Radio frequency coaxial coupler

Abstract

The utility model discloses a radio frequency coaxial coupler, which comprises a main line shell and a coupling shell which are vertically connected, the main line shell is communicated with the coupling shell, a main line center pin is arranged in the main line shell, a coupling center pin is arranged in the coupling shell, and the middle part of the main line center pin is coupled with the tail part of the coupling center pin; the two ends of the main line housing are respectively provided with an annular assembly groove which is recessed inwards. The two ends of the main line shell of the radio frequency coaxial coupler can be respectively connected with a test device and a tested device in an inserted mode through the annular assembly grooves, the radio frequency coaxial coupler can be suitable for the tested device without a threaded hole or an installation hole in the surface, operation is convenient, cost can be effectively saved, and normal work of the tested device cannot be affected.

Description

Technical Field

[0001] The utility model relates to the technical field of microwave communication, in particular to a radio frequency coaxial coupler. Background Art

[0002] RF coaxial coupler is a power divider and also an unequal power divider. Coaxial coupler couples microwave signals in a specific ratio or synthesizes power, and is one of the commonly used components in the field of microwave equipment. Coaxial coupler generally adds a structure for coupling output on the main transmission rod to achieve the distribution of specific power from the main transmission rod and output. The relationship between input power and coupled output power is the coupling degree. The characteristics of coaxial coupler are simple structure, large carrying power, low intermodulation, etc.

[0003] Existing RF coaxial couplers are usually fixed to the cavity of the device using flanges and screws. They are suitable for tested devices with threaded holes or mounting holes on the surface. When testing and measuring some old devices, it is necessary to drill holes in the wall of the old device to fix the RF coaxial coupler on the old device. This is inconvenient to operate, difficult to save costs, and will affect the normal operation of the equipment. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a radio frequency coaxial coupler which is easy to assemble and disassemble and is not likely to affect the operation of the device under test.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a radio frequency coaxial coupler, comprising a main line housing and a coupling housing connected vertically, the main line housing is communicated with the coupling housing, a main line center needle is provided in the main line housing, a coupling center needle is provided in the coupling housing, the middle part of the main line center needle is coupled with the tail part of the coupling center needle; both ends of the main line housing are respectively provided with inwardly recessed annular assembly grooves.

[0006] Furthermore, the main line housing includes a main shell and a connecting nut, the connecting nut is sleeved on the outer periphery of the end of the main shell, the connecting nut is rotatable relative to the main shell, and the assembly groove is formed between the connecting nut and the main shell.

[0007] Furthermore, a first sealing ring is provided on the inner circumferential surface of the assembly groove.

[0008] Furthermore, it also includes a microwave absorption component, which includes a load center pin, an absorption load and a connecting shell which are sequentially arranged from the inside to the outside, the connecting shell is connected to the coupling shell, and one end of the load center pin is plugged into the coupling center pin.

[0009] Furthermore, the microwave absorption assembly also includes a chain, and two ends of the chain are respectively connected to the connecting shell and the main line shell.

[0010] Furthermore, the connecting shell and the coupling shell are connected via threads.

[0011] Furthermore, a first insulator and a second insulator for supporting the main line center needle are provided in the main line housing, the first insulator is located in the middle of the main line center needle, the second insulator is located at the tail of the main line center needle, and the coupling center needle is located between the first insulator and the second insulator.

[0012] Furthermore, the first insulator is provided with a through air tightness test hole.

[0013] Furthermore, a second sealing ring is provided between the main line center needle and the second insulator, and a third sealing ring is provided between the second insulator and the main line housing.

[0014] Furthermore, the main line housing and the coupling housing are connected by threads.

[0015] The beneficial effect of the utility model is that the two ends of the main line housing of the radio frequency coaxial coupler can be respectively plugged into the test equipment and the tested equipment through the annular assembly grooves, and can be suitable for the tested equipment without threaded holes or mounting holes on the surface. It is easy to operate, can effectively save costs, and will not affect the normal operation of the tested equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the radio frequency coaxial coupler of the first embodiment of the utility model;

[0017] Figure 2 It is a partial cross-sectional view of the radio frequency coaxial coupler of the first embodiment of the utility model;

[0018] Figure 3 This is a partial structural exploded view of the radio frequency coaxial coupler according to the first embodiment of the utility model.

[0019] Description of labels:

[0020] 11. Main line housing; 111. Main housing; 112. Connecting nut; 113. Assembly groove; 114. First sealing ring;

[0021] 12. Main line center needle; 13. First insulator; 131. Air tightness test hole;

[0022] 14. second insulator; 15. second sealing ring; 16. third sealing ring;

[0023] 21. Coupling housing; 22. Coupling center pin; 23. Third insulator;

[0024] 3. Microwave absorption components;

[0025] 31. Load center pin; 32. Absorb load; 33. Connect housing; 34. Fourth insulator; 35. Chain. DETAILED DESCRIPTION

[0026] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0027] Please refer to Figures 1 to 3 A radio frequency coaxial coupler comprises a main line housing 11 and a coupling housing 21 which are vertically connected. The main line housing 11 is communicated with the coupling housing 21. A main line center needle 12 is arranged in the main line housing 11, and a coupling center needle 22 is arranged in the coupling housing 21. The middle part of the main line center needle 12 is coupled with the tail part of the coupling center needle 22. Both ends of the main line housing 11 are respectively provided with an inwardly recessed annular assembly grooves 113.

[0028] From the above description, it can be seen that the beneficial effect of the utility model is that the two ends of the main line housing 11 of the RF coaxial coupler can be respectively plugged into the test equipment and the tested equipment through the annular assembly groove 113, and can be suitable for the tested equipment without threaded holes or mounting holes on the surface. It is easy to operate, can effectively save costs, and will not affect the normal operation of the tested equipment.

[0029] Furthermore, the main line housing 11 includes a main shell 111 and a connecting nut 112, the connecting nut 112 is sleeved on the outer periphery of the end of the main shell 111, the connecting nut 112 is rotatable relative to the main shell 111, and the assembly groove 113 is formed between the connecting nut 112 and the main shell 111.

[0030] It can be seen from the above description that the connecting nut 112 is used to connect the protruding threaded tube structure on the device under test, which is beneficial to enhancing the connection strength between the radio frequency coaxial coupler and the device under test.

[0031] Furthermore, a first sealing ring 114 is provided on the inner circumferential surface of the assembly groove 113 .

[0032] It can be seen from the above description that the first sealing ring 114 can close the assembly gap between the RF coaxial coupler and the test equipment or the device under test, prevent microwave leakage, and help improve the accuracy of the test results.

[0033] Furthermore, it also includes a microwave absorption component 3, which includes a load center needle 31, an absorption load 32 and a connecting shell 33 which are sequentially arranged from the inside to the outside, the connecting shell 33 is connected to the coupling shell 21, and one end of the load center needle 31 is plugged into the coupling center needle 22.

[0034] From the above description, it can be seen that the microwave absorption component 3 is used to absorb the microwave radiation energy transmitted from the coupling interface; the load center pin 31 and the coupling center pin 22 are plugged in and the center pin length of the coupling interface can be adjusted to determine the coupling degree requirement of the air part.

[0035] Furthermore, the microwave absorption component 3 further includes a chain 35 , and two ends of the chain 35 are respectively connected to the connection housing 33 and the main line housing 11 .

[0036] As can be seen from the above description, the chain 35 can prevent the microwave absorbing assembly 3 from being accidentally dropped after being separated from the main line housing 11 .

[0037] Furthermore, the connecting housing 33 and the coupling housing 21 are connected via threads.

[0038] It can be seen from the above description that the connection method of the connecting shell 33 and the coupling shell 21 is simple to operate and convenient for assembly and disassembly.

[0039] Furthermore, the main line housing 11 is provided with a first insulator 13 and a second insulator 14 for supporting the main line center needle 12, the first insulator 13 is located in the middle of the main line center needle 12, the second insulator 14 is located at the tail of the main line center needle 12, and the coupling center needle 22 is located between the first insulator 13 and the second insulator 14.

[0040] As can be seen from the above description, the first insulator 13 and the second insulator 14 are provided to support the main line center needle 12 and seal the interior of the RF coaxial coupler, so as to accommodate the coupling point between the main line center needle 12 and the coupling center needle 22.

[0041] Furthermore, the first insulator 13 is provided with a through airtightness test hole 131 .

[0042] It can be seen from the above description that the airtightness test hole 131 can be used to conveniently test whether the ultra-wideband coaxial coupler is sealed, thereby facilitating the detection of the waterproof performance of the radio frequency coaxial coupler.

[0043] Furthermore, a second sealing ring 15 is provided between the main line center needle 12 and the second insulator 14 , and a third sealing ring 16 is provided between the second insulator 14 and the main line housing 11 .

[0044] It can be seen from the above description that the second sealing ring 15 and the third sealing ring 16 can ensure the waterproof capability of the radio frequency coaxial coupler and prevent water vapor or dust from entering the interior of the radio frequency coaxial coupler and affecting its performance.

[0045] Furthermore, the main line housing 11 and the coupling housing 21 are connected by threads.

[0046] It can be seen from the above description that the connection method between the main line housing 11 and the coupling housing 21 is simple to operate and convenient for assembly and disassembly.

[0047] Please refer to Figures 1 to 3 , Embodiment 1 of the utility model is: a radio frequency coaxial coupler, including a connector body and a coupling interface, the connector body includes a main line housing 11, a first insulator 13, a second insulator 14 and a main line center pin 12, the coupling interface includes a coupling housing 21, a third insulator 23 and a coupling center pin 22; the main line housing 11 and the coupling housing 21 are vertically connected, and the main line housing 11 is connected to the coupling housing 21. The main line center pin 12 and the first insulator 13 and the second insulator 14 for supporting the main line center pin 12 are arranged in the main line housing 11, the first insulator 13 is located in the middle of the main line center pin 12, and the second insulator 14 is located at the tail of the main line center pin 12. The coupling center pin 22 and the third insulator 23 for supporting the coupling center pin 22 are arranged in the coupling housing 21. The middle of the main line center pin 12 is coupled with the tail of the coupling center pin 22, and the coupling center pin 22 is located between the first insulator 13 and the second insulator 14. In this embodiment, the main line housing 11 and the coupling housing 21 are connected by threads. A threaded hole connecting the outer peripheral surface and the inner cavity is opened on the peripheral wall of the main line housing 11. An external threaded portion matching the threaded hole is provided on the outer peripheral surface of the coupling housing 21. A locking nut is also provided on the outside of the coupling housing 21. The locking nut is used to lock the relative position of the coupling housing 21 and the main line housing 11.

[0048] The two ends of the main line housing 11 are respectively provided with an inwardly recessed annular assembly grooves 113. The two ends of the line housing can be plugged with the test equipment and the tested equipment through the annular assembly grooves 113 respectively.

[0049] The main line housing 11 includes a main housing 111 and a connecting nut 112. The connecting nut 112 is sleeved on the outer periphery of one end of the main housing 111 near the tail of the main line center needle 12. The connecting nut 112 is rotatable relative to the main housing 111, and an assembly groove 113 is formed between the connecting nut 112 and the main housing 111. The connecting nut 112 is used to connect the protruding threaded tube structure on the device under test, which is conducive to enhancing the connection strength between the radio frequency coaxial coupler and the device under test.

[0050] A first sealing ring 114 is provided on the inner circumference of the assembly groove 113. Specifically, the first sealing ring 114 is provided on the inner side of the connecting nut 112, and a first annular groove is provided on the outer circumference of the main line housing 11, and the first sealing ring 114 is provided in the first annular groove. The first sealing ring 114 can close the assembly gap between the RF coaxial coupler and the test equipment or the tested equipment, prevent microwave leakage, and help improve the accuracy of the test results.

[0051] The RF coaxial coupler also includes a microwave absorption component 3, which includes a load center pin 31, an absorption load 32, a fourth insulator 34 and a connection shell 33, which are sequentially arranged from the inside to the outside. The fourth insulator 34 is used to support the load center pin 31. The connection shell 33 is connected to the coupling shell 21, and one end of the load center pin 31 is plugged into the coupling center pin 22. Specifically, the absorption load 32 is closed at one end away from the main line shell 11. In this embodiment, the connection shell 33 and the coupling shell 21 are connected by threads. An internal threaded portion that cooperates with the external threaded portion of the coupling shell 21 is provided on the inner circumferential surface of the connection shell 33.

[0052] The microwave absorption assembly 3 further includes a chain 35, and two ends of the chain 35 are respectively connected to the connecting housing 33 and the main line housing 11. The chain 35 can prevent the microwave absorption assembly 3 from being accidentally lost after being separated from the main line housing 11.

[0053] The first insulator 13 is provided with a through airtightness test hole 131. Specifically, the airtightness test hole 131 is connected to the outside and a side of the first insulator 13 close to the coupling center pin 22. The airtightness test hole 131 can be used to conveniently test whether the ultra-wideband coaxial coupler is sealed, so as to facilitate the detection of the waterproof performance of the radio frequency coaxial coupler.

[0054] A second sealing ring 15 is provided between the main line center needle 12 and the second insulator 14, a second annular groove is provided on the outer circumference of the main line center needle 12, and the second sealing ring 15 is provided in the second annular groove. In other embodiments, a second annular groove is provided on the inner circumference of the second insulator 14, and the second sealing ring 15 is provided in the second annular groove. A third sealing ring 16 is provided between the second insulator 14 and the main line housing 11, a third annular groove is provided on the outer circumference of the second insulator 14, and the third sealing ring 16 is provided in the third annular groove. In other embodiments, a third annular groove is provided on the inner circumference of the main line housing 11, and the third sealing ring 16 is provided in the third annular groove.

[0055] In summary, the two ends of the main line housing of the RF coaxial coupler provided by the utility model can be respectively plugged with the test equipment and the tested equipment through the annular assembly groove, which can be applied to the tested equipment without threaded holes or mounting holes on the surface. It is easy to operate, can effectively save costs, and will not affect the normal operation of the tested equipment. The connecting nut is used to connect the protruding threaded tube structure on the tested equipment, which is conducive to enhancing the connection strength between the RF coaxial coupler and the tested equipment. The first sealing ring can close the assembly gap between the RF coaxial coupler and the test equipment or the tested equipment to prevent microwave leakage, which is conducive to improving the accuracy of the test results. The microwave absorption component is used to absorb the microwave microwave radiation energy transmitted from the coupling interface; the plugging of the load center pin and the coupling center pin can also adjust the center pin length of the coupling interface to determine the coupling degree requirements of the air part. The chain can prevent the microwave absorption component from being accidentally left behind after being separated from the main line housing. The first insulator and the second insulator are used to support the main line center pin while sealing the interior of the RF coaxial coupler, and accommodating the coupling between the main line center pin and the coupling center pin. The airtightness test hole can be used to conveniently test whether the ultra-wideband coaxial coupler is sealed, so as to facilitate the detection of the waterproof performance of the RF coaxial coupler. The second sealing ring and the third sealing ring can ensure the waterproof capability of the RF coaxial coupler and prevent water vapor or dust from entering the interior of the RF coaxial coupler to affect its performance.

[0056] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A radio frequency coaxial coupler, comprising a main line housing and a coupling housing connected vertically, the main line housing is communicated with the coupling housing, a main line center pin is arranged in the main line housing, a coupling center pin is arranged in the coupling housing, and the middle part of the main line center pin is coupled with the tail part of the coupling center pin; characterized in that: Both ends of the main line housing are respectively provided with inwardly recessed annular assembly grooves.

2. The radio frequency coaxial coupler according to claim 1, characterized in that: The main line housing comprises a main housing and a connecting nut. The connecting nut is sleeved on the outer periphery of the end of the main housing. The connecting nut is rotatable relative to the main housing. The assembly groove is formed between the connecting nut and the main housing.

3. The radio frequency coaxial coupler according to claim 1, characterized in that: A first sealing ring is arranged on the inner circumferential surface of the assembly groove.

4. The radio frequency coaxial coupler according to claim 1, characterized in that: It also includes a microwave absorption component, which includes a load center pin, an absorption load and a connection shell which are sequentially sleeved from the inside to the outside. The connection shell is connected to the coupling shell, and one end of the load center pin is plugged into the coupling center pin.

5. The radio frequency coaxial coupler according to claim 4, characterized in that: The microwave absorption component further comprises a chain, and two ends of the chain are respectively connected to the connection housing and the main line housing.

6. The radio frequency coaxial coupler according to claim 4, characterized in that: The connecting housing and the coupling housing are connected via threads.

7. The radio frequency coaxial coupler according to claim 1, characterized in that: The main line housing is provided with a first insulator and a second insulator for supporting the main line center needle. The first insulator is located in the middle of the main line center needle, the second insulator is located at the tail of the main line center needle, and the coupling center needle is located between the first insulator and the second insulator.

8. The radio frequency coaxial coupler according to claim 7, characterized in that: The first insulator is provided with a through airtightness test hole.

9. The radio frequency coaxial coupler according to claim 7, characterized in that: A second sealing ring is provided between the main line center needle and the second insulator, and a third sealing ring is provided between the second insulator and the main line housing.

10. The radio frequency coaxial coupler according to claim 1, characterized in that: The main line housing and the coupling housing are connected by threads.

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