KR101992605B1 - Available horn antenna in various frequency - Google Patents

Abstract

The present invention relates to a horn antenna that can be used in various frequency bands. The horn antenna includes a waveguide different in size according to a range of frequency bands, four plates connected to the waveguide and having a rectangular cross section, And a feeding part attached to the outside of one side of the waveguide to transmit and receive a signal, wherein concave and convex coupling parts are formed at both side edges of the plate, By fitting the concave and convex portions of the coupling portions, it is possible to manufacture the antenna easily and at low cost with a simple structure, and the antenna can be made compact and lightweight while maintaining or improving the performance of the antenna.

Description

[0001] The present invention relates to a horn antenna for use in various frequency bands,

The present invention relates to a horn antenna that can be used in various frequency bands, and more specifically, to a horn antenna that is simple in structure and easy to manufacture, can be manufactured at low cost, and can be made compact and lightweight while maintaining or improving the performance of the antenna To the horn antenna.

In general, a horn antenna is a kind of an opening-and-and-landing antenna that allows a radio wave to be radiated into a space by truncating the tip of a waveguide (a tubular conductor having an empty center) A conic horn antenna, a sectoral horn antenna in which the two opposite sides of the horn are parallel and the other two sides are diffused, a pyramidal horn antenna in which the side of the horn is a pyramidal cone like pyramidal horn antenna, And a horn reflector antenna for obtaining low directivity.

Such a horn antenna improves the directivity by using the principle of optics and the principle that the megaphone concentrates the sound waves. The tip of the waveguide is formed by a horn-shaped horn, and both sides of the waveguide are opened. So that electromagnetic waves move through the waveguide and are radiated into the air.

These horn antennas are made of metal so as to be able to transmit electromagnetic waves. In order to distribute the signals at an accurate ratio, it is necessary to apply precise metal processing. Therefore, the horn antennas are complicated, There was a problem.

Korean Patent Publication No. 10-2010-0049955 (2010.05.13)

It is an object of the present invention to provide a horn antenna capable of reducing the manufacturing error of a process and being manufactured at low cost because the structure is simple and the manufacturing process is simple and easy.

In order to achieve the above object, according to an aspect of the present invention, there is provided a waveguide which is different in size according to a range of a frequency band, a waveguide connected to the waveguide, and coupled with four plates having a rectangular cross- And the horn has a concavo-convex shape at both side edges of the plate so that the horn can be assembled by engaging the concave and convex portions of the adjacent engaging portions with each other. An antenna is provided.

Each of the plates has a trapezoidal shape, and the plate can be extended at a predetermined ratio from the waveguide to the opening of the horn.

The concave portion and the convex portion are formed so as to intersect with each other when the concave and convex portions are formed so that the concave and convex portions of the adjacent concave and convex portions can be assembled, Is formed in the same plane as the outer surface of the adjacent plate.

Further, the waveguide or the horn of the present invention may be made of aluminum.

On the other hand, the connection portion between the waveguide and the horn can be connected by laser welding, and the horn can be manufactured by assembling the irregularities between adjacent engaging portions and connecting the irregularities by laser welding.

Further, the horn antenna of the present invention may further include a power feeder attached to the outside of one side of the waveguide to transmit and receive a signal.

As described above, according to the present invention, since the corner portion of the horn antenna is formed in a concavo-convex structure so as to be assembled, the manufacturing process is simple and easy because of its simple structure, Can be produced.

Further, there is an effect that the size and weight of the antenna can be reduced while maintaining or improving the performance of the antenna.

1 is an overall perspective view illustrating a horn antenna according to an embodiment of the present invention.
Fig. 2 is a front view showing the horn antenna of Fig. 1. Fig.
3 is a side view of the horn antenna of FIG.
4 is a bottom view of the horn antenna of Fig.
5 is a partially exploded perspective view illustrating a method of manufacturing a horn antenna according to the present invention, in which the first plate and the second plate of the horn are exploded.
6 is a front view showing a horn antenna according to another embodiment of the present invention.
7 is a side view of the horn antenna of Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. It is provided to let you know.

1 is a front view showing a horn antenna of FIG. 1, FIG. 3 is a side view showing a horn antenna of FIG. 1, and FIG. 4 is a cross- Is a bottom view showing the horn antenna of Fig.

The horn antenna according to the present embodiment may include a waveguide 10 and a horn 20 connected to the waveguide 10.

In the present invention, the waveguide 10 and / or the horn 20 may be made of aluminum, and the waveguide 10 is designed such that the longitudinal and transverse cross-sectional shapes are rectangular, . However, the waveguide 10 is set to be a rectangular parallelepiped waveguide 10, but the present invention is not limited to this, and the size may vary depending on the frequency band.

For example, when the frequency band is divided into five ranges of 1.12 to 1.80 GHz, 1.80 to 2.60 GHz, 2.60 to 3.95 GHz, 3.95 to 5.85 GHz, and 5.85 to 8.20 GHz within a range of 1 to 8 GHz, (See Figs. 6 and 7).

In addition, although embodiments have been described for the frequency bands, the present invention is not limited to the frequency bands, but can be implemented for various frequency bands.

In this embodiment, the waveguide model corresponding to the upper frequency is used as the size of the waveguide 10, but the output width can be set to the intermediate frequency of the upper frequency, and the remaining physical size excluding the output width is the inner width of the standard waveguide And the height (L5 in FIG. 6) and the thickness of the waveguide 10, the length of the waveguide 10 may be the length of the cut-off wavelength. The waveguide 10 may have an inner width of 82.55 mm, 22.15 mm, or the like, or an inner length of 47.55 mm or the like.

6 and 7) for transmitting and receiving signals, and a cover 30 may be provided on the upper surface of the waveguide 10.

The horn 20 may be designed according to the designed waveguide 10. One end of the horn 20 is connected to the waveguide 10 and the connection portion between the waveguide 10 and the horn 20 can be connected by laser welding. The outer surface of the lower end of the waveguide 10 connected to the welded portion 12 may be formed in a sloped shape or an inclined portion 14.

The horn 20 is formed by joining four plates 22 and 24 so as to have a rectangular cross section and has a horn in which an opening 21 is formed at the other end and a cross- So that the electromagnetic wave transmitted from the waveguide 10 can be transmitted in a predetermined external direction or the external electromagnetic wave can flow into the waveguide.

Electromagnetic waves traveling along the waveguide 10 to be emitted or introduced may be scattered in various directions as they pass through the horn 20. Therefore, even when the horn 20 is set in the dispensing direction aiming at the opening 21, the electromagnetic waves passing through the horn 20 can travel in various directions, and only a part of the electromagnetic waves reach the receiver in the desired dispensing direction can do. Here, the degree to which an electromagnetic wave can be transmitted in a target direction can be regarded as an antenna gain.

In the horn 20 of this embodiment, as shown in FIGS. 2 to 4, all of the four plates 22 and 24 are formed to have a trapezoidal shape. Therefore, the waveguide 10 can be formed into a horn shape extending from the waveguide 10 to the opening 21 of the horn 20 at a predetermined ratio. Here, the two pairs of plates 22 and 24 can be assembled in the form of a horn by the engaging portions 22a and 24a which are fitted to each other at the four corner edges.

The cover 30 can be tightly fixed to the upper end of the waveguide 10. A plurality of fastening means 32 penetrating the edge of the cover 30 can be coupled to the hole at the upper end of the waveguide 10 to provide the cover 30 to the waveguide 10. The fastening means 32 may include, but is not limited to, screws or nails.

FIG. 5 is an exploded perspective view illustrating a method of manufacturing a horn antenna according to the present invention, in which the first plate and the second plate of the horn are exploded.

5, in the horn antenna according to the present embodiment, concave-and-convex coupling portions 22a and 24a are formed at both side edges of two plates 22 and 24 of different sizes, The horn 20 can be assembled by engaging the concave and convex portions of the adjacent engaging portions 22a and 24a.

Here, the engaging portions 22a and 24a of the plate assembled adjacent to each other are formed by crossing the concave portion and the convex portion in forming the concave and the convex portions so that the adjacent engaging portions 22a and 24a ), It is possible to assemble it.

For example, when the engaging portion 22a of the first plate 22 and the engaging portion 24a of the second plate 24 are viewed, the engaging portion 22a of the first plate 22 is engaged with the position of the concave portion of the first plate 22 The engaging portion 24a of the second plate 24 is formed with a convex portion so that the horn 20 can be assembled by engaging the concave and convex portions of the adjacent engaging portions 22a and 24a, ) Can be manufactured simply and easily, so that it is possible to provide a horn antenna which can reduce the manufacturing error of the process and can be manufactured at a low cost.

Also, in the present invention, in forming the concave and convex portions of the engaging portions 22a and 24a of the plate, the protruding faces of the convex portions may be formed to be flush with the outer faces of the adjacent plates.

That is, when the engaging portion 22a of the first plate 22 and the engaging portion 24a of the second plate 24 are engaged with each other, the convex portion of the first plate 22, And the protruding surface of the convex portion of the second plate 24 is formed to be flush with the outer surface of the first plate 22, The coupled surfaces of the concavities and convexities can be connected smoothly by one surface.

Therefore, the assembling process can be simplified by assembling the four plates by using the unevenness, and the joining portion due to the unevenness can be smoothly formed without ruggedly protruding, so that the finished horn 20 can be completed.

As described above, the horn 20 can be manufactured by joining the joining portions assembled with the irregularities of the engaging portions 22a and 24a adjacent to each other by laser welding, by using the irregularities.

In this case, since the concave and convex portions of the engaging portions 22a and 24a are not formed unevenly and are connected smoothly by one surface, the welding is easy and the occurrence of errors in the manufacturing process is reduced, It is possible to produce an antenna.

6 is a front view showing a horn antenna according to another embodiment of the present invention. 7 is a side view of the horn antenna of Fig.

As shown in FIGS. 6 and 7, the horn antenna according to another embodiment of the present invention may be manufactured to have different sizes according to a target frequency. Design specifications for the horn antenna according to this embodiment are shown in Table 1 below.

L2 is the height of the horn 20, L3 is the length of the opening of the horn 20, L4 is the width of the opening of the horn, L5 is the height of the horn 20, L6 is a planar width of waveguide 10 or cover 30 and L8 is a planar width of waveguide 10 or cover 30. L8 is a waveguide 10 located on the opposite side of the horn 10, L9 denotes a height or an interval from the distal end of the waveguide 10 to the feeding part 40 and t1 denotes a height or a width of the feeding part 40 from the distal end of the waveguide 10 to the feeding part 40. [ Represents the thickness of the plate 42, respectively.

The thickness of each plate of the horn 20, the waveguide 10, and the cover 30 may be 5.0 mm to 3.0 mm. The thickness of the waveguide 10 may be thicker than the thickness of the plate of the horn for engagement with the cover. For example, when the thickness of each plate of the horn is 5.0 mm, the thickness of the plate of the waveguide 10 may be 5.53 mm. However, the inclined portion 14 and the welded portion 12 of the waveguide 10 may be excluded.

In the above design specifications, the height may correspond to the length when the frontal direction of the horn antenna is set differently, and similarly, the term length, width, height, etc. may be replaced by other terms such as height, .

According to this embodiment, one, two, or four plates constituting the horn can be easily manufactured by using an aluminum original plate of a predetermined size, and a plate having the coupling portions on both sides thereof is assembled by effectively fabricating the horn . Further, it is possible to efficiently manufacture the horn antenna by using such a horn.

On the other hand, in the manufacture of the horn antenna, since the horn antenna can be manufactured and circulated without installing the feeder 40, the horn antenna that does not include the feeder is also within the scope of the present invention.

It is to be understood that the invention is not limited to the disclosed embodiment, but is capable of many modifications and variations within the scope of the appended claims. It is self-evident.

10: Waveguide 20: Horn
22: first plate 22a:
24: second plate 24a:

Claims (7)

A waveguide adapted to vary in size according to a range of frequency bands;
A horn connected to the lower end or one end of the waveguide and having a shape in which four plates are joined to each other so as to have a rectangular cross section and the cross section is gradually widened in the open direction; And
A cover coupled to the upper end or the other end of the waveguide;
, ≪ / RTI &
Each of the four plates is made of an aluminum material and has a trapezoidal shape, and has concave portions and convex portions repeated at equal lengths on both side edges thereof,
Wherein the four plates are joined by welding so that the engaging portions adjacent to each other at both side edges of the four plates are concave and convex so that the inner cross sectional area of the horn extends from the waveguide to the opening of the horn at a constant ratio,
Wherein the coupling surfaces of the concave portions and the convex portions of the adjacent coupling portions are formed to be flush with the outer surfaces of the adjacent two plates having the coupling portions adjacent to each other.
delete delete The method according to claim 1,
Wherein the waveguide is made of aluminum.
The method according to claim 1,
Wherein a connection portion between the waveguide and the horn is connected by laser welding and has an inclined outer surface or an inclined portion.
The method according to claim 1,
Wherein the horn is manufactured by assembling the concavities and the protrusions between the adjacent engaging portions of the four plates to each other, and then joining the concavities and convexities by laser welding.
The method according to claim 1,
Further comprising a feeder attached to one side of the waveguide to transmit and receive a signal.

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