KR101777015B1 - Antenna apparatus for generating a virtual l-shaped antenna using a rotating - Google Patents

Antenna apparatus for generating a virtual l-shaped antenna using a rotating Download PDF

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Publication number
KR101777015B1
KR101777015B1 KR1020150148251A KR20150148251A KR101777015B1 KR 101777015 B1 KR101777015 B1 KR 101777015B1 KR 1020150148251 A KR1020150148251 A KR 1020150148251A KR 20150148251 A KR20150148251 A KR 20150148251A KR 101777015 B1 KR101777015 B1 KR 101777015B1
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KR
South Korea
Prior art keywords
antenna
antenna elements
radar signal
virtual
rotation
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KR1020150148251A
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Korean (ko)
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KR20170047773A (en
Inventor
오대건
남현수
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재단법인대구경북과학기술원
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Priority to KR1020150148251A priority Critical patent/KR101777015B1/en
Publication of KR20170047773A publication Critical patent/KR20170047773A/en
Application granted granted Critical
Publication of KR101777015B1 publication Critical patent/KR101777015B1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
    • H01Q3/04—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation
    • H01Q3/06—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation over a restricted angle
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/24—Polarising devices; Polarisation filters 
    • H01Q15/242—Polarisation converters
    • H01Q15/246—Polarisation converters rotating the plane of polarisation of a linear polarised wave
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/0087—Apparatus or processes specially adapted for manufacturing antenna arrays
    • H01Q21/0093—Monolithic arrays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

An antenna device for generating a virtual L-shaped antenna using rotation is disclosed.
The antenna device includes a rotating plate rotated by a motor; And a plurality of antenna elements formed as a one-dimensional array around a rotation axis of the rotating plate, wherein the antenna elements can generate a virtual antenna capable of measuring a target while being rotated by rotation of the rotating plate.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an antenna device for generating a virtual L-

The present invention relates to an antenna device for generating a virtual L-shaped antenna.

An antenna of a one-dimensional array can estimate only an azimuth on a two-dimensional plane. Therefore, an antenna that can measure the elevation angle and the azimuth angle in the three-dimensional space by configuring the antennas in a two-dimensional array like the L-type antenna has been developed.

In the conventional image radar technology using the L-shaped antenna, the antenna elements having a half wavelength interval are arranged in the vertical direction and the horizontal direction, so that the arrangement of the antenna elements is L-shaped so that the angle between the antenna elements is 90 degrees, The distance, elevation, and azimuth of the target were measured using the phase difference of the array. In this case, in the conventional L-shaped antenna, since the area of the opening surface of the antenna becomes small in order that the antenna elements in the vertical direction and the antenna elements in the horizontal direction form a half wavelength interval, there is a problem in that the gain of the antenna is lowered. As the gain of the antenna is lowered, the conventional L-shaped antenna has a limitation that it is difficult to recognize a target located at a remote location.

Therefore, an antenna device capable of recognizing a target located at a remote location is being demanded.

The present invention can provide an apparatus and method for precisely estimating a distance, an elevation angle, an azimuth angle, and a velocity between a target located at a remote location and an antenna device by rotating a one-dimensional array of antenna elements to form a virtual L-

An antenna device according to an embodiment of the present invention includes: a rotating plate rotated by a motor; And a plurality of antenna elements formed as a one-dimensional array around a rotation axis of the rotating plate, wherein the antenna elements generate a virtual antenna capable of measuring a target while being rotated by rotation of the rotating plate.

The virtual antenna of the antenna apparatus according to an embodiment of the present invention may further include a difference between a phase of a first antenna signal received at a predetermined angle and a phase of a second antenna signal received at an angle rotated by 90 degrees from the predetermined angle Can be used to measure the target.

The antenna elements may be arranged in a one-dimensional array so that the rotation plate of the antenna device according to an embodiment of the present invention is perpendicular to the imaginary line from the rotation axis to the boundary of the rotation plate.

The rotary plate of the antenna device according to an embodiment of the present invention may be arranged at regular intervals along a virtual line from the rotation axis to the boundary of the rotary plate.

The predetermined interval of the antenna apparatus according to an embodiment of the present invention may be determined according to a half wave length of an antenna signal output from the antenna elements.

According to an embodiment of the present invention, a distance, an elevation angle, an azimuth angle, and a velocity between a target located at a remote location and an antenna device can be accurately estimated by rotating a one-dimensional array of antenna elements to form a virtual L-shaped antenna.

1 is a view illustrating an antenna apparatus according to an embodiment of the present invention.
2 is a first embodiment of an antenna device according to an embodiment of the present invention.
3 is a second embodiment of an antenna device according to an embodiment of the present invention.
4 is an operation example of the antenna apparatus according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view illustrating an antenna apparatus according to an embodiment of the present invention.

The antenna apparatus 100 may include a rotating plate 110, an antenna element 120, a motor 130, and a processor 140 as shown in FIG.

The rotating plate 110 has a plurality of antenna elements 120 arranged therein and can be rotated by the motor 130.

At this time, the antenna elements 120 may be arranged as a one-dimensional array in the rotating plate 110 so as to be perpendicular to the imaginary line from the rotating axis to the boundary of the rotating plate 110.

In addition, one-dimensional arrays of antenna elements may be arranged at regular intervals along a virtual line from the rotation axis to the boundary of the rotary plate 110 on the rotary plate 110. At this time, the predetermined interval at which the one-dimensional arrays of the antenna elements 120 are arranged may be determined according to a half wave length of an antenna signal output from the antenna elements.

The plurality of antenna elements 120 may be formed as a one-dimensional array around the rotation axis of the rotary plate 110. In this case, the one-dimensional array of the antenna elements can transmit a predetermined radar signal according to the interval between the antenna elements 120 included in the one-dimensional array and the number of the antenna elements 120 included in the one-dimensional array.

The plurality of antenna elements 120 can receive the radar signal reflected by the target, respectively.

The motor 130 may rotate the rotary plate 110 about the rotary shaft 110.

The processor 140 may generate a virtual L-shaped antenna capable of measuring the target using the radar signal received by the antenna elements 120 whose positions are changed by the rotation of the rotating plate 110. [

Specifically, the processor 140 may store the radar signal received by the antenna elements 120 in a predetermined position as a first radar signal in the memory. Next, the processor 140 can confirm whether or not the antenna elements 120 have moved to a position rotated by 90 degrees with respect to a preset position by the rotation of the rotary plate 110. [

When the antenna elements 120 move to a position rotated by 90 degrees with respect to a predetermined position, the processor 140 determines that the antenna elements 120, which have moved 90 degrees from the predetermined position, The signal can be stored in the memory as the second radar signal.

In this case, the difference between the phase of the first radar signal and the phase of the second radar signal is determined by considering the time difference due to the rotation of the antenna elements 120, The phase difference between the phase of the radar signal and the phase of the radar signal received by the antenna elements in the horizontal direction.

Accordingly, the processor 140 sets and processes the first radar signal and the second radar signal as a radar signal received by the antenna elements in the vertical direction of the virtual L-shaped antenna and a radar signal received by the antenna elements in the horizontal direction, respectively, The target can be measured in the same manner as the measurement result of an actual L-shaped antenna at the positions of the antenna elements 120. [

At this time, since the virtual L-shaped antenna can estimate the distance, the elevation angle, the azimuth angle, and the velocity between the target and the antenna device 100 without restricting the area of the opening surface, the gain reduction of the antenna due to the area limitation of the opening surface can be prevented .

Also, since the gain reduction of the antenna is prevented, the antenna device 100 can precisely estimate the distance, elevation angle, azimuth angle, and speed between the target located at a remote location and the antenna device 100.

In order to detect a target at different angles, a conventional antenna apparatus must include a plurality of actual L-shaped antennas arranged at different angles. On the other hand, the antenna device 100 may detect the target at different angles by adding the angle at which the processor 140 stores the radar signal.

For example, the processor 140 may store the first radar signal at 0 degrees and 45 degrees, respectively, and store the second radar signal at 90 degrees and 135 degrees, respectively. At this time, the processor 140 can detect the target in the same manner as the actual L-shaped antenna installed at 0 degree using the first radar signal stored at 0 degrees and the second radar signal stored at 90 degrees. Also, the processor 140 may detect the target in the same manner as the actual L-shaped antenna installed at an angle of 45 degrees using the first radar signal stored at 45 degrees and the second radar signal stored at 135 degrees.

That is, the antenna device 100 can add the virtual L-shaped antenna by adding the angle at which the processor 140 stores the radar signal without adding the antenna elements 120. However, since the first radar signal must be stored in the memory in order to generate the virtual L-shaped antenna, the first radar signal is measured at a different angle from the angle of 90 degrees measured from the angle of the first radar signal until the second radar signal is measured It may require a memory capacity to store the measured first radar signals.

Therefore, the antenna device 100 adds a virtual L-shaped antenna according to the performance of the processor 140 and the capacity of the memory for storing the radar signal, thereby determining the distance between the target measured by the antenna device 100 and the antenna device 100, , The azimuth angle, and the velocity can be estimated more precisely.

2 is a first embodiment of an antenna device according to an embodiment of the present invention.

2, the antenna elements 120 may be disposed as a one-dimensional array 220 on the rotation axis 210 of the rotary plate 110. [

In addition, a plurality of one-dimensional arrays of antenna elements may be arranged on the rotating plate 110. Dimensional array 230 of antenna elements and the one-dimensional array 230 of antenna elements, except for the first dimensional array 220 of antenna elements disposed on the rotation axis 210, To the boundary of the rotary plate 110. [0051] As shown in FIG. At this time, the predetermined interval may be a half wavelength (? / 2) interval as shown in FIG.

3 is a second embodiment of an antenna device according to an embodiment of the present invention.

3, the antenna device 100 may arrange the one-dimensional array of the antenna elements in a region other than the rotation axis 310 of the rotating plate 110. [

3, the antenna elements 120 may be arranged as a one-dimensional array 320 so as to be perpendicular to the imaginary line from the rotation axis 310 to the boundary of the rotary plate 110 .

In addition, a plurality of one-dimensional arrays of antenna elements may be arranged on the rotating plate 110. The one-dimensional array 320 of the antenna elements, the one-dimensional array 330 of the antenna elements and the one-dimensional array 330 of the antenna elements are arranged in a virtual manner from the rotation axis to the boundary of the rotating plate 110, They can be arranged at regular intervals along the line. At this time, the predetermined interval may be a half wavelength (? / 2) interval as shown in FIG.

4 is an operation example of the antenna apparatus according to an embodiment of the present invention.

Dimensional array of antenna elements 400 may begin to rotate counterclockwise as shown in (a). At this time, the antenna apparatus 100 may store the antenna signal received at the position 410 shown in (a) as the first antenna signal.

The one-dimensional arrangements 300 of the antenna elements move to the position shown in (b) and the position shown in (c) according to the rotation of the rotating plate, and the position 410 ).

At this time, the antenna device 100 stores the antenna signal received at the position 420 shown in (b) of the one-dimensional array of antenna elements 400 as a second antenna signal, A virtual L-shaped antenna can be generated using the second antenna signal.

At this time, the virtual L-shaped antenna is one in which the one-dimensional arrangements 400 of the antenna elements located at the position 410 are the antenna elements in the vertical direction, and the one- The target can be measured in the same manner as the L-shaped antenna, which is an antenna element of the antenna.

In addition, the antenna device 100 stores the antenna signals received at the location 420 shown in (b) in the one-dimensional array of antenna elements 400 as a first antenna signal, The controller 400 may store the received antenna signal in the position shown in (c) as a second antenna signal, and may generate a virtual L-shaped antenna using the previously stored first antenna signal and the second antenna signal.

At this time, the virtual L-shaped antenna is formed by arranging the one-dimensional arrays 400 of the antenna elements located at the position 420 in the horizontal direction and the one-dimensional arrays 400 of the antenna elements located at the position shown in (c) The target can be measured in the same manner as the L-shaped antenna, which is the antenna elements in the vertical direction.

That is, the antenna device 100 can add a virtual L-shaped antenna arranged at different angles without adding antenna elements.

The present invention can precisely estimate distance, elevation angle, azimuth angle, and velocity between a target located at a remote location and an antenna device by rotating a one-dimensional array of antenna elements to form a virtual L-shaped antenna.

The method according to an embodiment may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions to be recorded on the medium may be those specially designed and configured for the embodiments or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

110:
120: Antenna element

Claims (5)

A motor rotating disc; And
A plurality of antenna elements formed as a one-dimensional array around the rotation axis of the rotating plate
(L-shaped) antenna capable of measuring a target using radar signals received by the antenna elements whose positions are changed by rotation of the rotary plate,
Lt; / RTI >
The processor comprising:
The radar signals received by the antenna elements at a predetermined position are stored in a memory as a first radar signal and the antenna elements moved to a position rotated by 90 degrees with respect to the preset position by rotation of the rotating plate Storing a radar signal in a memory as a second radar signal,
And the first radar signal and the second radar signal are respectively set as a radar signal received by the antenna elements in the vertical direction of the virtual L-shaped antenna and a radar signal received by the antenna elements in the horizontal direction. The method according to claim 1,
The virtual antenna includes:
And measures the target using the difference between the phase of the first radar signal and the phase of the second radar signal. The method according to claim 1,
The rotating plate includes:
Wherein the antenna elements are disposed as a one-dimensional array so as to be perpendicular to an imaginary line from a rotation axis of the rotation plate to a boundary of the rotation plate. The method according to claim 1,
The rotating plate includes:
Dimensional array of the antenna elements are arranged at regular intervals along a virtual line from a rotation axis of the rotation plate to a boundary of the rotation plate. 5. The method of claim 4,
The predetermined interval
Wherein the antenna element is determined according to a half wave length of an antenna signal output from the antenna elements.
KR1020150148251A 2015-10-23 2015-10-23 Antenna apparatus for generating a virtual l-shaped antenna using a rotating KR101777015B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019190186A1 (en) * 2018-03-27 2019-10-03 (주)스마트레이더시스템 Radar device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102188596B1 (en) 2019-04-26 2020-12-08 연세대학교 산학협력단 Radar using array antenna rotation and method for acquiring 3d image thereof
EP4302113A4 (en) * 2021-04-06 2024-08-28 Elta Systems Ltd Direction finder antenna system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100979943B1 (en) * 2010-05-26 2010-09-06 삼성탈레스 주식회사 Apparatus and method for adjusting angle of vehicle radar antenna
JP2010210647A (en) 2010-06-30 2010-09-24 Mitsubishi Electric Corp Method of measuring array antenna
JP2015179950A (en) * 2014-03-19 2015-10-08 国立大学法人東北大学 antenna device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100979943B1 (en) * 2010-05-26 2010-09-06 삼성탈레스 주식회사 Apparatus and method for adjusting angle of vehicle radar antenna
JP2010210647A (en) 2010-06-30 2010-09-24 Mitsubishi Electric Corp Method of measuring array antenna
JP2015179950A (en) * 2014-03-19 2015-10-08 国立大学法人東北大学 antenna device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019190186A1 (en) * 2018-03-27 2019-10-03 (주)스마트레이더시스템 Radar device
US11435435B2 (en) 2018-03-27 2022-09-06 Smart Radar System, Inc. Radar device

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