KR102016013B1 - Antenna for Radiation of Omni Directional - Google Patents

Abstract

The present invention relates to an omnidirectional radiation antenna for Wi-Fi communications with multiple bands, comprising: an antenna support structure (10) including an upper plate (11), a lower plate (14), a central flat plate (15), a left upper support protrusion (17), a left lower support protrusion (18), a right upper support protrusion (20) and a right lower support protrusion (21); a first antenna (31) fixatedly installed at the right rear side on the surface of the upper plate (11); a second antenna (32) fixatedly installed at a left front corner on the surface of the upper plate (11); a third antenna (33) fixatedly installed between the left upper support protrusion (17) and the left lower support protrusion (18); a fourth antenna fixatedly installed between the left upper support protrusion (20) and the right lower support protrusion (21); a first patch antenna (35) fixedly coupled to a plurality of first support members (24) protruding forwards from a reflection plate (23) fixatedly installed on a front surface of the central flat plate (15); and a second patch antenna (36) fixedly coupled to a plurality of first support members (25) protruding backwards from the reflection plate (23). The present invention omnidirectionally installs a plurality dipole antennas and directional patch antennas to omnidirectionally transmit and receive frequencies with multiple bands, thereby removing the interference of radio waves or dead zones from a predetermined space.

Description

Antenna for Radiation of Omni Directional

The present invention relates to an antenna, and more particularly to an omni-directional radiation antenna for multi-band Wi-Fi communication.

In general, as a basic antenna, a dipole antenna (b) has two poles that bend different conductors and have a total length of λ / 2 wavelength so that an omni-directional beam pattern is formed. Different array antennas are used in base station antennas than single dipole antennas. For example, a Yagi-Uda antenna, which is an antenna for TV reception, is an array antenna made of various combinations of dipole antennas. Patch antennas are also referred to as microstrip antennas because they can be made by directing metal patterns on a microstrip substrate in a rectangular or circular manner and then feeding them in various forms. The patch antenna can bring out various characteristics through small size, light weight characteristics, various pattern adjustment and easy arrangement.

In addition, beam-forming enables the beam of the antenna to reach a specific terminal, and may adjust the strength and direction of the signal. The router knows the approximate location of the devices and switches the antennas in the proper location.

Conventionally, the external array antenna can adjust the maximum gain according to the number of patterns arranged, the same coverage as the horizontal direction of the mounted antenna, it is possible to turn the antenna in the horizontal direction even if the set up or lying down. In contrast, the built-in dipole antenna has the highest gain and radiation pattern depending on the set ground conditions. In addition, once the antenna is determined, the coverage is fixed so that the radiation pattern cannot be changed, and in order to change the coverage, the set position must be changed in the maximum gain direction.

As a prior art related to the present invention, Patent Document 1 is a substrate; A ground layer disposed on a bottom surface of the substrate; A patch antenna unit disposed on an upper surface of the substrate and configured to supply a signal to be radiated; And a three-dimensional structure antenna unit for emitting a signal from the patch antenna unit, wherein the three-dimensional structure antenna unit includes a planar pattern unit spaced apart from the patch antenna unit by a predetermined distance; A shorting leg extending from the planar pattern portion toward the patch antenna portion and shorted to the patch antenna portion; An antenna structure is disclosed that includes one or more floating legs extending from one end of the planar pattern portion toward the patch antenna portion, wherein the one or more floating legs are configured to support the planar pattern portion with the shorting leg.

Republic of Korea Patent Publication No. 10-1690259 (announced on 28 December 2016)

SUMMARY OF THE INVENTION In view of the above situation, an object of the present invention is to have a multi-directional Wi-Fi band frequency antenna using a dipole antenna and a directional patch antenna for omnidirectional beam pattern and directing in a specific direction.

The present invention, in order to achieve the above object, the upper plate installed in the upper portion, the lower plate provided in the lower portion at a predetermined interval with the upper plate, the central flat plate installed vertically between the upper plate and the lower plate, and the lower side of the upper plate and the rear bottom An upper left support protrusion protruding toward the upper surface, a lower left support protrusion protruding upwardly facing the upper left support protrusion on the left and rear sides of the lower plate, and an upper right support protrusion protruding downward on the right and front bottom surfaces of the upper plate and the upper plate; An antenna support structure formed on a lower right side and a front side of the lower right support protrusion protruding upwardly facing the upper right support protrusion; A first antenna fixed to the right and rear corners of the top plate; A second antenna fixedly installed at a left side and a front side corner of the top plate; A third antenna fixedly installed between the upper left support protrusion and the lower left support protrusion; A fourth antenna fixedly installed between the upper right support protrusion and the lower right support protrusion; A first patch antenna fixedly coupled to the plurality of first supporting members protruding forward from the reflecting plate fixed to the front of the center plate; A second patch antenna fixedly coupled to the plurality of second supporting members protruding from the reflecting plate, wherein the first antennas 31 to 4 antennas 34 or the third antennas 33 and 4 The antenna 34, the first patch antenna 35, and the second patch antenna 36 are installed at positions and directions for avoiding mutual interference due to isolation, and transmit and receive frequencies of a plurality of bands in an omnidirectional manner. It is characterized by providing a radiation antenna.

In addition, in the present invention, the first antenna 31 to the fourth antenna 34 may be composed of a dipole antenna.

In addition, in the present invention, the third antenna 33 and the fourth antenna 34 may be a dipole antenna, and the first patch antenna 35 and the second patch antenna 36 may be configured as directional antennas.

In addition, in the present invention, a first insertion protrusion for fixing and supporting the first antenna on the top plate surface, and a second insertion protrusion for fixing and supporting the second antenna on the top plate surface may be formed.

In addition, in the present invention, the lower plate may be configured in an H-shape.

In addition, in the present invention, a through hole may be formed in the center of the center plate.

In addition, in the present invention, a first slit for inserting and fixing a third antenna end portion to the left upper support protrusion and the left lower support protrusion is formed, respectively, and a fourth antenna end is inserted into the right upper support protrusion and the right lower support protrusion. The second slit for fixing and supporting can be formed, respectively.

Further, in the present invention, the antenna support structure is installed in the first antenna to the fourth antenna and the first patch antenna and the second patch antenna further includes a case body is installed on the upper inner side, the main body, RF boards, terminal blocks, connectors, speakers and microphones can be installed.

According to the present invention, a plurality of dipole antennas and directional patch antennas may be installed omnidirectionally to transmit and receive frequencies of multiple bands omnidirectionally, thereby eliminating interference or shadow space of radio waves in a predetermined space.

1 is a perspective view showing a support structure in which an omnidirectional radiation antenna is installed according to an embodiment of the present invention.
2 is a diagram illustrating the installation distance and position of the omnidirectional radiation antenna according to the present invention.
3 and 4 is a diagram showing the radiation characteristics of the antenna installed in the corresponding position in the omnidirectional radiation antenna according to the present invention.
5 and 6 is a graph simulating the isolation in the omnidirectional radiation antenna according to the present invention.
7 and 8 are perspective views illustrating a set to which the omni-directional radiation antenna according to the present invention is applied.

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

1A and 1B, a plurality of antennas are installed on the top, left, right and front and rear surfaces of the antenna support structure 10, respectively.

The antenna support structure 10 is provided with an upper plate 11 at an upper portion, and a lower plate 14 at a predetermined distance from the upper plate 11 at a lower portion thereof. The lower plate 14 is substantially H-shaped. The central flat plate 15 is vertically installed between the upper plate 11 and the lower plate 14. The central plate 15 is installed to face the front and the back. The through hole 16 is formed in the center of the central plate 15.

In addition, the left upper support protrusion 17 protrudes to a predetermined length downward on the left and rear bottom surfaces of the upper plate 11, and the upper left and rear support protrusions 17 on the left and rear sides of the lower plate 14 face upwards. The lower left support protrusion 18 is formed to protrude to a predetermined length. In addition, the right upper support protrusion 20 protrudes to a predetermined length downward on the right side and the front bottom face of the upper plate 11, and faces the upper right support protrusion 20 on the right side and the front side of the lower plate 14 to face upwards. The lower right support protrusion 21 is formed to protrude to a predetermined length.

The first antenna 31 is fixedly installed at the right side and the rear side corner of the top plate 11, and the second antenna 32 is fixedly installed at the left side and the front side corner of the top plate 11. The first insertion protrusion 12 for fixing and holding the first antenna 31 protrudes from the top plate 11 surface, and the second insertion protrusion 13 for fixing and supporting the second antenna is formed on the top plate 11 surface. Each is formed to protrude.

The third antenna 33 is fixedly installed between the upper left support protrusion 17 and the lower left support protrusion 18. At this time, a first slit 19 is formed at each end of the upper left support protrusion 17 of the upper plate 11 and the lower left support protrusion 18 of the lower plate, and an upper end and a lower end of the antenna are inserted into the first slit 19. And fixedly coupled. The fourth antenna 34 is fixedly installed between the upper right support protrusion 20 and the lower right support protrusion 21. In this case, second slits 22 are formed at ends of the upper right support protrusion 20 of the upper plate 11 and the lower right support protrusion 21 of the lower plate, respectively, and the upper and lower ends of the antenna are inserted into the second slits 22. And fixedly coupled. Dipole antennas are applied to the first antennas 31 to 34.

The first patch antenna 35 is fixedly coupled to the plurality of first supporting members 24 protruding forward from the reflecting plate 23 fixedly installed on the front surface of the central flat plate 15. The second patch antenna 36 is fixedly coupled to the plurality of second support members 25 protruding backward from the reflector plate 23. The directional antenna is applied to the first patch antenna 35 and the second patch antenna 36.

Furthermore, the first antennas 31 to 4 antenna 34, the first patch antenna 35 and the second patch antenna 36 installed on the antenna support structure 10 avoid mutual interference due to isolation. It is installed at a position and a direction for transmitting and receiving frequencies of a plurality of bands respectively in an upward direction, a left direction, a right direction, a front direction, and a rear direction. In addition, it is desirable to secure a peak gain of about 20 dBi or more between the antennas.

In Fig. 2, the distance and position between the antennas in the cylinder are not preferably designed on the same line so as to avoid the beam peak. Furthermore, the spacing between antennas is preferably 1λ or more. For example, if the Wi-Fi frequency is 2.4GHz (2400MHz ~ 2484MHz), it is better to leave a space of about 125mm or more, and if the Wi-Fi frequency is 5GHz (5150MHz ~ 5850MHz), it is good to design a space of about 70mm or more.

Figure 3 shows a characteristic that the plurality of antennas installed in the antenna support structure radiates the Wi-Fi frequency in all directions. That is, in the first antenna 31 and the second antenna 32 installed on the upper plate 11 of the support structure 10, ring-shaped radiation characteristics radiated up, down, and front and rear around the antenna are shown, respectively, and the support structure 10 In the third antenna 33 installed on the left side and the fourth antenna installed on the right side, ring-shaped radiation characteristics radiated to the left and right and the front and rear of the antenna respectively appear.

In addition, FIG. 4 shows a first patch antenna 35 provided in front of the center plate 15 of the supporting structure 10 with the reflecting plate 23 interposed therebetween, and a second patch antenna 36 provided behind the reflecting plate 23. Is the radiation characteristic of. Moreover, the radiation characteristics of the first patch antenna 35 are strongly shown in front of the antenna, and the radiation characteristics of the first patch antenna 35 are also formed upward and downward. In addition, the radiation characteristics of the second patch antenna 36 are strongly shown at the rear with respect to the antenna, and at the same time, the radiation characteristics are somewhat formed upward and downward.

In Fig. 5, the graph simulating the isolation from the omnidirectional radiating antenna shows the degree of insertion loss in the transmission line moving from one antenna to the other antenna. You can judge that. In particular, FIG. 5 shows the isolation of four dipole antennas, and FIG. 6 shows the isolation of two dipole antennas and two directional patch antennas.

On the other hand, the radiation pattern of the first patch antenna 35 and the second patch antenna 36 by the reflecting plate 23 is the same magnitude of energy with the actual omnidirectional pattern, but the radiation pattern is directed to one side, the reflecting plate 23 The back has little energy. Moreover, since the antenna is frequency dependent, both transmission and reception improved in a specific direction without departing from the resonance frequency.

7 and 8 illustrate that the omnidirectional radiation antenna of the present invention is installed on a case body of an external antenna or electronic device having a predetermined size and shape, and the omnidirectional radiation antenna 30 inside the case body 40 is upper part. Is installed antenna support structure 10 is installed, the main board and the RF board is connected to the inside of the case body 40 by the connector is installed. In addition, a terminal block connected to an external device and a cable is installed under the case body 40. A battery may be built in the case body 40 to supply power for operation.

In addition, the case body 40 may be configured in the form of an external antenna or various electronic device sets, for example, speakers equipped with artificial intelligence (AI), to control various electric and electronic devices through dialogue with a user. . And the case body 40 is to transmit and receive a radio frequency free to move. In addition, the omnidirectional radiation antenna installed in the case body 40 can transmit and receive the Wi-Fi frequency in all directions, there is an advantage that can be used more conveniently in the office or house of a certain space.

While the invention has been shown and described in connection with specific embodiments thereof, it is to be understood that various modifications and variations can be made without departing from the spirit and scope of the invention as indicated by the claims. Anyone who owns it can easily find out.

DESCRIPTION OF SYMBOLS 10 Antenna support structure 11: Upper plate 12: 1st insertion protrusion 13: 2nd insertion protrusion 14: Lower plate 15: Center plate 16: Through hole 17: Upper left support protrusion 18: Lower left support protrusion 19: First slit 20: Upper right support protrusion 21: Lower right support protrusion 22: Second slit 23: Reflector 24: First support member 25: Second support member 30: Omnidirectional radiation antenna 31: First antenna 32: Second antenna 33: Third antenna 34: 4th antenna 35: 1st patch antenna 36: 2nd patch antenna 40: case body

Claims (8)

An upper plate 11 provided at an upper portion, a lower plate 14 provided at a lower portion with a predetermined distance from the upper plate 11, a central flat plate 15 installed vertically between the upper plate 11 and the lower plate 14, The left upper support protrusion 17 protruding downward on the left and rear bottom surfaces of the upper plate 11 and the left upper support protrusion 17 protruding upward on the left and rear sides of the lower plate 14. A lower support protrusion 18 and an upper right support protrusion 20 protruded downward on the right side and the bottom of the upper plate 11 and the lower right support plate 20 facing the right and front sides of the lower plate 14. An antenna support structure (10) consisting of a lower right support protrusion (21) formed to protrude upward;
A first antenna 31 fixedly installed at a right side and a rear side corner of the top plate 11;
A second antenna 32 fixedly installed at a left side and a front side corner of the top plate 11;
A third antenna 33 fixedly installed between the upper left support protrusion 17 and the lower left support protrusion 18;
A fourth antenna 34 fixedly installed between the upper right upper support protrusion 20 and the lower right support protrusion 21;
A first patch antenna 35 fixedly coupled to the plurality of first supporting members 24 forward from the reflecting plate 23 fixed to the front of the central flat plate 15;
The second patch antenna 36 fixedly coupled to the plurality of second support members 25 through the through-hole 16 in the reflective plate 23 fixed to the front of the central flat plate 15,
The first antenna 31 to the fourth antenna 34 or the third antenna 33, the fourth antenna 34, the first patch antenna 35 and the second patch antenna 36 are isolated (Isolation) Omnidirectional radiation antenna is installed at a position and a direction for avoiding mutual interference according to the).
The omni-directional radiation antenna according to claim 1, wherein the first antennas (31) to the fourth antennas (34) are composed of dipole antennas.
The omni-directional radiation antenna according to claim 1, wherein the third antenna and the fourth antenna are dipole antennas, and the first patch antenna and the second patch antenna are directional antennas.
The method of claim 1, wherein the first insertion protrusion 12 for fixing and supporting the first antenna 31 on the surface of the top plate 11, and the second insertion protrusion for fixing and supporting the second antenna on the surface of the top plate 11 An omnidirectional radiation antenna, wherein 13 are each protruded.
The omnidirectional radiation antenna according to claim 1, wherein the lower plate (14) has an H shape.
The omnidirectional radiation antenna according to claim 1, wherein a through hole (16) is formed in the center of the center plate (15).
According to claim 1, wherein the first slit (19) for inserting and fixing the end portion of the third antenna 33 in the upper left support protrusion (17) and the left lower support protrusion (18) is formed, respectively, the upper right An omnidirectional radiation antenna, each of which has a second slit 22 for fixing and supporting the end portion of the fourth antenna 34 in the support protrusion 20 and the lower right support protrusion 21, respectively.
The antenna support structure 10 of claim 1, wherein the first antenna 31 to the fourth antenna 34, the first patch antenna 35, and the second patch antenna 36 are installed inside the upper part. Further comprising a case body 40, the main body, the RF board, the terminal block, a connector, a speaker and a microphone is installed inside the case body 40, omnidirectional radiation antenna.

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