Coaxial coupler

Abstract

The utility model discloses a coaxial coupler, which comprises a coupler main body and a cover plate, the top of the coupler main body is provided with a groove body, two ends of the coupler main body are provided with coaxial external connection shells, two ends of the groove body extend out of the coupler main body to form two through holes, and the two through holes are coaxially arranged; the cover plate is arranged at the top of the coupler body and seals the groove body to form a coupling cavity, a coaxial transmission line is arranged in the coupling cavity, and the two ends of the coaxial transmission line penetrate through the two through holes in the coupler body and are both inserted into the coaxial external shell. The cover plate is provided with two coaxial connectors, and probes of the coaxial connectors extend into the coupling cavity. According to the coaxial coupler provided by the utility model, the coaxial connecting line and the inner conductors of the coaxial connectors at the inlet end and the outlet end are combined into a whole, so that the structure is simpler, the transmission loss is reduced, the installation is convenient, and the processing cost is low.

Description

Technical Field

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

[0002] The coaxial power coupler is similar to a non-isolated power divider, and can also be regarded as a type of unequal power divider. It is mainly used to couple or synthesize microwave signals in a specific ratio. It is one of the commonly used components in the field of microwave technology and often appears in the form of a coaxial structure. Generally, a structure for coupling output is added to the main transmission line to achieve the distribution of specific power from the main transmission line and output from another port. The relationship between the input power and the coupled output power is the coupling degree. The coaxial power coupler is characterized by a simple structure, large carrying power, and low intermodulation.

[0003] In the prior art, the coaxial coupler usually connects the two ends of the coaxial transmission line in the coupling cavity to the conductor inside the connector by welding, which increases the transmission loss and is inconvenient to assemble. Utility Model Content

[0004] The purpose of the utility model is to provide a coaxial coupler to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coaxial coupler, comprising a coupler body and a cover plate, wherein a slot is formed on the top of the coupler body, and a coaxial external shell is installed at both ends of the coupler body, and two through holes are extended out of the coupler body at both ends of the slot, and the two through holes are coaxially arranged; the cover plate is arranged on the top of the coupler body and closes the slot to form a coupling cavity, and a coaxial transmission line is arranged in the coupling cavity, and both ends of the coaxial transmission line pass through the two through holes on the coupler body and are inserted into the coaxial external shell; two coaxial connectors are arranged on the cover plate, and the probes of the coaxial connectors extend into the coupling cavity.

[0006] Preferably, the coaxial transmission line is cylindrical, with blind holes at the top of both ends, and four grooves evenly spaced between the inner wall of the blind hole and the outer wall of the coaxial transmission line, so that four evenly distributed arc walls are formed at both ends of the coaxial transmission line, and the four arc walls are bent toward the center of the circle to form a closed end.

[0007] Preferably, the coaxial external shell is cylindrical, with a connecting flange and a first cylindrical inner cavity at one end close to the coupler body, and an external thread and a second cylindrical inner cavity at one end away from the coupler body. The connecting flange is connected to the coupler body, and an inner cavity through hole is provided between the first cylindrical inner cavity and the second cylindrical inner cavity. The coaxial external shell, the first cylindrical inner cavity, the second cylindrical inner cavity, and the inner cavity through hole are coaxial with the two through holes on the coupler body.

[0008] Preferably, the first cylindrical inner cavity of the coaxial external shell is filled with insulating support columns, the insulating support columns are provided with coaxial support column through holes, the coaxial transmission line passes through the support column through holes and extends to the second cylindrical inner cavity of the coaxial external shell, and the insulating support column through holes are tightly matched with the coaxial transmission line.

[0009] Preferably, both ends of the coaxial transmission line are respectively provided with limiting steps, and the limiting steps are in contact with the end faces of the insulating support columns at both ends.

[0010] Preferably, the insulating support column is made of polytetrafluoroethylene.

[0011] Preferably, a coupling belt is provided in the coupling cavity, the coupling belt is arranged close to the cover plate, and the probes of the two coaxial connectors are respectively in contact with and matched with two ends of the coupling belt.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. Combine the coaxial connecting wire and the inner conductor of the coaxial connector at both ends into one;

[0014] 2. Less transmission loss.

[0015] 3. The structure is more streamlined.

[0016] The coaxial coupler provided by the utility model integrates the coaxial connecting line and the inner conductor of the coaxial connector at both ends into one, so that the structure is more streamlined, the transmission loss is reduced, the installation is convenient, and the processing cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A structural schematic diagram of a coaxial coupler of the utility model;

[0018] Figure 2 A schematic diagram of the internal structure of the coaxial coupler of the utility model;

[0019] Figure 3 A schematic diagram of the main structure of the coupler of the utility model;

[0020] Figure 4 A schematic diagram of the structure of the coaxial transmission line of the utility model;

[0021] Figure 5 A schematic cross-sectional view of the structure of the coaxial transmission line of the utility model;

[0022] Figure 6 A schematic diagram of the structure of the coaxial external housing of the utility model;

[0023] Figure 7 A schematic diagram of the structure of the insulating support column of the utility model.

[0024] In the figure: 1. coupler body; 101. slot body; 102. through hole; 2. cover plate; 3. coupling cavity; 4. coaxial transmission line; 401. blind hole; 402. slot; 403. arc wall; 404. limiting step; 5. coaxial external shell; 501. connecting flange; 502. first cylindrical inner cavity; 503. external thread; 504. second cylindrical inner cavity; 505. inner cavity through hole; 6. insulating support column; 601. support column through hole; 7. coaxial connector; 701. probe; 8. coupling belt. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-7 The utility model provides a technical solution: a coaxial coupler, comprising a coupler body 1 and a cover plate 2, a slot body 101 is opened on the top of the coupler body 1, and a coaxial external shell 5 is installed at both ends of the coupler body 1, two through holes 102 are extended out of the coupler body 1 at both ends of the slot body 101, and the two through holes 102 are coaxially arranged; the cover plate 2 is arranged on the top of the coupler body 1 and closes the slot body 101 to form a coupling cavity 3, a coaxial transmission line 4 is arranged in the coupling cavity 3, and both ends of the coaxial transmission line 4 pass through the two through holes 102 on the coupler body 1 and are inserted into the coaxial external shell 5; two coaxial connectors 7 are arranged on the cover plate 2, and the probe 701 of the coaxial connector 7 extends into the coupling cavity 3.

[0027] In the utility model, the coaxial transmission line 4 is cylindrical, with blind holes 401 at the top of both ends, and four grooves 402 are evenly spaced between the inner wall of the blind hole 401 and the outer wall of the coaxial transmission line 4, so that four evenly distributed arc walls 403 are formed at both ends of the coaxial transmission line 4, and the four arc walls 403 are bent toward the center of the circle to form a closed end.

[0028] In the utility model, the coaxial external shell 5 is cylindrical, and is provided with a connecting flange 501 and a first cylindrical inner cavity 502 at one end close to the coupler body 1, and is provided with an external thread 503 and a second cylindrical inner cavity 504 at one end away from the coupler body 1. The connecting flange 501 is connected to the coupler body 1, and an inner cavity through hole 505 is provided between the first cylindrical inner cavity 502 and the second cylindrical inner cavity 504. The coaxial external shell 5, the first cylindrical inner cavity 502, the second cylindrical inner cavity 504, and the inner cavity through hole 505 are coaxial with the two through holes 102 on the coupler body 1.

[0029] In the utility model, the first cylindrical inner cavity 502 of the coaxial external shell 5 is filled with an insulating support column 6, and the insulating support column 6 has a coaxial support column through hole 601. The coaxial transmission line 4 passes through the support column through hole 601 and extends to the second cylindrical inner cavity 504 of the coaxial external shell 5. The insulating support column through hole 601 is tightly matched with the coaxial transmission line 4.

[0030] In the present invention, both ends of the coaxial transmission line 4 are provided with limiting steps 404 , and the limiting steps 404 are in contact with the end faces of the insulating support pillars 6 at both ends.

[0031] In the present invention, the material of the insulating support column 6 is polytetrafluoroethylene.

[0032] In the present invention, a coupling belt 8 is provided in the coupling cavity 3 , and the coupling belt 8 is arranged close to the cover plate 2 , and the probes 701 of the two coaxial connectors 7 are respectively in contact with and matched with the two ends of the coupling belt 8 .

[0033] The utility model integrates the coaxial connecting wire and the inner conductor of the coaxial connector at both ends into one, so that the structure is more streamlined, the transmission loss is reduced, the installation is convenient, and the processing cost is low.

[0034] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. Although the embodiments of the utility model have been shown and described, it is understandable to those of ordinary skill in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A coaxial coupler, characterized in that: The invention comprises a coupler body (1) and a cover plate (2); the coupler body (1) has a slot body (101) on the top, and coaxial external shells (5) are installed at both ends of the coupler body (1); two through holes (102) extend outward from the coupler body (1) at both ends of the slot body (101); the two through holes (102) are coaxially arranged; the cover plate (2) is arranged on the top of the coupler body (1) and closes the slot body (101) to form a coupling cavity (3); a coaxial transmission line (4) is arranged in the coupling cavity (3); both ends of the coaxial transmission line (4) pass through the two through holes (102) on the coupler body (1) and are inserted into the coaxial external shell (5); two coaxial connectors (7) are arranged on the cover plate (2); probes (701) of the coaxial connectors (7) extend into the coupling cavity (3).

2. A coaxial coupler according to claim 1, characterized in that: The coaxial transmission line (4) is cylindrical, with blind holes (401) opened at the tops of both ends, and four slots (402) evenly spaced between the inner wall of the blind hole (401) and the outer wall of the coaxial transmission line (4), so that four evenly distributed arc walls (403) are formed at both ends of the coaxial transmission line (4), and the four arc walls (403) are bent toward the center of the circle to form a closed end.

3. A coaxial coupler according to claim 1, characterized in that: The coaxial external shell (5) is cylindrical, and is provided with a connecting flange (501) and a first cylindrical inner cavity (502) at one end close to the coupler body (1), and is provided with an external thread (503) and a second cylindrical inner cavity (504) at one end away from the coupler body (1); the connecting flange (501) is connected to the coupler body (1); an inner cavity through hole (505) is provided between the first cylindrical inner cavity (502) and the second cylindrical inner cavity (504); the coaxial external shell (5), the first cylindrical inner cavity (502), the second cylindrical inner cavity (504), and the inner cavity through hole (505) are coaxial with the two through holes (102) on the coupler body (1).

4. A coaxial coupler according to claim 1, characterized in that: The first cylindrical inner cavity (502) of the coaxial external shell (5) is filled with an insulating support column (6), and the insulating support column (6) is provided with a coaxial support column through hole (601). The coaxial transmission line (4) passes through the support column through hole (601) and extends to the second cylindrical inner cavity (504) of the coaxial external shell (5), and the insulating support column through hole (601) is tightly matched with the coaxial transmission line (4).

5. The coaxial coupler according to claim 1, characterized in that: The coaxial transmission line (4) is provided with a limiting step (404) at each end, and the limiting step (404) is in contact with the end faces of the insulating support columns (6) at the two ends.

6. A coaxial coupler according to claim 4, characterized in that: The material of the insulating support column (6) is polytetrafluoroethylene.

7. A coaxial coupler according to claim 1, characterized in that: A coupling belt (8) is provided in the coupling cavity (3), and the coupling belt (8) is arranged in close contact with the cover plate (2). The probes (701) of the two coaxial connectors (7) are respectively in contact with and matched with the two ends of the coupling belt (8).

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