WO2020037662A1 - Réseau d'antennes dipôles - Google Patents

Réseau d'antennes dipôles Download PDF

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Publication number
WO2020037662A1
WO2020037662A1 PCT/CN2018/102291 CN2018102291W WO2020037662A1 WO 2020037662 A1 WO2020037662 A1 WO 2020037662A1 CN 2018102291 W CN2018102291 W CN 2018102291W WO 2020037662 A1 WO2020037662 A1 WO 2020037662A1
Authority
WO
WIPO (PCT)
Prior art keywords
dipole
parasitic
antenna array
driving
dipoles
Prior art date
Application number
PCT/CN2018/102291
Other languages
English (en)
Chinese (zh)
Inventor
何春龙
田楚
李兴泉
牛兵建
Original Assignee
深圳大学
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 深圳大学 filed Critical 深圳大学
Priority to PCT/CN2018/102291 priority Critical patent/WO2020037662A1/fr
Publication of WO2020037662A1 publication Critical patent/WO2020037662A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • 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
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole

Definitions

  • the present invention relates to the field of communication technologies, and in particular, to a dipole antenna array.
  • the wireless communication system requires the antenna to have a certain anti-interference ability.
  • the dipole antenna is widely used because of its simple structure, low cost, and high efficiency.
  • this type of dipole antenna inevitably changes the far-field radiation characteristics of the antenna, making it difficult to achieve steep
  • the filter frequency response has the technical problem of narrow impedance bandwidth.
  • the main purpose of the embodiments of the present invention is to provide a dipole antenna array, which can solve the technical problem that the dipole antenna in the prior art is difficult to achieve a steep filter frequency response and has a narrow impedance bandwidth.
  • an embodiment of the present invention provides a dipole antenna array.
  • the dipole antenna array includes a driving dipole and at least two parasitic dipoles, and the driving dipole and each of the parasitic dipoles.
  • the poles are arranged on the same substrate;
  • the parasitic dipole is disposed on both sides of the driving dipole or on the same side of the driving dipole;
  • the length of each of the parasitic dipoles is the same, and the length extending direction of the driving dipole is parallel to the length extending direction of each of the parasitic dipoles.
  • the driving dipole and each of the parasitic dipoles use a stepped impedance line or a uniform impedance line.
  • the length of the driving dipole is the same as the length of each of the parasitic dipoles.
  • the driving dipole and each of the parasitic dipoles are printed side by side on the substrate.
  • two ends of the driving dipole and two ends of each of the parasitic dipoles are aligned with each other.
  • both ends of the driving dipole are staggered from both ends of each of the parasitic dipoles, and the staggering distance is less than a preset staggering threshold.
  • the dipole antenna array provided in the embodiment of the present invention includes a driving dipole and at least two parasitic dipoles disposed on the same substrate; wherein the parasitic dipoles are disposed on both sides of the driving dipole, or The parasitic dipoles are disposed on the same side, and the lengths of the parasitic dipoles are the same, and the length extension direction of the driving dipoles is parallel to the length extension direction of the parasitic dipoles.
  • a steep filtering frequency response can be achieved and the impedance bandwidth is wider. .
  • FIG. 1 is a schematic structural diagram of a dipole antenna array according to an embodiment of the present invention.
  • FIG. 2a and FIG. 2b are schematic diagrams illustrating a detailed structure of a dipole antenna array according to an embodiment of the present invention
  • FIG. 3 is a side view of the dipole antenna array shown in FIG. 2b according to an embodiment of the present invention.
  • 4a and 4b are schematic diagrams of another detailed structure of a dipole antenna array according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a reflection coefficient simulated and measured by a dipole antenna array according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of measured radiation efficiency and realized peak gain of a dipole antenna array according to an embodiment of the present invention.
  • FIG. 1 is a schematic structural diagram of a dipole antenna array according to an embodiment of the present invention.
  • the dipole antenna array 100 includes a driving dipole 110 and at least two parasitic dipoles 120.
  • the driving dipole 110 and the parasitic dipole 120 are disposed on the same substrate 130.
  • the driving dipole 110 and the parasitic dipole 120 are printed side by side on the substrate 130, and the relative dielectric constant of the substrate 130 may be 2.65.
  • the foregoing dipole antenna array includes two parasitic dipoles as an example for description.
  • FIG. 2a and FIG. 2b are schematic diagrams of the detailed structure of the dipole antenna array according to the embodiment of the present invention.
  • Pole 122, the first parasitic dipole 121 is disposed on the first side of the driving dipole 110, and the second parasitic dipole 122 is disposed on the second side of the driving dipole 110, as shown in FIG. 2a; or
  • the first parasitic dipole 121 and the second parasitic dipole 122 are both disposed on the same side of the driving dipole 110, as shown in FIG. 2b.
  • the length of the first parasitic dipole 121 and the second parasitic dipole 122 are the same, and the length extension direction of the driving dipole 110 is the same as that of the first and second parasitic dipoles 121 and 122.
  • the directions are parallel.
  • the driving dipole 110, the first parasitic dipole 121, and the second parasitic dipole 122 all use a stepped impedance line or a uniform impedance line.
  • the length of the driving dipole 110 may be the same as the length of the first parasitic dipole 121 and the second parasitic dipole 122.
  • FIG. 3 is a side view of the dipole antenna array shown in FIG. 2b according to an embodiment of the present invention.
  • the distance h between the dipole antenna array and the signal reflection ground is smaller than a quarter wavelength of the dipole antenna array.
  • the above-mentioned dipole antenna array is based on a ladder impedance resonator, and a preferred center frequency is 1.88 GHz.
  • both the first parasitic dipole 121 and the second parasitic dipole 122 are excited by strong radiation coupling, so that electromagnetic energy can be driven from the driving dipole.
  • the pole 110 is coupled into the first parasitic dipole 121 and the second parasitic dipole 122 and then radiated into the air. Since parasitic elements affect the input impedance of the antenna, it can be used to obtain a wide or even wide bandwidth.
  • the two ends of the driving dipole 110 and the two ends of each parasitic dipole 120 are aligned with each other.
  • the two ends of the driving dipole 110 and each parasitic dipole 120 are aligned.
  • the two ends of the antenna are staggered, and the staggered distance L is smaller than a preset staggered threshold.
  • FIG. 4a or FIG. 4b FIG. 4a and FIG.
  • FIG. 5 is a schematic diagram of reflection coefficients simulated and measured by a dipole antenna array according to an embodiment of the present invention.
  • FIG. 5 in addition to the small differences caused by the effect of the coaxial feed cable, good consistency is achieved between the simulation and measurement results, and different skirt choices are achieved between the low-frequency and high-frequency edges Sex. It can be seen that the measured bandwidth ranges from 1.79 to 1.97 GHz. It should be noted that at 1.88GHz, the distance between the dipole antenna array and the signal reflection ground is far less than a quarter wavelength of the dipole antenna array, so the dipole antenna array has a higher ratio than The single dipole has more than three times the impedance bandwidth.
  • FIG. 6 is a schematic diagram of the measured radiation efficiency and the realized peak gain of the dipole antenna array in the embodiment of the present invention.
  • the above-mentioned dipole antenna array has a flat radiation efficiency response of 75% and a flat gain response of 7.0 dBi in the passband.
  • the measurement efficiency at the lower stopband is 8.5% below 1.69 GHz, and the minimum value at 1.64 GHz is 4.46%.
  • the measurement results further show that the above-mentioned dipole antenna array not only maintains high radiation characteristics in the operating frequency band, but also effectively suppresses signal leakage in the out-of-band area.
  • the peak gains achieved reached a minimum of -9.5 at 1.64 GHz dBi to -3.12 at the lower stopband of 1.76 GHz dBi.
  • Attenuation factor of 231 dB / GHz at the upper band edge attenuation of 6.12 at 1.8GHz and 1.76 GHz dBi and 3.12 dBi
  • the lower band is only 14.68 dB / GHz (attenuation at 1.98 GHz and 2.2 6.57 dBi and 3.34 at GHz dBi). Therefore, the above-mentioned dipole antenna array has a flat response in the passband and two dip peak gains in the stopband, achieving a quasi-elliptical frequency response.
  • the above-mentioned dipole antenna array also has the characteristics of simple structure, compact appearance and small volume, which is very suitable for the application of FDD communication system.
  • the foregoing dipole antenna array may further include N (N is an even number greater than 2) parasitic dipoles.
  • N is an even number greater than 2 parasitic dipoles.
  • An embodiment of the present invention provides a dipole antenna array including a driving dipole and a parasitic dipole disposed side by side on the same substrate; wherein the parasitic dipole includes a first parasitic dipole and a second parasitic dipole Pole, the first parasitic dipole and the second parasitic dipole are respectively disposed on both sides of the driving dipole, or the first parasitic dipole and the second parasitic dipole are disposed on the same driving dipole.
  • the first parasitic dipole and the second parasitic dipole have the same length, and the length extension direction of the driving dipole is parallel to the length extension direction of the first parasitic dipole and the second parasitic dipole.

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

L'invention concerne un réseau d'antennes dipôles, comprenant un dipôle d'entraînement et au moins deux dipôles parasites, qui sont disposés sur le même substrat, les dipôles parasites étant disposés sur les deux côtés du dipôle d'entraînement ou sur le même côté du dipôle d'entraînement, les dipôles parasites ont la même longueur, et la direction d'extension de longueur du dipôle d'entraînement est parallèle à la direction d'extension de longueur de chaque dipôle parasite. Dans les modes de réalisation de la présente invention, par comparaison avec l'état de la technique, des dipôles parasites de longueurs égales sont introduits sur les deux côtés ou de chaque côté d'un dipôle d'entraînement. Ainsi, une réponse de fréquence de filtrage raide et une largeur de bande d'impédance plus large peuvent être réalisées.
PCT/CN2018/102291 2018-08-24 2018-08-24 Réseau d'antennes dipôles WO2020037662A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/102291 WO2020037662A1 (fr) 2018-08-24 2018-08-24 Réseau d'antennes dipôles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/102291 WO2020037662A1 (fr) 2018-08-24 2018-08-24 Réseau d'antennes dipôles

Publications (1)

Publication Number Publication Date
WO2020037662A1 true WO2020037662A1 (fr) 2020-02-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/102291 WO2020037662A1 (fr) 2018-08-24 2018-08-24 Réseau d'antennes dipôles

Country Status (1)

Country Link
WO (1) WO2020037662A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1669182A (zh) * 2002-09-10 2005-09-14 弗拉克托斯股份有限公司 耦合多频带天线
US20060082514A1 (en) * 2004-10-18 2006-04-20 Interdigital Technology Corporation Antenna for controlling a beam direction both in azimuth and elevation
CN103840254A (zh) * 2012-11-22 2014-06-04 安德鲁有限责任公司 超宽带双频带蜂窝基站天线
CN103872464A (zh) * 2012-12-07 2014-06-18 安德鲁有限责任公司 用于双频带蜂窝基站天线的超宽带180度混合电路
CN104067527A (zh) * 2012-12-24 2014-09-24 安德鲁有限责任公司 双带散布蜂窝基站天线
CN204857973U (zh) * 2015-07-15 2015-12-09 华南理工大学 一种宽带方向图可重构天线
CN107546473A (zh) * 2017-08-04 2018-01-05 深圳市景程信息科技有限公司 基于石墨烯的方向图可重构的天线
CN107565221A (zh) * 2017-08-04 2018-01-09 深圳市景程信息科技有限公司 基于石墨烯的天线系统
CN109149094A (zh) * 2018-08-24 2019-01-04 深圳大学 偶极子天线阵列

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1669182A (zh) * 2002-09-10 2005-09-14 弗拉克托斯股份有限公司 耦合多频带天线
US20060082514A1 (en) * 2004-10-18 2006-04-20 Interdigital Technology Corporation Antenna for controlling a beam direction both in azimuth and elevation
CN103840254A (zh) * 2012-11-22 2014-06-04 安德鲁有限责任公司 超宽带双频带蜂窝基站天线
CN103872464A (zh) * 2012-12-07 2014-06-18 安德鲁有限责任公司 用于双频带蜂窝基站天线的超宽带180度混合电路
CN104067527A (zh) * 2012-12-24 2014-09-24 安德鲁有限责任公司 双带散布蜂窝基站天线
CN204857973U (zh) * 2015-07-15 2015-12-09 华南理工大学 一种宽带方向图可重构天线
CN107546473A (zh) * 2017-08-04 2018-01-05 深圳市景程信息科技有限公司 基于石墨烯的方向图可重构的天线
CN107565221A (zh) * 2017-08-04 2018-01-09 深圳市景程信息科技有限公司 基于石墨烯的天线系统
CN109149094A (zh) * 2018-08-24 2019-01-04 深圳大学 偶极子天线阵列

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
YU ET AL.: "A Novel Broadband Omni- directional Array Antenna", PROCEEDINGS OF 2015 NATIONAL CONFERENCE ON MICROWAVE AND MILLIMETER WAVES, 30 May 2015 (2015-05-30) *

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