KR102016014B1 - 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 left frame (12), a right frame (13) and a reflection plate (15); a first flexible substrate (16) installed on a front surface between the upper plate (11) and the lower plate (14) and between the left frame (12) and the right frame (13) of the antenna support structure (10); a second flexible substrate (17) installed on a back surface between the upper plate (11) and the lower plate (14) and across the left frame (12) and the right frame (13) of the antenna support structure (10); a first antenna (31) fixatedly installed at the right rear side on a surface of the upper plate (11); a second antenna (32) fixatedly installed at a left front side on the surface of the upper plate (11); a third antenna (33) installed at the left front surface of the first flexible substrate (16); a fourth antenna (34) installed at the right front surface of the first flexible substrate (16); a first patch antenna (37) installed at a center on a front surface of the first flexible substrate (16); a fifth antenna (35) installed at a left side on a back surface of the second flexible substrate (17); a sixth antenna (36) installed at a right side on a back surface of the second flexible substrate (17); and a second patch antenna (38) installed at the center on a back surface of the first flexible substrate (17). The present invention omnidirectionally installs a plurality of dipole antennas and directional patch antennas to omnidirectionally transmit and receive frequencies with multiple bands, thereby removing 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, the lower plate provided in the lower portion at a predetermined interval with the upper plate, the left frame connected vertically to the left center of the upper plate and the lower plate, the right side of the upper plate and the lower plate An antenna support structure including a right frame vertically connected to a center and a reflector installed vertically between the upper and lower plates and in contact with the left and right frames; A first flexible substrate installed in front between the upper and lower plates of the antenna support structure and between the left frame and the right frame; A second flexible substrate provided on a rear surface between the upper and lower plates of the antenna support structure and from the left frame to the right frame; A first antenna fixed to the right rear side of the surface of the upper plate; A second antenna fixed to the front left side of the surface of the upper plate; A third antenna disposed on a front left side of the first flexible substrate; A fourth antenna installed on the front right side of the first flexible substrate; A first patch antenna installed at a front center of the first flexible substrate; A fifth antenna disposed on a left side of the rear surface of the second flexible substrate; A sixth antenna disposed on a right side of the rear surface of the second flexible substrate; A second patch antenna installed at a center of the rear surface of the second flexible substrate, wherein the first antenna, the second antenna, the third antenna, the fifth antenna, or the first antenna, the second antenna, the fourth antenna, and the sixth antenna Alternatively, the third antenna and the fifth antenna and the first patch antenna and the second patch antenna or the fourth antenna and the sixth antenna and the first patch antenna and the second patch antenna are selectively applied and isolated. It is installed in a position and direction for avoiding mutual interference according to the) characterized in that it provides an omnidirectional radiation antenna for transmitting and receiving the frequency of a plurality of bands omnidirectionally.

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

In addition, in the present invention, the third to sixth antennas are dipole antennas, and the first patch antenna and the second patch antenna may be configured as directional antennas.

In addition, in the present invention, the antenna support structure in which the first antenna to the sixth antenna and the first patch antenna and the second patch antenna is further provided, the case body is installed on the upper inner side, the main body on the lower inner case 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 is a view showing the radiation characteristics of the antenna installed in the corresponding position in the omnidirectional radiation antenna according to the present invention.
Figure 4 is a graph simulating the isolation in the omnidirectional radiation antenna according to the present invention.
5 and 6 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. In addition, the left frame 12 is vertically connected to the left center between the upper plate 11 and the lower plate 14. The right frame 13 is vertically connected to the right center between the upper plate 11 and the lower plate 14. The reflective plate 15 is vertically installed between the upper plate 11 and the lower plate 14 and in contact with the left frame 12 and the right frame 13. The antenna support structure 10 is in the shape of an elliptic cylinder having approximately both sides in an arc shape.

The first flexible substrate 16 is installed on the front surface between the upper plate 11 and the lower plate 14 of the antenna support structure 10 and between the left frame 12 and the right frame 13. The second flexible substrate 17 is installed on the rear surface between the upper plate 11 and the lower plate 14 of the antenna support structure 10 and from the left frame 12 to the right frame 13. The first flexible substrate 16 and the second flexible substrate 17 are flexible wiring boards and heat-resistant films such as polyimide film are applied.

The first antenna 31 is fixedly installed on the right side and the rear side of the top plate 11, and the second antenna 32 is fixedly installed on the left side and the front side of the top plate 11.

The third antenna 33 is installed on the front left side of the first flexible substrate 16, and the fourth antenna 34 is installed on the front right side of the first flexible substrate 16. The first patch antenna 37 is installed at the front center of the first flexible substrate 16.

In addition, the fifth antenna 35 is installed on the rear left side of the second flexible substrate 17, and the sixth antenna 36 is installed on the rear right side of the second flexible substrate 17. The second patch antenna 38 is installed at the front center of the second flexible substrate 17.

Furthermore, the first antennas 31 to 6 antennas 36, the first patch antennas 37 and the second patch antennas 38 are printed on the first flexible substrate 16 and the second flexible substrate 17, respectively. do. The first antennas 31 to 6 antennas 36 are dipole antennas, and the first and second patch antennas 37 and 38 are directional antennas. In addition, the third antennas 33 to 6th antennas 36 may be dipole antennas, and a directional antenna may be applied to the first patch antenna 37 and the second patch antenna 38.

Furthermore, the first antennas 31 to 6 antenna 36, the first patch antenna 37, and the second patch antenna 38 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. For example, the first antenna 31 and the second antenna 32 are basically applied to the third antenna 33 and the fifth antenna 35, or the first antenna 31 and the second antenna 35 are applied thereto. 32 is basically applied, and the fourth antenna 34 and the sixth antenna 36 may be applied thereto. In addition, the first patch antenna 37 and the second patch antenna 38, in addition to the third antenna 33 and the fifth antenna 35, or the fourth antenna 34 and the sixth antenna 36, In addition, the first patch antenna 37 and the second patch antenna 38 may be applied.

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 and the fifth antenna 35 and the fourth antenna 34 and the sixth antenna 36 installed on the right side, the ring-shaped radiates left and right and front and rear around the antenna, respectively. Radiation characteristics appear.

In addition, the radiation characteristics of the first patch antenna 37 installed at the front with the reflector plate 15 installed at the center of the support structure 10 appear strongly in front of the antenna, and at the same time, the radiation characteristics are also upward and downward. This is somewhat formed. In addition, the radiation characteristics of the second patch antenna 38 installed at the rear of the reflector plate 15 are strongly shown at the rear centering the antenna, and the radiation characteristics are somewhat formed upward and downward.

In Fig. 4, 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. 4 shows the isolation of four dipole antennas, and FIG. 5 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 reflector plate 15 is the same magnitude of energy with the actual omnidirectional pattern, but the radiation pattern is directed to one side, the reflector plate 15 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.

6 and 7 illustrate that the omnidirectional radiation antenna of the present invention is installed in a case body of a predetermined size and shape, and the antenna support structure 10 having the omnidirectional radiation antenna 30 installed inside the case body 40 is upper part. The built-in, the main body for the control and the RF board for the processing of the radio signal is installed in the lower case body 40. In addition, a terminal block connected to an external device and a cable may be 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 a speaker mounted with artificial intelligence (AI) to control various electrical and electronic devices through dialogue with the 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 Left frame 13: Right frame 14 Lower plate 15 Reflecting plate 16: 1st flexible board 17 2nd flexible board 30: Omnidirectional radiation antenna 31 1st antenna 32 2nd antenna 33 3rd antenna 34: 4th antenna 35: 5th antenna 36: 6th antenna 37: 1st patch antenna 38: 2nd patch antenna 40: case body

Claims (4)

The upper plate 11 installed in the upper portion, the lower plate 14 provided in the lower portion with a predetermined distance from the upper plate 11, and the left frame 12 connected vertically to the left center of the upper plate 11 and the lower plate 14 And a right frame 13 vertically connected to the right center of the upper plate 11 and the lower plate 14, between the upper plate 11 and the lower plate 14, and to the left frame 12 and the right frame 13. An antenna support structure (10) configured to be in contact with and vertically installed with a reflector (15);
A first flexible substrate 16 disposed between the upper plate 11 and the lower plate 14 of the antenna support structure 10 and in front of the reflector plate 15;
A second flexible substrate 17 provided between an upper plate 11 and a lower plate 14 of the antenna support structure 10 and a rear surface of the reflecting plate 15;
A first antenna 31 fixedly installed at the right rear side of the surface of the upper plate 11;
A second antenna 32 fixedly installed to the left front of the surface of the upper plate 11;
A third antenna 33 installed on the front left side of the first flexible substrate 16;
A fourth antenna 34 installed on the front right side of the first flexible substrate 16;
A first patch antenna 37 installed at the front center of the first flexible substrate 16;
A fifth antenna 35 disposed on the left side of the rear surface of the second flexible substrate 17;
A sixth antenna 36 installed on the rear right side of the second flexible substrate 17;
Including a second patch antenna 38 installed in the center of the back of the second flexible substrate 17,
The first antenna 31 and the second antenna 32, the third antenna 33 and the fifth antenna 35 or the first antenna 31 and the second antenna 32 and the fourth antenna 34 and The sixth antenna 36 is optionally applied,
Alternatively, the third antenna 33 and the fifth antenna 35 and the first patch antenna 37 and the second patch antenna 38 or the fourth antenna 34 and the sixth antenna 36 and the first patch antenna ( 37) and a second patch antenna (38) is selectively applied to the location and direction to avoid mutual interference according to the isolation (Isolation), omnidirectional radiation antenna to transmit and receive the frequency of a plurality of bands.
The omni-directional radiation antenna according to claim 1, wherein the first antennas (31) to sixth antennas (36) are made of dipole antennas.
The omni-directional radiation antenna according to claim 1, wherein the third antennas (33) to sixth antennas (36) are dipole antennas, and the first patch antenna (35) and the second patch antenna (36) are directional antennas.
The antenna support structure 10 of claim 1, wherein the first antenna 31 to the sixth antenna 36, the first patch antenna 37, and the second patch antenna 38 are installed inside the upper portion. 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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