KR101628815B1

KR101628815B1 - Dipole antenna apparatus

Info

Publication number: KR101628815B1
Application number: KR1020150083535A
Authority: KR
Inventors: 이재민; 김영완; 채희덕; 박종국
Original assignee: 엘아이지넥스원 주식회사
Priority date: 2015-06-12
Filing date: 2015-06-12
Publication date: 2016-06-09

Abstract

The present invention proposes a dipole antenna device in which the arms of the dipole antenna are bent and two of them are arranged in a separated manner in accordance with the direction in which the directional body is bent. An apparatus according to the present invention includes: a conductor portion including a first conductor and a second conductor formed symmetrically on a flat plate; A power feeder connected to the first conductor and the second conductor; And a directing body portion including a first directing body and a second directing body that are separated from each other by a predetermined distance from each of the first conductor and the second conductor on the flat plate.

Description

[0001] Dipole antenna apparatus [0002]

The present invention relates to a dipole antenna apparatus and a radar signal transmitting and receiving apparatus having the dipole antenna apparatus. And more particularly, to a dipole antenna device including a detachable antenna and a radar signal transmitting and receiving device having the same.

In the case of the conventional dipole antenna, a shadow region where the beam steering is impossible in the steering of the wide-angle beam occurs due to the directivity in the E-plane direction, and a null-point (angle without energy radiation) occurs on the beam pattern. Therefore, if the beam steering is performed near the shaded area, the active reflection increases, and the reflected wave of the output radiated from the transmission increases the influence on the semiconductor transmission / reception module.

In addition, in the case of a dipole antenna using a conventional directivity body, the directivity is further increased as compared with a dipole antenna without a directivity body. This reduces the beam width and further reduces the beam steerable range in which no shadow region is generated.

Korean Patent Publication No. 2008-0035785 proposes a dipole antenna. However, since the dipole antenna is for improving the directivity by adjusting the rotation and the turning angle of the dipole, the above problem can not be solved.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a dipole antenna apparatus in which two arms are bent in a direction of bending an arm of a dipole antenna, The purpose.

However, the objects of the present invention are not limited to those mentioned above, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

SUMMARY OF THE INVENTION The present invention has been made in order to accomplish the above-mentioned object, and it is an object of the present invention to provide a method of manufacturing a semiconductor device including a conductor portion including a first conductor and a second conductor formed symmetrically on a flat plate; A feeder connected to the first conductor and the second conductor; And a directing body portion including a first directing body and a second directing body separated from each other at a predetermined distance from each of the first conductor and the second conductor on the flat plate and having a predetermined length, An antenna device is proposed.

Preferably, the first directing body and the second directing body are formed to be inclined with respect to the signal output direction of the dipole antenna apparatus.

Preferably, the longitudinal direction of the first direction body is different from the longitudinal direction of the second direction body.

Preferably, the inclination angle of the first directional element with respect to the signal output direction of the dipole antenna device is different from the inclination angle of the second directional element with respect to the signal output direction of the dipole antenna device.

Preferably, the first conductor and the second conductor are formed so that one end thereof is bent in different directions, and the longitudinal direction of the first conductor and the longitudinal direction of the second conductor intersect the bent direction of the first conductor And parallel to the bending direction of the second conductor.

Preferably, the dipole antenna device further includes a reflector formed at a predetermined width in at least one direction from one end of the flat plate.

Preferably, the reflection plate is formed with the width in a direction perpendicular to the longitudinal direction of the flat plate.

Preferably, the dipole antenna device is in the form of a polyhedron, and further includes an insulator whose one surface is closely contacted to the flat plate and whose other surface is closely attached to the reflector.

Preferably, the insulator is formed with a predetermined width in the horizontal direction with respect to the longitudinal direction of the flat plate.

According to another aspect of the present invention, there is provided a radar system including: a radar signal generator for generating a radar signal; And a conductor section for transmitting and receiving the radar signal, the conductor section including a first conductor and a second conductor symmetrically formed on a flat plate; A feeder connected to the first conductor and the second conductor; And a dipole antenna device including a first conductor and a second conductor separated from each other by a predetermined distance from each of the first conductor and the second conductor on the flat plate, And a radar signal transmitting / receiving device.

Preferably, the radar signal transmitting and receiving device is mounted in a multi-function radar system.

The present invention can achieve the following effects through the configuration for achieving the above object.

First, the non-shaded beam steering range is increased to wide angle. That is, it is possible to steer the beam to a wide angle, which is suitable for active planar phase array radar.

Second, it is possible to increase the antenna radiation efficiency by minimizing the active reflection in the operation range of the radar beam, and it is possible to reduce damage and performance deterioration of the semiconductor transmission / reception module that can be generated in the beam steering.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of an array of elements forming a sub-array antenna according to an embodiment of the present invention. FIG.
2 is a perspective view of a simulation model of a sub-array antenna according to an embodiment of the present invention.
3 is a side view of a simulation model of the sub-array antenna shown in FIG.
FIG. 4 is a reference diagram for explaining the structure and operation principle of a dipole antenna including a detachable antenna according to an embodiment of the present invention. Referring to FIG.
5 to 7 are reference views for explaining the effect of the dipole antenna according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, the preferred embodiments of the present invention will be described below, but it is needless to say that the technical idea of the present invention is not limited thereto and can be variously modified by those skilled in the art.

Antennas used for active surface phased array radars, such as multifunctional radars, should be able to steer the beam at a wide angle depending on the purpose of the radar. For operation of such a radar, the radiation element constituting the antenna must satisfy a wide beam width so as to minimize the shaded area where the beam is not steered. In addition, active reflection must be minimized for all beam steering ranges to minimize the effect of transmitted reflected waves on the semiconductor transceiver module attached to the back of the radiating element.

In the present invention, a dipole antenna using a split type directivity body is proposed as a new structure capable of steering a wide-angle beam and improving active reflection characteristics in all beam steering ranges.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of an array of elements forming a sub-array antenna according to an embodiment of the present invention. FIG.

Active Planar Array The dipole antenna used in the radar antenna has a wide beam width in the H-plane direction and a certain directivity in the E-plane direction due to the current distribution. However, when a directivity body is placed in front of the dipole antenna, the directivity increases due to the influence of the directivity body, and the beam width is reduced in both the H-plane and the E-plane direction.

SUMMARY OF THE INVENTION The present invention has been made in order to solve such a problem and proposes a dipole antenna including a separable directivity for a multi-function radar. This will be described in more detail with reference to FIG.

1, the array element 100 includes a separable director 110, a conductor 120, a feed line 130, an isolator 140, a reflector 150, and a flat plate 160 .

The separable directors 110 are formed on the flat plate 160 at a predetermined distance from the conductors 120. In this embodiment, the separable directors 110 may be composed of at least two. The separable directive member 110 is formed in an oblique direction, so that it is possible to obtain an effect of increasing the directivity and increasing the beam width.

The conductor 120 radiates a signal into a free space and may be formed in the shape of a dipole antenna. The conductor 120 may be composed of at least a pair of elements. These conductors 120 may be formed on the flat plate 160 symmetrically with one end of each element bent in different directions.

The feed line 130 is connected to all the elements constituting the conductor 120 and applies a signal to the conductor 120 so as to have a phase difference of 180 degrees. In this embodiment, the feeding line 130 may be connected to all the elements constituting the conductor 120 in consideration of the BALUN (BALANT to UNBALANCED (transformer)) technique.

The insulator 140 is a structure for inhibiting coupling between the array element 100 and adjacent elements adjacent to the array element 100. The dipole antenna ports adjacent to each other are coupled to each other by an electric field vector. The characteristics of the electric field cause a phenomenon in which the electric field disappears if the conductor hits in a direction parallel to the electric field vector. The insulator 140 can improve the degree of isolation between the ports by suppressing the bonding between adjacent upper and lower elements using such a characteristic. In this embodiment, the insulator 140 is an E-plane isolator for the entire interface, and may be formed to have a certain thickness and width at at least one end (preferably both ends) of the flat plate 160.

The reflection plate 150 is for reflecting a signal flowing in the rear direction forward and is attached or fitted to one end of the flat plate 160 to form a predetermined gap between the array elements 100. The reflector 150 serves to reflect the omnidirectional pattern of the dipole antenna forward in this embodiment. The reflection plate 150 may be made of aluminum, copper, or the like to perform a reflection function.

On the flat plate 160, a separable conductor 110, a conductor 120, a feed line 130, and the like are formed. In this embodiment, the separable directors 110, the conductors 120, the feed lines 130, and the like may be formed on the flat plate 160 in the form of a PCB.

The array element 100 is described above. In this embodiment, the antenna is a plurality of array elements 100 arranged. This will be described below.

2 is a perspective view of a simulation model of a sub-array antenna according to an embodiment of the present invention. 2, the array element 100 is inserted into a socket 210, and the sub-array antenna 200 is formed by aligning the sockets 210 in which the array elements 100 are inserted, .

3 is a side view of the simulation model of the sub-array antenna shown in FIG.

Meanwhile, the reflection plate 150 may be formed of a supporting member for supporting the flat plate 160 as shown in FIGS. However, the present embodiment is not limited thereto. As shown in FIG. 3, it is also possible that a support member 170 is made of iron material and a reflection plate 150 is attached to one side of the support member 170 .

The antenna according to the present invention described above with reference to Figs. 1 to 3 has two dipoles arranged in a manner of bending the arm of the dipole antenna and matching the direction of bending the directional body, so that the directivity on the E-plane of the existing dipole antenna The beam width can be increased. Also, the antenna according to the present invention minimizes the shaded area where the beam steering is not possible, so that the beam steering of the wide angle can be performed, and the active reflection in the beam steering range can be minimized.

FIG. 4 is a reference diagram for explaining the structure and operation principle of a dipole antenna including a detachable antenna according to an embodiment of the present invention. Referring to FIG.

A general dipole antenna has a structure and a beam pattern as shown in Fig. 4 (a). In order to improve the directivity of such a dipole antenna, a directivity body can be used. When the directivity is used, the directivity is increased due to the characteristics of the antenna. However, when the beam steering angle of the active phase array radar is increased, .

The dipole antenna according to the present invention has a structure in which two separated directors are arranged in an oblique direction as shown in FIG. 4 (b) to increase the beam width so as to minimize a shaded area in which a beam can not be steered in a planar array active phased array radar . The dipole antenna according to the present invention minimizes the shaded area in which the beam steering is not possible and minimizes the active reflection coefficient, thereby preventing damage to the semiconductor transceiver module.

5 to 7 are reference views for explaining the effect of the dipole antenna according to the present invention.

In the present invention, a simulation of a structure in which two waveguides are provided in a dipole antenna has been proposed. In the conventional case, since the beam of the planar dipole antenna is narrow, the steering shadow area is wide when the beam is steered. On the other hand, the structure in which two waveguides are installed as in the present invention has a wide beam, so that the steering shadow region can be narrowed in the beam steering.

5 is a graph showing the active reflection loss occurring when the antenna apparatus of the radar steers the beam. When the beam is steered, the phases of the array elements become different from each other. As a result, the reflection loss increases at a specific beam steering angle, which causes damage and performance deterioration of the semiconductor transmission / reception module of the antenna device. Therefore, the performance of the radar naturally degrades.

When the radar is beam steered, the active reflection coefficient should have a small value at the desired frequency and beam steering angle. In the present invention, as shown in FIG. 5, it can be seen that the beam steering angle θ is 0 ° to 70 °, and φ is 0 ° to 360 °, which is the largest value of the active return loss when the beam steering is performed.

6 is a plot of the beam width of the antenna in 2D. Fig. 6 (a) shows a 2D beam pattern of a general dipole antenna, and Fig. 6 (b) shows a 2D beam pattern of a dipole antenna including a detachable antenna according to the present invention.

7 (a) shows the active reflection loss of a general dipole antenna when beam steering is performed under the conditions of beam steering angle? = 0 to 70 and? = 0 to 360, and FIG. 7 Shows the active return loss of a dipole antenna including a separable directivity body according to the present invention when beam steering is performed under the condition of beam steering angle [theta] = 0 DEG to 70 DEG and [phi] = 0 DEG to 360 DEG. As shown in FIG. 7 (b), the beam width of the structure including the separable directivity body is widened, and the active reflection loss is reduced. That is, it can be confirmed that the active reflection loss of the dipole antenna including the separable directivity is much better at the desired beam steering angle.

The present invention described above can be applied to a radiation device for radar using an active planar phase array like a multifunctional radar. The dipole antenna according to the present invention can be applied to all radar antennas using a PCB type radiating element. For example, it can be applied to a multifunction radar or the like.

1 to 7, an embodiment of the present invention has been described. Best Mode for Carrying Out the Invention Hereinafter, preferred forms of the present invention that can be inferred from the above embodiment will be described.

The dipole antenna device includes a conductor portion, a feeding portion, and a directing body portion.

The conductor portion includes a first conductor and a second conductor formed symmetrically on a flat plate. This conductor section corresponds to the conductor 120 of Fig.

The first conductor and the second conductor may be formed such that one ends thereof are bent in different directions.

The power supply portion is connected to the first conductor and the second conductor. This power supply unit corresponds to the power supply line 130 of FIG.

The directing body portion includes a first directing body and a second directing body formed separately from each other at a predetermined distance from the first conductor and the second conductor on the flat plate. That is, the directing body portion includes a first directing body and a second directing body separated and formed on the flat plate at predetermined distances from the first conductor and the second conductor, respectively, so as to have a predetermined length. This directing body is a concept corresponding to the separating directing body 110 in Fig.

The first directing body and the second directing body may be formed to be inclined with respect to the signal output direction of the dipole antenna apparatus.

The longitudinal direction of the first directing body may be formed differently from the longitudinal direction of the second directing body.

The inclination angle of the first directional element with respect to the signal output direction of the dipole antenna device may be different from the inclination angle of the second directional element with respect to the signal output direction of the dipole antenna device.

The longitudinal direction of the first conductor and the longitudinal direction of the second conductor may be formed parallel to the bent direction of the first conductor and the bent direction of the second conductor, respectively.

Meanwhile, the dipole antenna device may further include at least one of a reflector and an insulator.

The reflector is formed with a predetermined width from one end of the flat plate toward at least one side. This reflector corresponds to the reflector 150 of FIG.

The reflector may be formed with a predetermined width in a direction perpendicular to the longitudinal direction of the flat plate.

The insulator is in the form of a polyhedron, one surface of which is formed in close contact with the flat plate, and the other surface is formed in close contact with the reflection plate. As an example, such an insulator may be implemented in a rectangular parallelepiped shape as shown in Fig. This insulator corresponds to the insulator 140 of Fig.

The insulator may be formed with a predetermined width in the horizontal direction with respect to the longitudinal direction of the flat plate.

Next, a radar signal transmitting and receiving apparatus having a dipole antenna apparatus will be described.

The radar signal transmitting and receiving apparatus includes a radar signal generating unit and a dipole antenna apparatus.

The radar signal generation unit generates a radar signal.

The dipole antenna device transmits and receives a radar signal. The dipole antenna device has been described above, and a detailed description thereof will be omitted here.

The radar signal transmitting / receiving apparatus described above can be mounted to the multi-function radar system in this embodiment.

It is to be understood that the present invention is not limited to these embodiments, and all elements constituting the embodiment of the present invention described above are described as being combined or operated in one operation. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. In addition, although all of the components may be implemented as one independent hardware, some or all of the components may be selectively combined to perform a part or all of the functions in one or a plurality of hardware. As shown in FIG. In addition, such a computer program may be stored in a computer readable medium such as a USB memory, a CD disk, a flash memory, etc., and read and executed by a computer to implement an embodiment of the present invention. As the recording medium of the computer program, a magnetic recording medium, an optical recording medium, a carrier wave medium, and the like can be included.

Furthermore, all terms including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined in the Detailed Description. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

It will be apparent to those skilled in the art that various modifications, substitutions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims

A conductor portion including a first conductor and a second conductor formed symmetrically on a flat plate;
A feeder connected to the first conductor and the second conductor;
A directing body portion including a first directing body and a second directing body separately formed on the flat plate at a predetermined distance from each of the first conductor and the second conductor with a predetermined length;
A reflection plate formed at a predetermined width from one end of the flat plate at least in one direction; And
And the other surface is in close contact with the flat plate and the other surface is in close contact with the reflection plate,
Wherein the dipole antenna device comprises:

The method according to claim 1,
Wherein the first directing body and the second directing body are formed to be inclined with respect to a signal output direction of the dipole antenna apparatus.

3. The method of claim 2,
And the longitudinal direction of the first direction body is different from the longitudinal direction of the second direction body.

3. The method of claim 2,
Wherein the inclination angle of the first directional element with respect to the signal output direction of the dipole antenna device is different from the inclination angle of the second directional element with respect to the signal output direction of the dipole antenna device.

The method according to claim 1,
The first conductor and the second conductor are formed such that one ends thereof are bent in different directions,
Wherein the longitudinal direction of the first conductor and the longitudinal direction of the second conductor are parallel to the bending direction of the first conductor and the bending direction of the second conductor, respectively.

delete

The method according to claim 1,
Wherein the reflection plate is formed with a width in a direction perpendicular to the longitudinal direction of the flat plate.

delete

The method according to claim 1,
Wherein the insulator is formed with a predetermined width in the horizontal direction with respect to the longitudinal direction of the flat plate.