KR20080071953A - Horn array type antenna for dual linear polarization - Google Patents

Abstract

A horn array type antenna for dual linear polarization is provided to reduce a height of the antenna by forming a pair of protrusions protruded inward in a tapered part of a horn. In a horn array type antenna for dual linear polarization, first and second polarizations are incident on a plurality of horns. A plurality of polarization filtering units(20) are installed in the plurality of horns respectively to separate the incident first and second polarizations. A first polarization guide guides the first polarizations separated in the polarization filtering units. A second polarization guide guides the second polarizations separated in the polarization filtering units. Each of the horns has a square outer opening, a square inner opening opened toward the polarization filtering unit, and a rectangular ring-shaped protrusion(17) protruded toward a center region by a predetermined width along a circumference of the inner opening. Directions of sides of the outer opening are parallel with the directions of sides of the inner opening. An upper part of the polarization filtering unit is square box-shaped, and a lower part thereof is rectangular box-shaped. The second polarizations are transmitted to the second polarization guide through the lower part of the polarization filtering unit. The first polarizations are transmitted to the first polarization guide through a passage(27) on one of four walls formed at the upper part of the polarization filtering unit.

Description

Dual linearly polarized horn array antenna {HORN ARRAY TYPE ANTENNA FOR DUAL LINEAR POLARIZATION}

The present invention relates to a dual linearly polarized horn array antenna, and more particularly, to a dual linearly polarized horn array antenna capable of improving the performance of the antenna and reducing the size of the antenna.

Waves above the microwave have very short wavelengths and are very similar in nature to light. In order to efficiently receive and transmit waves beyond the microwave band, an antenna having improved directivity by using the principle of optical and the principle of focusing sound waves by a megaphone has been manufactured and used. Such antennas include a horn antenna, a parabolic antenna, a radio wave lens antenna, and a slot antenna having a hole directly formed in the waveguide.

Of these, the horn antenna forms the tip of the waveguide in the shape of a trumpet, opens both sides of the waveguide, and vibrates one side of the waveguide to allow radio waves to move through the waveguide and radiate into the air. At this time, since part of the radio waves is reflected because impedance matching between the waveguide and the air is not performed, all energy is not emitted to the air. Therefore, in the design of the horn antenna, the opening of the waveguide is gradually widened to match the impedance between the air and the waveguide, so that as much energy as possible is radiated from the opening.

1 is a cross-sectional view of a horn of a general horn antenna.

As shown, the horn antenna has an outer opening 2 facing the air and an inner opening 3 on the side where the vibration starts. This horn antenna, the area of the outer opening 3 determines the performance of the antenna, the larger the area of the outer opening 3, the better the performance of the antenna. In addition, the area ratio S ₂ / S ₁ between the outer opening 2 and the inner opening 3 also affects the performance of the antenna, and the area ratio S ₂ / of the outer opening 2 and the inner opening 3. S ₁ ), that is, the area difference between the outer opening 2 and the inner opening 3 and its inclination are important factors. As a result, the length of the horn becomes longer, and as the length of the horn becomes longer, the size of the antenna as a whole becomes larger.

On the other hand, according to the development of communication technology and the trend of miniaturization of communication devices, miniaturizing the size of the antenna has been an issue of antenna design.

Accordingly, there is a need for a method capable of improving the performance of the antenna and miniaturizing the size of the antenna while maintaining at least the performance of the antenna.

It is therefore an object of the present invention to provide a dual linearly polarized horn array antenna capable of improving the performance of the antenna and minimizing the size of the antenna.

The configuration of the present invention for achieving this object, at least one protrusion protruding toward the central region of the inner opening in the horn portion formed to taper along the traveling direction of the electromagnetic wave, and the inner opening formed in the narrow end of the horn portion A horn having a jaw and guiding electromagnetic waves entering or exiting the horn; A first polarization guide connected to the horn and guiding a first polarization; And a second polarization guide connected to the horn and arranged in parallel with the first polarization guide to guide the second polarization having a direction perpendicular to the first polarization.

The horn may further include a polarization filtering unit connecting the inner opening having the protruding jaw and the first polarization guide.

It is preferable that a plurality of steps are formed on one side of the polarization filtering part so that the width of the polarization filtering part becomes narrower toward the first polarization guide side.

An opening for connection with the first polarization guide may be formed in the stepped region of the polarization filtering part.

The protruding jaw is formed along the circumference of the inner opening, and the shape of the inner opening may be determined according to the width of the protruding jaw protruding toward the inner opening.

The inner opening may have a rectangular shape.

The first polarization guide includes: a first waveguide having a pair of openings connected to the pair of horns; A second waveguide having a pair of openings connected to the other pair of horns and disposed in parallel with the first waveguide; The first waveguide may include a first mixing pipe disposed between the first waveguide and the second waveguide to connect the first waveguide and the second waveguide, and having a first main opening through which the first polarization is incident or exited.

Each opening of the first waveguide is connected to the pair of polarization filtering units, and a first protrusion for changing a traveling direction of the first polarization is projected downward on an upper portion of the central region of the first waveguide. It is preferable that the first horizontal membrane protrudes upward from the lower portion of the first protrusion to separate or couple the first polarized wave.

Each opening of the second waveguide is connected to the other pair of polarization filtering units, and a second protrusion for changing the traveling direction of the second polarization is protruded below the central region of the second waveguide. It is preferable that the second horizontal film protrudes downward from the second protrusion to separate or couple the first polarized wave.

The first and second protrusions may be formed to extend in the longitudinal direction of the first and second waveguides and may be formed of a rectangular parallelepiped protruding into the first and second waveguides.

The first and second horizontal films may have a width corresponding to the horizontal widths of the first and second waveguides in the central region and may be formed to have a predetermined thickness or less.

A first main opening in which the first polarized wave enters or exits is formed in the first mixed pipe; The first mixing tube may further include a first connecting tube connected to the first waveguide and a second connecting tube connected to the second waveguide.

The first connector is connected to the upper portion of the central region of the first waveguide, and preferably bent downward at a predetermined angle toward the first mixing tube.

The second connector is connected to the lower portion of the central region of the second waveguide, it is preferably bent upward at a predetermined angle toward the first mixing tube.

A third horizontal film protruding in the longitudinal direction of the first and second connection pipes may be formed between the first connection pipe and the second connection pipe of the first mixing pipe.

The first mixing pipe may protrude in one region along a longitudinal direction to protrude to the inside of the first mixing pipe to reduce the width of the first mixing pipe.

The second polarization guide may include: a third waveguide connected to a pair of the polarization filtering units to change a traveling direction of the second polarization; A fourth waveguide connected to the other pair of polarization filtering units and disposed in parallel with the third waveguide; And a second mixing tube connecting the third waveguide and the fourth waveguide and having a second main opening through which a second polarization is incident or exited.

Both ends of the third waveguide may be upwardly open to be connected to the polarization filtering part, and a third protrusion may be formed at a portion penetrating through the polarization filtering part to change a traveling direction of the second polarization wave.

A fourth horizontal film may be formed in the central region of the third waveguide, extending by a predetermined width toward the second mixing pipe.

At both ends of the third waveguide, reflective surfaces that are inclined at a predetermined angle may be formed on surfaces facing the third protrusions.

Both end portions of the fourth waveguide may be upwardly open to be connected to the polarization filtering part, and a fourth protrusion may be formed at a portion penetrating through the polarization filtering part to change a traveling direction of the second polarization wave.

A fifth horizontal film may be formed in the central region of the fourth waveguide, extending by a predetermined width toward the second mixing pipe.

At both end portions of the fourth waveguide, reflective surfaces that are inclined at a predetermined angle may be formed on surfaces opposite to the fourth protrusions.

A sixth horizontal film protruding along the longitudinal direction of the third and fourth waveguides may be formed between the third waveguide and the fourth waveguide of the second mixing pipe.

Ribs forming at least two opening surfaces on top of the horn can be formed on top of the horn.

Protruding jaws may be formed on opposite sides of the plurality of steps.

On the other hand, the object has a horn portion which is formed to taper along the traveling direction of the electromagnetic wave, and a protruding jaw protruding toward the central region of the inner opening at the inner opening formed at one end of the narrow width of the horn portion, and incident to the horn portion. Or a first layer having a plurality of horns guiding the emitted electromagnetic waves; A second layer connected to the horn and having a first polarization guide for guiding a first polarization; And a third layer connected to the horn and disposed in parallel with the first polarization guide and configured to guide a second polarization wave having a direction perpendicular to the first polarization guide. It can also be achieved by a linearly polarized horn array antenna.

The first intermediate layer may be disposed between the first layer and the second layer, and may include a first intermediate layer having a polarization filtering unit configured to connect the inner opening with the protruding jaw and the first polarization guide.

It is preferable that a plurality of steps are formed on one side of the polarization filtering part formed in the first intermediate layer so that the width of the polarization filtering part becomes narrower toward the first polarization guide side.

The first polarization guide formed on the second layer includes: a first waveguide having a pair of openings connected to the pair of horns; A second waveguide having a pair of openings connected to the other pair of horns and disposed in parallel with the first waveguide; The first waveguide may include a first mixing pipe disposed between the first waveguide and the second waveguide to connect the first waveguide and the second waveguide, and having a first main opening through which the first polarization is incident or exited.

The polarization filtering part may extend to the second layer to be connected to the opening of the first polarization guide.

On the surface of the first layer facing the first intermediate layer, the first horizontal film formed on the first waveguide to separate or combine the first polarization and the first polarization formed on the second waveguide A second protrusion may be formed to change the direction.

The first intermediate layer may include a first protrusion of the first waveguide for changing the direction of travel of the first polarized wave and a second horizontal film of the second waveguide for separating or coupling the first polarized wave.

The second layer may include: a first connecting pipe connected to an upper portion of the central region of the first waveguide and bent downward at an angle toward the first mixing pipe; A second connecting tube connected to a lower portion of a central region of the second waveguide and bent upward at a predetermined angle toward the first mixing tube; A first mixing pipe disposed between the first connecting pipe and the second connecting pipe and having a first main opening through which a first polarization is incident or exited;

The second polarization guide formed on the third layer may include: a third waveguide connected to a pair of the polarization filtering units to change a traveling direction of the second polarization; A fourth waveguide connected to the other pair of polarization filtering units and disposed in parallel with the third waveguide; And a second mixing tube connecting the third waveguide and the fourth waveguide and having a second main opening through which a second polarization is incident or exited.

Preferably, a second intermediate layer in which the polarization filtering part is formed is disposed between the second layer and the third layer.

According to the present invention, the performance of the antenna can be improved and the size of the antenna can be reduced.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The dual linearly polarized horn array antenna according to the present invention performs all the roles of receiving or transmitting electromagnetic waves, but in the following embodiments, for the sake of convenience of description, the dual linearly polarized horn is based on the role of first receiving the electromagnetic waves. Each component of the array antenna will be described, and the role of transmitting electromagnetic waves will be described later.

On the other hand, according to an embodiment of the present invention, the first polarization is H polarization (Horizontal Polarization) that is parallel to the earth's equator, and the second polarization is V polarization (Vertical Polarization) perpendicular to the earth's equator.

2 is a front side perspective view of the dual linearly polarized horn array antenna according to the present invention, FIG. 3 is a rear side perspective view of the dual linearly polarized horn array antenna of FIG. 2, and FIG. 7 is a dual linearly polarized horn array according to the present invention. Side sectional view of the antenna.

The dual linearly polarized horn array antenna 1 includes a plurality of horns 10 into which electromagnetic waves are incident, a first polarization guide 30 for guiding a first polarization, and a second polarization guide for guiding a second polarization ( 50). Here, four horns 10, the first polarization guide 30 and the second polarization guide 50 form one antenna unit. Hereinafter, the dual linearly polarized horn array antenna 1 will be described based on the antenna unit.

The four horns 10 are open toward the space, and the first polarization guide 30 is formed at the lower portion of the horn 10, and the second polarization guide 50 is formed at the lower portion of the first polarization guide 30. Is formed. Here, the horn 10 and the first and second polarization guides 30 and 50 are spaces in which electromagnetic waves move, and the horn 10 and the first and second polarization guides 30 and 50 are formed in a frame for forming the horn 10 and the first and second polarization guides 30 and 50. The shape will be described later.

4 is a perspective view of a dual linearly polarized horn array antenna according to another embodiment of the present invention, Figure 5 is a transparent perspective view of the dual linearly polarized horn array antenna of Figure 4;

4 and 5, a cross rib 401 is provided on the top of the horn, and four small opening surfaces are formed on the top of the horn. By dividing the top of the horn into several openings in this way, the side lobe of the antenna can be reduced and the radiation efficiency can be increased.

Although the horn illustrated in FIG. 22 is adopted as the horn array antenna according to FIG. 5, a horn or another horn illustrated in FIG. 19 may be employed.

6 is a perspective view of a horn array antenna employing the horn of FIG. 5 according to an embodiment of the present invention. Referring to FIG. 6, sixteen opening surfaces are formed in one antenna unit.

8 is a perspective view of a horn region of the dual linearly polarized horn array antenna of FIG. 2, FIG. 9 is a plan view of the horn, FIGS. 10 and 12 are sectional perspective views of the horn, and FIG. 11 is a front sectional view of the horn.

The horn 10 guides electromagnetic waves so that first and second polarized waves having mutually perpendicular directions are incident on the incident surface. And a part 20.

The horn 15 is formed to be tapered along the traveling direction of the electromagnetic wave, and both ends thereof are opened along the traveling direction of the electromagnetic wave to form the outer opening and the inner opening. The inner opening formed in a rectangular shape at one end of the narrow portion of the horn 15 is formed with a protruding jaw 17 protruding into the central region, the protruding jaw 17 is formed along the circumference of the inner opening. As shown in FIG. 9, the protruding jaw 17 protrudes with a predetermined width along the inner opening, and is formed.

In FIG. 9 according to an embodiment of the present invention, a rectangular opening is formed by protruding by a predetermined width along the inner opening.

13 is a perspective view of a horn according to another embodiment of the present invention, FIG. 14 is a plan view of the horn of FIG. 13, FIG. 15 is a side view of the horn of FIG. 13, FIG. 16 is a sectional perspective view of the horn of FIG. 13, and FIG. 17 is a side of the horn of FIG. 13. It is a cross section. Referring to these figures, the horn in accordance with one embodiment of the present invention has one or more protruding jaws 18a, 18b in the tapered portion of the horn, and has a cross-shaped rib 401 forming four opening surfaces. In addition, the protruding jaw 19 is formed on one side of the polarization filtering unit 20, and the S11 parameter of the vertically polarized wave is further improved.

The present embodiment has two projection jaws and a cross-shaped rib that can form four opening faces. However, this is merely exemplary, and therefore, the number of projection jaws and the number of opening faces can be changed.

18 is a perspective view of a horn according to another embodiment of the present invention. The horn according to Fig. 18 has at least one protruding jaw at the tapered portion of the horn and has a cross rib 401 forming four opening faces.

19 is a simplified side cross-sectional view of a horn in accordance with the present invention, FIG. 20 is a simplified side cross-sectional view of a horn having the same length as the outer opening of the same size as the horn of FIG. 19, and FIG. 21 is a simplified side of the horn having the same performance as the horn of FIG. It is a cross section.

The length of the horn according to the invention and shown in FIG. 20 is 61.0 mm, and the length of the horn shown in FIG. 21 is 71.0 mm. And the width of the outer opening of each horn 10 is equal to 48.0 mm.

The antenna gains of these three horns are compared at the center frequency of 11.7 GHz, 12.75 GHz of the upper band, and 10.7 GH of the lower band of the KU BAND 10.7 GHz to 12.75 GHz. have.

The present invention Figure 20 Figure 21 10.7 GHz 14.8 [dBi] 14.3 [dBi] 14.8 [dBi] 11.7 GHz 15.8 [dBi] 15.1 [dBi] 15.8 [dBi] 12.7 GHz 16.1 [dBi] 15.6 [dBi] 16.1 [dBi]

As can be seen from the experimental results, it can be seen that the horn 10 of the present invention and the horn shown in FIG. 21 exhibit the same performance in all frequency bands. However, the horn of FIG. 20 having the same length and the same size of the outer opening as the horn 10 of the present invention is 0.5 dBi in the 10.7 GHz band, 0.7 dBi in the 11.7 GHz band, and 12.7 as compared to the horn 10 of the present invention. In the GHz band, the antenna gain is as small as 0.5 dBi. In general, when the difference in antenna gain is 1dBi, the performance is improved by 33%. Therefore, the horn 10 of the present invention can be seen that the performance of about 18% is improved compared to the conventional horn of the same size. And the height can be reduced by about 10mm compared to the same horn.

22 is a simplified side cross-sectional view of a horn in accordance with another embodiment of the present invention. Referring to FIG. 22, two pairs of protrusions 18a and 18b protruding inwardly are formed in the tapered portion of the horn. By forming at least one protrusion jaw 18a or 18b as described above, the height of the horn antenna can be reduced if the performance of the horn antenna is maintained or improved almost. The length and size of the horn of FIG. 22 may be different from the length and size of the horn of FIG. 19.

FIG. 23 is a graph showing S11 parameters of the horn of FIG. 19, FIG. 24 is a graph showing S11 parameters of the horn of FIG. 20, and FIG. 25 is a graph showing S11 parameters of the horn of FIG.

The S11 parameter represents the degree to which the electromagnetic waves radiated from the antenna are returned to the antenna. The smaller the value is, the better it is.

As shown, since the horn 10 of the present invention has a S11 parameter of -40 dB or less at 11.6 GHz, the S11 parameter is good. This result is better than the horn of FIG. 20 in which the S11 parameter is -50 dB at 12.2 GHz, and the horn in FIG. 21 which shows the S11 parameter of -30 dB at about 11 GHz.

As such, when the protruding jaw 17 is formed at the inner opening of the horn 15, the length of the horn 15 can be shortened while the width of the inner opening and the width of the outer opening are maintained. The gain in (1) is not reduced.

The polarization filtering unit 20 connected to the inner opening of the horn 15 passes only a specific polarization. The first polarized wave does not pass through the polarization filtering unit 20 and is guided to the first polarization guide 30. The second polarized wave passes through an area having the step 25 of the polarization filtering unit 20 and the second polarization guide. Guided by 50.

FIG. 26 is an enlarged perspective view of the polarization filtering part of FIG. 2. Here, port 1 of the polarization filtering unit 20 is connected to the horn 10, port 2 is connected to the first polarization guide 30, and port 3 is connected to the second polarization guide 50.

The polarization filtering unit 20 extends from the inner opening to the second polarization guide 50, and a plurality of steps 25 are formed in a step shape on one side of the polarization filtering unit 20 for a predetermined period from the inner opening. . Due to the step 25, the width of the polarization filtering unit 20 is narrowed in one direction, and the first and second polarizations passing through the polarization filtering unit 20 are separated, and the first polarization guide 30 is respectively. And a second polarization guide 50. The first polarization having the same electric field direction as the wide width of the polarization filtering part 20 is provided to the first polarization guide 30, and the second polarization having the same electric field direction as the narrow width of the polarization filtering part 20 is polarized. It moves along the filtering unit 20 and is provided to the second polarization guide 50. The number, size, and length of the step 25 may be changed according to the frequency of the second polarization guided by the second polarization guide 50.

Meanwhile, a passage 27 connected to the first polarization guide 30 is formed in the central region of the step 25. The width of the step of forming the passage 27 in accordance with the frequency of the first polarization guide provided to the first polarization guide 30 in the longitudinal direction toward the passage 27, the first polarization guide 30 And length and height can be changed.

27 to 29 are graphs illustrating S parameters of first polarized waves of the polarization filtering unit of FIG. 26. Here, FIG. 27 is S11 parameter of port 1, FIG. 28 is S21 parameter between port 1 and port 2, and FIG. 29 is S31 parameter between port 1 and port 3. FIG.

As shown, the first polarization of the S11 parameter is about -24 dB at about 10.7 GHz, and the S21 parameter is high in the same frequency band as the S11 parameter. That is, it can be seen that the first polarization is input from the first port and input to the second port.

30 to 32 are graphs illustrating S parameters of second polarizations of the polarization filtering unit of FIG. 26. Here, FIG. 30 is an S11 parameter of the port 1, FIG. 31 is an S21 parameter between the port 1 and the port 2, and FIG. 29 is an S31 parameter between the port 1 and the port 3.

As shown, the second polarized wave is smaller as the S11 parameter is higher in the frequency band and is -10 dB or less over the entire area of satellite broadcasting. The S31 parameter is larger as the frequency band is higher. That is, it can be seen that the second polarized wave is input from the first port and input to the third port.

33 is a perspective view of the first polarization guide of FIG. 2, FIG. 34 is a perspective view of the first polarization guide of FIG. 33, FIG. 35 is a plan view of the first polarization guide of FIG. 33, and FIG. 36 is a first polarization guide of FIG. 33. 37 is a perspective view of the first polarization guide with the polarization filtering unit 20 coupled thereto, and FIG. 38 is a transparent perspective view of the second waveguide and the second connector.

The first polarization guide 30 guides the first polarization incident to the four horns 10 and exits to the first main opening 46. As shown in FIG. 33, the first polarization guide 30 is provided. Has four openings (A, B, C, D) connected to the four polarization filtering units (20).

The first polarization guide 30 includes a first waveguide 35 having a pair of openings, a second waveguide 40 having a pair of openings disposed in parallel with the first waveguide 35, and a first waveguide 40. And a first mixing pipe 45 connecting the waveguide 35 and the second waveguide 40 to emit the first polarized wave.

Openings are formed at both ends of the first waveguide 35 and the second waveguide 40, and each opening is connected to a passage 27 of the polarization filtering unit 20. That is, one first polarization guide 30 is connected to the four polarization filtering units 20 and receives the first polarization incident to the four horns 15.

The first waveguide 35 is formed with a first projection 36 and a first horizontal film 37 for coupling the first polarizations from both openings in the central region along the longitudinal direction. The first protrusion 36 is formed in an upper region of the first waveguide 35 and has a long rectangular parallelepiped shape along the longitudinal direction of the first waveguide 35. Referring to FIG. 36, the direction of the first polarized wave is incident on the first waveguide 35, and the first polarized wave has a component in the horizontal direction of the opening. The first polarization entering the one connecting tube has a component in the vertical direction.

34 and 36, the first horizontal film 37 protrudes upward from the lower surface of the first waveguide 35 at a position corresponding to the first protrusion 36 so that the first protrusion 36 may be formed. It extends to the bottom. The width of the first horizontal film 37 is almost equal to the width of the opening, and the thickness thereof is formed to be thinner than a predetermined thickness.

In this first waveguide 35, as shown in FIG. 36, each of the first polarizations moved from both openings reaches and merges with the first horizontal film 37, and meets the first protrusion 36 to move in the direction of movement. After the change, it is moved toward the first mixing pipe 45.

The second waveguide 40 is formed in a shape in which the first waveguide 35 is inverted in the vertical direction. The second protruding portion 41 and the second horizontal film 42 for coupling the first polarization from both openings are also formed in the center region of the second waveguide 40. However, unlike the first waveguide 35, the second protrusion 41 is formed in the lower region of the second waveguide 40, and the second horizontal film 42 is formed in the upper region of the second waveguide 40. do. Thus, by arranging the structures of the first waveguide 35 and the second waveguide 40 so that the top and bottom are respectively changed, the first polarization from the first waveguide 35 and the first polarization from the second waveguide 40 It is possible to prevent the phases of? From being reversed so that the first polarization from the first waveguide 35 and the first polarization from the second waveguide 40 are prevented from being canceled out.

As shown in FIG. 36, the first polarized wave incident on the second waveguide 40 is combined in the second horizontal film 42 positioned on the upper portion of the second waveguide 40, and is formed by the second protrusion 41. The traveling direction is changed and then moved toward the first mixing pipe 45.

According to the frequency of the first polarization incident on the first waveguide 35 and the second waveguide 40, the thickness and length of the first and second horizontal films 37 and 42, and the first and second protrusions 36 The thickness and length of 41 may be changed.

The first mixing pipe 45 includes a first connecting pipe 48 connected to the first waveguide 35 and a second connecting pipe 49 connected to the second waveguide 40. It has a first main opening 46 through which the first polarization from the tube 48 and the second connecting tube 49 is emitted.

The first connecting pipe 48 is connected to the upper portion of the central region of the first waveguide 35, extends in parallel with the first waveguide 35, and then the third horizontal film 47 of the first mixing pipe 45 is formed. It is bent downward at an angle toward the formed direction. The second connecting pipe 49 is connected to the lower portion of the central region of the second waveguide 40, extends in parallel with the second waveguide 40, and then has a third horizontal film 47 of the first mixing pipe 45. It is bent upward at a predetermined angle toward the formed direction.

The first mixing pipe 45 is formed in the lengthwise direction of the first connecting pipe 48 and the second connecting pipe 49, and is formed at one end adjacent to the first and second connecting pipes 48 and 49. A third horizontal film 47 protruding along the longitudinal direction of the single mixing pipe 45 is formed. In addition, a pair of fifth protrusions protrude inwardly from both side walls of the first mixing pipe 45 in one region along the longitudinal direction of the first mixing pipe 45 to reduce the width of the first mixing pipe 45 ( 44) is formed. The first polarization from the first connecting pipe 48 and the second connecting pipe 49 reaching the first mixing pipe 45 is combined at the third horizontal film 47 and exits to the first main opening 46. .

Meanwhile, the center frequency of the signal incident on the first mixing pipe 45 is determined according to the length and thickness of the third horizontal film 37 and the pair of fifth protrusions 44. That is, by adjusting the length and thickness of the third horizontal film 37 and the pair of fifth protrusions 44, the center frequency of the signal incident on the first mixing pipe 45 may be shifted. The performance of the first mixing pipe 45 depends on the presence or absence of the pair of fifth protrusions 44.

Now, the mixing tube according to an embodiment of the present invention will be described with reference to FIGS. 39 to 42. Meanwhile, for convenience of description, the PORT 2-3 passage means a passage formed by PORT 2 and PORT 3 facing each other in FIGS. 39, 40, 41, and 42, and the PORT 1 passage is illustrated in FIGS. 39 and 40. In FIG. 41, a passage from PORT 1 to PORT 2-3 passage is used.

39 is a perspective view briefly showing a first mixing pipe according to the present invention, and FIG. 40 is a perspective view of a state in which a pair of fifth protrusions are removed from the first mixing pipe.

Referring to FIG. 39, a pair of fifth protrusions 44 protrude inwardly of the first mixing pipe 45 in a partial region along the longitudinal direction of the PORT 1 passage, and the PORT of the first mixing pipe 45 is located. The left and right widths of one passage (the width of the long side of the PORT 1 passage in FIG. 39) are formed to be reduced.

 FIG. 43 is a graph showing S11 parameters of the first mixing tube of FIG. 39, and FIG. 44 is a graph showing S11 parameters of the first mixing tube of FIG. 40. Here, the side connected to the first connector 48 and the second connector 49 is port 2 and port 3, respectively, and the first main opening 46 is set to port 1.

As shown in FIG. 43, the first mixing pipe 45 according to the present invention had an S11 parameter of about -29 dB in the 11.75 GHz band. This indicates that the reflection of electromagnetic waves incident or exited through port 1 is small. However, as shown in FIG. 44, the S11 parameter was about -18 dB in the same frequency band in the first mixing tube in which the pair of fifth protrusions 44 were removed. It can be seen that the fifth protrusion 44 improves the performance of the first mixing pipe 45.

41 is a perspective view briefly showing a mixing tube according to another embodiment of the present invention, FIG. 42 is a perspective view briefly showing a mixing tube according to another embodiment of the present invention, and FIG. 45 is S11 of FIG. 41. 46 is a graph showing parameters, and FIG. 46 is a graph showing S11 parameters of FIG.

Referring to FIG. 41, a pair of sixth protrusions 51 protrude inwardly of the mixing tube in a partial region along the longitudinal direction of the PORT 1 passage, and the upper and lower widths of the mixing tube (short sides of the PORT 1 passage of FIG. 41). And (i) width). In addition, a pair of grooves 52 are formed in the longitudinal direction of the PORT 2-3 passage, and in particular, they are formed concave outward side by side adjacent to the diaphragm 47. Referring to FIG. 45, in the mixing tube of FIG. 41 according to an embodiment of the present invention, the S11 parameter is about -32 dB in the 11.75 GHz band.

Referring to FIG. 42, seventh protrusions 54a and 54b exist in a portion of the PORT 2-3 passage. The seventh protrusion 54a protrudes to the inside of the mixing pipe in one region of the PORT 2-3 passage, and is particularly formed in a direction of decreasing the short side direction of the PORT 2-3 passage. On the other hand, the other pair of seventh protrusions 54b are formed to protrude to the inside of the mixing pipe at a portion adjacent to the portion where the PORT 1 passage and the PORT 2-3 passage meet, and in particular, reduce the short side direction of the PORT 2-3 passage. It is formed in the direction to make.

39, 41, or 42 described above, the mixing pipe of FIG. 39, 41, or 42 distributes the radio wave incident to one port PORT 1 to both ports PORT 2 and PORT3, or at both ports PORT 2 and PORT 3, respectively. This function collects the incident radio waves to the other port (PORT 1). Therefore, the mixing tube according to Figs. 39, 41, and 42 can be used as a functional block in which two waves are incident to one antenna and collected into one, or one wave is incident and divided into two.

47 and 48 are perspective views of the second polarization guide 50 of FIG. 2, FIG. 49 is a sectional perspective view of the second polarization guide 50 of FIG. 2, and FIG. 50 is a perspective view of a conventional second polarization guide 50. .

The second polarization guide 50 is disposed in parallel with the first polarization guide 30, and receives the second polarization guide received through the polarization filtering unit 20.

The second polarization guide 50 includes a third waveguide 55 for changing the traveling direction of the second polarization wave, a fourth waveguide 60 disposed in parallel with the third waveguide 55, and a third waveguide 55. ) And a second mixing tube 65 connecting the fourth waveguide 60 and having a second main opening 66 to which a second polarization is emitted.

Both end portions of the third waveguide 55 and the fourth waveguide 60 are upwardly opened to be connected to the polarization filtering unit 20, respectively, and the third waveguide 55 and the fourth waveguide 60 are respectively the first and the third waveguides. Disposed at right angles to the two waveguides 35 and 40. That is, the third waveguide 55 and the fourth waveguide 60 are disposed in the direction connecting the first waveguide 35 and the second waveguide 40, respectively.

At both ends of the third waveguide 55, third protrusions 56 are formed at regions penetrating through the polarization filtering unit 20. The third protrusion 56 is formed in a long rectangular parallelepiped shape along the longitudinal direction of the third waveguide 55 and protrudes upward from the bottom surface of the third waveguide 55. When the second polarized wave having the electric field direction along the narrow width of the polarization filtering unit 20 meets the third protrusion 56, the traveling direction is changed.

The surface facing the third protrusion 56 is formed of a reflective surface 57 inclined at a predetermined angle. The second polarized wave in which the traveling direction is changed in the third protrusion 56 is reflected by the reflective surface 57.

In the central region of the third waveguide 55, a fourth horizontal film 58 extending in the longitudinal direction in the longitudinal direction toward the second mixing pipe 65 is formed. Each second polarized wave reflected by the reflecting surface 57 at both ends of the third waveguide 55 meets at the fourth horizontal film 58 and merges, and then proceeds toward the second mixing pipe 65.

The fourth waveguide 60 is formed in the same shape as the third waveguide 55. In other words, the fourth protrusions 61 are formed at regions of both sides of the fourth waveguide 60 to penetrate the polarization filtering unit 20. In addition, the surface of the fourth waveguide 60 that faces the fourth protrusion 61 is formed with a reflecting surface 62 that is inclined at a predetermined angle, and the fourth waveguide 60 is formed in the center region of the fourth waveguide 60. A fifth horizontal film 63 extending in the longitudinal direction of the substrate by a predetermined width is formed.

The second polarization incident to the fourth waveguide 60 is changed in the traveling direction by the fourth protrusion 61, is reflected by the reflective surface 62, and proceeds to the fifth horizontal film 63. The second polarization from both ends of the fourth waveguide 60 meets at the fifth horizontal film 63 and travels toward the second mixing pipe 65. Here, the frequency of the incident and exiting second polarization of the second polarization guide 50 is adjusted according to the thickness and length of the fourth and fifth horizontal films 58 and 63 and the width and height of the reflective surfaces 57 and 62. Can be.

51 and 52 are perspective views of a state in which the first polarization guide and the second polarization guide according to the present invention are coupled from different angles.

As illustrated in FIGS. 51 and 52, the first and second polarization guides are vertically coupled to each other.

FIG. 53 is a perspective view illustrating a coupling area between both ends of the third and fourth waveguides and the polarization filtering unit. FIG.

As shown, the polarization filtering unit 20 is formed as a rectangular passage, the second polarization is formed in the electric field direction along the narrow width of the polarization filtering unit 20. End regions of the third and fourth waveguides 60 connected to the polarization filtering unit 20 are formed in a narrow rectangular shape in the vertical direction, and accordingly, the second polarization forms the third and fourth protrusions 56 and 61. When it meets, the electric field is converted in the vertical direction. In addition, the traveling direction is also switched by 90 degrees. For this reason, in this specification, the part of FIG. 53 is also referred to as a radio wave bending part.

Meanwhile, the second mixed pipe 65 is formed in parallel with the third and fourth waveguides 55 and 60 between the third waveguide 55 and the fourth waveguide 60, and the first mixed pipe 45 and the first mixed pipe 45. It is formed to form a right angle. Therefore, the second main opening 66 formed at one end of the second mixing pipe 65 is perpendicular to the first main opening 46. The sixth horizontal membrane 67 protruding along the longitudinal direction of the third and fourth waveguides 55 and 60 is formed at an end portion of the second mixing tube 65 that faces the second main opening 66. The second polarizations from the third and fourth waveguides 55 and 60 meet at the sixth horizontal film 67, are mixed, and proceed toward the second main opening 66 to be emitted.

Like the first mixing tube 45, the second mixing tube 65 has the frequency of the incident and exiting signals according to the adjustment of the length and thickness of the sixth horizontal membrane 67 and the pair of protrusions 64. You can change the band. In addition, the projection 64 is formed in the second polarization guide 50, so that the performance of the antenna is improved, as can be seen from the S11 parameter shown in FIG.

Meanwhile, as illustrated in FIG. 50, the conventional second polarization guide has a smaller width than the height thereof. That is, the height of the second polarization guide is formed relatively high. On the other hand, the second polarization guide 50 according to the present invention shown in Figure 47, the height is formed lower than the horizontal width. In this case, the second polarization guide 50 has a height of about 50% as compared with the prior art. Accordingly, not only can the height of the second polarization guide 50 be lowered, but the size of the antenna 1 as a whole can be reduced.

54 is a transparent perspective view illustrating a radio wave bending part capable of switching a traveling direction of a magnetic field and an electric field by 90 ° according to another embodiment of the present disclosure, and FIG. 55 is a reference diagram for explaining the radio wave bending part of FIG. 54. FIG. 57 is a graph showing the S11 parameter of FIG. 54.

The propagation bending part of FIG. 54 may be used in the coupling region between both ends of the third and fourth waveguides and the polarization filtering part. In addition, it can be used when both the electric field and the magnetic field are to be turned in the 90 ° direction. Referring to FIG. 57, the S11 parameter of the radio wave bending part of FIG. 54 is good.

The structure as shown in FIG. 55 may redirect the electric field by 90 °, and the structure as shown in FIG. 56 may turn the magnetic field to 90 °. Referring to FIG. 54, it can be seen that both the structure of FIG. 55 and the structure of FIG. 56 are included. Therefore, both the electric field and the magnetic field can be redirected by 90 degrees.

The process of receiving the first polarized wave and the second polarized wave separately from the dual linearly polarized horn array antenna 1 according to the above-described configuration will be described below.

First, when an electromagnetic wave is incident through the horn 10, the electromagnetic wave is guided along the horn 15, and then provided to the polarization filtering unit 20 through the protruding jaw 17. The polarization filtering unit 20 is gradually narrowed by one of the plurality of steps 25, so that the first polarization having the same electric field direction as the long width of the polarization filtering unit 20 is the polarization filtering unit 20. ) Does not pass through and enters the first polarization guide 30 through the opening toward the first polarization guide 30 of the polarization filtering unit 20. In addition, the second polarization having the same electric field direction as the short width of the polarization filtering unit 20 moves downward along the polarization filtering unit 20 and is incident to the second polarization guide 50.

The first polarized wave among the electromagnetic waves incident through the four horns 10 is incident to each opening of the first and second waveguides 35 and 40 of the first polarization guide 30. In the first waveguide 35, the first polarization incident to each opening is met at the first horizontal film 37, and then the electric field is changed in the vertical direction in the first protrusion 36. In the second waveguide 40, the first polarization incident to each opening is combined in the second horizontal film 42, and then the electric field direction is changed in the second protrusion 41 in the vertical direction. The first polarization from the first waveguide 35 and the second waveguide 40 is moved through the first and second connection pipes 48 and 49 and guided to the first mixing pipe 45. In the first mixing pipe 45, the first polarization from the first waveguide 35 and the second waveguide 40 meets at the third horizontal film 47, is combined, and then exits to the first main opening 46.

On the other hand, the second polarization guided to the second polarization guide 50 through the polarization filtering unit 20 has the same electric field direction as the narrow width of the polarization filtering unit 20. The second polarization encounters the third and fourth protrusions 56 and 61 formed in the third and fourth waveguides 55 and 60, respectively, and the traveling direction is changed. The second polarized wave is reflected from the reflecting surfaces 57 and 62 of the third and fourth waveguides 55 and 60 to move to the fourth and fifth horizontal films 58 and 63, and the fourth and fifth horizontal films 58, 63), and then move to second mixing tube (65). In the sixth horizontal film 67 of the second mixing tube 65, the second polarizations from the third and fourth waveguides 55 and 60 are combined, and the combined second polarization is the second of the second mixing tube 65. It exits through the main opening 66.

Meanwhile, the process of transmitting the first polarized wave and the second polarized wave in the dual linearly polarized horn array antenna 1 will be described below.

The second polarization incident to the second mixing tube 65 through the second main opening 66 is separated from the sixth horizontal film 67 and guided to the third and fourth waveguides 55 and 60. In the third and fourth waveguides 55 and 60, the second and second polarized waves are separated once again by the fourth and fifth horizontal films 58 and 63, respectively, and the separated polarized waves are reflected on the reflecting surfaces 57 and 62, respectively. The third and fourth protrusions 56 and 61 are provided. The second polarized wave is changed from the third and fourth protrusions 56 and 61 toward the polarization filtering unit 20 and rises through the polarization filtering unit 20.

On the other hand, the first polarization incident on the first mixing pipe 45 through the first main opening 46 is separated from the third horizontal film 47, and the first and second connecting pipes 48 and 49 are respectively separated. It is transmitted to the first and second waveguides (35, 40) through. In the first and second waveguides 35 and 40, the traveling direction of the first polarization is changed in the first and second protrusions 36 and 41, and the first and second waveguides 35 and 40 are moved to the respective openings by the first and second horizontal films 37 and 42. The first polarization proceeds. The first polarization emitted to each polarization filtering portion 20 through each opening is combined with the second polarization from the second polarization guide 50 and radiated into the air through the horn 15.

Looking at the configuration for manufacturing the dual linearly polarized horn array antenna (1) as an antenna unit as follows.

58 is an exploded perspective view of each layer of the dual linearly polarized horn array antenna according to the present invention, and FIG. 59 is a perspective view of a first layer of the dual linearly polarized horn array antenna according to the present invention, and FIG. 60 is a plan view of the first layer. 61 is a rear view of the first layer.

The dual linearly polarized horn array antenna includes a first layer 100, a first intermediate layer 150, a second layer 200, a second intermediate layer 250, and a third layer 300.

The horn portion 15 and the protruding jaw 17 of the horn 10 are formed in the first layer 100. Accordingly, the horn 15 is formed on the front surface of the first layer 100, and the inner opening is formed on the rear surface of the first layer 100.

62 is a perspective view of the first intermediate layer, FIG. 63 is a plan view of the first intermediate layer, and FIG. 64 is a rear view of the first intermediate layer.

The first intermediate layer 150 is formed with a polarization filtering unit 20 connected to the inner opening formed in the first layer 100, and the polarization filtering unit 20 is adjacent to each corner of the first intermediate layer 150. It is formed through the area. The upper portion of the first waveguide 35, the second waveguide 40, and the first mixed pipe 45 of the first polarization guide 30 is formed on the rear surface of the first intermediate layer 150, and the first waveguide A part of the first protrusion 36 of 35, the second horizontal film 42 of the second waveguide 40, and the third horizontal film 47 of the first mixing pipe 45 are formed.

65 is a perspective view of the second layer, FIG. 66 is a plan view of the second layer, and FIG. 67 is a rear view of the second layer.

In the second layer 200, a lower region of the first polarization guide 30 and a polarization filtering unit 20 are formed. That is, the second layer 200 includes the first horizontal film 37 of the first waveguide 35, the second protrusion 41 of the second waveguide 40, and the third horizontal film 47 of the first mixed pipe 45. The rest of) is formed. In addition, a polarization filtering part 20 is formed in each opening of the first and second waveguides 35 and 40 of the first polarization guide 30, and the polarization filtering part 20 penetrates the second layer 200. Is formed. Accordingly, only the polarization filtering unit 20 is formed on the rear surface of the second layer 200.

68 is a perspective view of the second intermediate layer, and FIG. 69 is a rear view of the second intermediate layer.

The polarization filtering part 20 penetrates through the second intermediate layer 250, and a partial upper region of the second polarization guide 50 is formed on the rear surface of the second intermediate layer 250. On the back of the second intermediate layer 250, the fourth and fifth horizontal films 58 and 63 of the third and fourth waveguides 55 and 60 and the sixth horizontal film 67 of the second mixed pipe 65 are disposed. Is formed.

70 is a perspective view of the third layer, and FIG. 71 is a plan view of the third layer.

The lower region of the second polarization guide 50 is formed in the third layer 300. The third layer 300 forms the second polarization guide 50 together with the second intermediate layer 250, and the third and fourth waveguides 55 and 60 and the second mixing tube 65 are formed. . The third and fourth protrusions 56 and 61 are formed together with the fourth and fifth horizontal films 58 and 63 and the sixth horizontal film 67.

Meanwhile, in the above-described embodiment, the horn array antenna according to the present invention has been described on the basis of an antenna unit consisting of four horns. In general, the horn array antenna preferably has an antenna gain of 27 dB or more, and a performance of 31 dB or more is good. In order to have such a performance, a horn array antenna composed of one antenna unit may be configured, but in general, four antenna units are arranged horizontally and vertically. That is, a total of 16 antenna units constitute one horn array antenna. When configuring the horn array antenna according to the present invention described above, the top area is 390mm * 390mm, the height is about 61mm.

Table 2 below shows the antenna gain of the horn array antenna composed of one antenna unit according to an embodiment of the present invention.

10.7 GHz 11.7 GHz 12.7 GHz First polarization 20.6 dBi 21.3 dBi 21.4 dBi Second polarization 20.5 dBi 21.2 dBi 21.3 dBi

The antenna gain of the first polarization guide 30 is an antenna gain when an electromagnetic wave enters through the first main opening 46 and exits through the mixing unit 15, and an antenna gain of 20 dBi or more in each frequency band of satellite broadcasting. Is showing. The antenna gain of the second polarization guide 50 is an antenna gain when an electromagnetic wave enters through the second main opening 66 and exits through the mixing unit 15. Similar to the first polarization guide 30, satellite broadcasting The antenna gain of more than 20dBi in each frequency band is shown.

Table 3 below shows antenna gains of a horn array antenna composed of 16 antenna units.

10.7 GHz 11.7 GHz 12.7 GHz First polarization 33.0 dBi 33.7 dBi 34.0 dBi Second polarization 33.0 dBi 33.6 dBi 33.9 dBi

The antenna gain of the first polarization guide 30 is 33 dBi or more in each frequency band of satellite broadcasting, and the antenna gain of the second polarization guide 50 is 33 dBi or more in each frequency band of satellite broadcasting.

As can be seen from Table 3, it can be seen that the horn array antenna constructed using the antenna unit according to an embodiment of the present invention has excellent antenna performance.

72 is a graph showing the S11 coefficient of the dual linearly polarized horn array antenna according to the present invention. As shown, according to the S11 coefficient graph in the horn 10 to which electromagnetic waves are radiated, an operating frequency is formed around a center frequency of about 11.4 GHz, and an operating frequency having an S11 coefficient of -10 dB or less is 10 GHz to 13 GHz. Leads to That is, the dual linearly polarized horn array antenna 1 operates in the 10.7 GHz to 12.75 GHz band, which is the frequency band of the satellite broadcasting, and the S11 in the operating frequency band is -10 dB or less, so the characteristics are excellent.

The dual linearly polarized horn array antenna 1 may reduce the height of the horn 10 while maintaining the efficiency of the antenna 1 by forming the protruding jaw 17 in the horn 10. In addition, by forming the second polarization guide 50 wider than the height, not only can the height of the second polarization guide 50 be reduced, but also the size of the dual linearly polarized wave array antenna 1 is reduced in size. can do. In addition, although the size is reduced, as shown in Table 3, it is possible to improve the antenna performance of the horn array antenna.

Although the first polarization and the second polarization have been described based on the electric field, they may be applied to the magnetic field. In addition, the embodiment shown in Figures 58 to 20 shown as a configuration for manufacturing the horn 10, the first polarization guide 30, the second polarization guide 50 according to an embodiment of the present application, where To be exemplary only. If necessary, at least two or more of the horn 10, the first polarization guide 30, and the second polarization guide 50 may be manufactured at the same time by injection molding. In manufacturing the horn 10, the first polarization guide 30, the second polarization guide 50 according to an embodiment of the present application, it is not limited to the number of layers shown in Figs.

Further, in the detailed description of the present invention, specific embodiments have been described, which should be taken as exemplary, and various modifications may be made without departing from the technical spirit of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims below, but also by the equivalents of the claims.

1 is a cross-sectional view of a horn of a common horn antenna,

2 is a front side perspective view of a dual linearly polarized horn array antenna according to an embodiment of the present invention;

3 is a rear perspective view of the dual linearly polarized horn array antenna of FIG. 2;

4 is a perspective view of a dual linearly polarized horn array antenna according to another embodiment of the present invention;

5 is a transparent perspective view of the dual linearly polarized wave array antenna of FIG. 4;

6 is a perspective view of a horn array antenna employing the horn of FIG. 5 according to an embodiment of the present invention;

7 is a side cross-sectional view of a dual linearly polarized horn array antenna according to an embodiment of the present invention;

8 is a perspective view of a horn region of the dual linearly polarized horn array antenna of FIG. 2;

9 is a plan view of the horn of FIG. 8;

10 and 12 are cross-sectional perspective views of the horn of FIG. 8,

11 is a front sectional view of the horn of FIG. 8;

13 is a perspective view of a horn according to another embodiment of the present invention;

14 is a plan view of the horn of FIG. 13;

15 is a side view of the horn of FIG. 13;

16 is a sectional perspective view of the horn of FIG. 13;

17 is a side cross-sectional view of the horn of FIG. 13;

18 is a perspective view of a horn according to another embodiment of the present invention;

19 is a simplified side cross-sectional view of a horn in accordance with the present invention;

20 is a simplified side sectional view of the horn having the same length as the outer opening of the same size as the horn of FIG.

21 is a simplified side cross-sectional view of a horn having the same performance as the horn of FIG. 19;

22 is a simplified side cross-sectional view of a horn in accordance with another embodiment of the present invention;

23 is a graph showing the S11 parameter of the horn of FIG. 19,

24 is a graph showing the S11 parameter of the horn of FIG.

25 is a graph showing the S11 parameter of the horn of FIG. 21,

FIG. 26 is an enlarged perspective view of the polarization filtering part of FIG. 2; FIG.

27 to 29 are graphs illustrating S parameters of first polarized waves of the polarization filtering unit of FIG. 26;

30 to 32 are graphs showing S parameters of second polarizations of the polarization filtering unit of FIG. 26;

33 is a perspective view of the first polarization guide of FIG.

34 is a perspective view of the first polarization guide of FIG. 33,

35 is a plan view of the first polarization guide of FIG. 33,

36 is a side view of the first polarization guide of FIG. 33;

37 is a perspective view of a first polarization guide in a state in which a polarization filtering unit is coupled;

38 is a transparent perspective view of the second waveguide and the second connector,

39 is a perspective view briefly showing a first mixing pipe according to an embodiment of the present invention;

40 is a perspective view of a state in which a pair of fifth protrusions are removed from the first mixing pipe;

41 is a perspective view briefly showing a mixing tube according to another embodiment of the present invention;

42 is a perspective view briefly showing a mixing tube according to another embodiment of the present invention;

43 is a graph showing the S11 parameter of the first mixing pipe of FIG. 39;

44 is a graph showing the S11 parameter of the first mixing pipe of FIG. 40;

45 is a graph showing the S11 parameter of the first mixing pipe of FIG. 41;

46 is a graph showing the S11 parameter of the first mixing pipe of FIG. 42;

47 is a perspective view of the second polarization guide of FIG.

48 is a perspective view of a second polarization guide of FIG. 2;

FIG. 49 is a sectional perspective view of the second polarization guide of FIG. 2;

50 is a perspective view of a conventional second polarization guide,

51 and 52 are a perspective view of the first polarization guide and the second polarization guide coupled to the present invention,

53 is a perspective view showing a coupling area between both ends of the third and fourth waveguides and the polarization filtering unit;

54 is a transparent perspective view illustrating a radio wave bending part capable of switching a traveling direction of a magnetic field and an electric field by 90 ° according to another embodiment of the present invention from various directions;

FIG. 55 is a reference diagram for explaining a radio wave bending part of FIG. 54.

FIG. 56 is another reference diagram for describing a radio wave bending part of FIG. 54.

FIG. 57 is a graph showing the S11 parameter of FIG. 54;

58 is an exploded perspective view of each layer of the dual linearly polarized wave array antenna according to the present invention;

59 is a perspective view of a first layer of the dual linearly polarized horn array antenna according to the present invention;

60 is a plan view of the first layer of FIG. 58,

FIG. 61 is a rear view of the first layer of FIG. 58;

62 is a perspective view of the first intermediate layer of FIG. 58;

63 is a plan view of the first intermediate layer of FIG. 58;

64 is a rear view of the first intermediate layer of FIG. 58;

65 is a perspective view of the second layer of FIG. 58;

FIG. 66 is a plan view of the second layer of FIG. 58;

FIG. 67 is a rear view of the second layer of FIG. 58;

FIG. 68 is a perspective view of the second intermediate layer of FIG. 58;

FIG. 69 is a rear view of the second intermediate layer of FIG. 58;

70 is a perspective view of the third layer of FIG. 58;

71 is a plan view of the third layer of FIG. 58;

72 is a graph showing the S11 coefficient of the dual linearly polarized horn array antenna according to the present invention.

Explanation of symbols on the main parts of the drawings

 1 antenna 10 horn

15: Horn 17: protruding jaw

20: polarization filtering unit 25: step

27: passage 30: first polarization guide

35: first waveguide 36: first projection

37: first side film 40: second waveguide

41: second projection 42: the second horizontal film

45: the first mixed building 46: the first main opening

47: the third horizontal film 48: the first connector

49: second connector 50: second polarization guide

55: third waveguide 56: third projection

57: reflective surface 58: fourth horizontal film

60: fourth waveguide 61: fourth projection

62: reflective surface 62: fifth horizontal film

65: second mixing hall 66: second main opening

67: 6th Street 100: First Layer

150: first intermediate layer 200: second layer

250: second intermediate layer 300: third layer

Claims (2)

In the dual polarized horn array antenna for receiving the first polarization and the second polarization, A plurality of horns in which the first and second polarized waves are incident together; A plurality of polarization filtering units provided in the horns and separating the first polarized wave and the second polarized wave respectively incident together; A first polarization guide for guiding a first polarization separated from the polarization filtering parts; And And a second polarization guide for guiding a second polarization separated from the polarization filtering parts. In the horns, An outer opening of a square shape opened to the outside and a square opening of a square shape opened to the polarization filtering part side are formed, and the inner opening has a rectangular ring shape protruding toward a central area by a predetermined width along the circumference of the inner opening. Protruding jaw is formed, The direction of each side of the outer opening is parallel to the direction of each side of the inner opening, The upper portion of the polarization filtering portion is a rectangular cylinder shape, the lower portion of the polarization filtering portion is a rectangular cylinder shape narrower than the width of the upper portion, the second polarization passes through the lower portion of the rectangular polarization filter portion of the lower polarization filtering portion The second polarization guide connected to the second polarization guide, wherein the first polarization does not pass through a lower portion of the rectangular polarization filtering portion and passes through a passage formed in one of four walls formed on the polarization filtering portion. 1 polarization guide, The passage is formed in the central region along the width direction of any one of the walls, Dual polarized horn array antenna, characterized in that the width of the lower portion of the polarization filtering portion is narrowed in one direction to form a rectangular shape. The method of claim 1, The polarization filtering unit is a dual polarized horn array antenna, characterized in that the portion protruding toward the inner space is formed.

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