KR100704306B1 - Antenna - Google Patents

Abstract

The present invention relates to an antenna capable of improving communication quality by attenuating the reflected wave received by the antenna by improving the reflector of the antenna, and includes a transceiver and a transceiver formed in a concave shape located inside the transceiver and coupled to the rear of the transceiver. The auxiliary reflector is mounted on the lower part of the reflector and extends in front of the reflector along the longitudinal direction of the transceiver, and includes a fastening member supporting the connection between the reflector and the auxiliary reflector.

Antenna, Reflector, Auxiliary Reflector

Description

ANTENNA {ANTENNA}

1 and 2 are perspective views illustrating a state in which the auxiliary reflector of the antenna according to the embodiment of the present invention is coupled to the reflector.

3 and 4 are perspective views showing the configuration of the auxiliary reflector of the antenna according to an embodiment of the present invention.

5 to 7 are diagrams illustrating a coupling relationship between an auxiliary reflector and a reflector of an antenna according to an exemplary embodiment of the present invention.

8 is a pattern diagram illustrating a change in radiation pattern of an antenna in a state in which an auxiliary reflector according to an embodiment of the present invention is not mounted.

9 is a pattern diagram illustrating a change in radiation pattern of an antenna in a state in which an auxiliary reflector is mounted according to an exemplary embodiment of the present invention.

10 and 11 are pattern diagrams comparing the vertical pattern change of the antenna for each frequency in the state in which the auxiliary reflector according to the embodiment of the present invention is mounted.

12 is a view comparing voltage standing wave ratio (VSWR) with respect to an antenna in a state in which an auxiliary reflector according to an embodiment of the present invention is mounted or not.

<Description of the symbols for the main parts of the drawings>

10; First member 12; Second member

14; Third member 20; Fourth member

22; Fifth member 24; 6th member

30; First ring 32; Second ring

The present invention relates to an antenna, and more particularly, to an antenna capable of reducing reflected waves received by an antenna by improving a coupling position of a reflector and an antenna and a mounting state of the reflector.

In general, when a certain distance is dropped in a wireless communication environment, unlike a theoretical transmission distance, connection and data exchange are not properly performed. For this reason, the antenna can be used to extend the transmission distance and bandwidth of the wireless data, so that wireless communication can be performed even at a greater distance. Antennas can be classified into directional antennas and omnidirectional antennas.

As described above, the antenna is an apparatus for effectively transmitting and receiving radio waves, and more precisely, an antenna is an apparatus for effectively converting vibration of high frequency current into radio waves.

Antennas vary in shape from short conductors that connect to wireless microphones to large parabolic antennas for satellite communications.

However, there is a limit to the diversity in designing and optimizing base stations (cells, cells) with existing antenna types to suit various wireless environments.

In addition, when developing various antennas for each wireless environment, it causes considerable time and cost, and even if the development is completed and used, there is a limit in producing and selling continuously because the quantity is not used.

For this reason, it is difficult to order antenna manufacturers to develop various antennas for each wireless environment, and antenna manufacturers are not actively participating in the development because they cannot ignore the research and development costs and marketability for future sales.

For example, in an island area, when a radio wave transmitted from a transmitting antenna is received by the receiving antenna, both a direct wave propagated directly from the transmitting antenna and a reflected wave reflected from an adjacent vicinity can be received. In this case, in most propagation environments, the reflected wave signal is inferior to that of the direct wave signal, which does not significantly affect the call quality.

However, at the seaside, the influence of the reflected wave signal is relatively different from that of the island. In particular, the reflection wave of the sea surface during the tidal tide causes a lot of effects on the mobile communication environment, and it is difficult to suppress the reflected wave with the existing antenna characteristics, so there is a problem that there is some limitation in service for the changed wireless environment.

An object of the present invention is to provide an antenna that can improve the call quality by attenuating the reflected wave received by the antenna by improving the reflector of the antenna.

In order to achieve the above object, the present invention is formed in a concave shape of the transceiver, the transceiver is located inside the reflection plate coupled to the rear of the transceiver, mounted on the lower portion of the reflector extending in the front of the reflector along the longitudinal direction of the transceiver The auxiliary reflector is formed, characterized in that it comprises a fastening member for supporting the connection of the reflector and the auxiliary reflector.

In the above configuration, the transceiver may be located at the center of the reflector.

The reflecting plate is formed of a closed member having a long side and a short side corresponding to each other, forming an outer shape of the reflecting plate, and a second side arranged at equal intervals inside the first member so that both ends are connected to the long side of the first member, respectively. Both ends of the member and the inside of the first member are respectively connected to the short sides of the first member, and include a third member that supports the second member.

The long side of the first member may be bent in an inwardly concave shape along the longitudinal direction, and the short side of the first member may be bent into an outwardly convex shape along the longitudinal direction.

The first member and the second member may have a cylindrical shape, and an outer diameter of the first member may be larger than an outer diameter of the second member.

The auxiliary reflecting plate forms an outer shape of the auxiliary reflecting plate and is formed of a closed member having long and short sides corresponding to each other so as to correspond to the lower shape of the reflecting plate. A fifth member connected to the long side of the second member, and both ends of the fourth member are respectively connected to the short side of the fourth member, and include a sixth member supporting the fifth member.

Both sides of the long side of the fourth member may be bent upward with a set angle, and both sides of the fourth member may be bent to correspond to the short side shape of the first member.

The fourth member and the fifth member are formed in a cylindrical shape, and the outer diameter of the fourth member may be larger than the outer diameter of the fifth member.

The fastening member is integrally coupled to the auxiliary reflecting plate and includes a connecting ring connected to the reflecting plate, and a fixing band for supporting the coupling state of the auxiliary reflecting plate and the reflecting plate connected by the connecting ring.

The connecting ring is formed in a shape in which the cylinder is partially divided in the circumferential direction and is opened, and the opening direction is toward the reflecting plate, and the opened rear side is integrally coupled to the auxiliary reflecting plate.

The connection ring includes a first ring coupled to one side of the long side of the auxiliary reflector to correspond to the lower long side of the reflector, and a second ring coupled to one side of the long side of the auxiliary reflector to correspond to the lower short side of the reflector on both sides of the first ring. do.

The connecting ring is formed of an elastic body, the inner diameter of the connecting ring may be formed larger than the outer diameter of the portion in which the connecting ring is mounted on the reflector.

And, the length of the open portion of the connecting ring may be formed smaller than the inner diameter of the connecting ring.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. While many specific details, such as the following description and the annexed drawings, are shown to provide a more general understanding of the invention, these specific details are illustrated for the purpose of explanation of the invention and are not meant to limit the invention thereto. And a detailed description of known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

1 and 2 are perspective views showing a state in which the auxiliary reflecting plate of the antenna according to the embodiment of the present invention is coupled to the reflecting plate, and FIGS. 3 and 4 show the configuration of the auxiliary reflecting plate of the antenna according to the embodiment of the present invention. Perspective view.

An auxiliary reflector configuration of an antenna according to an exemplary embodiment of the present invention will be described with reference to FIGS. 1 to 4.

An embodiment of the present invention includes a transceiver, a reflector, an auxiliary reflector, and a fastening member, and may be configured by a directional grid antenna. In this case, the direction of propagation spreads out in a fan shape. In the case of a directional antenna, the transmission rate is excellent and long distance transmission is possible, but there is a disadvantage in that reception is not properly performed in a blind spot due to the limitation of the transmission width. In particular, when using a frequency conversion repeater (including M / W, RF optical repeater) used in the island area by the sea, the reception signal level of the link signal is changed by the difference between the tide level. This acts as a factor that dynamically changes the coverage of the repeater, which causes a lot of influence on the call quality on the coast.

The embodiment of the present invention may be configured to ensure a more stable customer haptic call quality by improving the call quality on the shore by configuring the auxiliary reflector on the reflector of the antenna.

The problem of the call quality on the coast occurs when the path of the reflected wave changes according to the tides only when the sea level height difference occurs largely during tides. That is, as the path of the reflected wave changes, the phase (wavelength) difference between the direct wave and the reflected wave also changes, and the reception level is dynamically changed according to the high and low tide.

At this time, if the wavelength generated between the direct wave and the reflected wave is 1/2 wavelength difference, the minimum level is generated. The maximum level occurs when the wavelength generated between the direct wave and the reflected wave is different from the integral wavelength. According to the exemplary embodiment of the present invention, the quality of the customer experience call can be improved by attenuating the reflected wave reflected from the sea surface through the auxiliary reflector mounted on the lower part of the reflector.

That is, by configuring the auxiliary reflector at the lower end of the transceiver using the antenna radiation pattern characteristics of the up and down direction with respect to the reflector of the antenna, it is possible to minimize the level of the reflected wave received from the lower direction of the transceiver.

The reflecting plate includes a first member 10, a second member 12, and a third member 14, and is formed in a concave shape in which the transceiver is located inside and coupled to the rear of the transceiver. The transceiver is located at the center of the reflector. The antenna according to the embodiment of the present invention may use a grid parabolic method used as a link antenna of a repeater for most islands.

The first member 10 forms an outer shape of the reflecting plate and is formed as a closed curve having a long side 10a and a short side 10b corresponding to each other.

The second member 12 is arranged at equal intervals inside the first member 10 so that both ends thereof are connected to the long side 10a of the first member 10, respectively. The first member 10 and the second member 12 may be joined by welding.

Both ends of the third member 14 are connected to the short sides 10b of the first member 10 inside the first member 10, and support the second member 12. The first member 10, the third member 14, the second member 12, and the third member 14 may be joined by welding, respectively.

In the above configuration, the long side 10a of the first member 10 is bent inwardly concave along the longitudinal direction, and the short side 10b of the first member 10 is bent outwardly convex along the longitudinal direction. do.

The first member 10 and the second member 12 are formed in a cylindrical shape, and the outer diameter of the first member 10 is larger than the outer diameter of the second member 12.

As described above, the reflector according to the embodiment of the present invention is formed in a grid wire manner, and may reduce the influence of strong wind pressure resistance and snow cover, and the weight and volume of the reflector itself. Therefore, when the reflector is formed in a grid wire manner as in the embodiment of the present invention, it can be used on the shore with a lot of wind influence.

As described above, the reflective plate is formed in such a manner that the plurality of second members 12 are coupled to the inside of the first member 10, and the through-holes between the second members 12 are arranged at equal intervals. Here, the interval of the through hole between the second member 12 may be formed differently depending on the wavelength of the desired frequency. For example, the gap between the holes between the second members 12 may be formed to have a length of wavelength / 10.

The auxiliary reflecting plate includes a fourth member 20, a fifth member 22, and a sixth member 24 and is mounted on the lower portion of the reflecting plate to extend in front of the reflecting plate along the longitudinal direction of the transceiver. The auxiliary reflector of the antenna according to the embodiment of the present invention can also be used in a grid parabolic manner as with the reflector.

The fourth member 20 is formed as a closed curve having the long side 20a and the short side 20b corresponding to each other so as to form an outer shape of the auxiliary reflecting plate and correspond to the lower shape of the reflecting plate.

The fifth member 22 is arranged at equal intervals inside the fourth member 20 so that both ends are connected to the long side 20a of the fourth member 20, respectively. The fourth member 20 and the fifth member 22 may be joined by welding.

Both ends of the sixth member 24 are connected to the short sides 20b of the fourth member 20 inside the fourth member 20, and support the fifth member 22. The fourth member 20, the fifth member 22, the fifth member 22, and the sixth member 24 may be joined by welding, respectively.

In the above configuration, both sides of the long side 20a of the fourth member 20 are bent upward with a set angle. That is, both sides of the long side 20a of the fourth member 20 are bent to correspond to the shape of the short side 10b of the first member 10.

The fourth member 20 and the fifth member 22 are formed in a cylindrical shape, and the outer diameter of the fourth member 20 is larger than the outer diameter of the fifth member 22.

As described above, the auxiliary reflector according to the embodiment of the present invention may be formed in a grid wire manner, and may reduce the weight and volume of the auxiliary reflector itself and the influence of the strong wind pressure resistance and snow cover, such as the reflector. Therefore, it can be used in the coastal area with a lot of wind influence.

As described above, the auxiliary reflecting plate is formed in such a manner that the plurality of fifth members 22 are coupled to the inside of the fourth member 20, and the through holes between the fifth members 22 are arranged at equal intervals. Here, the interval of the through hole between the fifth member 22 may be formed differently according to the wavelength of the desired frequency. For example, the gap of the through hole between the fifth members 22 may be formed to have a length of wavelength / 10.

The fastening member connects the reflector and the auxiliary reflector to each other to support the connection of the reflector and the auxiliary reflector.

The fastening member includes a connection ring and a fixing band 40.

The link ring includes a first ring 30 and a second ring 32 and is integrally coupled to the auxiliary reflecting plate and connected to the reflecting plate. The linkage may be welded to the secondary reflector.

The first ring 30 is coupled to one side of the long side 20a of the fourth member 20 of the auxiliary reflector so as to correspond to the long side 10a of the lower side of the first member 10 of the reflector.

The second ring 32 is coupled to one side of the long side 20a of the fourth member 20 of the auxiliary reflector so as to correspond to the lower short side 10b of the first member 10 of the reflector on both sides of the first ring 30. do.

The fixing band 40 supports the coupling state of the auxiliary reflector and the reflector connected by the connecting ring.

5 to 7 are diagrams illustrating a coupling relationship between an auxiliary reflector and a reflector of an antenna according to an exemplary embodiment of the present invention.

5 to 7, the connecting rings 30 and 32 are formed in a shape in which the cylinder is partially divided in the circumferential direction and is opened, and the open direction is opened toward the first member 10 coupled to the reflecting plate. The side is integrally coupled to the fourth member 20 of the auxiliary reflecting plate.

The connecting rings 30 and 32 are formed of an elastic body, and the inner diameter d1 of the connecting rings 30 and 32 is larger than the outer diameter D of the first member 10. The inner diameter d1 of the connecting rings 30 and 32 and the outer diameter D of the first member 10 may have the same size. In addition, the opening length d2 of the connection rings 30 and 32 is smaller than the inner diameter d1 of the connection rings 30 and 32. In addition, the length d2 of the opening forming the connection rings 30 and 32 is smaller than the outer diameter D of the first member 10.

In the above-described configuration, the connecting rings 30 and 32 integrally coupled to the fourth member 20 have an opening when they are coupled to the first member 10 in the vertical direction as shown in FIG. 6. Subsequently, in the state where the outer diameter D of the first member 10 is in contact with the inner diameter d1 of the connecting rings 30 and 32, the opened portion of the opening is restored to its original position by the elastic force. Thus, as shown in FIG. 7, the first member 10 is connected to the fourth member 20 through the connecting rings 30 and 32.

8 is a pattern diagram of a change in radiation pattern of an antenna in a state in which an auxiliary reflector is not mounted according to an embodiment of the present invention, and FIG. 9 is a diagram in which the antenna is mounted in an auxiliary reflector according to an embodiment of the present invention. The pattern diagram which measured the change of the radiation pattern with respect to.

According to an embodiment of the present invention, the auxiliary reflector was fabricated and coupled to the reflector to examine the radiation pattern characteristics of the antenna. As shown in the comparison between FIGS. 8 and 9, it can be seen that the auxiliary reflector affects the antenna vertical pattern. .

As a result of examining the antenna characteristics and field test, it can be seen that when the antenna is equipped with an auxiliary reflector, the influence of the sea level reflected wave is improved from about 10 dB to about 5 to 6 dB. That is, the field reception intensity (RSSI) before the auxiliary reflector was mounted showed a variation of about 10dB. After the installation of the auxiliary reflector, the field reception intensity decreased to within 5-6dB. In addition, the improvement method using the auxiliary reflector has the advantage of easy field application.

8 and 9, the auxiliary reflector mainly affects the vertical pattern. That is, there is a radiation suppression effect downward.

However, it is suppressed only at an angle of more than 30 degrees, and the effect at an angle smaller than 30 degrees is insignificant. In addition, it can be seen that the gain is slightly increased as the beam width is narrowed by 0.3 to 0.4 degrees.

10 and 11 are pattern diagrams comparing the vertical pattern change of the antenna for each frequency in the state in which the auxiliary reflector according to the embodiment of the present invention is mounted.

12 is a view comparing voltage standing wave ratio (VSWR) with respect to an antenna in a state in which an auxiliary reflector according to an embodiment of the present invention is mounted or not.

Standing wave refers to a stationary wave generated when a traveling wave merges with a wave returned by a boundary.

Voltage standing wave ratio (VSWR) according to the present invention is a ratio of the minimum value and the maximum value of the standing surface standing wave, which is an index indicating how large the standing wave is. The voltage (V) is attached to the expression in the electrical (electronic) circuit, the radio frequency (RF) is mainly called the voltage standing wave ratio (VSWR).

Since the standing wave is proportional to the reflection amount, the voltage standing wave ratio VSWR is used as another indicator of the reflection amount of the circuit input terminal.

If there is no reflection at all, there is no standing wave, so the ratio is 1, the best value, and if the amount of reflection is very large, the voltage standing wave ratio (VSWR) will go to infinity.

Referring to FIG. 12, it can be seen that the voltage standing wave ratio VSWR fluctuates slightly with and without the auxiliary reflector. This is because the measurement conditions were conducted in a limited space, such as an anechoic chamber, and in most cases, if the product is expected to be optimized at the time of shipment, there is a possibility that it will change in a bad direction.

On the other hand, the detailed description of the present invention has been described with reference to specific embodiments, of course, various modifications are possible without departing from the scope of the invention.

In the above-described embodiment of the present invention, the configuration of the fastening member has been described as a combination of a coupling ring and a fixing band, but a person having ordinary knowledge in the art may change the configuration of the fastening member into various forms. .

For example, the fastening member may be configured as a clamp. In this case, the shape of the clamp is preferably a shape that supports the connection between the reflecting plate and the auxiliary reflecting plate, as in the present invention, and preferably has a fastening force that can withstand strong winds, such as the shore.

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.

As described above, the antenna according to the present invention has the effect of improving the radiation pattern of the antenna by reducing the influence of the reflected wave received by the auxiliary reflector is reflected from the sea surface.

Claims (18)

A transceiver; A reflection plate formed in a concave shape positioned inside the transceiver and coupled to a rear side of the transceiver; An auxiliary reflector mounted below the reflector to extend in front of the reflector along a longitudinal direction of the transceiver; And a fastening member supporting the connection of the reflector and the auxiliary reflector. The method of claim 1, The transceiver is located in the center of the reflector plate. The method of claim 1, The reflector is A first member forming an outer shape of the reflecting plate and formed of a closed curve having long sides and short sides corresponding to each other; A second member arranged at equal intervals inside the first member and having both ends connected to the long sides of the first member, respectively; Both ends of the inside of the first member is connected to the short side of the first member, the antenna including a third member for supporting the second member. The method of claim 3, The long side of the first member is bent in an inwardly concave shape along the longitudinal direction. The method of claim 3, The short side of the first member is bent antenna in a convex shape to the outside in the longitudinal direction. The method of claim 3, And the first member and the second member are formed in a cylindrical shape. The method of claim 6, And an outer diameter of the first member is larger than an outer diameter of the second member. The method of claim 3, The auxiliary reflector is A fourth member which forms an outer shape of the auxiliary reflecting plate and is formed of a closed curve having long sides and short sides corresponding to each other so as to correspond to a lower shape of the reflecting plate; A fifth member arranged at equal intervals inside the fourth member and having both ends connected to the long sides of the fourth member, respectively; Both ends of the fourth member inside the antenna is connected to the short side of the fourth member, the antenna comprising a sixth member for supporting the fifth member. The method of claim 8, Both sides of the long side of the fourth member are bent upwards at a predetermined angle. The method of claim 8, Both sides of the long side of the fourth member are bent to correspond to the short side shape of the first member. The method of claim 8, The fourth member and the fifth member is formed in a cylindrical shape. The method of claim 11, And an outer diameter of the fourth member is larger than an outer diameter of the fifth member. The method of claim 1, The fastening member is A connecting ring integrally coupled to the auxiliary reflector and connected to the reflector; And a fixing band for supporting a coupling state of the auxiliary reflector and the reflector connected by the connection ring. The method of claim 13, The link And a cylinder formed in an open shape by partially dividing the cylinder in the circumferential direction, the opening direction of which is directed toward the reflecting plate, and the open back side is integrally coupled to the auxiliary reflecting plate. The method of claim 14, The link A first ring coupled to one side of the long side of the auxiliary reflecting plate to correspond to the bottom long side of the reflecting plate; And a second ring coupled to one side of a long side of the auxiliary reflector so as to correspond to a lower short side of the reflector on both sides of the first ring. The method of claim 14, The connecting ring is formed of an elastic body. The method of claim 14, The inner diameter of the connecting ring is larger than the outer diameter of the portion in which the connecting ring is mounted on the reflecting plate. The method of claim 14, The length of the open portion of the link is less than the inner diameter of the link.

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