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WO2017078187A1 - Antenne réseau - Google Patents

Antenne réseau Download PDF

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Publication number
WO2017078187A1
WO2017078187A1 PCT/KR2015/011712 KR2015011712W WO2017078187A1 WO 2017078187 A1 WO2017078187 A1 WO 2017078187A1 KR 2015011712 W KR2015011712 W KR 2015011712W WO 2017078187 A1 WO2017078187 A1 WO 2017078187A1
Authority
WO
WIPO (PCT)
Prior art keywords
radiating
power
array antenna
array
radiating elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2015/011712
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English (en)
Korean (ko)
Inventor
백정우
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
S-1 Corp
S1 Corp
Original Assignee
S-1 Corp
S1 Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by S-1 Corp, S1 Corp filed Critical S-1 Corp
Priority to JP2018522751A priority Critical patent/JP2019505106A/ja
Priority to GB1807149.8A priority patent/GB2558492B/en
Publication of WO2017078187A1 publication Critical patent/WO2017078187A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061—Two dimensional planar arrays
    • H01Q21/065—Patch antenna array
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/0006—Particular feeding systems
    • H01Q21/0075—Stripline fed arrays
    • 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
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/28—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the amplitude
    • 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

Definitions

  • the present invention relates to an array antenna in which radiating elements are arranged in series.
  • Patch array antennas in the form of printed microstrips are commonly used in radar detectors for the 24 GHz Industrial, Scientific and Medical (ISM) band.
  • ISM Industrial, Scientific and Medical
  • the Chebyshev, binomial, and taylor Complex structures such as taylor
  • a complex feeding circuit is required for feeding each radiating element. The design and performance optimization of array antennas with complex feed circuits takes a long time.
  • the patch array antenna for the 24 GHz band is designed to uniformly input the magnitude and phase of the current into each patch.
  • array antennas with a uniform magnitude and phase of the current input into the patch exhibit high sidelobe level characteristics, resulting in a very uneven detection area.
  • the detection area of the radar detector is very narrow, the side lobe level of the beam generated by the array antenna is high, so that it is difficult to generate a narrow and uniform beam only by the radar algorithm.
  • An array antenna having high gain and low side lobe level characteristics is provided.
  • a power distribution for distributing the power provided from the feeder at a first rate to the at least one radiating part comprising a plurality of radiating elements, a feed line connecting the plurality of radiating elements, and at least one radiating part.
  • An array antenna is provided comprising a portion.
  • the first ratio in the array antenna may be determined based on an array function related to the side lobe level in the first direction that is perpendicular to the direction in which the plurality of radiating elements are arranged.
  • the conductance of the first radiating element located in the center of the radiating part of the plurality of radiating elements may be greater than the conductance of at least one second radiating element located at the edge of the radiating part of the plurality of radiating elements.
  • the conductance of the plurality of radiating elements in the array antenna may be reduced at a second rate in a second direction from the first radiating element to the at least one second radiating element.
  • the second ratio in the array antenna may be a ratio determined based on an array function related to the side lobe levels in the second direction.
  • the array function in the array antenna may be a chebyshev array function.
  • the size of the plurality of radiating elements in the array antenna may be reduced at a second rate in a second direction from the first radiating element to the at least one second radiating element.
  • the second ratio in the array antenna may be a ratio of the feed factor determined based on the array factor function of the array antenna and the array function related to the side lobe level in the second direction.
  • the feeding coefficient in the array antenna may be a coefficient determined by comparing the coefficients of the array factor function and the array function.
  • the array antenna may further include a dielectric substrate on which at least one radiating part is printed in a patch form.
  • the feed line may control the phase of the current input to the plurality of radiating elements.
  • a feed line may connect a plurality of radiating elements in series.
  • the power divider may match the impedance of the at least one radiator with respect to the feeder.
  • the power divider may include at least one radiator, at least one first power divider providing power distributed at a first rate, and at least one first power divider to share the power provided from the feeder. It may include a second power distribution to provide in size.
  • the impedance of the first power divider in the array antenna may be determined according to the first ratio and a predetermined impedance constant.
  • uniform sensing performance in the horizontal and vertical directions may be secured by implementing a sub-level (-20 dB) or less in the horizontal and vertical directions based on the Chebyshev arrangement function.
  • a beam having various inclinations may be formed in a forward direction, and the width of the beam may be adjusted by adjusting the number of radiating elements. Can be controlled.
  • FIG. 1A is a diagram illustrating a plan view of an array antenna according to an exemplary embodiment
  • FIG. 1B is a diagram illustrating a perspective view.
  • FIG. 2 is a diagram illustrating a radiator included in an array antenna according to an exemplary embodiment.
  • FIG. 3 is a diagram illustrating a power distribution unit according to an exemplary embodiment.
  • FIG. 1A is a diagram illustrating a plan view of an array antenna according to an exemplary embodiment
  • FIG. 1B is a diagram illustrating a perspective view.
  • the array antenna 100 includes a radiating unit 110, a power distribution unit 120, and a power feeding unit 130.
  • the radiating unit 110, the power distribution unit 120, and the power feeding unit 130 of the array antenna 100 may be arranged on the dielectric substrate 200 and the ground plane 300.
  • the radiator 110 includes a plurality of radiating elements 111 and a feed line 112 connecting the plurality of radiating elements in series, and the array antenna 100 according to an embodiment includes a plurality of radiating parts 110.
  • the radiator 110 may be printed in the form of a micro strip, and the radiation conductance (G R ) of each radiating element 111 may be adjusted according to various requirements regarding antenna design such as gain and side lobe level characteristics. have.
  • the feed line 112 of the radiating unit 110 may control the inclination of the beam to be emitted by adjusting the phase of the current input to each radiating element 111.
  • the feed line 112 may be a line having an impedance of a predetermined magnitude, and the impedance of the line according to an embodiment may be 100 ohm.
  • the power divider 120 includes a first power divider 121, a second power divider 122, and a third power divider 123.
  • the power distributor 120 may transfer the power provided from the power supply unit 130 to the radiator 110.
  • the first power divider 121 operates as an equal power divider having a constant output power ratio (for example, -3 dB)
  • the second power divider 122 and the third power divider 123 are each
  • the radiator 110 may operate as an uneven power divider for distributing power of different sizes.
  • the second power distributor 122 and the third power distributor 123 may match the impedance of the radiator 110 with respect to the power supply unit 130.
  • an equal Wilkinson power divider may be used as the first power divider 121 and an uneven Wilkinson power divider as the second power divider 122 and the third power divider 123. Can be used.
  • the power supply unit 130 may transmit power to be provided to the radiator to the power distribution unit 120.
  • the power supply unit 130 may be changed into various types of power supply such as a coaxial line or a coplanar wavequide (CPW) using a transition structure.
  • CPW coplanar wavequide
  • FIG. 2 is a diagram illustrating a radiator included in an array antenna according to an exemplary embodiment.
  • the plurality of radiating elements 111 included in the radiating unit 110 according to an exemplary embodiment are arranged in series in the y direction, and the largest radiating element positioned at the center of the plurality of radiating elements 111 has the largest size and the center. At both ends, the size of the radiating element decreases.
  • the size of each radiating element 111 may be determined according to the radiating conductance. That is, a large radiating element may have a large radiating conductance compared to a small radiating element.
  • the array antenna according to an embodiment may be manufactured in a form printed on a dielectric substrate, each radiating element may be sized as a plane having an x-direction length (width) and a y-direction length (length).
  • the radiator 110 according to an exemplary embodiment includes nine radiating elements E1 to E9, and the number of radiating elements may be determined according to the purpose of using the array antenna according to an exemplary embodiment. have.
  • Radiation conductance of the plurality of radiating elements 111 included in the radiating unit 110 may be determined according to an array function having low side lobe level characteristics.
  • the Chebyshev array function with a y direction (vertical) side lobe level of -20 dB was used to determine the radiated conductance.
  • the angle at which the beam is inclined for the forward (+ z direction) directivity characteristic of the array antenna 100 may be designed to 0 degrees with respect to the z axis.
  • Equation 1 is an array factor (AF) of the array antenna 100 according to an embodiment, and the magnitude of the current applied to each of the radiating elements 111 may be calculated through Equation 1 and the Chebyshev array function. Can be.
  • Equation 1 i is a current applied to each radiating element 111, and AF is a function of ⁇ . Equation 2 represents ⁇ . If Equation 1 is developed, 15 terms may be calculated as in Equation 3 below.
  • the phase of the current input to each radiating element is 0 degrees, the phase of the current in each radiating element can be adjusted according to the radiation angle of the beam required according to the use environment.
  • the number, gain or beam width of the radiating elements can also be adjusted as appropriate. Equation 4 below is an expression of the expansion of Equation 1, and Equation 5 is an 8th order Chebyshev array function.
  • equation (6) By comparing the coefficients of the cos term in equations (4) and (5), equation (6) can be obtained.
  • i 0n , i 1n , i 2n , i 3n, and i 4n represent current magnitudes normalized based on the current magnitude of i 0 .
  • the current magnitude normalized for each radiating element 111 is a vertical power feeding coefficient.
  • Table 1 below shows the power supply coefficient of each radiating element 111 and the conductance of each radiating element 111 according to an embodiment calculated based on the array argument function defined in Equation 1 below.
  • the feed coefficient of each radiating element may be calculated by comparing coefficients between the coefficient of the cos term of the array argument function of Equation 1 and the coefficient of the Chebyshev array function, and the conductance based on the feed coefficient a n . Can be calculated.
  • Equation 9 represents the sum of conductances of all radiating elements included in the radiating unit 110.
  • the total radiating conductance G t may be calculated based on the constant of proportionality K and the feed coefficient a n of each radiating element 111, and in one embodiment, each radiating element The sum of the proportionality constant and the power feeding coefficient of 111 is one.
  • a proportionality constant is obtained based on each power supply coefficient (a n ) calculated by Equation 1 below.
  • the normalized radiation conductance of each radiating element 111 may be defined as in Equation 11 below.
  • the characteristic impedance of each feed line 112 was determined to be 100 [ ⁇ ], so the normalized impedence of the feed line 112 was also set to 100 [ ⁇ ].
  • the radiating element according to an embodiment has been optimized in width and length to increase the gain of the array antenna.
  • FIG. 3 is a diagram illustrating a power distribution unit according to an exemplary embodiment.
  • the power distribution unit 120 may distribute power of different sizes to each of the radiation units 110.
  • the Chebyshev arrangement having the side lobe level of -30 dB in the horizontal direction is the amount of power distributed from the second power distributor 122 and the third power distributor 123 of the power distributor 120 to the radiator 110 in the horizontal direction. It can be calculated based on a function. At this time, the side lobe level in the horizontal direction may be determined as a size that can improve the detection performance in the horizontal direction.
  • the power divider 120 includes a first power divider 121, a second power divider 122, and a third power divider 123-1, 123-2, 123-3, 123-4).
  • the power distributor 120 may distribute the power provided from the power supply unit 130 to apply currents i x1 to i x8 to each radiator 110 of the array antenna 100.
  • the first power divider 121 may operate as an equal power divider that outputs a constant power using the resistor R 0 .
  • the second power distributor 122 may output different power to each of the third power distributors 123-1, 123-2, 123-3, and 123-4.
  • the third power distributors 123-1, 123-2, 123-3, and 123-4 may operate as non-uniform power dividers for distributing power of different sizes to the radiators 110.
  • the third power distributors 123-1, 123-2, 123-3, and 123-4 are resistors R 1 to R 4 and symmetrically arranged impedances Z 1R , Z ' 1R , Z 1L. , Z ' 1L , Z 2R , Z' 2R , Z 2L , Z ' 2L , Z 3R , Z' 3R , Z 3L , Z 4R , Z' 4R , Z 4L , Z ' 4L ) .
  • the n th unit 123-n of the third power divider is connected to the n th unit 123-n using the resistors R- n and impedances Z nR , Z ' nR , Z nL, and Z' nL .
  • Power may be provided to the quadrant 110.
  • the magnitude of the current applied to each of the radiating parts 110 in the horizontal direction (that is, the horizontal feeding coefficient) is calculated.
  • a horizontal power feeding coefficient may be obtained as shown in Equation 13.
  • the feed coefficients for the respective radiating elements included in the array antenna 100 according to an embodiment which are calculated using the vertical feed coefficient of Equation 8 and the horizontal feed coefficient of Equation 13, are shown in Table 2 below. same.
  • the feed coefficients of the respective radiating elements 111 are shown, the normalized vertical feed coefficient of Equation 8 is applied to the vertical direction, and the horizontal feed coefficient of Equation 13 is applied to the horizontal direction.
  • the feeding factor 0.5194 of the radiating element corresponding to E1 in three rows is 0.6014 times the feeding factor 0.8637 of the radiating element corresponding to E5 in three columns, and the feeding coefficient of the radiating element in eight rows among the radiating elements corresponding to E5 in each row.
  • 0.2910 is 0.1750 / 0.6014 times the feed coefficient of the radiating element of one row.
  • the third power distribution unit 123 distributes power having different sizes in the horizontal direction according to Equation 13, and impedances Z iR , Z iL , and Z of the elements included in the third power distribution unit 123.
  • ' iR , Z' iL and R may be calculated based on Equation 14 below.
  • Z 0 is a predetermined impedance constant, and k represents a ratio of non-uniform power. In one embodiment Z 0 is set to 50 ohms.
  • K and impedance of the third power distribution unit 123 according to an embodiment are shown in Table 3 (k and impedance of the first third power distribution unit 123-1), Table 4 (second third power distribution unit) K and impedance of 123-2), Table 5 (k and impedance of the third third power distribution unit 123-3), and k of Table 6 (fourth third power distribution unit 123-4) And impedance).
  • the array antenna according to an embodiment achieves low sidelobe levels (-30 dB and -20 dB, respectively) in the horizontal and vertical directions based on the Chebyshev array function to ensure uniform sensing performance in the horizontal and vertical directions. can do.
  • a beam having various inclinations may be formed in all directions, and the width of the beam is controlled by adjusting the number of radiating elements. can do.

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  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Aerials (AREA)

Abstract

La présente invention concerne une antenne réseau présentant des propriétés de gain élevé et de bas niveau de lobes latéraux par rapport aux directions horizontale et verticale en se basant sur des fonctions de Tchebychev de réseau. L'antenne réseau comporte: une pluralité d'éléments de rayonnement; au moins une unité de rayonnement comportant une ligne d'alimentation servant à relier la pluralité d'éléments de rayonnement; et une unité de distribution de puissance servant à distribuer, dans un premier rapport, une puissance fournie à partir d'une unité d'alimentation à l'unité ou aux unités de rayonnement.
PCT/KR2015/011712 2015-11-02 2015-11-03 Antenne réseau Ceased WO2017078187A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2018522751A JP2019505106A (ja) 2015-11-02 2015-11-03 アレイアンテナ
GB1807149.8A GB2558492B (en) 2015-11-02 2015-11-03 Array antenna

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2015-0153377 2015-11-02
KR1020150153377A KR101735782B1 (ko) 2015-11-02 2015-11-02 배열 안테나

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WO2017078187A1 true WO2017078187A1 (fr) 2017-05-11

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PCT/KR2015/011712 Ceased WO2017078187A1 (fr) 2015-11-02 2015-11-03 Antenne réseau

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KR (1) KR101735782B1 (fr)
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WO (1) WO2017078187A1 (fr)

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CN107623192A (zh) * 2017-08-23 2018-01-23 湖南纳雷科技有限公司 一种结合并馈功分网络的微带串馈阵列天线
CN107645066A (zh) * 2017-08-03 2018-01-30 东莞市云通通讯科技有限公司 提高副瓣抑制的通信基站天线
CN111276784A (zh) * 2020-03-23 2020-06-12 深圳市豪恩汽车电子装备股份有限公司 微带阵列天线及其微带功分器
CN111342210A (zh) * 2020-02-25 2020-06-26 福瑞泰克智能系统有限公司 一种旗形梳状微带天线装置、雷达及车辆
CN114094322A (zh) * 2020-08-24 2022-02-25 智易科技股份有限公司 用于抑制旁波瓣的增益的天线
CN114566795A (zh) * 2022-03-10 2022-05-31 国网陕西省电力有限公司电力科学研究院 一种平顶方向图毫米波雷达天线及系统
CN116683178A (zh) * 2023-07-24 2023-09-01 江苏集萃中科纳米科技有限公司 柔性天线阵列及其制作方法

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KR101900839B1 (ko) * 2018-02-12 2018-09-20 주식회사 에이티코디 배열 안테나
KR102422664B1 (ko) * 2018-10-05 2022-07-18 동우 화인켐 주식회사 안테나 구조체 및 이를 포함하는 디스플레이 장치
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CN107645066A (zh) * 2017-08-03 2018-01-30 东莞市云通通讯科技有限公司 提高副瓣抑制的通信基站天线
CN107623192A (zh) * 2017-08-23 2018-01-23 湖南纳雷科技有限公司 一种结合并馈功分网络的微带串馈阵列天线
CN107623192B (zh) * 2017-08-23 2024-10-18 湖南纳雷科技有限公司 一种结合并馈功分网络的微带串馈阵列天线
CN111342210A (zh) * 2020-02-25 2020-06-26 福瑞泰克智能系统有限公司 一种旗形梳状微带天线装置、雷达及车辆
CN111276784A (zh) * 2020-03-23 2020-06-12 深圳市豪恩汽车电子装备股份有限公司 微带阵列天线及其微带功分器
CN114094322A (zh) * 2020-08-24 2022-02-25 智易科技股份有限公司 用于抑制旁波瓣的增益的天线
CN114566795A (zh) * 2022-03-10 2022-05-31 国网陕西省电力有限公司电力科学研究院 一种平顶方向图毫米波雷达天线及系统
CN116683178A (zh) * 2023-07-24 2023-09-01 江苏集萃中科纳米科技有限公司 柔性天线阵列及其制作方法

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GB2558492A (en) 2018-07-11
KR20170051046A (ko) 2017-05-11
GB201807149D0 (en) 2018-06-13
JP2019505106A (ja) 2019-02-21
KR101735782B1 (ko) 2017-05-15
GB2558492B (en) 2022-02-02

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