A waveguide coaxial conversion system

Abstract

The application provides a waveguide coaxial conversion system, which comprises a coaxial joint, a coaxial cover, a waveguide shell and an adjusting column, the coaxial joint is arranged on the coaxial cover, the bottom of the coaxial cover is provided with a hook and a clamping strip, the side of the waveguide shell is provided with a clamping groove matched with the hook, the top of the waveguide shell is provided with a clamping strip groove matched with the clamping strip, the inner side of the waveguide shell is provided with multiple steps, the step opposite to the center axis of the cavity is provided with a step through hole, the diameter of the step through hole gradually decreases from the step through hole close to the bottom of the waveguide shell to the step through hole close to the top of the waveguide shell, and a circular step through hole is formed, one end of the adjusting column is fixedly connected through the center of the coaxial joint, the other end of the adjusting column passes through the center of the coaxial cover and the step through hole, and the other end of the adjusting column is provided with a circular step matched with the circular step through hole; the application can improve the impedance matching of the waveguide coaxial conversion, has high matching performance, and can also increase the bandwidth and reduce the impedance effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of microwave communication technology, in particular to a waveguide coaxial conversion system. BACKGROUND

[0002] In the field of modern satellite communication and radio high technology, electronic communication systems and the like are developing rapidly, and various passive waveguides, coaxial lines, waveguide coaxial adapters and the like play a crucial role in the field of microwaves and millimeter waves; the waveguide coaxial converter is a converter from waveguide (TE mode) to coaxial line (TEM mode), and the commonly used method is a conversion joint; the outer conductor of the coaxial line is connected with the wide wall of the rectangular waveguide, and the extension part (probe) of the inner conductor is inserted into the waveguide to form a small radiation antenna, which excites electromagnetic waves of TE mode in the waveguide; in the rapid development of aerospace technology, the existing waveguide coaxial converter cannot meet the sealing requirements of high-precision equipment, and is prone to signal leakage problems; at the same time, with the rapid development of communication technology, the impedance matching performance of waveguide coaxial conversion is required to be higher and higher, and how to improve the conversion efficiency becomes a problem to be solved urgently. SUMMARY

[0003] The present application aims to solve at least one of the technical defects.

[0004] To this end, one object of the present application is to provide a waveguide coaxial conversion system, comprising a coaxial joint, a coaxial cover, a waveguide shell and an adjusting column, the coaxial joint is arranged on the coaxial cover, the bottom of the coaxial cover is provided with a hook and a clamping strip, the side of the waveguide shell is provided with a clamping groove matched with the hook, the top of the waveguide shell is provided with a clamping strip groove matched with the clamping strip, the inner side of the waveguide is provided with multiple steps, the step opposite to the center axis of the cavity is provided with a step through hole, the diameter of the step through hole gradually decreases from the step through hole close to the bottom of the waveguide shell to the step through hole close to the top of the waveguide shell, forming a circular step through hole, one end of the adjusting column passes through the center of the coaxial joint and is fixedly connected, the other end of the adjusting column passes through the center of the coaxial cover and the step through hole, the other end of the adjusting column is provided with a circular step matched with the circular step through hole, and a gap is left between the other end of the adjusting column and the inner wall of the step through hole and the circular step through hole.

[0005] Preferably, it further comprises a dielectric plate arranged in the waveguide shell between the step and the coaxial cover, and the adjusting column passes through the dielectric plate.

[0006] In any of the above schemes, preferably, a circular groove is arranged at the center of the coaxial cover, the diameter of the circular groove gradually decreases from the top end of the coaxial cover to the bottom end of the coaxial cover, the adjusting column passes through the circular groove, and a filtering filler is arranged in the circular groove.

[0007] In any of the above schemes, preferably, the bottom of the clamping strip groove is provided with a flexible conductive material.

[0008] Preferably in any of the above solutions, the four clamping hooks are arranged at the bottom of the coaxial cover, and the four clamping grooves are arranged at the two side surfaces of the waveguide shell.

[0009] Preferably in any of the above solutions, the two clamping strips are arranged at the bottom of the coaxial cover, and the two clamping strip grooves are arranged at the top of the waveguide shell.

[0010] The advantages and beneficial effects of the present application relative to the prior art are:

[0011] 1. The waveguide coaxial conversion system has a step through hole arranged at the step of the cavity center axis to form a circular step through hole, and the other end of the adjusting column is provided with a circular step matched with the circular step through hole, so that the impedance matching of the waveguide coaxial conversion can be improved, the matching performance is high, the bandwidth can be increased, the impedance effect can be reduced, and the matching performance can be improved.

[0012] 2. The waveguide coaxial conversion system has clamping hooks and clamping strips arranged at the bottom of the coaxial cover, clamping grooves matched with the clamping hooks arranged at the side surface of the waveguide shell, and clamping strip grooves matched with the clamping strips arranged at the top of the waveguide shell, so that the clamping hooks and the clamping grooves can be matched without disassembling screws, and the assembly can be easily completed, the clamping strips and the clamping strip grooves can be matched, the clamping strips can fix the coaxial cover to prevent lateral displacement, the structure is more stable, and more cost can be saved.

[0013] 3. The waveguide coaxial conversion system further comprises a dielectric plate, and the dielectric plate can improve the transmission performance of the waveguide coaxial conversion.

[0014] 4. The waveguide coaxial conversion system has a reverse circular step shape in the circular groove, and the circular groove is filled with a filter, so that the outside pollution can be filtered, the waveguide shell can be prevented from being polluted to cause the transmission performance to be reduced, and the flexible conductive medium is added in the clamping strip groove to reduce signal leakage and reduce transmission loss. BRIEF DESCRIPTION OF DRAWINGS

[0015] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings, in which:

[0016] Figure 1 FIG. 1 is a sectional view of a waveguide coaxial conversion system according to the present application;

[0017] Figure 2 FIG. 3 is a top view of a waveguide shell of a waveguide coaxial conversion system according to the present application;

[0018] Figure 3 FIG. 5 is a structural schematic view of a coaxial cover of a waveguide coaxial conversion system according to the present application.

[0019] In the drawings:

[0020] 1 - tuning column; 2 - waveguide housing; 3 - coaxial cover; 4 - dielectric plate; 5 - hook; 6 - clamping strip; 7 - clamping groove; 8 - clamping strip groove; 9 - step; 10 - circular step; 11 - circular step through hole; 12 - circular groove; 13 - filter filler; 14 - coaxial connector; 15 - flexible conductive material. DETAILED DESCRIPTION

[0021] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like reference numerals and characters designate the same or like components throughout the views. The embodiments described below are illustrative of the application and are not intended to be limiting thereof.

[0022] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] As shown in FIG. 1, Figure 2 and Figure 3 A waveguide coaxial conversion system according to the present application, as shown in FIG. 1, includes a coaxial connector 14, a coaxial cover 3, a waveguide housing 2 and a tuning column 1, the coaxial connector 14 is fixed above the coaxial cover 3, the bottom of the coaxial cover 3 is provided with a hook 5 and a clamping strip 6, the inside of the waveguide housing 2 is hollow, the side of the waveguide housing 2 is provided with a clamping groove 7 matched with the hook 5, the top of the waveguide housing 2 is provided with a clamping strip groove 8 matched with the clamping strip 6, the inside of the waveguide is provided with multiple steps 9, the step 9 opposite to the center axis of the cavity is provided with a step through hole, the diameter of the step through hole near the bottom of the waveguide housing 2 gradually decreases to the diameter of the step through hole near the top of the waveguide housing 2, forming a circular step through hole 11, one end of the tuning column 1 passes through the center of the coaxial connector 14 and is fixedly connected, the other end of the tuning column 1 passes through the center of the coaxial cover 3 and the step through hole, the other end of the tuning column 1 is provided with a circular step 10 matched with the circular step through hole 11, and a gap is left between the other end of the tuning column 1 and the inner wall of the step through hole and the inner wall of the circular step through hole 11.

[0024] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] Further, the medium plate 4 is arranged in the waveguide shell 2 between the step 9 and the coaxial cover 3, the medium plate 4 is a rectangular plate, the two ends of the medium plate 4 are respectively abutted on the inner side walls of the waveguide shell 2, and the adjusting column 1 passes through the medium plate 4; the transmission performance of the waveguide coaxial conversion can be improved by arranging the medium plate 4, the transmission loss is reduced, and the transmission efficiency is higher.

[0026] Further, the coaxial cover 3 is provided with a circular groove 12 at the center, the diameter of the circular groove 12 gradually decreases from the top end of the coaxial cover 3 to the bottom end of the coaxial cover 3, the adjusting column 1 passes through the circular groove 12, and the circular groove 12 is provided with a filtering filler 13; optionally, the filtering filler 13 is nylon, polytetrafluoroethylene material, glass fiber filter material or the like.

[0027] Further, the bottom of the clamping groove 8 is filled with a flexible conductive material 15, the flexible conductive material 15 can reduce the gap between the clamping strip 6 and the clamping groove 8, reduce the signal leakage loss, and improve the matching performance.

[0028] Further, the clamping hooks 5 are four and are distributed at the bottom of the coaxial cover 3, the clamping grooves 7 are four and are arranged on the two side surfaces of the waveguide shell 2, the clamping hooks are matched with the clamping grooves 7, through the above structure, the assembly is more convenient, and it is not necessary to disassemble the screws.

[0029] Further, the clamping strips 6 are two and are distributed at the bottom of the coaxial cover 3, the clamping groove 8 is two and is distributed at the top of the waveguide shell 2, the clamping strip 6 is matched with the clamping groove 8, through the above structure, the lateral movement of the coaxial cover 3 can be prevented, and the cooperation of the coaxial cover 3 and the waveguide shell 2 is more stable.

[0030] The use of the embodiment of the present application is that: the coaxial end is connected through the coaxial connector 14, and then the waveguide end is connected through the waveguide shell 2, in the assembly, only the coaxial cover 3 and the waveguide shell 2 need to be buckled, and the assembly is simple and convenient.

[0031] The use of the embodiment of the present application is that: the coaxial end is connected through the coaxial connector 14, and then the waveguide end is connected through the waveguide shell 2, in the assembly, only the coaxial cover 3 and the waveguide shell 2 need to be buckled, and the assembly is simple and convenient.

[0032] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in the embodiment or example are contained in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0033] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and that modifications, substitutions, replacements and variations of the above-described embodiments can be made by those skilled in the art without departing from the principles and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A waveguide-coaxial converter system, characterized in that: The system includes a coaxial connector, a coaxial cover, a waveguide housing, and a fitting post. The coaxial connector is mounted on the coaxial cover, which has a hook and a locking strip at its bottom. The waveguide housing has a groove on its side that engages with the hook, and a groove on its top that engages with the locking strip. The inner side of the waveguide housing has multiple steps, with a stepped through-hole at the step directly opposite the central axis of the cavity. The diameter of the stepped through-hole gradually decreases from near the bottom of the waveguide housing to a length near the top, forming a frustum. The mixing column has a through hole, one end of which passes through the center of the coaxial connector and is fixedly connected. The other end of the mixing column passes through the center of the coaxial cover and the stepped through hole. The other end of the mixing column is provided with a frustum that mates with the frustum through hole. A gap is left between the other end of the mixing column and the inner wall of the stepped through hole and the inner wall of the frustum through hole. A circular groove is provided at the center of the coaxial cover. The diameter of the circular groove gradually decreases from the top end of the coaxial cover to the bottom end of the coaxial cover. The mixing column passes through the circular groove, and filter filler is provided in the circular groove. It also includes a dielectric plate disposed within a waveguide housing between the step and the coaxial cover, and the tuning post passes through the dielectric plate.

2. The waveguide-coaxial converter system as described in claim 1, characterized in that: The bottom of the card slot is provided with a flexible conductive material.

3. The waveguide-coaxial converter system as described in claim 1, characterized in that: There are four hooks, which are distributed at the bottom of the coaxial cover, and four slots, which are located on both sides of the waveguide housing.

4. The waveguide-coaxial converter system as described in claim 1, characterized in that: There are two locking strips, located at the bottom of the coaxial cover, and two locking strip grooves, located at the top of the waveguide housing.

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