KR101007904B1 - Antenna in which cables are electrically connected - Google Patents

Abstract

The present invention relates to an antenna in which cables connected with lines are electrically connected through a connecting member. The antenna is a first dielectric substrate having a first line of conductors arranged on one surface thereof, a second dielectric substrate positioned above the first dielectric substrate, and a second dielectric substrate having a second line of conductors arranged on one surface thereof, on the first line. And a first cable electrically connected to the second cable, a second cable electrically connected to the second line, and a connection member electrically connecting the first cable and the second cable.

Antenna, Phase Shifter, Leakage Current, Line, Cable

Description

ANTENNA IN WHICH CABLES ARE ELECTRICALLY CONNECTED}

The present invention relates to an antenna, and more particularly, to an antenna for electrically connecting cables connecting lines and radiation elements to each other through a connecting member.

An antenna is an element that transmits and receives electromagnetic waves by radiating a beam in a specific direction, and generally includes components as shown in FIG. 1 below.

1 is a perspective view schematically showing a general antenna.

Referring to FIG. 1, the antenna includes phase shifters and cables 110, 112, 114, and 116 arranged on a reflector (not shown).

The phase shifter includes a first dielectric substrate 100, a second dielectric substrate 102, a first line 104, a second line 106, and the like.

The first line 104 is a conductor and is formed on the first dielectric substrate 100.

The second line 106 is a conductor and is formed on the second dielectric substrate 102.

The first cable 110 is connected to one end of the first line 104 and connects the first line 104 to the corresponding radiation element.

The second cable 112 is connected to the other end of the first line 104 and connects the first line 104 to the corresponding radiation element.

The third cable 114 is connected to one end of the second line 106 and connects the second line 106 to the corresponding radiation element.

The fourth cable 116 is connected to the other end of the second line 106 and connects the second line 106 to the corresponding radiation element.

In the antenna of this structure, there is a problem that leakage current is generated from the lines 104 and 106 to the cables 110, 112, 114 and 116. For example, the current leakage from cable 110 had a significant effect on cable 114, resulting in a significant increase in the loss of the phase shifter.

It is an object of the present invention to provide an antenna for electrically connecting cables to reduce the loss of phase shifters.

In order to achieve the above object, an antenna according to an embodiment of the present invention comprises a first dielectric substrate having a first line of conductors arranged on one surface thereof; A second dielectric substrate positioned above the first dielectric substrate and spaced apart from the first dielectric substrate, and having a second line as a conductor arranged on one surface thereof; A first cable electrically connected to the first line; A second cable electrically connected to the second line; And a connecting member which is a conductor that electrically connects the outer conductor of the first cable and the outer conductor of the second cable.

The antenna is a reflector; And one or more radiation elements arranged on the first side of the reflector. Here, the radiation elements are arranged on a second side opposite to the first side of the reflection plate, the first cable electrically connects the first line to the first radiation element of the radiation elements, The second cable electrically connects the second line to a second one of the radiation elements.

At least one of the first cable and the second cable is electrically connected to the reflector.

Antenna according to another embodiment of the present invention is a reflector; A first dielectric substrate arranged on a first surface of the reflecting plate and having a first line arranged on one surface thereof; A first cable electrically connected to the first line; And a first conductor member arranged on the first surface of the reflecting plate and spaced apart from the first dielectric substrate, and electrically connected to the reflecting plate. Here, the outer conductor of the first cable is electrically connected to the first conductor member.

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The antenna may include a second dielectric substrate arranged between the reflective plate and the first dielectric substrate and having a second line disposed on one surface thereof; A second cable electrically connected to the second line; Radiation elements arranged on a second surface of the reflecting plate opposite to the first surface; And a second conductor member arranged on the first surface of the reflecting plate and electrically connected to the reflecting plate. Here, the first cable electrically connects the first line to a first radiation element of the radiation elements, and the second cable electrically connects the second line to a second radiation element of the radiation elements. And the outer conductor of the second cable is electrically connected to the second conductor member.

The antenna may include a second dielectric substrate arranged between the reflective plate and the first dielectric substrate and having a second line disposed on one surface thereof; A second cable electrically connected to the second line; Radiation elements arranged on a second surface of the reflecting plate opposite to the first surface; And a connecting member for electrically connecting the outer conductor of the first cable to the outer conductor of the second cable.

In the antenna according to the embodiment of the present invention, since the cables electrically connecting the lines and the radiation elements are interconnected through the connecting member, the corresponding leakage currents are canceled out. As a result, there is an advantage that the loss of the antenna, in particular the loss of phase shifter, is reduced.

In the antenna according to another embodiment of the present invention, since the cable is electrically connected to the conductor member connected to the reflector, the loss of the phase shifter is reduced.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. Like reference numerals are used for like elements in describing each drawing.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "having" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

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

2 is a view showing an antenna according to an embodiment of the present invention, Figure 3 is a perspective view schematically showing a phase shifter according to a first embodiment of the present invention.

2, the antenna of the present embodiment includes a reflector 200, a phase shifter 202, and at least one radiation element 204.

The reflector 200 serves as a ground and a reflector.

Phase shifter 202 is a device for controlling the direction of the radiation pattern output from the radiation elements 204 by varying the phase of the RF signal provided to the radiation elements 204, as shown in Figure 2 (A) Likewise arranged on the first surface of the reflecting plate 200.

The radiation elements 204 emit beams in a specific direction in accordance with the RF signals provided through the phase shifter 202 and, as shown in FIG. Arranged on the opposite second side. Here, the radiation elements 204 are electrically connected to the lines of the phase shifter 202 via corresponding cables.

Hereinafter, the connection structure and the function of the cables will be described in detail.

Referring to FIG. 3, the phase shifter 202 of the present embodiment may include a first dielectric substrate 300, a second dielectric substrate 302, a first line 304, a second line 306, a rotation shaft 308, The first arm 310, the second arm 314, the cables 320, 322, 324 and 326 and the connecting members 330 and 332 are included. That is, the phase shifter 202 is a device having a vertically stacked structure and is used when it is desired to control the plurality of radiation elements 204.

The first dielectric substrate 300 is arranged on one surface of the reflector 200 and is made of a material having a specific dielectric constant. Here, a first ground plate serving as a ground is formed on the bottom surface or the inside of the first dielectric substrate 300.

The second dielectric substrate 302 is arranged between the reflector plate 200 and the first dielectric substrate 300 and is made of a material having a specific dielectric constant. Here, a second ground plate is formed on or under the second dielectric substrate 302.

The first line 304 is a conductor and is arranged on the first dielectric substrate 300.

The second line 306 is a conductor and is arranged on the second dielectric substrate 300.

The rotating shaft 308 rotates the first arm 310 and the second arm 314. Although not shown in FIG. 3, the rotation shaft 308 is rotated by an external device (not shown), and the rotational force according to the rotation is transmitted to the first arm 310 and also to the second arm 314.

The first arm 310 rotates according to the operation of the rotation shaft 308. Here, a third line, which is a conductor, is formed on the lower surface of the first arm portion 310. As a result, when the position of the first arm 310 is changed by the rotation axis 308, the phase of the RF signal transmitted to the lower portion of the third line of the first dielectric substrate 300 is changed. The RF signal having such a phase is transmitted to the radiation elements 204 electrically connected to the first line 304, and as a result, the direction of the beam radiated from the radiation elements 204 is changed.

The second arm 314 rotates according to the operation of the rotation shaft 308. Here, a fourth line, which is a conductor, is formed on the lower surface of the second arm portion 314. As a result, when the position of the second arm portion 314 is changed by the rotation axis 308, the phase of the RF signal transmitted to the lower portion of the fourth line of the second dielectric substrate 302 is changed.

The first cable 320 electrically connects one end of the first line 304 and the corresponding radiation element 204, and includes a covering layer surrounding the outer conductor 320A, the inner conductor 320B, and the outer conductor 320A. 320C). In detail, the inner conductor 320B is connected to one end of the first line 304. Of course, the inner conductor 320B will be fixed while being connected to the end of the first line 304 by a process such as soldering.

The second cable 322 electrically connects the other end of the first line 304 and the corresponding radiation element 204.

The third cable 324 electrically connects one end of the second line 306 with the corresponding radiation element 204.

The fourth cable 326 electrically connects the other end of the second line 306 with the corresponding radiation element 204.

The first connection member 330 is a conductor, and electrically connects the first cable 320 and the third cable 324 positioned vertically. Specifically, the outer conductor 320A of the first cable 320 is connected to the outer conductor of the third cable 324.

The second connecting member 332 is a conductor, and electrically connects the second cable 322 and the fourth cable 326 positioned up and down. Specifically, the outer conductor of the second cable 322 is connected to the outer conductor of the fourth cable 326.

In short, unlike in the conventional antenna, in the antenna of the present embodiment, the cables 320, 322, 324 and 326 positioned up and down are electrically connected through the corresponding connecting member 330 or 332. Generally, leakage currents are generated from cables 320, 322, 324, and 326, which leakage current affects other cables, increasing antenna losses. However, in the antenna of the present invention, for example, the cables 320 and 324 are connected through the connecting member 330, so that the leakage current flowing through the cables 320 and 324 is canceled out. As a result, the loss of the antenna can be reduced. Experiment results for this will be described later with reference to the accompanying drawings.

Hereinafter, a structure including the first dielectric substrate 300 and the first line 304 may be referred to as a first sub phase shifter, and a structure including the second dielectric substrate 302 and the second line 306 may be referred to. This is called the second sub phase shifter.

4 is a diagram schematically illustrating a sub phase shifter according to an exemplary embodiment of the present invention. However, only the sub phase shifter corresponding to the first dielectric substrate 300 of the two sub phase shifters is illustrated.

Referring to FIG. 4, the sub phase shifter of the present embodiment includes a first dielectric substrate 300, a first line 302, a fifth line 400, a sixth line 402, a rotation shaft 308, and a first arm part. 310. That is, although not shown in FIG. 3, new lines 400 and 402 may be further formed on the first dielectric substrate 300.

The fifth line 400 is a conductor and is an input passage of an RF signal.

The sixth track 402 is arranged in a direction opposite to the first track 302 with respect to the rotation axis 308.

The fifth cable 404 electrically connects one end of the sixth line 402 and the corresponding radiation element 204.

The sixth cable 406 electrically connects the other end of the sixth line 402 with the corresponding radiation element 204.

In other words, lines of various structures may be formed in the sub phase shifter of the present embodiment, and there are cables connecting the lines with the corresponding radiating element 204. Here, the cables are electrically connected to cables connected to another sub phase shifter located at the bottom as shown in FIG. 3.

FIG. 5 is a diagram illustrating an experimental result of the loss of the conventional sub-phase shifters, and FIG. 6 is a diagram illustrating an experimental result of the loss of the sub phase shifters of FIG. 3. Specifically, FIG. 5 (A) shows the loss of the first sub phase shifter located at the top of the conventional sub phase shifters, and FIG. 5 (B) shows the loss of the second sub phase shifter located at the bottom. Shown. FIG. 6 (A) shows the loss of the first sub phase shifter located at the top of the sub phase shifters of the present invention, and FIG. 6 (B) shows the loss of the second sub phase shifter located at the bottom.

5 (A) and 6 (A), it is confirmed that the loss of the first sub phase shifter of the present invention is smaller than that of the conventional first sub phase shifter.

5 (B) and 6 (B), it is confirmed that the loss of the second sub phase shifter of the present invention is considerably smaller than that of the conventional second sub phase shifter. In particular, the conventional second sub phase shifter has a considerably greater loss than the first sub phase shifter due to various causes. However, the loss of the second sub phase shifter included in the antenna of the present invention, which electrically connected the cables using the connecting member, was reduced to a size similar to that of the first sub phase shifter.

In short, it is confirmed that the loss of the sub phase shifters of the present invention is considerably smaller than the loss of the conventional sub phase shifters.

7 is a perspective view schematically showing an antenna according to a second embodiment of the present invention.

Referring to FIG. 7, a phase shifter is arranged on one surface of the reflector plate 700.

The phase shifter includes a first dielectric substrate 702, a second dielectric substrate 704, a first line 706, a second line 708, a conductor member 710, a first cable 712, and a second. The cable 714, the first connecting member 716 and the second connecting member 718 are included.

Except for the conductor member 710, the cables 712 and 714, and the connecting members 716 and 718, the other components are the same as in the first embodiment, and thus, detailed descriptions of the same components will be omitted.

The conductor member 710 is a conductor and is formed in the direction perpendicular to the reflector plate 700 on the reflector plate 700.

The first cable 712 electrically connects the first line 706 and the corresponding radiation element.

The second cable 714 electrically connects the second line 708 and the corresponding radiation element.

The first connecting member 716 electrically connects the outer conductor of the first cable 712 to the conductor member 710 to reduce the loss of the first sub phase shifter. Here, the first sub phase shifter refers to a structure including a first dielectric substrate 702, a first line 706, and the like.

The second connecting member 718 electrically connects the outer conductor of the second cable 714 to the conductor member 710 to reduce the loss of the second sub phase shifter. Here, the second sub phase shifter refers to a structure including a second dielectric substrate 704, a second line 708, and the like.

In short, the antenna of this embodiment electrically connects the outer conductors of the cables 712 and 714 to the reflector plate 700 through the connecting members 716 and 718 and the conductor member 710. To reduce the leakage current. As a result, the loss of the sub phase shifters can be reduced.

In the above, cables 712 and 714 are connected to the same conductor member 710, although cables 712 and 714 may be connected to different conductor members. Of course, the conductor members are electrically connected to the reflector plate 700.

In addition, although the cables 712 and 714 are not interconnected above, the cables 712 and 714 may be electrically connected through a new connecting member as in the first embodiment.

8 is a diagram schematically illustrating an antenna according to a third embodiment of the present invention.

Referring to FIG. 8, the antenna of this embodiment includes a reflector plate 800, a phase shifter, conductor members 808, 810, 812, and 814, cables 820, 822, 824, and 826 and connecting members 830. 832, 834 and 836).

The phase shifter includes a dielectric substrate 802, a first line 804, a second line 806, and the like. That is, the phase shifter includes one sub phase shifter unlike the first and second embodiments including a plurality of sub phase shifters.

The first cable 820 is connected to one end of the first line 804 and is connected to the first conductor member 808 through the first connecting member 830.

The second cable 822 is connected to the other end of the first line 804, and is connected to the second conductor member 810 through the second connecting member 832.

The third cable 824 is connected to one end of the second line 806 and is connected to the third conductor member 812 through the third connecting member 834.

The fourth cable 826 is connected to the other end of the third line 808 and is connected to the fourth conductor member 814 through the fourth connecting member 836.

In short, the cables 820, 822, 824, and 826 are electrically connected to the reflector plate 800 through the connection members 830, 832, 834, and 836 and the conductor members 808, 810, 812, and 814. To reduce the loss of the phase shifter.

The embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art having ordinary knowledge of the present invention may make various modifications, changes, and additions within the spirit and scope of the present invention. Should be considered to be within the scope of the following claims.

1 is a perspective view schematically showing a general antenna.

2 is a diagram illustrating an antenna according to an embodiment of the present invention.

3 is a perspective view schematically showing a phase shifter according to a first embodiment of the present invention.

4 is a diagram schematically illustrating a sub phase shifter according to an exemplary embodiment of the present invention.

5 is a diagram illustrating an experimental result of the loss of the conventional sub-phase shifters.

FIG. 6 is a diagram illustrating an experimental result of the loss of the sub phase shifters of FIG. 3.

7 is a perspective view schematically showing an antenna according to a second embodiment of the present invention.

8 is a diagram schematically illustrating an antenna according to a third embodiment of the present invention.

Claims (9)

A first dielectric substrate on which a first line as a conductor is arranged; A second dielectric substrate positioned above the first dielectric substrate and spaced apart from the first dielectric substrate, and having a second line arranged as a conductor; A first cable electrically connected to the first line; A second cable electrically connected to the second line; And A connecting member which is a conductor that electrically connects the outer conductor of the first cable and the outer conductor of the second cable, And the first line is arranged on one surface of the first dielectric substrate, and the second line is arranged on one surface of the second dielectric substrate. The method of claim 1, wherein the antenna, Reflector; And Further comprising one or more radiation elements arranged on the first side of the reflecting plate, The first cable electrically connects the first line to a first radiation element of the radiation elements, and the second cable electrically connects the second line to a second radiation element of the radiation elements. Characterized by an antenna. The antenna of claim 2, wherein at least one of the first cable and the second cable is electrically connected to the reflector. delete delete delete Reflector; A first dielectric substrate arranged on the first surface of the reflecting plate and having a first line arranged thereon; A first cable electrically connected to the first line; And A first conductor member arranged on the first surface of the reflecting plate and spaced apart from the first dielectric substrate, the first conductor member electrically connected to the reflecting plate, And the first line is arranged on one surface of the first dielectric substrate, wherein an outer conductor of the first cable is electrically connected to the first conductor member. The method of claim 7, wherein the antenna, A second dielectric substrate arranged between the reflecting plate and the first dielectric substrate and having a second line arranged thereon; A second cable electrically connected to the second line; Radiation elements arranged on a second surface of the reflecting plate opposite to the first surface; And A second conductor member arranged on the first surface of the reflecting plate and electrically connected to the reflecting plate, The second line is arranged on one surface of the second dielectric substrate, the first cable electrically connects the first line to a first radiation element of the radiation elements, and the second cable is the second line. Is electrically connected to a second one of the radiation elements, and the outer conductor of the second cable is electrically connected to the second conductor member. The method of claim 7, wherein the antenna, A second dielectric substrate arranged between the reflecting plate and the first dielectric substrate and having a second line arranged thereon; A second cable electrically connected to the second line; Radiation elements arranged on a second surface of the reflecting plate opposite to the first surface; And Further comprising a connecting member electrically connecting the outer conductor of the first cable to the outer conductor of the second cable, And the second line is arranged above the second dielectric substrate.

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