A fixed value intermodulation direct

Abstract

The present invention discloses a fixed value intermodulation direct-through, including a shell and a transmission copper sheet, an input connector is arranged on a side wall of the shell, an output connector is arranged on a side wall of the shell opposite to the input connector, a fixing screw 1 is arranged between the input connector and the shell, a fixing screw 2 is arranged between the output connector and the shell, an input intermodulation tuning screw is arranged in a slotted hole opened on the other side wall of the shell, an output intermodulation tuning screw is arranged on one side of the input intermodulation tuning screw, and an input hole plugging screw is arranged on the other side of the input intermodulation tuning screw. The beneficial effect is that the present invention uses a transmission copper sheet between the connectors on both sides of the metal cavity to connect with the connectors at both ends, and uses the input intermodulation tuning screw and the output intermodulation tuning screw directly above the transmission copper sheet to adjust the intermodulation value. The structure is simple, the operation is convenient, and the manufacturing process is simple, the cost is low, and it is conducive to mass production and use.

Description

Technical Field

[0001] The invention relates to the technical field of intermodulation testing, and in particular to a fixed-value intermodulation direct-through. Background Art

[0002] When two or more signals of different frequencies act on a nonlinear circuit, they will modulate each other and generate a new frequency signal output. If the frequency happens to fall within the working channel bandwidth of the receiver, it will interfere with the receiver. This interference is called intermodulation interference. Intermodulation interference is generated by nonlinear circuits in the transmission channel. When two or more signals of different frequencies are input into a nonlinear circuit, many harmonics and combined frequency components will be generated due to the action of nonlinear devices. Among them, the combined frequency components close to the required signal frequency ω0 will pass through the receiver smoothly and form interference. This interference is called intermodulation interference.

[0003] During the intermodulation index test, since the test systems of various manufacturers are based on their factory standards, some differences will appear when different manufacturers' test systems test the same product. In addition, the existing test standard parts are relatively complex, costly, and inconvenient to operate, which is not conducive to mass production and convenient testing for users. Summary of the invention

[0004] The purpose of the present invention is to provide a fixed value intermodulation direct pass in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A fixed value intermodulation direct-through, comprising a shell and a transmission copper sheet, an input connector is arranged on one side wall of the shell, an output connector is arranged on the side wall of the shell opposite to the input connector, a fixing screw 1 is arranged between the input connector and the shell, a fixing screw 2 is arranged between the output connector and the shell, an input intermodulation tuning screw is arranged in a slot hole opened on the other side wall of the shell, an output intermodulation tuning screw is arranged on one side of the input intermodulation tuning screw, an input plugging screw is arranged on the other side of the input intermodulation tuning screw, and the output intermodulation tuning screw is arranged on the other side of the input intermodulation tuning screw. An output hole-blocking screw is provided on the other side of the nail, an inner cavity pipe is provided inside the outer shell, a fixing sleeve is provided inside the input joint and the output joint in the inner cavity pipe, a connecting rod is provided inside the fixing sleeve, the transmission copper sheet is provided between the connecting rods, an input copper sheet fixing screw is provided on one side of the transmission copper sheet and the connecting rod, an output copper sheet fixing screw is provided on the other side of the transmission copper sheet and the connecting rod, an inner core is provided on the side of the input joint and the output joint away from the inner cavity pipe, and a connecting cap is provided between the inner core and the connecting rod.

[0007] Furthermore, the input connector is fixedly connected to the housing via the fixing screw 1, and the fixing screw 1 passes through the threaded through hole of the input connector and the housing and is screwed together.

[0008] By adopting the above technical solution, the input connector is used to access the test system to input the test signal.

[0009] Furthermore, the output connector and the housing are fixedly connected by the second fixing screw, and the second fixing screw passes through the threaded through hole of the output connector and the housing and is screwed together.

[0010] By adopting the above technical solution, the output connector is used to access the analysis and test structure of the test system to analyze the interference data of the signal.

[0011] Furthermore, the input intermodulation tuning screw and the output intermodulation tuning screw are both fixedly connected to the housing via threads, and the input intermodulation tuning screw and the output intermodulation tuning screw are both cross-slot screws.

[0012] By adopting the above technical solution, the input intermodulation tuning screw and the output intermodulation tuning screw are used to access external interference signals and are both made of metal.

[0013] Furthermore, the input hole blocking screw and the output hole blocking screw are both fixedly connected to the housing via threads, and the input hole blocking screw and the output hole blocking screw are both slotted screws.

[0014] By adopting the above technical solution, the input plugging screw and the output plugging screw are used as spare access channels, and can be opened for standby when multiple interference signals need to be connected.

[0015] Furthermore, the inner cavity pipeline is formed in the outer shell, the fixed sleeve is connected to the input connector and the output connector through a slot, and the fixed sleeve is plugged into the inner cavity pipeline.

[0016] By adopting the above technical solution, the inner cavity pipe is made of metal material, and the fixing sleeve is made of insulating material.

[0017] Furthermore, the inner core is clamped in the input connector and the output connector, the connecting rod and the solid sleeve are penetrated and fixed, and the connecting rod and the inner core are fixedly connected via a connecting cap.

[0018] By adopting the above technical solution, the inner core and the connecting rod are both made of conductive materials and are used to transmit signals.

[0019] Furthermore, the transmission copper sheet and the connecting rod are connected by means of the input copper sheet fixing screw and the output copper sheet fixing screw, and both the input copper sheet fixing screw and the output copper sheet fixing screw are threadedly connected to the connecting rod.

[0020] By adopting the above technical solution, the transmission copper sheet is used to conduct signals and serves as an intermediate medium to adjust the intermodulation value.

[0021] Furthermore, the transmission copper sheet is in contact with the input intermodulation tuning screw and the output intermodulation tuning screw.

[0022] The specific working principle is: when the device is in use, it is installed on the test system through the input connector and the output connector, and the excitation signal is connected through the inner core. The excitation signal is transmitted to the transmission copper sheet through the connecting rod, and then output from the output connector. In addition, the interference signal is connected through the input intermodulation tuning screw and the output intermodulation tuning screw, and the connection with the transmission copper sheet is contacted or disconnected by adjusting the depth of the input intermodulation tuning screw and the output intermodulation tuning screw to achieve the purpose of inputting the interference signal. When the test systems of different manufacturers test the same product and there are some differences, the device can quickly adjust the input intermodulation tuning screw and the output intermodulation tuning screw to determine the differences between different intermodulation test systems to unify the intermodulation test standards. The operation is simple and fast, the device is simple to make, and the cost is low, which is conducive to large-scale production and use.

[0023] The beneficial effects of the present invention are:

[0024] The present invention uses a transmission copper sheet between the joints on both sides of the metal cavity to connect with the joints at both ends, and uses an input intermodulation tuning screw and an output intermodulation tuning screw just above the transmission copper sheet to adjust the intermodulation value. The structure is simple, the operation is convenient, the manufacturing process is simple, the cost is low, and it is conducive to mass production and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a fixed-value intermodulation direct connection according to the present invention;

[0026] Figure 2 It is a top sectional view of a fixed value intermodulation straight-through according to the present invention;

[0027] Figure 3 It is a schematic diagram of the structure of a fixed value intermodulation direct-through after the shell is separated;

[0028] Figure 4 It is a schematic diagram of the connection relationship between the inner core and the connecting rod in a fixed value intermodulation direct-through according to the present invention.

[0029] The following are the descriptions of the reference numerals:

[0030] 1. Input connector; 2. Fixing screw 1; 3. Output connector; 4. Fixing screw 2; 5. Housing; 6. Input plugging screw; 7. Output plugging screw; 8. Input intermodulation tuning screw; 9. Output intermodulation tuning screw; 10. Input copper sheet fixing screw; 11. Output copper sheet fixing screw; 12. Transmission copper sheet; 13. Inner cavity pipeline; 14. Fixing sleeve; 15. Connecting rod; 16. Inner core; 17. Connecting cap. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings:

[0032] like Figure 1-Figure 4 As shown, a fixed value intermodulation direct-through includes a shell 5 and a transmission copper sheet 12, an input connector 1 is arranged on one side wall of the outer shell 5, an output connector 3 is arranged on the side wall of the outer shell 5 opposite to the input connector 1, a fixing screw 1 2 is arranged between the input connector 1 and the shell 5, a fixing screw 2 4 is arranged between the output connector 3 and the shell 5, an input intermodulation tuning screw 8 is arranged in a slot hole opened on the other side wall of the outer shell 5, an output intermodulation tuning screw 9 is arranged on one side of the input intermodulation tuning screw 8, an input plugging screw 6 is arranged on the other side of the input intermodulation tuning screw 8, and an output intermodulation tuning screw 9 is arranged on the other side of the output intermodulation tuning screw 9. An output plugging screw 7 is provided, an inner cavity pipe 13 is provided inside the outer shell 5, a fixing sleeve 14 is provided in the inner cavity pipe 13 inside the input connector 1 and the output connector 3, a connecting rod 15 is provided inside the fixing sleeve 14, a transmission copper sheet 12 is provided between the connecting rods 15, an input copper sheet fixing screw 10 is provided on one side of the transmission copper sheet 12 and the connecting rod 15, and an output copper sheet fixing screw 11 is provided on the other side of the transmission copper sheet 12 and the connecting rod 15, an inner core 16 is provided inside the input connector 1 and the output connector 3 on the side away from the inner cavity pipe 13, and a connecting cap 17 is provided between the inner core 16 and the connecting rod 15.

[0033] In this embodiment, the input connector 1 is fixedly connected to the housing 5 by a fixing screw 2, and the fixing screw 2 passes through the threaded through hole of the input connector 1 and the housing 5 and is screwed together. The input connector 1 is used to connect to the test system to pass the test signal.

[0034] In this embodiment, the output connector 3 is fixedly connected to the housing 5 by fixing screws 24, and the fixing screws 24 pass through the threaded through holes of the output connector 3 and the housing 5 for screw connection. The output connector 3 is used to connect to the analysis and test structure of the test system to analyze the interference data of the signal.

[0035] In this embodiment, the input intermodulation tuning screw 8 and the output intermodulation tuning screw 9 are both fixedly connected to the housing 5 by threads. The input intermodulation tuning screw 8 and the output intermodulation tuning screw 9 are both cross-slot screws. The input intermodulation tuning screw 8 and the output intermodulation tuning screw 9 are used to connect external interference signals and are both made of metal.

[0036] In this embodiment, the input hole blocking screw 6 and the output hole blocking screw 7 are both fixedly connected to the outer shell 5 by threads. The input hole blocking screw 6 and the output hole blocking screw 7 are both flat-blade knife groove screws. The input hole blocking screw 6 and the output hole blocking screw 7 are used as backup access channels, and can be opened for backup when multiple interference signals need to be connected.

[0037] In this embodiment, the inner cavity pipe 13 is formed in the outer shell 5, the fixed sleeve 14 is connected to the input connector 1 and the output connector 3 through a slot, the fixed sleeve 14 is plugged into the inner cavity pipe 13, the inner cavity pipe 13 is made of metal material, and the fixed sleeve 14 is made of insulating material.

[0038] In this embodiment, the inner core 16 is clamped in the input connector 1 and the output connector 3, the connecting rod 15 is fixed through the solid sleeve, the connecting rod 15 and the inner core 16 are fixedly connected by the connecting cap 17, and the inner core 16 and the connecting rod 15 are both made of conductive materials for transmitting signals.

[0039] In this embodiment, the transmission copper sheet 12 is connected to the connecting rod 15 through the input copper sheet fixing screw 10 and the output copper sheet fixing screw 11. The input copper sheet fixing screw 10 and the output copper sheet fixing screw 11 are both threadedly connected to the connecting rod 15. The transmission copper sheet 12 is used to conduct signals and serves as an intermediate medium to adjust the intermodulation value.

[0040] In this embodiment, the transmission copper sheet 12 is in contact with the input intermodulation tuning screw 8 and the output intermodulation tuning screw 9 .

[0041] The specific working principle is: when the device is in use, it is installed on the test system through the input connector 1 and the output connector 3, and the excitation signal is connected through the inner core 16. The excitation signal is transmitted to the transmission copper sheet 12 through the connecting rod 15, and then output from the output connector 3. In addition, the interference signal is connected through the input intermodulation tuning screw 8 and the output intermodulation tuning screw 9, and the connection with the transmission copper sheet 12 is contacted or disconnected by adjusting the depth of the input intermodulation tuning screw 8 and the output intermodulation tuning screw 9 to achieve the purpose of inputting the interference signal. When the test systems of different manufacturers test the same product and there are partial differences, the device can quickly adjust the input intermodulation tuning screw 8 and the output intermodulation tuning screw 9 to determine the differences between different intermodulation test systems to unify the intermodulation test standards. The operation is simple and fast, the device is simple to manufacture, the cost is low, and it is conducive to mass production and use.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A fixed value intermodulation direct pass, characterized by: The invention comprises a housing (5) and a transmission copper sheet (12), wherein an input connector (1) is arranged on one side wall of the housing (5), an output connector (3) is arranged on the side wall of the housing (5) opposite to the input connector (1), a fixing screw (2) is arranged between the input connector (1) and the housing (5), a fixing screw (4) is arranged between the output connector (3) and the housing (5), an input intermodulation tuning screw (8) is arranged in a slot hole provided on the other side wall of the housing (5), an output intermodulation tuning screw (9) is arranged on one side of the input intermodulation tuning screw (8), an input hole blocking screw (6) is arranged on the other side of the input intermodulation tuning screw (8), an output hole blocking screw (7) is arranged on the other side of the output intermodulation tuning screw (9), and the An inner cavity pipe (13) is arranged inside the housing (5); a fixing sleeve (14) is arranged inside the inner cavity pipe (13) of the input connector (1) and the output connector (3); a connecting rod (15) is arranged inside the fixing sleeve (14); the transmission copper sheet (12) is arranged between the connecting rods (15); an input copper sheet fixing screw (10) is arranged on one side of the transmission copper sheet (12) and the connecting rod (15); an output copper sheet fixing screw (11) is arranged on the other side of the transmission copper sheet (12) and the connecting rod (15); an inner core (16) is arranged inside the input connector (1) and the output connector (3) on a side away from the inner cavity pipe (13); and a connecting cap (17) is arranged between the inner core (16) and the connecting rod (15).

2. The fixed value intermodulation direct pass according to claim 1, characterized in that: The input connector (1) and the housing (5) are fixedly connected via the fixing screw 1 (2), and the fixing screw 1 (2) passes through the threaded through hole of the input connector (1) and the housing (5) and is screwed together.

3. The fixed value intermodulation direct pass according to claim 1, characterized in that: The output connector (3) and the housing (5) are fixedly connected via the second fixing screw (4), and the second fixing screw (4) passes through the threaded through hole of the output connector (3) and the housing (5) and is screwed together.

4. The fixed value intermodulation direct pass according to claim 1, characterized in that: The input intermodulation tuning screw (8) and the output intermodulation tuning screw (9) are both fixedly connected to the housing (5) via threads, and the input intermodulation tuning screw (8) and the output intermodulation tuning screw (9) are both cross-slot screws.

5. The fixed value intermodulation direct pass according to claim 1, characterized in that: The input hole plugging screw (6) and the output hole plugging screw (7) are both fixedly connected to the housing (5) via threads, and the input hole plugging screw (6) and the output hole plugging screw (7) are both slotted screws.

6. The fixed value intermodulation direct pass according to claim 1, characterized in that: The inner cavity pipeline (13) is formed in the outer shell (5), the fixed sleeve (14) is connected to the input connector (1) and the output connector (3) via a slot, and the fixed sleeve (14) is plugged into the inner cavity pipeline (13).

7. The fixed value intermodulation direct pass according to claim 1, characterized in that: The inner core (16) is clamped in the input connector (1) and the output connector (3), the connecting rod (15) and the fixing sleeve (14) are penetrated and fixed, and the connecting rod (15) and the inner core (16) are fixedly connected via a connecting cap (17).

8. The fixed value intermodulation direct pass according to claim 1, characterized in that: The transmission copper sheet (12) and the connecting rod (15) are connected in cooperation with the input copper sheet fixing screw (10) and the output copper sheet fixing screw (11), and both the input copper sheet fixing screw (10) and the output copper sheet fixing screw (11) are threadedly connected to the connecting rod (15).

9. The fixed value intermodulation direct pass according to claim 1, characterized in that: The transmission copper sheet (12) is in contact with the input intermodulation tuning screw (8) and the output intermodulation tuning screw (9).

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