KR20190046178A - Powerless Wi-Fi Extender - Google Patents

Abstract

Disclosed is a powerless Wi-Fi extension device transmitting and transferring an incident Wi-Fi signal, and comprising a first pattern module including a first support plane and a plurality of first conductive patterns disposed on both sides of the first support plane, and being attached to one surface of a base plate, and a plurality of second conductive patterns disposed on a second support plane and both sides of the second support plane, wherein the first pattern module and a second pattern module are disposed opposite to each other and spaced apart from each other.

Description

Powerless Wi-Fi Extender {Powerless Wi-Fi Extender}

The present invention relates to a powerless WiFi extension device that extends the transmission distance of a Wi-Fi signal without using power.

Wi-Fi devices are widely used in homes or offices, but when they are distant or obstacles such as walls, reception sensitivity of the Wi-Fi signal is low, and there is a problem that the network is disconnected and connected. A separate Wi-Fi amplifying device is used to increase the receiving sensitivity and the receiving distance of the Wi-Fi signal.

Currently used Wi-Fi amplifiers include various circuits for amplifying Wi-Fi signals and require power for driving the circuits. The WiFi amplifying device must be installed in a location where a receptacle or USB terminal is installed in order to receive power, and there is a limitation in the installation place.

An object of the present invention is to provide a power-free WiFi extension device that extends the transmission distance of a Wi-Fi signal without using power.

The power-free WiFi extension device of the present invention includes a first pattern module and a second support plate, the first pattern module including a first support plate and a plurality of first conductive patterns disposed on both sides of the first support plate, And a plurality of second conductive patterns disposed on both sides of the second support plate, wherein the first pattern module and the second pattern module are disposed opposite to each other and spaced apart from each other, and transmits the transmitted WiFi signal .

Further, the power-free WiFi extension device of the present invention further includes a case having a first face and a second face opposing to each other with an area corresponding to the area of the first pattern module, The second pattern module may be located on the inner surface of the second surface of the case.

The case includes a case body having the first surface and formed in a box shape opened in the direction of the second surface and a case cover coupled to the second surface, The second pattern module can be fixed and supported on the facing surface.

In addition, the case may be formed of a polymethacrylimide foam, teflon, polypropylene or polyvinyl chloride.

The first and second support plates may have a thickness of 0.4 to 1.2 mm and may be formed of a material such as polyimide, polystyrene, polyethylene, PDMS, or Teflon.

The first conductive pattern and the second conductive pattern are formed to a thickness of 20 to 60 탆, and may be formed of copper, silver, aluminum, gold, platinum, or nickel.

The first conductive pattern and the second conductive pattern may be formed into a circular ring shape, a square ring shape, a pentagonal ring shape, a hexagonal ring shape, or an octagonal ring shape.

The first conductive pattern and the second conductive pattern may be formed in a circular ring shape having an inner diameter of 20 to 30 mm and an outer diameter of 40 to 60 mm.

The first conductive patterns may be spaced apart from each other such that the distance between the centers of the first patterns adjacent to each other is 1.1 to 1.5 times the outer diameter of the first conductive pattern.

The power-free WiFi extension device of the present invention is easily installed at a required position on a wall inside a building, and can transmit a Wi-Fi signal over a longer distance.

Further, the power-free WiFi extension device of the present invention extends the transmission distance of the Wi-Fi signal by using the metal metapattern, so there is no need to supply power separately.

In addition, since the powerless WiFi extension device of the present invention does not require a wire or a plug for power supply, there is no restriction on the installation position.

1 is a perspective view of a power free WiFi extension device in accordance with an embodiment of the present invention.
2 is an exploded perspective view of the power free WiFi extension device of FIG.
3 is a vertical cross-sectional view of AA of FIG.
Figure 4 is a schematic diagram illustrating the operation of a powerless WiFi extension device installed within a building;
5 is a frequency distribution diagram of a Wi-Fi signal by the power-free Wi-Fi extension device of the present invention.
FIG. 6 is a graph showing the intensity distribution of a Wi-Fi signal in a state in which a power-free Wi-Fi extension device is not attached.
Figure 7 is a graph of the transmittance of the power free WiFi extender of the present invention.
8 is a graph of the relative transmittance of the power free WiFi extender of the present invention.
9 is an S-parameter graph of the power-free WiFi extension device of the present invention.

Hereinafter, a non-power WiFi extension device according to an embodiment of the present invention will be described with reference to the accompanying drawings.

First, a structure of a power-free WiFi extension device according to an embodiment of the present invention will be described.

1 is a perspective view of a power free WiFi extension device in accordance with an embodiment of the present invention. 2 is an exploded perspective view of the power free WiFi extension device of FIG. 3 is a vertical sectional view taken along line A-A of Fig.

1 to 3, the powerless WiFi extension device 100 according to an exemplary embodiment of the present invention includes a case 110, a first pattern module 120 and a second pattern module 130 .

The powerless WiFi extension device 100 can receive the first pattern module 120 and the second pattern module 130 in parallel to each other in the case 110. [ The power free WiFi extension device 100 may be spaced apart from the first pattern module 120 and the second pattern module 130 while being fixed to one inner surface and the other inner surface of the case 110. The power free WiFi extension device 100 may control the separation distance between the first pattern module 120 and the second pattern module 130 by adjusting the depth of the case 110. The powerless WiFi extension device 100 can transmit a WiFi signal incident on one side to the other side and transmit the WiFi signal to a farther side. The first pattern module 120 and the second pattern module 130 may be spaced 60 to 90 mm apart. The spacing distance may determine the transmission frequency through which the power free WiFi extension device is transmitted. Therefore, it is necessary that the spacing distance is set so that the transmittance of the Wi-Fi frequency is high. If the spacing distance is too small or too large, the transmittance to the Wi-Fi frequency becomes low.

The power free WiFi extension device 100 is supported by a separate support means in a state where the first pattern module 120 and the second pattern module 130 are spaced apart from each other by a predetermined distance, Module 120 and the second pattern module 130 may be wrapped. At this time, the case 110 may be formed of a flexible material.

Since the powerless WiFi extender 100 is formed in a plate shape as a whole, it can be easily installed at various positions such as a building wall surface. In addition, since the powerless WiFi extension device 100 does not use electric power, there is no wire or plug, and there is no restriction on the installation place.

The case 110 may be formed in a box-like shape having a hollow interior. The case 110 may be formed in a shape having a predetermined width W, a height H, and a depth D. [ The case 110 includes a first surface 100a and a second surface 100b facing each other and a third surface 100c and a second surface 100b connected to the upper and lower sides of the first surface 100a and the second surface 100b, A fourth surface 100d and a fifth surface 100e and a sixth surface 100f connected to both sides of the first surface 100a and the second surface 100b. The first surface 100a and the second surface 100b determine the width and height of the case 110 and the third surface 100c and the fourth surface 100d determine the width and depth of the case 110 And the fifth surface 100e and the sixth surface can determine the height and depth of the case 110. [ The first surface 100a and the second surface 100b may have an area corresponding to the first pattern module 120 and the second pattern module 130. [ The power free WiFi extension device 100 transmits a Wi-Fi signal incident on the first surface 100a in the direction of the second surface 100b.

The case 110 may accommodate the first pattern module 120 and the second pattern module 130 in parallel to each other. For example, the first pattern module 120 may be located on the inner surface of the first surface 100a, and the second pattern module 130 may be located on the inner surface of the second surface 100b. Therefore, the case 110 supports the first pattern module 120 and the second pattern module 130 by a distance corresponding to the depth.

The case 110 may be formed separately from the case body 111 and the case cover 115. That is, the case 110 may be formed by separating the second surface 100b. Meanwhile, the case 110 may be formed to be separated from each other at positions corresponding to half of the depth. In this case, the case 110 may be formed in a shape in which the case body 111 and the case cover 115 are symmetrical to each other. Also, the case cover 115 may be formed to have a predetermined depth.

The case body 111 may have a first surface 100a and a box shape with the second surface 100b opened. For example, the case body 111 is formed with a first surface 100a, a third surface 100c, a fourth surface 100d, a fifth surface 100e, and a sixth surface 100f . The case body 111 may have an area corresponding to an area of the first pattern module 120 in the first surface 100a. The case body 111 may have a depth corresponding to a distance between the first pattern module 120 and the second pattern module 130. The case body 111 supports the first pattern module 120 fixed to the inner surface of the first surface 100a.

The case cover 115 may be formed in a plate shape having an area corresponding to the second surface 100b. The case cover 115 is coupled to the opened second face 100b of the case body 111 and can shield the second face 100b. The case cover 115 may have an area corresponding to the second pattern module 130. The case cover 115 can support and support the second pattern module 130 on a surface facing the case body 111. The case cover 115 may further include a receiving groove (not shown) for receiving the second pattern module 130 on the inner surface thereof to stably support the second pattern module 130.

The case 110 may be formed of a material having a relative permittivity of 1 to 5. For example, it may be formed of a polymethacrylimide foam (trade name: Rohacell), Teflon, polypropylene or polyvinyl chloride. The first surface 100a and the second surface 100b of the case 110 are formed to a thickness of 1.0 to 5 mm, and preferably 2.0 to 3.2 mm. If the thickness of the first surface 100a and the second surface 100b of the case 110 is too thin, mechanical strength is weak and it is difficult to maintain a plate shape or a desired shape. If the first and second surfaces 100a and 100b of the case 110 are too thick, the transmittance of the electromagnetic wave is lowered.

The first pattern module 120 includes a first support plate 121 and a first conductive pattern 125. The first pattern module 120 is formed by locating the first conductive patterns 125 on both sides of the first support plate 121 in a predetermined pattern. The first pattern module 120 is positioned on the inner surface of the first surface 100a of the case 110. [ The first pattern module 120 may be fixed to the inner surface of the first surface 100a of the case 110 by a separate adhesive. The first pattern module 120 may be fixed to the inner surface of the first surface 100a of the case 110 by a separate bolt, a push pin, or a fixing hook. At this time, the first pattern module 120 may be attached to the inner surface of the first surface 100a of the case 110 so as to be in close contact with the inner surface of the first surface 100a.

The first pattern module 120 increases the transmission efficiency of electromagnetic waves in the 2.4 GHz band or the 5 GHz band, which is the frequency band of the Wi-Fi signal. The first pattern module 120 may increase the efficiency of electromagnetic wave transmission in a specific frequency band when the thickness of the first supporting plate 121 and the size or arrangement period of the first conductive pattern 125 are adjusted. Unlike the first pattern module 120, when the first conductive pattern 125 is formed on only one side of the first support plate 121, the electromagnetic wave is non-linear and difficult to use as a transmission member.

The first support plate 121 is formed of a resin film or a resin film. The first support plate 121 may be formed of polyimide. The first support plate 121 may be formed of a material such as polystyrene, polyethylene, PDMS or Teflon. The first support plate 121 supports the first conductive patterns 125 formed on both sides. In addition, the first support plate 121 may collect electromagnetic waves and transmit the electromagnetic waves together with the first conductive patterns 125. The first support plate 121 is formed to a thickness of 0.4 to 1.2 mm, and preferably has a thickness of 0.6 to 1.0 mm. If the thickness of the first support plate 121 is too small or too large, the transmittance of electromagnetic waves may be reduced. In addition, if the thickness of the first support plate 121 is too small or large, frequency modulation of electromagnetic waves may occur. The first support plate 121 may have an area corresponding to the first surface 100a of the case 110. [

The first conductive pattern 125 may be formed in a circular ring shape or a polygonal ring shaped plate such as a square ring, a pentagonal ring, a hexagonal ring, or an octagonal ring. The first conductive pattern 125 is formed to a thickness of 20 to 60 탆, preferably 30 to 50 탆. When the first conductive pattern 125 has a circular ring shape, the first conductive pattern 125 may have an inner diameter of 20 to 30 mm and an outer diameter of 40 to 60 mm. The inner diameter, outer diameter, and thickness of the first conductive pattern 125 may affect the transmission frequency of the electromagnetic wave. Accordingly, if the inner diameter, the outer diameter, and the thickness of the first conductive pattern 125 are too small or large, the transmission frequency of the electromagnetic wave deviates from the WiFi frequency. On the other hand, when the first conductive pattern 125 is formed in a polygonal ring shape, the first conductive pattern 125 is formed to have a width or a length having the same area as a circle having a diameter in the above range. That is, the outside of the first conductive pattern 125 is formed into a shape having a width or a length corresponding to the area of the circle having the outer diameter. The inside of the first conductive pattern 125 is formed in a shape having a width or a length corresponding to a circle having an inner diameter.

The first conductive patterns 125 may be arranged on both sides of the first support plate 121 in a predetermined pattern. The first conductive patterns 125 are arranged at equal intervals in the row direction and the column direction. In addition, the first conductive patterns 125 may be arranged in a honeycomb shape. The first conductive patterns 125 are formed at the same positions on both sides of the first support plate 121. That is, the first conductive patterns 125 are arranged symmetrically with respect to the first support plate 121. The first conductive patterns 125 may be spaced apart from each other such that the distance between the centers of the adjacent first conductive patterns 125 is 1.1 to 1.5 times the outer diameter of the first conductive patterns 125. For example, when the outer diameter of the first conductive pattern is 50 mm, the first conductive pattern 125 may be spaced such that the distance between the centers of two neighboring patterns is 55 to 75 mm. The distance between the centers can affect the transmittance of the electromagnetic wave. If the distance between the centers is too small or large, the transmittance of the electromagnetic wave may be lowered.

The inner diameter, outer diameter, and spacing distance of the first conductive pattern 125 affect the transmission peak frequency band that exhibits the highest transmittance when electromagnetic waves are transmitted. That is, the transmission peak frequency having the highest transmittance may be different depending on the inner diameter, outer diameter, and spacing distance of the first conductive pattern 125. The inner diameter, the outer diameter, and the separation distance of the first conductive pattern 125 may be determined so that the 2.4 GHz band or the 5 GHz band, which is the frequency band of the Wi-Fi signal, is the transmission peak frequency.

The first conductive pattern 125 is formed of an electrically conductive metal and may be formed of a metal such as copper, silver, aluminum, gold, platinum, or nickel.

The second pattern module 130 includes a second support plate 131 and a second conductive pattern 135. The second pattern module 130 is formed in the same manner as the first pattern module 120. That is, the second supporting plate 131 and the second conductive pattern 135 are formed in the same manner as the first supporting plate 121 and the first conductive pattern 125. The second pattern module 130 is fixed to the inner surface of the second surface 100b of the case 110. [ The second pattern module 130 may be fixed to the inner surface of the case cover 115. The second pattern module 130 may be bonded by a separate adhesive. At this time, the second pattern module 130 is located at a position opposite to the first pattern module 120 located on the first surface 100a of the case 110. That is, the second conductive pattern 135 may be located at a position opposite to the first conductive pattern 125.

The following describes the operation, simulation, and evaluation result of the powerless WiFi extension device according to the present invention.

Figure 4 is a schematic diagram illustrating the operation of a powerless WiFi extension device installed within a building; 5 is a frequency distribution diagram of a Wi-Fi signal by the power-free Wi-Fi extension device of the present invention. FIG. 6 is a magnitude distribution diagram of a Wi-Fi signal in a state in which the power-free Wi-Fi extension device of the present invention is not attached. Figure 7 is a graph of the transmittance of the power free WiFi extender of the present invention. 8 is a graph of the relative transmittance of the power free WiFi extender of the present invention. 9 is an S-parameter graph of the power-free WiFi extension device of the present invention.

The simulation and evaluation of the powerless WiFi extension device 100 according to the present invention proceeded in a frequency range including 2.4 GHz, which is the frequency band of the Wi-Fi signal. The first supporting plate 121 and the second supporting plate 131 were formed of a polyimide thin film having a thickness of 0.8 mm. The first conductive pattern 125 and the second conductive pattern 135 are copper thin films having a thickness of 35 nm, an inner diameter of 25 mm, and an outer diameter of 50 mm. The first conductive pattern 125 and the second conductive pattern 135 are disposed such that the distance between the centers is 65 mm. The first conductive pattern 125 and the second conductive pattern 135 are spaced apart from each other by 75 mm.

First, the operation of the powerless WiFi extension device of the present invention will be described.

Referring to FIG. 4, the wireless powerless WiFi extension device 100 may be installed at a position where a Wi-Fi signal is separated from a Wi-Fi signal transmission device in a building. The powerless WiFi extension device 100 can transmit a Wi-Fi signal and transmit the Wi-Fi signal at a greater distance. Typically, Wi-Fi signals used inside a building, such as a home or office, are transmitted at distances of about 10 meters or less. In contrast, the powerless WiFi extension device 100 transmits an incoming Wi-Fi signal while transmitting the Wi-Fi signal over a longer distance.

Next, a measurement result of intensity distribution of an electromagnetic wave signal by the power-free WiFi extension device of the present invention will be described.

The powerless WiFi extension device 100 of the present invention is located between a Wi-Fi transmission device and a Wi-Fi reception device (for example, a smart phone), referring to FIG. The powerless WiFi extension device 100 receives electromagnetic waves transmitted from the Wi-Fi transmission device and transmits the electromagnetic waves again. Therefore, it can be confirmed that the electromagnetic wave of about 24.2 V / m is received by the WiFi receiver. In addition, it can be confirmed that the Wi-Fi signal transmitted from the Wi-Fi transmission device is collected in the direction of the non-power Wi-Fi extension device 100. Accordingly, it can be confirmed that the wireless powerless WiFi extension device 100 converges and re-transmits the electromagnetic wave.

On the other hand, in the absence of the power free WiFi extension device 100 of the present invention, it can be seen from FIG. 6 that the WiFi receiver receives electromagnetic waves of approximately 3 V / m.

The following is a description of the results of the evaluation of the transmittance of electromagnetic wave in the powerless WiFi extension device according to an embodiment of the present invention.

In this evaluation, electromagnetic waves were used in the frequency band of 1.4 to 3.4 GHz.

Referring to FIG. 7, the power free WiFi extension device 100 has the highest transmittance at 2.4 GHz, which is the frequency band of the Wi-Fi signal.

In addition, referring to FIG. 8, the non-power WiFi extender 100 exhibits a transmittance of about 1.8 with respect to electromagnetic waves in a frequency band of 2.4 GHz. Generally, the transmittance of the electromagnetic wave transmitted from the Wi-Fi transmitting apparatus is set to 1.

In addition, referring to FIG. 9, the non-power WiFi extender 100 has an S-parameter of about 0.09 for an electromagnetic wave in a frequency band of 2.4 GHz. When the power-free Wi-Fi extension device 100 is not used, the S-parameter of the Wi-Fi signal is as low as about 0.05. Therefore, it can be confirmed that a higher electromagnetic wave is reached when the non-power WiFi extender 100 is used.

The present invention has been described in detail with reference to the preferred embodiments shown in the drawings. These embodiments are to be considered as illustrative rather than limiting, and should be considered in an illustrative rather than a restrictive sense. The true scope of protection of the present invention should be determined by the technical idea of the appended claims rather than the above description.

100: Powerless WiFi Extension
110: Case
111: Case body 115: Case cover
120: first pattern module
121: first support plate 125: first conductive pattern
130: second pattern module
131: second support plate 135: second conductive pattern

Claims (9)

A first pattern module including a first support plate and a plurality of first conductive patterns disposed on both sides of the first support plate, the first pattern module being attached to one surface of the base plate,
And a plurality of second conductive patterns disposed on both sides of the second support plate and the second support plate,
Wherein the first pattern module and the second pattern module are located opposite to each other and spaced apart from each other and transmit the transmitted Wi-Fi signal. The method according to claim 1,
Further comprising a case having an area corresponding to an area of the first pattern module and having first and second surfaces facing each other,
Wherein the first pattern module is located on the inner side of the first side of the case and the second pattern module is located on the inner side of the second side of the case. 3. The method of claim 2,
The case includes a case body having the first surface and formed in a box shape opened in the direction of the second surface, and a case cover coupled to the second surface,
Wherein the case cover fixes and supports the second pattern module on a surface facing the case body. The method according to claim 1,
Wherein the case is formed of a polymethacrylimide foam, teflon, polypropylene or polyvinyl chloride. The method according to claim 1,
The first support plate and the second support plate are formed to a thickness of 0.4 to 1.2 mm,
Wherein the electromagnetic wave transmitting member is made of polyimide, polystyrene, polyethylene, PDMS, or Teflon. The method according to claim 1,
The first conductive pattern and the second conductive pattern are formed to a thickness of 20 to 60 탆,
And is formed of a material of copper, silver, aluminum, gold, platinum or nickel. The method according to claim 1,
The first conductive pattern and the second conductive pattern
Wherein the radial member is formed in a circular ring shape, a square ring shape, a pentagonal ring shape, a hexagonal ring shape, or an octagonal ring shape. The method according to claim 1,
Wherein the first conductive pattern and the second conductive pattern are formed in a circular ring shape having an inner diameter of 20 to 30 mm and an outer diameter of 40 to 60 mm. The method according to claim 1,
Wherein the first conductive patterns are spaced apart from each other such that the distance between the centers of the first patterns adjacent to each other is 1.1 to 1.5 times the outer diameter of the first conductive pattern.

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