pattern, etc.) of the small connector 10 for high-frequency signal transmission, since the size of the small connector 10 is small, it is difficult to physically connect it directly to the measuring instrument for measuring the electrical characteristics. Therefore, in order to directly connect the small connector 10 and the measuring instrument, the first output terminal 150 and the second output terminal 160 are included so as to secure a physical space to which the measuring instrument signal terminal is connected and the measuring instrument signal terminal is connected to the jig printed circuit board 120 by placing the jig printed circuit board 120.

[0046] In addition, in the jig printed circuit board 120, since one side of the first transmission line pattern 120-21 and one side of the second transmission line pattern 120-22 are adjacent to each other, a plurality of first via holes 120-23 for signal separation are formed between the adjacent first transmission line pattern 120-21 and second transmission line pattern 120-22. The jig printed circuit board 120 can have the first via holes 120-23 formed therein to prevent electrical crosstalk and interference between signal lines. A large number of first via holes 120-23 have an SIW (substrate integrated waveguide) function for impedance matching of the transmission line (signal pattern) and blocking leakage current (leakage radiation), and also serve as electrical connection between the upper plating layer and the lower plating layer. Each of the first via holes 120-23 has a hole surface coated with a metal material. Thereby, the upper surface 120-1 and the lower surface 120-2 of the rectangular panel, circular panel or polygonal panel are electrically connected and grounded by the first via holes 120-23. The diameter of each of the first via holes 120-23 is a size smaller than the distance between the first transmission line pattern 120-21 and the second transmission line pattern 120-22.

[0047] In addition, a champer (not shown) may be formed on the lower surface 120-2 of the jig printed circuit board 120 for impedance matching between the transmission line and the first output terminal 150 or the second output terminal 160.

[0048] On the lower surface 120-2 of the jig printed circuit board 120, a first dielectric pattern 120-3 and a second dielectric pattern 120-4 are formed to insulate between the first transmission line pattern 120-21 and the second transmission line pattern 120-22 for transmitting signals and the ground.

[0049] As shown in FIG. 4B, the first dielectric pattern 120-3 is formed in a form surrounding the first transmission line pattern 120-21, and the second dielectric pattern 120-4 is formed in a form surrounding the second transmission line pattern 120-22.

[0050] Also, on both sides of the frame portions of the rectangular panel, circular panel, or polygonal panel of the jig printed circuit board 120, a plurality of second via holes 120-5 for noise shielding are symmetrically formed. Each of the second via holes 120-5 has a hole surface coated with a metallic material. Thereby, the upper surface 120-1 and the lower surface 120-2 of the rectangular panel, circular panel, or polygonal panel are electrically connected and grounded by the second via holes 120-5. Each diameter of the second via holes 120-5 has a very large diameter compared to the aforementioned first via holes 120-23.

[0051] The material of the jig printed circuit board 120 can be any one of phenolic paper, epoxy, polyimide, thermosetting polyimide resin, Teflon, ceramic, and composite insulator. Also, the signal pattern that serves as a transmission line of the jig printed circuit board 120 can be formed in forms such as microstrip, stripline, CPW (coplanar waveguide), CPWG (coplanar waveguide with ground).

[0052] The upper cover 130 is detachable from the upper surface of the jig body 110 and fixes the small connector 10 to the jig body 110. The upper cover 130 electromagnetically shields the signal pattern, which is a transmission line formed on the jig printed circuit board 120, by being coupled with the jig body 110.

[0053] Such an upper cover 130 is also made of a metallic material and can also be formed of a transparent polycarbonate material.

[0054] FIG. 5A is a perspective view of the upper cover 130 shown in FIG. 2 as viewed from above, and FIG. 5B is a perspective view of the upper cover 130 shown in FIG. 2 as viewed from below.

[0055] Referring to FIGS. 5A and 5B, the upper cover 130 is provided with a plurality of cover magnet members 130-1 in the grooves of the frame portion for detaching from the jig body 110. The polarity of the cover magnet member 130-1 can have either the N pole or the S pole, and such a polarity has a polarity opposite to that of the body magnet member 110-3 of the jig body 110 described above. Also, the arrangement position of the cover magnet member 130-1 is arranged at a point corresponding to the position where the body magnet member 110-3 is arranged.

[0056] Due to the attracting action between the cover magnet member 130-1 and the body magnet member 110-3, the upper cover 130 can be easily coupled to the upper surface of the jig body 110 and can be easily detached. FIG. 5A illustrates that the cylindrical cover magnet members 130-1 are arranged at four points in the frame portion of the plate-shaped cover, but this is merely exemplary, and the number and position of the cover magnet members can be adjusted.

[0057] Among the points where the cover magnet members 130-1 are arranged on the upper cover 130, some frame portions may include a protruding portion 130-2 that protrudes further than the frame of the jig body 110. The protruding portion 130-2 has a cylindrical structure, and the upper cover 130 can be easily detached from the jig body 110 by such a protruding protruding portion 130-2.

[0058] The lower cover 140 is detachably attached to the lower surface of the jig body 110 and fixes the jig printed circuit board 120 in the board mounting groove 110-2 of the jig body 110. The lower cover 140 electromagnetically shields a signal pattern, which is a transmission line formed on the jig printed circuit board 120, by being coupled to the jig body 110. Such a lower cover 140 is made of a metal material.

[0059] FIG. 6A is a perspective view of the lower cover 140 shown in FIG. 2 viewed from above, and FIG. 6B is a perspective view of the lower cover 140 shown in FIG. 2 viewed from below.

[0060] The lower cover 140 includes a first space portion 140-1 and a second space portion 140-2 in which a certain space is formed at positions facing the first transmission line pattern 120-21 and the second transmission line pattern 120-22, respectively. The first space portion 140-1 forms an air space in a form similar to the stripe of the first transmission line pattern 120-21 at a position facing the first transmission line pattern 120-21. Also, the second space portion 140-2 forms an air space in a form similar to the stripe of the second transmission line pattern 120-22 at a position facing the second transmission line pattern 120-22.

[0061] The first space portion 140-1 functions as an air partition for blocking interference between the signal flowing through the first transmission line pattern 120-21 and the signal flowing through the second transmission line pattern 120-22. Also, the second space portion 140-2 also functions as an air partition for blocking interference between the signal flowing through the second transmission line pattern 120-22 and the signal flowing through the first transmission line pattern 120-21.

[0062] The lower cover 140 may include a plurality of coupling members 140-3 for coupling to the lower surface of the jig body 110. The coupling member 140-3 has a bolt structure and is fastened to the nut structure formed on the jig body 110 by a screw insertion method.

[0063] The first output terminal 150 and the second output terminal 160 are signal terminals for connecting to the signal lines of the measuring instrument. The first output terminal 150 and the second output terminal 160 are connected to the transmission / reception signal terminals (not shown) of the measuring instrument.

[0064] FIG. 7 is an enlarged reference view of the first output terminal 150 or the second output terminal 160 shown in FIG. 2.

[0065] Referring to FIG. 7, the first output terminal 150 or the second output terminal 160 includes a terminal portion 150-1 (160-1) and a coupling member 150-2 (160-2) for contacting the jig printed circuit board 120, respectively.

[0066] One end of the terminal portion 150-1 (160-1) is connected to the jig printed circuit board 120, and the other end is connected to a transmission / reception signal terminal (not shown) of the measuring instrument. Further, the coupling member 150-2 (160-2) couples the terminal portion 150-1 (160-1) to the jig body 110. The coupling member 150-2 (160-2) has a bolt structure and is fastened to a nut structure formed on the jig body 110 by a screw insertion method.

[0067] FIG. 8 is a reference diagram illustrating the coupling relationship of the first output terminal 150 coupled to the jig body 110. Referring to FIG. 8, in order for the first output hole 110-4 of the jig body 110 to be coupled to the first output terminal 150, a shape for impedance matching of the signal line is formed on the contact surface that comes into contact with the first output terminal 150.

[0068] As described above, the present invention has been described mainly with respect to its preferred embodiments. Those skilled in the art will understand that the present invention can be embodied in a modified form without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered from an illustrative rather than a limiting point of view. The scope of the present invention is shown not in the foregoing description but in the claims, and all differences within the scope equivalent thereto should be construed as being included in the present invention.

Industrial Applicability

[0069] The present invention is used in the field of manufacturing connectors used for high-frequency communication.

Claims

1. In a connection jig for a small connector for testing the electrical characteristics of a small connector that transmits a high-frequency signal using a measuring instrument, a first output terminal and a second output terminal for connecting to a signal line of the measuring instrument; a jig body having a plate-like block shape, into which the small connector is inserted, and an insertion hole formed therethrough from the upper surface to the lower surface of the plate-like block; a printed circuit board for the jig, which is inserted into the lower surface of the plate-like block and has a signal pattern formed thereon that is electrically connected to the small connector housed in the insertion hole; a lower lid that is detachable from the lower surface of the jig body and fixes the printed circuit board for the jig to the jig body; an upper lid that is detachable from the upper surface of the jig body and fixes the small connector to the jig body, and includes: the jig body has a board mounting groove formed on the lower surface so that the printed circuit board for the jig can be inserted; the upper lid covers the entire upper surface of the jig body and electromagnetically shields the signal pattern formed on the printed circuit board for the jig. A connection jig for a small connector for testing, characterized in that.

2. The printed circuit board for the jig is any one of a rectangular panel structure, a circular panel, and a polygonal panel, and a first terminal pattern and a second terminal pattern for contacting signal terminals of the small connector and transmitting a high-frequency signal are formed at the center of the upper surface of the rectangular panel, the circular panel, or the polygonal panel. The connection jig for a small connector for testing according to claim 1, wherein a first transmission line pattern for forming a transmission line between the first terminal pattern and the first output terminal and a second transmission line pattern for forming a transmission line between the second terminal pattern and the second output terminal are respectively formed on the lower surface of the rectangular panel, the circular panel, or the polygonal panel.

3. When the small connector is composed of a male connector and a female connector, the first terminal pattern and the second terminal pattern are each joined to the female connector by a soldering method. The connection jig for a small connector for testing according to claim 2, characterized in that.

4. The connection jig for a small connector for testing according to claim 2, wherein the first transmission line pattern and the second transmission line pattern are symmetrically formed along the longitudinal direction from the center of the rectangular panel, the circular panel, or the polygonal panel, respectively.

5. The small connector test connection jig according to claim 4, further comprising a first dielectric pattern and a second dielectric pattern for insulating between the first transmission line pattern and the ground of the jig printed circuit board, and between the second transmission line pattern and the ground of the jig printed circuit board.

6. The small connector test connection jig according to claim 4, wherein a plurality of first via holes for signal separation are formed at a point where the first transmission line pattern and the second transmission line pattern are adjacent to each other.

7. The jig printed circuit board The small connector test connection jig according to claim 2, wherein a plurality of second via holes for noise shielding are formed in frame portions on both sides of the rectangular panel, the circular panel, or the polygonal panel.

8. The small connector test connection jig according to claim 6, wherein the surface of the hole of the first via hole is coated with a metallic substance, and one surface and the other surface of the rectangular panel, the circular panel, or the polygonal panel are electrically connected.

9. The lower cover The small connector test connection jig according to claim 2, comprising a first space portion and a second space portion in which a certain space is formed at positions facing the first transmission line pattern and the second transmission line pattern, respectively.

10. The upper cover is provided with a plurality of magnet members in the frame portion for detaching from the jig body, The small connector test connection jig according to claim 1, wherein a certain point of the frame portion includes a protruding portion that protrudes more than the frame portion of the jig body.

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