CN221150314U - Anti-vibration open waveguide antenna - Google Patents

Abstract

The utility model discloses an anti-vibration open waveguide antenna, which comprises an installation bottom plate and an open waveguide fixedly installed on the installation bottom plate, wherein a coaxial connector is installed on one side of the open waveguide; the coaxial connector is internally provided with a mandrel conductor used for transmitting radio frequency signals, and the mandrel conductor extends into the inner cavity of the open waveguide; one side of the fixed block is provided with a fixed hole, and the end part of the core shaft conductor is clamped in the fixed hole of the fixed block. According to the utility model, the fixing block is arranged in the open waveguide, the mandrel conductor is clamped on the fixing block, and the end part of the mandrel conductor is supported and limited through the fixing block, so that the mandrel conductor is prevented from being in a suspended state, and the position of the mandrel conductor is kept stable in a vibration state.

Description

Anti-vibration open waveguide antenna

Technical Field

The utility model relates to the technical field of radar antennas, in particular to an anti-vibration open waveguide antenna.

Background

An open waveguide antenna is a bore antenna, and a horn antenna is common. Horn antennas are often used as feed antennas in large radio astronomy, satellite tracking, and communication antennas. In addition to being a feed for reflectors and lenses, it is also a common unit for phased arrays and is a common standard for calibration and gain measurement of other antennas. In the prior art, such antennas are typically fed from the side and the core shaft conductor of the coaxial connector that emits the radio frequency signal extends into the open waveguide cavity and is suspended. However, in such a structure, due to the suspended arrangement of the core shaft conductors for transmitting signals, the core shaft conductors are easily affected by environmental vibration in vibration environments such as an airplane, and even deform, so that the antenna cannot be used.

Disclosure of utility model

The utility model aims to solve the technical problems and provide an anti-vibration open waveguide antenna.

In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:

An anti-vibration open waveguide antenna comprises a mounting bottom plate and an open waveguide fixedly mounted on the mounting bottom plate, wherein a coaxial connector is mounted on one side of the open waveguide; the coaxial connector is internally provided with a mandrel conductor used for transmitting radio frequency signals, and the mandrel conductor extends into the inner cavity of the open waveguide; one side of the fixed block is provided with a fixed hole, and the end part of the core shaft conductor is clamped in the fixed hole of the fixed block.

Further, the cross section of the open waveguide is of a rectangular structure.

Further, a plurality of open waveguides are arranged on the mounting bottom plate, the open waveguides are arranged in a row, the side faces of the narrow sides of the open waveguides are arranged in a flush mode, and the coaxial connector is mounted on the side wall of the narrow side of the open waveguides.

Further, the mandrel conductor in the coaxial connector is provided with a first straight line section and a second straight line section which are integrally formed, the first straight line section and the second straight line section are vertically arranged, the first straight line section is vertical to the side wall of the narrow side of the coaxial connector, the end part of the second straight line section is inserted and clamped in the fixing hole of the fixing block, and the second straight line section is located on the central line of the mandrel conductor.

Further, the fixed block comprises an integrally formed mounting block and a connecting block, the mounting block and the connecting block are vertically arranged to form an L-shaped structure, the appearance of the mounting block is consistent with the outline of the bottom of the inner cavity of the open waveguide and is fixedly arranged at the bottom of the open waveguide, the connecting block is attached to the side wall of one side of the broadside of the inner cavity of the open waveguide, and the fixing hole is positioned on the connecting block.

Furthermore, the fixing block is made of polytetrafluoroethylene materials.

Further, a groove matched with the shape of the open waveguide is formed in the mounting bottom plate, and the bottom of the open waveguide is located in the groove.

The anti-vibration open waveguide antenna provided by the utility model has the following beneficial effects: the fixing block is arranged in the open waveguide, the mandrel conductor is clamped on the fixing block, and the end part of the mandrel conductor is supported and limited through the fixing block, so that the mandrel conductor is prevented from being in a suspended state, the position of the mandrel conductor is kept stable in a vibration state, the damage of an antenna is reduced, and the reliability of the antenna is improved; the antenna adopts an open waveguide mode, and has the advantages of simple structure, convenient installation, lower manufacturing cost and compact structure; the feeding is performed from the side edge of the waveguide, and the installation problem when the space between antennas is insufficient and the coaxial line is perpendicular to the broad side of the waveguide is solved.

Drawings

The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings:

Fig. 1 is a schematic perspective view of an anti-vibration open waveguide antenna according to the present utility model;

Fig. 2 is a schematic diagram of a perspective structure of an anti-vibration open waveguide antenna according to the present utility model;

Fig. 3 is a schematic top view of an anti-vibration open waveguide antenna according to the present utility model;

fig. 4 is a schematic bottom cross-sectional view of an anti-vibration open waveguide antenna according to the present utility model.

The reference numerals in the figures illustrate: 1. a mounting base plate; 11. a groove; 2. an open waveguide; 3. a coaxial connector; 31. a mandrel conductor; 32. a first straight line segment; 33. a second straight line segment; 4. a fixed block; 41. a fixing hole; 42. a mounting block; 43. and (5) connecting a block.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The following description of the technical solutions in the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up-down-left-right-front-rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship between the components, the motion condition, etc. in a specific posture (as shown in the drawings), if the specific posture is changed, the directional indicators are correspondingly changed, and the connection may be a direct connection or an indirect connection.

As shown in fig. 1 to 4, an anti-vibration open waveguide antenna comprises a mounting base plate 1 and an open waveguide 2 fixedly mounted on the mounting base plate 1, wherein a coaxial connector 3 is mounted on one side of the open waveguide 2; the open waveguide 2 is provided with an open inner cavity, a fixed block 4 is arranged in the inner cavity, the fixed block 4 is fixedly connected with the open waveguide 2, a mandrel conductor 31 for transmitting radio frequency signals is arranged in the coaxial connector 3, and the mandrel conductor 31 extends into the inner cavity of the open waveguide 2; a fixing hole 41 is formed in one side of the fixing block 4, and an end portion of the mandrel conductor 31 is clamped in the fixing hole 41 of the fixing block 4.

Through set up fixed block 4 in opening waveguide 2 to with dabber conductor 31 joint on fixed block 4, support spacingly to the tip of dabber conductor 31 through fixed block 4, thereby avoid dabber conductor 31 to be in unsettled state, thereby make dabber conductor 31 position keep stable under the vibrations state, reduce the antenna damage, improve antenna reliability.

Specifically, the cross section of the open waveguide 2 is rectangular. The rectangular opening waveguide 2 has simple structure, convenient installation and lower manufacturing cost

Specifically, the mounting base plate 1 is provided with a plurality of open waveguides 2, the plurality of open waveguides 2 are arranged in a row, the side surfaces of the narrow sides of the plurality of open waveguides 2 are arranged in a flush manner, and the coaxial connector 3 is mounted on the side wall of the narrow side of the open waveguide 2. The plurality of open waveguides 2 are arranged in rows, so that the signal emission effect is improved; in order to make it more compact, the gap between adjacent open waveguides 2 is reduced, and in order to facilitate the installation of the coaxial connector 3, the coaxial connector 3 is installed on the narrow side, thereby facilitating the installation, so that the open waveguide 2 arrangement is more compact.

Specifically, the mandrel conductor 31 in the coaxial connector 3 has a first straight line segment 32 and a second straight line segment 33 that are integrally formed, the first straight line segment 32 and the second straight line segment 33 are vertically arranged, the first straight line segment 32 is perpendicular to a side wall of a narrow side of the coaxial connector 3, an end portion of the second straight line segment 33 is inserted and clamped in a fixing hole 41 of the fixing block 4, and the second straight line segment 33 is located on a center line of the mandrel conductor 31. Because the electric field in the rectangular waveguide is perpendicular to the broadside of the rectangular waveguide, and because the electromagnetic wave is excited from the port of the coaxial connector 3, the longitudinal current along the direction of the inner mandrel conductor 31 is arranged on the inner mandrel conductor 31, and finally the longitudinal current is guided to be perpendicular to the broadside of the waveguide; therefore, when the coaxial inner conductor enters a certain length from the side surface, 90-degree bending deformation is carried out, and finally the central line of the inner conductor is perpendicular to the direction of the wide side of the waveguide.

Specifically, the fixing block 4 includes an integrally formed mounting block 42 and a connecting block 43, the mounting block 42 and the connecting block 43 are vertically arranged to form an L-shaped structure, the shape of the mounting block 42 is consistent with the bottom contour of the cavity of the open waveguide 2 and is fixedly mounted at the bottom of the open waveguide 2, the connecting block 43 is attached to the side wall of the broadside side of the cavity of the open waveguide 2, and the fixing hole 41 is located on the connecting block 43. The fixed block 4 comprises a mounting block 42 and a connecting block 43, the connecting block 43 is located on one side of the first straight line segment 32 to avoid the first straight line segment 32, and the mounting block 42 is consistent with the outline of the inner cavity of the open waveguide 2, so that the mounting block 42 has a large mounting contact area, the stability of the fixed block 4 after being mounted is improved, and the supporting stability of the mandrel conductor 31 is further improved.

Specifically, the fixing block 4 is made of polytetrafluoroethylene material. Polytetrafluoroethylene is an insulating material, and has a low dielectric constant, so that signal attenuation and distortion in signal transmission are reduced, and influence on antenna signals is reduced. The fixed block 4 is fixedly connected with the open waveguide 2 through bolts.

Specifically, the mounting base plate 1 is provided with a groove 11 matched with the shape of the open waveguide 2, and the bottom of the open waveguide 2 is located in the groove 11. In the mounting process, the open waveguide 2 is placed in the groove 11 to complete positioning, so that positioning and mounting are facilitated.

The technical scheme does not relate to the fact that the technical scheme can be achieved through the prior art.

The foregoing has outlined and described the basic principles, main features and features of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. An anti-vibration open waveguide antenna, characterized in that: the coaxial connector comprises a mounting bottom plate (1) and an open waveguide (2) fixedly mounted on the mounting bottom plate (1), wherein a coaxial connector (3) is mounted on one side of the open waveguide (2); the coaxial connector is characterized in that the open waveguide (2) is provided with an open inner cavity, a fixed block (4) is arranged in the inner cavity, the fixed block (4) is fixedly connected with the open waveguide (2), a core shaft conductor (31) for transmitting radio frequency signals is arranged in the coaxial connector (3), and the core shaft conductor (31) extends into the inner cavity of the open waveguide (2); one side of the fixed block (4) is provided with a fixed hole (41), and the end part of the core shaft conductor (31) is clamped in the fixed hole (41) of the fixed block (4).

2. An anti-vibration open waveguide antenna according to claim 1, wherein: the cross section of the open waveguide (2) is of a rectangular structure.

3. An anti-vibration open waveguide antenna according to claim 1, wherein: the mounting baseplate (1) is provided with a plurality of open waveguides (2), the open waveguides (2) are arranged in a row, the side faces of the narrow sides of the open waveguides (2) are arranged in a flush mode, and the coaxial connector (3) is mounted on the side wall of the narrow sides of the open waveguides (2).

4. A shock resistant open waveguide antenna according to claim 3, wherein: the mandrel conductor (31) in the coaxial connector (3) is provided with a first straight line segment (32) and a second straight line segment (33) which are integrally formed, the first straight line segment (32) and the second straight line segment (33) are vertically arranged, the first straight line segment (32) is perpendicular to the side wall of the narrow side of the coaxial connector (3), the end part of the second straight line segment (33) is inserted and clamped in a fixing hole (41) of the fixing block (4), and the second straight line segment (33) is located on the central line of the mandrel conductor (31).

5. An anti-vibration open waveguide antenna according to claim 4, wherein: the fixed block (4) comprises an integrally formed mounting block (42) and a connecting block (43), the mounting block (42) and the connecting block (43) are vertically arranged to form an L-shaped structure, the appearance of the mounting block (42) is consistent with the outline of the bottom of the inner cavity of the open waveguide (2) and is fixedly arranged at the bottom of the open waveguide (2), the connecting block (43) is attached to the side wall of one side of the broadside of the inner cavity of the open waveguide (2), and the fixing hole (41) is formed in the connecting block (43).

6. An anti-vibration open waveguide antenna according to claim 1, wherein: the fixing block (4) is made of polytetrafluoroethylene materials.

7. An anti-vibration open waveguide antenna according to claim 1, wherein: the mounting bottom plate (1) is provided with a groove (11) matched with the shape of the open waveguide (2), and the bottom of the open waveguide (2) is positioned in the groove (11).