KR20100137686A - Radiator having air (or dielectric material) feeding structure in an antenna and power divider connected electrically to the same - Google Patents

Abstract

PURPOSE: A radiator and a power divider thereof are provided to simplify the replacement of a second feeding line by combining the second feeding line with a balun member through a soldering method. CONSTITUTION: A first sub radiator comprises a first, a second feeding line(302a,400a), a balun member(304a), a first, and a second radiation member(310a,312a). A second sub radiator comprises a first feeding line, a second feeding line(400b), a balun member, a first and a second radiation member. A third sub radiator comprises a first feeding line, a second feeding line(400c), a balun member, a first and a second radiation member. A fourth sub radiator comprises a first feeding line, a second feeding line(400d), a balun member, a first and a second radiation member.

Description

A radiator having an air (or dielectric) feeding structure and used in an antenna, and a power divider electrically connected thereto.

The present invention relates to a radiator for use in an antenna and a power divider electrically connected thereto, and more particularly, to a desired input impedance by selectively arranging a second feed line conductor in a groove of a first feed line filled with air or a dielectric. A radiator embodying and a power divider electrically connected thereto.

An antenna is a device that transmits and receives electromagnetic waves by outputting a predetermined radiation pattern. For example, the antenna has a structure as shown in FIG. 1 below.

1 is a view showing the structure of a conventional antenna, Figure 2 is a perspective view schematically showing an enlarged portion A (radiator) of FIG.

Referring to FIG. 1, the antenna includes a reflector plate 100 and a plurality of radiators 102.

The radiators 102 are formed on one surface of the reflector 100 and output a specific radiation pattern when a predetermined power is supplied.

This radiator 102 is composed of a feeder 200 and dipole members 202 and 204 as shown in FIG.

The feeder 200 includes a first feed line 210, a second feed line 212, and a balloon member 214.

The second feed line 212 is located in the groove of the first feed line 210 as shown in FIG. 2, is made of a cable, and is connected to the second dipole member 204. Here, when a predetermined power is supplied through the second feed line 212, a negative current flows to the first dipole member 202 and a positive current flows to the second dipole member 204, and as a result, the radiator A specific radiation pattern is output from 102.

When designing the input impedance of the radiator 102 to the desired value in the structure of such an antenna, it is not easy to implement the desired input impedance because the cable 212 has only a predetermined impedance (for example, 50Ω or 75Ω). Did.

It is an object of the present invention to provide a radiator having a simple structure and capable of easily varying its input impedance and a power divider for distributing power thereto.

In order to achieve the object as described above, the radiator in the antenna according to an embodiment of the present invention; A first feed line electrically connected to a first radiating member of the radiating members; And a second feed line that is a conductor. Here, the first feed line is formed with a groove in the longitudinal direction, the second feed line is located in the groove of the first feed line, the groove is filled with air or dielectric.

According to another embodiment of the present invention, the radiator includes: radiating members; A first feed line electrically connected to a first radiating member of the radiating members; And a second feed line that is a conductor. Here, the first feed line is formed with a groove in the longitudinal direction, the second feed line is located in the groove of the first feed line, the input impedance of the radiator varies according to the size of the second feed line.

According to an embodiment of the present invention, a power distributor for distributing power to sub radiators including a first feed line and a second feed line positioned in a groove of the first feed line may include a substrate; A first feed point arranged on the substrate; A second feed point arranged on the substrate; First and third connection points electrically connected to the first feed point; And a second connection point and a fourth connection point electrically connected to the second feed point. Here, the first connection point, the second connection point, the third connection point and the fourth connection point are electrically connected to second feed lines of the sub radiators included in the first radiator, respectively.

In the radiator of the antenna according to the invention, a second feed line is arranged in the groove of the first feed line filled with air or dielectric. In this case, since the input impedance of the radiator varies according to the size of the second feed line, there is an advantage that the desired input impedance can be easily implemented by selectively using a second feed line of a specific size.

In addition, since the second feed line is coupled to the balun member through a soldering method, the second feed line may be easily replaced.

The power divider electrically connected to the radiator according to the present invention feeds predetermined power to the radiator using conductor distribution lines without using a cable, so that the structure of the power divider can be simplified and simplified, resulting in assembly Deviation can be reduced. In particular, since the distribution line is formed by separating the front and rear of the substrate included in the power divider, the structure of the power divider can be more concise.

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

3 is a view showing the outer surface structure of the radiator of the antenna according to an embodiment of the present invention, Figure 4 is a view showing the inner surface structure of the radiator according to an embodiment of the present invention. 5 is a view schematically showing the structure and coupling form of the radiator according to an embodiment of the present invention.

3 and 4, the antenna of the present embodiment includes at least one radiator for outputting a specific radiation pattern. Preferably, a plurality of radiators are sequentially arranged on one surface of a reflector (not shown) to implement a specific radiation pattern.

The radiator consists of sub radiators, each sub radiator comprising one or more feed lines and at least one radiating member, for example a dipole member.

Hereinafter, for convenience of explanation, it is assumed that the radiator includes four sub radiators 300a, 300b, 300c, and 300d as shown in FIG. 3.

The first sub radiator 300a includes a first feed line 302a, a second feed line 400a, a balun member 304a, a first radiating member 310a, and a second radiating member 312a. do.

The second sub radiator 300b includes a first feed line 302b, a second feed line 400b, a balloon member 304b, a first radiation member 310b, and a second radiation member 312b.

The third sub radiator 300c includes a first feed line 302c, a second feed line 400c, a balloon member 304c, a first radiating member 310c, and a second radiating member 312c.

The fourth sub radiator 300d includes a first feed line 302d, a second feed line 400d, a balloon member 304d, a first radiating member 310d, and a second radiating member 312d.

Since the sub-radiators 300a, 300b, 300c, and 300d have the same structure, the structure and function of the sub-radiators 300a, 300b, 300c, and 300d will be described with reference to only the structure of the first sub-radiator 300a. I'll see.

The first feed line 302a is electrically connected to the first radiating member 310a and is connected to a negative terminal, preferably ground, of a power divider, which will be described later, although not shown.

According to one embodiment of the present invention, a groove of a predetermined depth is formed in the first feed line 302a in the longitudinal direction as shown in FIG. 4. Here, the groove of the first feed line 302a may be filled with air or filled with a dielectric having a specific dielectric constant. However, in consideration of the input impedance of the first sub-radiator 300a as described below, it is preferable to be filled with air rather than a dielectric.

The second feed line 400a is a conductor and is arranged in the groove of the first feed line 302a, for example, having a rod shape as shown in FIG. According to one embodiment of the invention, the second feed line 400a is electrically connected to the balloon member 304a and the second radiating member 312a as shown in FIG. 4.

The balloon member 304a has the same or similar structure as that of the first feed line 302a, that is, a groove may be formed in the longitudinal direction thereof. However, the specific feed line is not arranged in the balloon member 304a.

In addition, the balloon member 304a is electrically connected to the second feed line 400a. For example, the conductor protruding member 402 protrudes from the balloon member 304a, and the second feed line 400a is coupled to the protruding member 402 through, for example, a soldering method.

The first radiating member 310a is electrically connected to the first feed line 302a as shown in FIG. 4.

The second radiating member 310b is electrically connected to the second feed line 400a and the balloon member 304a.

In the first sub radiator 300a having such a structure, when a predetermined power is supplied from the power divider described later to the second feed line 400a, a negative current flows to the first radiating member 310a (+). ) Current flows to the second radiating member 312a. As a result, a specific radiation pattern is output from the first sub radiator 300a.

According to one embodiment of the invention, the first feed line 302a and the balloon member 304 are each electrically connected to the ground on the power divider and are shorted to each other. As a result, the radiation pattern of the first sub radiator 300a may be uniformly output. In detail, a part of the negative current flows through the first feed line 302a during feeding. In this case, without the balloon member 304a, the radiation pattern output from the first sub-radiator 300a is crushed by the negative current flowing through the first feed line 302a. Therefore, the first sub-radiator 300a of the present invention cancels the negative current by using the balun member 304a short-circuited with the first feed line 302a, and as a result, the radiation pattern can be output uniformly. . Here, the balloon member 304a may be implemented to have a length of λ / 4 (λ is a wavelength corresponding to the frequency of the antenna).

Although not described above, a predetermined radiation pattern is output from the third sub radiator 300c through a process similar to the first sub radiator 300a.

The radiation pattern generated from the first sub-radiator 300a and the radiation pattern generated from the third sub-radiator 300c may be combined to generate, for example, +45 degree polarization.

Of course, a radiation pattern may be generated from the second sub-radiator 300b and the fourth sub-radiator 300d, respectively, and the radiation patterns may be synthesized to generate a -45 degree polarization.

That is, the radiator of the antenna of the present embodiment may generate ± 45 degree polarization using four sub radiators 300a, 300b, 300c, and 300d.

In short, grooves are formed in the first feed lines 302a, 302b, 302c, and 302d of the sub radiators 300a, 300b, 300c, and 300d in the antenna of this embodiment, respectively, and have a rod shape in the grooves, for example. Second feed lines 400a, 400b, 400c and 400d are arranged. In this case, each of the grooves is filled with air or a dielectric.

In the prior art, a cable having only a specific impedance is arranged in a groove of a feed line, and it is difficult to implement a desired input impedance due to the limitation of the cable.

However, in the antenna of the present invention, rod-shaped second feed lines 400a, 400b, 400c and 400d are arranged in the grooves of the first feed lines 302a, 302b, 302c and 302d. Here, input impedances of the sub radiators 300a, 300b, 300c, and 300d may vary according to sizes, for example, widths and thicknesses of the second feed lines 400a, 400b, 400c, and 400d. Therefore, when a user wants to implement a specific input impedance, the user may select a second feed line having a size that matches the input impedance, and solder the selected second feed line to the protruding member. In addition to the easy process, the size of the second feed line can be selected in various ways, so that the input impedance can be finely adjusted and easily implemented.

In another aspect, the input impedance of the corresponding sub-radiator may be varied by changing the distance between the first feed line and the second feed line arranged therein.

Above, the grooves of the first feed line 302a, 302b, 302c or 302d may be filled with air or a dielectric, but if filled with a dielectric the input impedance of the corresponding sub radiator 300a, 300b, 300c or 300d will be filled with air. Lower than ever Here, as the input impedance is higher, the bandwidth of the antenna is increased, and therefore, the groove of the first feed line 302a, 302b, 302c or 302d is preferably filled with air rather than a dielectric in consideration of broadband.

According to an embodiment of the present invention, the sub radiator 300a, 300b, 300c or 300d may have a second feed line 400a, 400b, 400c or 400d in the groove of the first feed line 302a, 302b, 302c or 302d. ) May further include at least one support member 404 for stably fixing.

Some of the support members 404 may have a structure capable of stably fixing the second feed line 400a, 400b, 400c or 400d as shown in FIG. 5.

The support members 404 may be made of a predetermined resin, and the resin may be injected into the inner surface through the hole 500 formed in the outer surface of the first feed line 302a, 302b, 302c, or 302d.

6 is a diagram illustrating a characteristic graph of an antenna according to an embodiment of the present invention. However, it is assumed that the groove of the first feed line 302a of the first sub radiator 300a is filled with air.

As shown in FIG. 6A, the outer width a of the first feed line 302a, the inner widths b and d, and the distance c between the bottom surface of the groove and the second feed line 400a ), The width e and the thickness f of the second power feed line 400a were set in order of 9 mm, 6 mm, 6.77 mm, 3 mm, 2 mm, and 2 mm. In this case, the S21 parameter as shown in FIG. 6B and the S11 parameter as shown in FIG. 6C are implemented.

In this structure, the input impedance of the first sub radiator 300a is varied when b, c, d, e and f change. Here, when the second feed line having a different size is selected, at least one of b, c, d, e and f is changed, and as a result, the input impedance of the first sub radiator 300a is changed. Of course, the input impedance of the first sub radiator 300a may be varied through various methods such as changing the structure of the first feed line 302a in addition to the selective use of the second feed line having a different size. However, in consideration of design convenience, it is desirable to select a new second feed line having a different width (e) and thickness (f) to achieve the desired input impedance.

7 is a view showing a radiator according to another embodiment of the present invention.

Referring to FIG. 7, the radiator of the present embodiment includes four sub radiators, for example.

Hereinafter, since the structure of the sub radiators is similar to the sub radiators 300a, 300b, 300c and 300d of FIG. 3, the description of the structure of the sub radiators will be omitted and the reference numerals of FIG. 3 will be used.

Referring to FIG. 7, the first dielectric member 700 and the second dielectric member 702 may be coupled to the sub radiators 300a, 300b, 300c, and 300d.

The first dielectric member 700 is the end of the first radiating member 310b of the second sub radiator 300b for the negative current and the second radiating member of the third radiating member 300c for the positive current. May be coupled to an end of 312c. In this case, the electrical lengths of the first radiating member 310b of the second sub radiator 300b and the second radiating member 312c of the third radiating member 300c are respectively increased.

The second dielectric member 702 is the end of the second radiating member 312d of the fourth sub radiator 300d for positive current and the first radiating member of the first radiating member 300a for negative current. May be coupled to an end of 310a. In this case, the electrical lengths of the second radiation member 312d of the fourth sub-radiator 300d and the first radiation member 310a of the first radiation member 300a are respectively increased.

When the dielectric members 700 and 702 are coupled to the sub radiators 300a, 300b, 300c, and 300d as described above, the movement error (beam pointing error) of the main beam of the antenna may be reduced.

According to another embodiment of the present invention, the dielectric member may be independently coupled to the sub radiators 300a, 300b, 300c, and 300d, respectively. However, based on the +45 degree polarization, when a specific dielectric member is coupled to the first radiating member 310a through which a negative current flows in the first sub radiator 300a, the other dielectric member is connected to the third sub radiator 300c. ) Is coupled to the second radiating member 312c through which a positive current flows. Also, based on the -45 degree polarization, when a specific dielectric member is coupled to the first radiating member 310b through which a negative current flows in the second sub radiator 300b, the other dielectric member is connected to the fourth sub radiator 300d. ) Is coupled to the second radiating member 312d through which a positive current flows. That is, for a specific polarization, the dielectric member may be respectively coupled to the radiation member through which the positive current flows and the radiation member through which the negative current flows, and as long as such conditions, the coupling structure and method of the dielectric members may be variously modified. have.

In short, the sub radiator included in the radiator of the antenna of the present embodiment arranges the second feed line in the groove of the first feed line filled with air or dielectric for input impedance matching, and part of the sub radiator for improving beam pointing error. It has a structure for joining the dielectric member.

8 shows power dividers distributing power to a radiator. Specifically, FIG. 8 (A) illustrates the concept of a power divider used in a conventional antenna, and FIG. 8 (B) illustrates the concept of a power divider used in an antenna of the present invention, and FIG. 8 (C). Shows the actual implemented power divider used in the antenna of the present invention. Here, for the convenience of description, it is assumed that the radiator of each antenna includes four sub radiators.

Referring to FIG. 8A, a power divider used in a conventional antenna includes a substrate 800 and combiners 804a, 804b, 804c, and 804d to supply power to two radiators. It includes.

A first connection point 802a for +45 degree polarization and a second connection point 802b for −45 degree polarization are formed on the substrate 800.

The first connection point 802a and the first coupler 804a are connected through the 1-1 cable 806a, and the first connection point 802a and the second coupler 804b connect the 1-2 cable 806b. Connected through. In addition, the second connection point 802b and the third coupler 804c are connected through the first 1-3 cable 806c, and the second connection point 802b and the fourth coupler 804d are the first-4 cable 806d. Is connected through Here, the first cables 806a, 806b, 806c and 806d generally have an impedance of 50 Ω, respectively.

The first coupler 804a splits the power supplied through the first-first cable 806a into two and then provides it to the first radiating member 808a and the second radiating member 808b of the first radiator. In this case, the first coupler 804a and the respective radiating members 808a and 808b are connected through the second cables 810a and 810b. Here, the second cables 810a and 810b have a higher impedance, for example 75Ω or 100Ω, than the 1-1 cable 806a in order to implement broadband.

The second coupler 804b splits the power supplied through the 1-2 cable 806b into two and provides it to the first radiating member 808c and the second radiating member 808d of the second radiator. In this case, the second coupler 804b and the respective radiating members 808c and 808d are connected through the second cables 810c and 810d. Here, the second cables 810c and 810d have a higher impedance, for example 75Ω or 100Ω, than the 1-2 cables 806b.

When power is supplied as described above, the first radiator and the second radiator respectively generate an electric field, and the electric fields are synthesized to generate +45 degree polarization.

The third coupler 804c splits the power supplied through the first 1-3 cable 806c into two and provides it to the first radiating member 808e and the second radiating member 808f of the third radiator. In this case, the third coupler 804c and the respective radiating members 808e and 808f are connected through the second cables 810e and 810f. Here, the second cables 810e and 810f have higher impedance, for example 75Ω or 100Ω, than the first 1-3 cables 806c.

The fourth coupler 804d splits the power supplied through the first-4 cable 806d into two and provides it to the first radiating member 808g and the second radiating member 808h of the fourth radiator. In this case, the fourth coupler 804d and the respective radiating members 808g and 808h are connected through the second cables 810g and 810h. Here, the second cables 810g and 810h have a higher impedance, for example 75Ω or 100Ω, than the 1-4 cable 806d.

When power is supplied as above, the third radiator and the fourth radiator respectively generate an electric field, and the electric fields are synthesized to generate a -45 degree polarization.

In short, the conventional power divider is composed of a plurality of couplers and a plurality of cables, and thus has a disadvantage in that the configuration is complicated and difficult to assemble and the assembly variation is severe even after assembly.

Therefore, the antenna of the present invention uses a power divider having the structure shown in Figs. 8B and 8C. Here, in FIG. 8B, the grounds are omitted, and in FIG. 8C, only some of the grounds are omitted.

8B and 8C, the power divider of this embodiment supplies power to two radiators, for example, the substrate 820, feed points 822a and 822b, the distribution line. 824a, 824b, 824c and 824d and connection points 826 and 828.

The first feed point 822a is arranged on the first surface of the substrate 820, and receives power for phase shifting from a phase shifter (not shown) located on the other surface of the reflector 840 for polarization of +45 degrees. to be.

The first distribution line 824a and the third distribution line 824c are arranged on the first side of the substrate 820, and the first feed point 822a as shown in FIGS. 8B and 8C. Are arranged symmetrically from Thus, power supplied to the first feed point 822a is provided to the connection points 826a, 826c, 828a and 828c via distribution lines 824a and 824c.

In addition, the second distribution line 824b and the fourth distribution line 824d are arranged on the first side or the second side (back side) of the substrate 820, and are shown in FIGS. 8B and 8C. As shown, they are arranged symmetrically from the second feed point 822b. Thus, power supplied to second feed point 822b is provided to connection points 826b, 826d, 828b and 828d via distribution lines 824b and 824d.

The connection point 826a is electrically connected to the second feed line 400a of the first sub radiator 300a included in the first radiator, and the connection point 826c is connected to the second feed line of the third sub radiator 300c. 400c) electrically. As a result, +45 degree polarization may occur due to the combination of the radiation patterns output from the first sub radiator 300a and the third sub radiator 300c during power feeding.

According to an embodiment of the present invention, the input impedance of the first sub-radiator 300a and the input impedance of the third sub-radiator 300c are connected between the first feed point 822a and the phase shifter for broadband. It may be implemented to have a value larger than the impedance of.

The connection point 826b is electrically connected to the second feed line 400b of the second sub radiator 300b included in the first radiator, and the connection point 826d is the second feed line of the fourth sub radiator 300d. Is electrically connected to 400d. As a result, a -45 degree polarization may occur due to the combination of the radiation patterns output from the second sub radiator 300b and the fourth sub radiator 300d during power feeding.

According to an embodiment of the present invention, an input impedance of the second sub-radiator 300b and an input impedance of the fourth sub-radiator 300d are connected between the second feed point 822b and the phase shifter for broadband. It may be implemented to have a value larger than the impedance of.

That is, the connection points 826a, 826b, 826c and 826d are electrically connected to the second feed lines 400a, 400b, 400c and 400d of the sub radiators 300a, 300b, 300c and 300d included in the first radiator. Connected.

Similar to the connection points 826a, 826b, 826c, and 826d, the connection points 828a, 828b, 828c, and 828d are electrically connected to the second feed lines of the sub radiators included in the second radiator.

In FIG. 8B, all the components for +45 degree polarization and -45 degree polarization are shown arranged on the first surface of the substrate 820. However, according to another embodiment of the present invention, the components for +45 degree polarization are arranged on the first side of the substrate 820 and the components for -45 degree polarization as shown in FIG. 8 (C). It may be arranged on a second side opposite to the first side of the substrate 820.

Specifically, feed point 822a, distribution lines 824a and 824c, connection points 826a, 826c, 828a and 828c and grounds for +45 degree polarization as shown in FIG. 8 (C). 830a, 832a, etc.) are formed over the first surface of the substrate 820. Here, two grounds 830a, 832a, and the like are arranged around the connection points 826a, 826c, 828a, and 828c, respectively, and are electrically connected to the first feed line and the balloon member of the corresponding sub-radiator. However, for the sake of simplicity, the reference numerals for the grounds are indicated only at the grounds 830a and 830b around the connection point 826a, and the reference numerals are not indicated for the remaining grounds.

Also, feed points 822b, distribution lines 824b and 824d, connection points 826b, 826d, 828b and 828d, and grounds for −45 degree polarization are formed over the second surface of the substrate 820. For simplicity, in FIG. 8C, other components (distribution lines and grounds) except for connection points 826b, 826d, 828b, and 828d are omitted.

In short, unlike a conventional power divider that uses multiple cables, the power divider of this embodiment has connection lines 824a, 824b, 824c, and 824d and connection points 826a, 826b, 826c on the substrate 820 without the use of cables. 826d, 828a, 828b, 828c, and 828d are used to feed a predetermined power to two radiators.

As shown in Figs. 8B and 8C, the structure of the power divider of the present invention can be concise and assembly deviation can be reduced, and it is easy to assemble, so that the productivity of the power divider can be improved.

In particular, as shown in FIG. 8C, when both sides of the substrate 820 are used, that is, the distribution lines 824a and 824c and related elements are arranged on one surface of the substrate 820 and the distribution lines are separated. Arranging 824b and 824d and related elements on the other side of the substrate 820 may further simplify the structure of the power divider.

The embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art having ordinary knowledge of the present invention may make various modifications, changes, and additions within the spirit and scope of the present invention. Should be considered to be within the scope of the following claims.

1 is a view showing the structure of a conventional antenna.

FIG. 2 is a perspective view schematically showing an enlarged portion A (radiator) of FIG. 1.

3 is a view showing the outer surface structure of the radiator of the antenna according to an embodiment of the present invention.

4 is a view showing the inner surface structure of the radiator according to an embodiment of the present invention.

5 is a view schematically showing the structure and coupling form of the sub-radiator according to an embodiment of the present invention.

6 is a diagram illustrating a characteristic graph of an antenna according to an embodiment of the present invention.

7 is a view showing a radiator according to another embodiment of the present invention.

8 shows power dividers distributing power to a radiator.

Claims (13)

Radiating members; A first feed line electrically connected to a first radiating member of the radiating members; And Including a second feed line that is a conductor, The first feed line has a groove formed in the longitudinal direction, the second feed line is located in the groove of the first feed line, the groove is filled in the antenna, characterized in that the antenna filled with air or a dielectric. The method of claim 1, wherein the radiator is A balun member electrically connected to a second radiating member of the radiating members and short-circuited with the first feeding line; And the second feed line is electrically connected to the second radiating member and the balun member. 3. The power supply of claim 2, wherein the second feed line has a rod shape and is electrically connected to a connection point of a power divider, wherein an input impedance of the radiator is different from an impedance of a cable connected from a phase shifter to the power divider. The radiator in the antenna. The method of claim 2, wherein the radiator is A protruding member made of a conductor and protruding from the balun member; And Further comprising at least one support member for supporting the second feed line in a state located in the groove of the first feed line, And the projecting member is electrically connected to the second feed line. The radiator of claim 1, wherein a dielectric member is coupled to at least one of the radiating members. 2. The radiator of claim 1, wherein an input impedance of the radiator varies according to the size of the second feed line. In the radiator, Radiating members; A first feed line electrically connected to a first radiating member of the radiating members; And Including a second feed line that is a conductor, Grooves are formed in the first feed line in the longitudinal direction, and the second feed line is located in the groove of the first feed line, and the input impedance of the radiator varies according to the size of the second feed line. Radiator in an antenna to be. The method of claim 7, wherein the radiator is Further comprising a balun member electrically connected with a second radiating member of the radiating member, The groove is filled with air or a dielectric, the balun member is electrically connected with the second feed line, the second feed line is electrically connected with a connection point of a power divider, and the input impedance of the radiator is from a phase shifter. And an impedance of a cable connected to said power divider. The method of claim 7, wherein the radiator is A protruding member made of a conductor and protruding from the balun member; And Further comprising at least one support member for supporting the second feed line in a state located in the groove of the first feed line, And the projecting member is electrically connected to the second feed line. A power divider for distributing power to sub-radiators comprising a first feed line and a second feed line, each positioned within a groove of the first feed line; Board; A first feed point arranged on the substrate; A second feed point arranged on the substrate; First and third connection points electrically connected to the first feed point; And Including a second connection point and a fourth connection point electrically connected to the second feed point, And the first connection point, the second connection point, the third connection point and the fourth connection point are electrically connected to second feed lines of the sub radiators included in the first radiator, respectively. 11. The method of claim 10, wherein the first connection point and the third connection point is associated with a +45 degree polarization, the second connection point and the fourth connection point is associated with a -45 degree polarization, the first feed point, the first The first connection point and the third connection point are arranged on a first side of the substrate, and the second feed point, the second connection point and the fourth connection point are arranged on a second side opposite to the first side of the substrate. Featuring power divider. The method of claim 10, wherein the power divider, A first distribution line connecting the first feed point, the first connection point, and the third connection point; A second distribution line connecting the second feed point, the second connection point and the fourth connection point; A fifth connection point and a seventh connection point; A third distribution line connecting the first feed point, the fifth connection point, and the seventh connection point; Sixth and eighth connection points; A fourth distribution line connecting the second feed point, the sixth connection point and the eighth connection point; And Further comprising grounds arranged around the connection points, And the fifth connection point, the sixth connection point, the seventh connection point, and the eighth connection point are electrically connected to second feed lines of sub radiators included in the second radiator, respectively. 13. The method of claim 12, wherein the fifth connection point and the seventh connection point are associated with a +45 degree polarization, the sixth connection point and the eighth connection point are associated with a -45 degree polarization, and the first distribution line, the first Three distribution lines, the fifth connection point and the seventh connection point are arranged on the first surface of the substrate, and the second distribution line, the fourth distribution line, the sixth connection point and the eighth connection point are formed on the first surface of the substrate. And a power divider arranged on a second side opposite to the first side.

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