CN220628233U

CN220628233U - Horn antenna

Info

Publication number: CN220628233U
Application number: CN202322388966.4U
Authority: CN
Inventors: 曹军; 杨洁; 韦清
Original assignee: Hefei Chuangwei Microwave Device Design Co ltd
Current assignee: Hefei Chuangwei Microwave Device Design Co ltd
Priority date: 2023-09-04
Filing date: 2023-09-04
Publication date: 2024-03-19
Anticipated expiration: 2033-09-04

Abstract

The utility model discloses a horn antenna, which comprises a mounting and fixing flange, wherein a rectangular boss is arranged on the mounting and fixing flange, a horn body is fixedly connected to the rectangular boss, a straight barrel section is arranged at the lower end of the horn body, the lower end of the straight barrel section is fixedly connected to the rectangular boss, the horn body comprises two oppositely arranged first side plates and two oppositely arranged second side plates, the width of the first side plates is larger than that of the second side plates, and ridge plates are respectively arranged on the inner side walls of the two first side plates; the ridge plate and one side, which is corresponding to the first side plate and is far away from the first side plate, are of a protruding arc ridge line structure, and a gap is formed between the ridge plates on the two first side plates. According to the utility model, the ridge plate is arranged on the inner side of the loudspeaker body, and the ridge waveguide is formed by the ridge line on the back of the ridge plate, so that the cut-off frequency of main mode transmission is reduced, and the purpose of widening the frequency band is achieved.

Description

Horn antenna

Technical Field

The utility model relates to the technical field of radar antennas, in particular to a horn antenna.

Background

Horn antennas are planar antennas, and microwave antennas with a circular or rectangular cross section, in which the waveguide ends are gradually opened, are the most widely used types of microwave antennas. Its radiation field is determined by the size of the mouth surface of the horn and the propagation type. Its advantages are simple structure, wide band, high power capacity, high gain and reasonable size of horn. 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.

The existing horn antenna is of a rectangular horn structure, is single in structure and limited in frequency band width, and needs to be further optimized to widen the frequency band.

Disclosure of Invention

The utility model aims to solve the technical problems and provide a horn antenna which achieves the effect of widening the frequency band.

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

the horn antenna comprises a mounting and fixing flange, wherein a rectangular boss is arranged on the mounting and fixing flange, a horn body is fixedly connected to the rectangular boss, the section of the horn body is of a rectangular structure, a straight barrel section is arranged at the lower end of the horn body, and the appearance of the straight barrel section is consistent with the outer contour of the rectangular boss; the lower end of the straight barrel section is fixedly connected to the rectangular boss, the horn body comprises two oppositely arranged first side plates and two oppositely arranged second side plates, the width of each first side plate is larger than that of each second side plate, and ridge plates are respectively arranged on the inner side walls of the two first side plates; the ridge plate and one side, which is corresponding to the first side plate and is far away from the first side plate, are of a protruding arc ridge line structure, and a gap is formed between the ridge plates on the two first side plates.

A double-ridge horn antenna is formed by adding two ridge plate structures between the waveguide part and the horn flaring part; the waveguide section is divided into a rear cavity and a ridge waveguide, the rear cavity can filter out excited high-order modes in the waveguide, and the ridge waveguide reduces the cut-off frequency of main mode transmission, so that the purpose of widening the frequency band is achieved.

Furthermore, the appearance of installation mounting flange is circular structure, the connecting hole of installing usefulness has been seted up on the installation mounting flange.

Further, the ridge plate is attached to the first side plate near one side of the first side plate, the upper end of the ridge plate extends to be flush with the upper end face of the first side plate along the surface of the first side plate, and the lower end of the ridge plate extends to be flush with the lower end face of the first side plate along the surface of the first side plate.

Further, the loudspeaker body is of an integral structure, and the ridge plate is fixedly arranged on the first side plate through bolts.

Further, an adapter for signal transmitting connection is arranged on the side wall of the straight barrel section.

The horn antenna provided by the utility model has the following beneficial effects: the ridge waveguide is formed by the ridge line at the back of the ridge plate, so that the cut-off frequency of main mode transmission is reduced, and the purpose of widening the frequency band is achieved; the spine plate and the loudspeaker body split type structure can be independently manufactured, so that the precision of an arc spine line on the spine plate is higher, the processing cost is reduced, and the performance of the loudspeaker antenna is improved.

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 a horn antenna according to the present utility model;

fig. 2 is a schematic diagram of a three-dimensional structure of a horn antenna according to the present utility model;

fig. 3 is a schematic front view of a horn antenna according to the present utility model;

fig. 4 is a schematic top view of a horn antenna according to the present utility model;

fig. 5 is a schematic side view of a horn antenna according to the present utility model.

The reference numerals in the figures illustrate: 1. installing a fixed flange; 11. rectangular bosses; 12. a connection hole; 2. a horn body; 21. a straight barrel section; 22. a first side plate; 23. a second side plate; 3. a spine panel; 4. an adapter.

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

As shown in fig. 1-5, a horn antenna comprises a mounting and fixing flange 1, wherein a rectangular boss 11 is arranged on the mounting and fixing flange 1, a horn body 2 is fixedly connected to the rectangular boss 11, the section of the horn body 2 is of a rectangular structure, a straight barrel section 21 is arranged at the lower end of the horn body 2, and the shape of the straight barrel section 21 is consistent with the outline of the rectangular boss 11; the lower end of the straight barrel section 21 is fixedly connected to the rectangular boss 11, the horn body 2 comprises two oppositely arranged first side plates 22 and two oppositely arranged second side plates 23, the width of the first side plates 22 is larger than that of the second side plates 23, and the inner side walls of the two first side plates 22 are respectively provided with a ridge plate 3; the side, away from the first side plate 22, of the ridge plate 3 corresponding to the first side plate 22 is of a protruding arc ridge line structure, and a gap is formed between the ridge plates 3 on the two first side plates 22.

A double-ridge horn antenna is formed by adding two ridge plate 3 structures between the waveguide part and the horn flaring part; the waveguide section is divided into a rear cavity and a ridge waveguide, the rear cavity can filter out excited high-order modes in the waveguide, and the ridge waveguide reduces the cut-off frequency of main mode transmission, so that the purpose of widening the frequency band is achieved.

The installation fixing flange 1 has a circular shape, and the installation fixing flange 1 is provided with a connection hole 12 for installation for the convenience of installation.

One side, close to the first side plate 22, of the ridge plate 3 is attached to the first side plate 22, the upper end of the ridge plate 3 extends along the surface of the first side plate 22 to be flush with the upper end face of the first side plate 22, and the lower end of the ridge plate 3 extends along the surface of the first side plate 22 to be flush with the lower end face of the first side plate 22.

The loudspeaker body 2 is of an integral structure, and the ridge plate 3 is fixedly arranged on the first side plate 22 through bolts. The loudspeaker body 2 forms an integral structure through machining, and guarantee dimensional accuracy is high, and backbone plate 3 and loudspeaker body 2 are mutually independent split type structure, through bolted connection, backbone plate 3 can alone make, and the quality of horn antenna performance is relevant with the backbone line, so does the backbone line on backbone plate 3 alone, can make the arc backbone line precision on backbone plate 3 higher, and the same processing cost has reduced, has improved horn antenna's performance.

In particular, the side wall of the straight section 21 is provided with an adapter 4 for signal transmission connection. Radio frequency signals are connected through the adapter 4, so that wiring is 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

1. A horn antenna, characterized by: the loudspeaker comprises a mounting and fixing flange (1), wherein a rectangular boss (11) is arranged on the mounting and fixing flange (1), a loudspeaker body (2) is fixedly connected to the rectangular boss (11), the section of the loudspeaker body (2) is of a rectangular structure, a straight barrel section (21) is arranged at the lower end of the loudspeaker body (2), and the appearance of the straight barrel section (21) is consistent with the outline of the rectangular boss (11); the lower end of the straight cylinder section (21) is fixedly connected to the rectangular boss (11), the loudspeaker body (2) comprises two oppositely arranged first side plates (22) and two oppositely arranged second side plates (23), the width of the first side plates (22) is larger than that of the second side plates (23), and ridge plates (3) are respectively arranged on the inner side walls of the two first side plates (22); one side, away from the first side plate (22), of the ridge plate (3) corresponding to the first side plate (22) is of a protruding arc ridge line structure, and a gap is formed between the ridge plates (3) on the two first side plates (22).

2. A feedhorn according to claim 1, characterised in that: the appearance of installation mounting flange (1) is circular structure, set up connecting hole (12) of usefulness of installation on the installation mounting flange (1).

3. A feedhorn according to claim 1, characterised in that: one side, close to the first side plate (22), of the ridge plate (3) is attached to the first side plate (22), the upper end of the ridge plate (3) extends to be flush with the upper end face of the first side plate (22) along the surface of the first side plate (22), and the lower end of the ridge plate (3) extends to be flush with the lower end face of the first side plate (22) along the surface of the first side plate (22).

4. A feedhorn according to claim 3, characterised in that: the loudspeaker body (2) is of an integral structure, and the ridge plate (3) is fixedly arranged on the first side plate (22) through bolts.

5. A feedhorn according to claim 1, characterised in that: an adapter (4) for signal transmission connection is arranged on the side wall of the straight cylinder section (21).