KR100905479B1 - Antenna gain attenuating member and method for optimumly adjusting antenna receiving angle using the same - Google Patents

Abstract

The present invention relates to a method for optimally adjusting a gain attenuation member of an antenna and a reception angle of an antenna using the same, wherein the gain attenuation member of the antenna is detachably mounted on the front of the antenna, and the gain of the antenna Decrease. As a result, the reception angle of the antenna having a good screen can be optimally adjusted, so that satellite broadcasts with clear image quality can be viewed even when the weather conditions are deteriorated or the reception angle is changed by external shocks.

Planar, Satellite, Antenna, Gain, Barrier, Conductive Material, Blocking Filter

Description

ANTENNA GAIN ATTENUATING MEMBER AND METHOD FOR OPTIMUMLY ADJUSTING ANTENNA RECEIVING ANGLE USING THE SAME}

1 is a perspective view showing an embodiment of a planar satellite antenna,

2 is an exploded perspective view of each layer constituting the planar satellite antenna of FIG.

3 is a perspective view of a gain attenuating member according to an embodiment of the present invention mounted on the planar satellite antenna of FIG. 1;

4 is a perspective view of a gain attenuating member mounted on the planar satellite antenna of FIG. 1 according to another embodiment of the present invention;

5 is a flowchart illustrating a process of optimally adjusting a reception angle of a planar satellite antenna using a gain attenuation member according to the present invention.

Explanation of symbols on the main parts of the drawings

 1: Planar Satellite Antenna 80: Block

85: conductive material 90: blocking filter

The present invention relates to a method for optimally adjusting a gain attenuation member of an antenna and a reception angle of an antenna using the same. More particularly, the antenna can be installed at an optimal reception angle by reducing a gain during installation of the antenna. It relates to a gain attenuation member of the antenna.

As a satellite antenna used for transmitting and receiving satellite signals in relay satellite communication, a parabolic antenna formed of a circular reflector is mainly used.

Conventional parabolic antennas are bulky and overweight antennas themselves, and are difficult for consumers to install because they must be installed to direct toward satellites. Therefore, the installation cost is separately consumed because it must be commissioned by a specialized company that specializes in the installation of the reflector antenna. In addition, since it is installed outside, the reception angle may be changed in response to weather conditions such as typhoons and storms, or the impact from the outside may be changed. If the weather conditions deteriorate or the reception angle is changed, the performance of receiving satellite signals from satellites may deteriorate, which may result in deterioration of the image quality of the satellite broadcast or the inability to watch at all.

In order to make up for the shortcomings of such parabolic antennas, the developed antenna is a planar antenna. The planar antenna is an array antenna in which a plurality of small antennas are arranged in a grid on a plane. The planar antenna has a good reception performance because the antenna is manufactured in a smaller size than the parabolic antenna and has a high gain and low directivity. Therefore, even if the reception angle is not set exactly like the parabolic antenna, reception of satellite signals is easy. Accordingly, the planar antenna can be easily installed by the consumer without having to request a specialized company, so the installation is simple and no additional installation cost is consumed.

However, since the satellite signal is received even when the reception angle is not set correctly when the planar antenna is installed, the reception angle may not be set to an optimal angle for receiving the satellite signal when the consumer installs the antenna. In this case, the image quality is usually good, but if the reception angle is deteriorated due to a bad weather condition such as a typhoon or a storm, or an external shock, the image quality of the satellite broadcast is reduced.

Accordingly, by installing a structure that can reduce the gain of the antenna so that the image quality is sensitively changed according to the reception angle of the planar antenna when the antenna is installed, a method of installing the planar antenna at a more accurate reception angle should be sought. .

Accordingly, an object of the present invention is to provide a method for optimally adjusting a gain attenuating member of an antenna and an antenna receiving angle using the same so that the antenna can be installed at an optimal reception angle by reducing gain during installation of the antenna. will be.

The object is achieved by a gain attenuating member of an antenna, which is detachably mounted on the front of the antenna and reduces the gain of the mounted antenna.

The antenna gain attenuation member may be a blocking film coated with a conductive material.

According to at least one of the size of the barrier layer and the concentration of the conductive material, the degree of gain attenuation of the antenna may be adjusted.

The gain attenuation member of the antenna may be a plate-shaped blocking filter made of a conductive material.

The blocking filter blocks a part of the front surface of the antenna, and a degree of attenuation of the gain may be adjusted according to the size of the blocking filter.

On the other hand, the object, the gain attenuation member of the antenna is mounted on the front of the antenna; Connecting the antenna to an output device; And adjusting the reception angle of the antenna on the basis of the image quality of the screen displayed through the output device.

In the adjusting of the reception angle of the antenna, it is preferable to adjust the reception angle of the antenna when the image quality of the screen is good.

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

The present invention relates to a method for optimally adjusting a gain attenuation member of an antenna and a reception angle of an antenna using the same, and when the antenna is installed, the antenna is correctly mounted on a planar satellite antenna to reduce the gain of the antenna, thereby accurately receiving the antenna. Make sure it fits in.

In detail, the present invention, by mounting a gain attenuating member for reducing the antenna gain to the antenna, it is possible to find the optimal reception angle of the antenna when installing the antenna. A gain attenuating member of an antenna according to an embodiment of the present invention is mounted to the antenna to reduce the antenna gain of the antenna. Preferably, the gain attenuation member is configured to obtain a reference antenna gain (for example, an antenna gain in the case of providing good image quality) only when the antenna is installed at an optimal reception angle.

For example, in order to obtain a good image quality, the antenna should have a gain of 20 dB, and the antenna to which the gain attenuation member according to an embodiment of the present invention will be mounted has three directions (A angle and B angle clockwise with respect to the north). ,, And C angle), all have a gain of 20dB or more as shown in Table 1 below.

direction Antenna gain A angle direction 21 dB B angle direction 25 dB C angle direction 22 dB

When the gain attenuation member according to the embodiment of the present invention is mounted to the antenna, the antenna gain in the A angle direction and the antenna gain in the C angle direction are less than 20 dB, respectively, and the antenna gain in the B angle direction is 20 dB or more. Should be configured to be In this way, when installing the antenna equipped with the gain attenuating member according to an embodiment of the present invention, the installer can find the optimum reception angle of the antenna while looking at the monitor, which is an output device connected to the antenna.

In the following embodiment, the gain attenuation member is described as an example in which it is mounted on the planar satellite antenna shown in FIG. 1, but the present invention is not limited only to the planar satellite antenna, for example, the width of the antenna main radiation beam. If the antenna having this wide feature can be applied to other types of antennas other than planar, it does not necessarily need to be a satellite antenna.

FIG. 1 is a perspective view showing an embodiment of a planar satellite antenna, and FIG. 2 is an exploded perspective view of each layer constituting the planar satellite antenna of FIG. 1.

The planar satellite antenna 1 shown in FIG. 1 is formed in a rectangular shape having a predetermined thickness, and is a first polarization of a horn 10 through which satellite signals are input and output, and a vertical polarization signal among satellite signals input and output to the horn 10. A first polarization guide 30 for guiding polarization and a second polarization guide 50 for guiding a second polarization, which is a horizontal polarization, among satellite signals input and output to the horn.

The planar satellite antenna 1 is formed by arranging a plurality of small antennas along a row direction and a column direction, and each small antenna includes four horns 10, a single first polarization guide 30, and a single first antenna. It consists of two polarization guides (50).

In addition, in the planar satellite antenna 1, the horn 10, the first polarization guide 30, and the second polarization guide 50 are formed by a plurality of layers stacked on each other, and the plurality of layers are shown in FIG. As shown, the first layer 100, the second layer 150, the third layer 200, the fourth layer 250, and the fifth layer 300 are formed.

The first layer 100 is formed of a lattice divider 70, and the divider 70 has a plurality of ribs 75 arranged in a matrix. The rib 75 is arranged to be divided into 16 zones, for one small antenna with four horns 10.

The second layer 150 is formed with an inclined portion 15 of the horn 10 narrowing toward the inside and a protruding jaw 17 protruding inward at the end of the inclined portion 15. Here, the inclined portion 15 is formed on the plane side of the first layer 100, the projection jaw 17 is formed on the back side of the first layer (100).

The third layer 200 is formed with a polarization filtering part 20 connected to the protruding jaw 17 formed on the second layer 150, and the polarization filtering part 20 is formed at each corner of the second layer 150. It is formed through adjacent areas. A step 25 and a protrusion 19 are formed inside the polarization filtering unit 20.

On the back of the third layer 200, the first to fourth guide pipes 31, 32, 33, 34, the first and second intermediate pipes 35, 40, and the first, which constitute the first polarization guide 30, The upper portion of the one mixing pipe 45 and the discharge pipe 48 is formed.

A lower region of the first polarization guide 30 is formed on the upper surface of the fourth layer 250, and an upper region of the second polarization guide 50 is formed on the lower surface of the fourth layer 250. The polarization filtering unit 20 is formed through the 250.

That is, on the upper surface of the fourth layer 250, the first to fourth guide tubes 31, 32, 33, 34, the first and second intermediate tubes 35, 40, and the first polarization guide 30 of the first polarization guide 30 The lower part of the mixing pipe 45 and the discharge pipe 48 is formed. In addition, upper surfaces of the third and fourth intermediate pipes 55 and 60 and the second mixed pipe 65 constituting the second polarization guide 50 are formed on the lower surface of the fourth layer 250.

The lower region of the second polarization guide 50 is formed in the fifth layer 300. The fifth layer 300 forms the second polarization guide 50 together with the fourth layer 250, and the first to fourth turning parts 51, 52, 53, 54, and the third and fourth mediations. The pipes 55 and 60 and the second mixed pipe 65 are formed. In the first to fourth turning parts 51, 52, 53, and 54 of the fifth layer 300, the protruding end 68 and the reflecting surface 69 for changing the traveling direction of the second polarization are formed, respectively. It is.

3 is a perspective view of a gain attenuating member according to an embodiment of the present invention mounted on the planar satellite antenna 1 of FIG. 1.

The gain attenuation members 80 and 90 are used to attenuate the gain of the planar satellite antenna 1 when the front surface of the planar satellite antenna 1 is installed. And conductive material 85 applied to 80).

The blocking film 80 may be formed of an insulating material such as sponge, styrofoam, paper, plastic resin, wood, ceramic, and the like. In this embodiment, the blocking film 80 is made of sponge. As shown in FIG. 3, the blocking film 80 may be manufactured to be the same size as the front surface of the planar satellite antenna 1 or may be made smaller than the size of the front surface. And the thickness of the blocking film 80 may be manufactured to about 5 ~ 10mm.

As the conductive material 85 applied to the blocking film 80, carbon is used, and other conductive material 85 may be used. For example, a conductive material 85 such as silver (Ag), lead (Pd), platinum (Pt), nickel (Ni), copper (Cu), or the like may be applied. The conductive material 85 may be used in only one type, or two or more conductive materials 85 may be mixed and used.

When the shielding film 80 coated with the conductive material 85 is installed on the front surface of the planar satellite antenna 1, a portion of the satellite signal is not guided to the horn 10 and the conductive material 85 is removed from the shielding film 80. By moving along, the gain of the planar satellite antenna 1 can be attenuated. The blocking film 80 according to the embodiment of the present invention is detachably mounted to the satellite antenna 1. That is, in some cases, the blocking film 80 may be mounted on or detached from the antenna 1.

Here, the degree of gain attenuation of the planar satellite antenna 1 may be adjusted according to the concentration of the conductive material 85 applied to the blocking film 80. In other words, if the concentration of the conductive material 85 is increased, the degree of blocking of the satellite signal is increased, so that the gain of the planar satellite antenna 1 can be relatively attenuated. In this case, the gain of the planar satellite antenna 1 can be reduced by 2 to 3 dB or more. On the other hand, reducing the concentration of the conductive material 85 can reduce the gain of the planar satellite antenna 1 relatively small, in which case the gain of the planar satellite antenna 1 is reduced by 2-3 dB or less. You can.

According to an embodiment of the present invention, the concentration of the conductive material 85 applied to the blocking film 80 is only when the antenna is installed at the optimum reception angle when the blocking film 80 is mounted on the antenna 1. Gain is adjusted to be equal to or greater than the reference antenna gain.

In this specification, the term "reference antenna gain" means the degree to which the antenna installer feels the image quality of the screen displayed on the monitor satisfactorily when looking at the monitor outputting the broadcast signal received from the installed antenna.

On the other hand, in the present specification, the "antenna front" means a "plane" through which the antenna transmits and receives signals.

In addition, the degree of gain attenuation of the planar satellite antenna 1 can be adjusted according to the size of the blocking film 80. For example, if the size of the shielding film 80 is the same size as the front surface of the planar satellite antenna 1, the gain of the planar satellite antenna 1 can be greatly reduced. On the other hand, if the size of the shielding film 80 is reduced, the gain of the planar satellite antenna 1 can be relatively reduced.

That is, the blocking film 80 according to an embodiment of the present invention may be implemented in two embodiments as follows.

1) When the blocking film 80 covers the entirety of the antenna 1 by being larger than or equal to the size of the blocking film 80 and the size of the antenna 1.

In this case, the concentration of the conductive material 85 may be adjusted to control the gain attenuation of the antenna 1. The lower the concentration of the conductive material 85, the closer the antenna gain would be to the blocking film 80 when not mounted on the antenna 1, and the higher the concentration of the conductive material 85, the higher the gain of the antenna 1 Will decrease.

2) When the size of the blocking film 80 is smaller than the size of the antenna 10

Even in this case, by adjusting the concentration of the conductive material 85, the gain attenuation degree of the antenna 1 can be adjusted, and the size of the blocking film 80 also contributes to adjusting the gain attenuation degree of the antenna 1.

The gain damping members 80 and 90 formed of the above-described blocking film 80 are installed in front of the antenna when installed in the planar satellite antenna 1 to attenuate the gain of the planar satellite antenna 1.

As the gain of the planar satellite antenna 1 is attenuated, unlike in the related art, the reception of the satellite signal becomes good only when the reception angle of the antenna is located within the allowable range toward the satellite direction. Thus, the consumer can set the position of the planar satellite antenna 1 at a more accurate reception angle than in the prior art.

4 is a perspective view of a gain attenuating member according to another embodiment of the present invention mounted on the planar satellite antenna 1 of FIG. 1.

The gain damping members 80 and 90 of this embodiment are provided with a cutoff filter 90 made of a conductive material. Examples of the conductive material used to fabricate the cutoff filter 90 include aluminum (Al), silver (Ag), lead (Pd), platinum (Pt), nickel (Ni), copper (Cu), and the like. The blocking filter 90 is made of any one or two or more alloys of these conductive materials.

The blocking filter 90 is formed in a long plate shape on one side, and the size of the blocking filter 90 is manufactured to block a part of the planar satellite antenna 1. For example, when the size of the planar satellite antenna 1 is 12 * 24 based on the number of horns 10, the planar satellite antenna 1 may be manufactured to a size enough to block 2 to 4 rows of horns 10. That is, the blocking filter 90 has a width and a length corresponding to a plurality of times of the horns 10, for example, in the case of the planar satellite antenna 1 whose number of horns 10 is 12 * 24, The width is formed about 2 to 8 times the width of the horn 10, the length is formed about 12 to 24 times the width of the horn 10.

When the size of the blocking filter 90 is adjusted in this way, the number of blocked horns 10 of the planar satellite antenna 1 is changed, and accordingly, the degree of attenuation of the gain of the planar satellite antenna 1 can be adjusted. That is, as the number of horns 10 blocked by the blocking filter 90 increases, the degree of attenuation of the gain of the planar satellite antenna 1 increases, and the number of horns 10 blocked by the blocking filter 90 increases. As it decreases, the degree of attenuation of the gain of the planar satellite antenna 1 is smaller.

When the cutoff filter 90 is installed in the planar satellite antenna 1, the cutoff filter 90 is mounted on the front surface of the planar satellite antenna 1, and at this time, the cutoff filter 90 may be mounted at any position in front of the planar satellite antenna 1. The gain of the antenna can be attenuated.

Meanwhile, in the above-described embodiment, the case in which the cutoff filter 90 is formed in a long plate shape to one side has been described. However, the cutoff filter 90 may be formed in various shapes such as a cross shape and a frame shape having an open edge at the center thereof. Of course.

A process of optimally adjusting the reception angle of the antenna 1 by using the gain damping members 80 and 90 including the blocking film 80 or the blocking filter 90 according to the above configuration will be described with reference to FIG. 5. same.

First, the above-described blocking film 80 or blocking filter 90 is attached to the front surface of the planar satellite antenna 1 (S501). At this time, since the blocking film 80 or the blocking filter 90 is temporarily mounted only when the planar satellite antenna 1 is installed, the blocking film 80 or the blocking filter 90 is preferably fixed with a sticker, a scotch tape, a double-sided tape, or the like.

Then, the planar satellite antenna 1 is connected to an output device such as a computer or a television or a dedicated monitor capable of outputting a broadcast signal (S502), so that the front surface of the planar satellite antenna 1 faces the side where the satellite is located. Place it.

Then, the elevation angle and azimuth angle of the planar satellite antenna 1 are adjusted while observing the image quality of the screen displayed on the monitor. As described above, the planar satellite antenna 1 is moved up and down and to the left and right, thereby finding a position having good image quality (S503). In this case, the good quality means that the viewer can easily and comfortably view the screen.

If a position having good image quality is found with respect to the planar satellite antenna 1, the planar satellite antenna 1 is fixed to the position (S504). Then, the blocking film 80 or the blocking filter 90 is detached from the planar satellite antenna 1 (S505).

As described above, the gain attenuation members 80 and 90 using the blocking film 80 or the blocking filter 90 according to the present invention are attached to the front surface when the planar satellite antenna 1 is installed to attenuate the gain of the antenna. Do it. Therefore, since the reception performance of the planar satellite antenna 1 is reduced by the gain attenuation members 80 and 90, the reception of the satellite signal becomes good only when the reception angle of the antenna is located within the allowable range toward the satellite direction. Accordingly, the reception angle of the planar satellite antenna 1 can be set more accurately, and the gain of the planar satellite antenna 1 is improved even when weather conditions such as a typhoon or storm are deteriorated or the reception angle is changed by an external shock. Since the large and the reception performance is good, the deterioration of the image quality of satellite broadcasting does not occur. In other words, it is possible to always watch satellite broadcasts with excellent image quality.

As described above, according to the present invention, the reception angle of the planar satellite antenna can be set accurately, so that even if the weather conditions are deteriorated or the reception angle is changed by an external impact, the satellite broadcasting with clear image quality can be viewed.

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 defined not only by the claims below, but also by the equivalents of the claims.

Claims (7)

delete delete delete delete delete Mounting a gain attenuation member on the front of the antenna; Connecting the antenna to an output device; And And adjusting the reception angle of the antenna based on the image quality of the screen displayed through an output device. The method of claim 6, wherein the adjusting of the reception angle of the antenna is performed by adjusting the reception angle of the antenna when the screen quality is good.

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