WO2020140537A1 - Mimo天线系统及电子设备 - Google Patents

Mimo天线系统及电子设备 Download PDF

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Publication number
WO2020140537A1
WO2020140537A1 PCT/CN2019/110647 CN2019110647W WO2020140537A1 WO 2020140537 A1 WO2020140537 A1 WO 2020140537A1 CN 2019110647 W CN2019110647 W CN 2019110647W WO 2020140537 A1 WO2020140537 A1 WO 2020140537A1
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feeding
network
polarized
feed
antenna unit
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English (en)
French (fr)
Inventor
刘毛
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AAC Technologies Holdings Shenzhen Co Ltd
AAC Technologies Pte Ltd
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AAC Acoustic Technologies Shenzhen Co Ltd
AAC Technologies Pte Ltd
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Publication of WO2020140537A1 publication Critical patent/WO2020140537A1/zh
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/0006—Particular feeding 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
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/10—Polarisation diversity; Directional diversity

Definitions

  • the utility model relates to the technical field of communication, in particular to a MIMO antenna system.
  • Massive MIMO as the key technology of 5G communication, has received extensive attention from researchers at home and abroad. Massive MIMO uses dozens or even hundreds of antennas at the base station to fully utilize the spatial freedom and improve the spectrum efficiency and data transmission rate of the communication system.
  • massive MIMO can use a large number of antennas to increase system capacity, the corresponding hardware cost and signal processing complexity also increase with the increase of antennas. Therefore, it is very important to find an effective method that not only reduces costs but also takes advantage of the advantages of massive MIMO systems.
  • the purpose of the utility model is to provide a MIMO antenna system, which can solve the technical problems of the existing MIMO antenna system with a complicated structure and high production cost.
  • a MIMO antenna system includes an antenna unit and a feed network that differentially feeds the antenna unit, and the feed network includes +45° polarized feed of the antenna unit
  • a first feeding network for electricity and a second feeding network for -45° polarized feeding of the antenna unit, the first feeding network and the second feeding network are arranged orthogonally,
  • the first feed network includes a first polarized feed port connected to an external circuit
  • the second feed network includes a second polarized feed port connected to an external circuit
  • the feed network passes through the first The polarization feed port and the second polarization feed port perform ⁇ 45° polarization feed to the antenna unit.
  • the feeding network includes a T-shaped power splitter and a phase shifter.
  • the MIMO antenna system further includes a base plate for setting the feed network, and the antenna unit is fixed on the base plate.
  • the antenna unit includes a flat radiator arranged parallel to the substrate plate and a first support portion and a second support portion which support the radiator on the substrate plate and are arranged crosswise .
  • the first feeding network further includes a first feeding point and a second feeding point that are electrically connected to the first support part, the first feeding point, the first polarization feed The electrical port and the second feeding point are sequentially arranged; the second feeding network further includes a third feeding point and a fourth feeding point electrically connected to the second support part, respectively, and the third feeding point The electric point, the second polarized feed port and the fourth feed point are arranged in sequence, the first feed point and the second feed point and the third feed point and the first The four feeding points are arranged crosswise.
  • the size of the radiator is 48 mm ⁇ 48 mm, and the height of the radiator relative to the substrate plate is 15 mm.
  • the present invention has the following beneficial effects: low thickness, simple structure, and low production cost, and provides certain technical support for the standardization and practicalization of massive MIMO in 5G systems.
  • Figure 1 is a schematic diagram of the structure of the utility model MIMO antenna system
  • FIG. 2 is a schematic diagram of the feeding network structure of the MIMO antenna system of the utility model
  • FIG. 3 is a frequency-S parameter curve diagram of the MIMO antenna system of the utility model
  • FIG. 5 is a frequency-S parameter curve diagram of a first feeding point and a first polarized feed port and a second feeding point and a first polarized feed port in the first feeding network of the present invention
  • FIG. 6 is a frequency-S parameter curve diagram of the third feed point and the second polarized feed port and the fourth feed point and the second polarized feed port in the second feed network of the present invention
  • FIG. 10 is a second simulation diagram of the MIMO antenna system of the present invention.
  • the present invention provides a MIMO antenna system 100 including a feeding network 10, an antenna unit 11 and a substrate board 12.
  • the feeding network 10 performs differential feeding on the antenna unit 11 Electricity, the feeding network 10 is realized by a T-shaped power splitter and a phase shifter.
  • the feed network 10 includes a first feed network 101 that feeds the antenna unit with a +45° polarization and a second feed network 102 that feeds the antenna unit 11 with a -45° polarization.
  • the first feeding network 101 and the second feeding network 102 are arranged orthogonally.
  • the first feed network 101 includes a first polarized feed port 1, a first feed point 2 and a second feed point 3, the first feed point 2, the first polarized feed port 1 and the second feed point 3 are set in sequence;
  • the second feed network 102 includes a second polarized feed port 4, a third feed point 5 and a fourth feed point 6, the third feed
  • the electrical point 5, the second polarized feed port 4 and the fourth feed point 6 are provided in this order, the first feed point 2 and the second feed point 3 and the third feed Point 5 and the fourth feeding point 6 are arranged crosswise.
  • the first polarized feed port 1 and the second polarized feed port 4 are both connected to an external circuit, and the feed network 10 passes through the first polarized feed port 1 and the second pole
  • the polarization feeding port 4 performs ⁇ 45° polarization feeding to the antenna unit 11.
  • the base plate 12 is in the shape of a plate, and the feeding network 10 and the antenna unit 11 are fixed on the base plate 12.
  • the antenna unit 11 includes a plate-shaped radiator 110 spaced parallel to the base plate 12 and a first support portion 111 and a first support portion 111 that support the radiator 110 on the base plate 12 and are arranged crosswise.
  • the radiator 110 is electrically connected to the first feeding point 2 and the second feeding point 3 through the first supporting part 111, and is connected to the second supporting part 112 through the second supporting part 112
  • the third feeding point 5 and the fourth feeding point 6 are electrically connected.
  • the size of the radiator 110 is 48 mm ⁇ 48 mm, and the height of the radiator 110 relative to the base plate 12 is 15 mm.
  • the frequency-S parameters of the MIMO antenna system of the present invention are shown in FIG. 3; the frequency-S parameters of the first and second polarized feed ports in the feed network of the present invention As shown in FIG. 4; the frequency-S parameters of the first feed point and the first polarized feed port and the second feed point and the first polarized feed port in the first feed network of the present invention are shown in FIG. 5 The frequency-S parameters of the third feed point and the second polarized feed port and the fourth feed point and the second polarized feed port in the second feed network of the present invention are shown in FIG. 6; The frequency-S parameters of the first polarized feed port and the second polarized feed port of the MIMO antenna system of the present invention are shown in FIG.
  • FIG. 7 The frequency-S parameter of the polarization feed port and the first polarization feed port to the second polarization feed port is shown in FIG. 8; the simulation diagrams of the MIMO antenna system of the present invention are shown in FIGS. 9 and 10.
  • the present invention has the following beneficial effects: low thickness, simple structure, and low production cost, and provides certain technical support for the standardization and practicalization of massive MIMO in 5G systems.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Aerials (AREA)

Abstract

本实用新型提供了一种MIMO天线系统，包括天线单元和对所述天线单元进行差分馈电的馈电网络，所述馈电网络包括对所述天线单元进行+45°极化馈电的第一馈电网络和对所述天线单元进行-45°极化馈电的第二馈电网络，所述第一馈电网络与所述第二馈电网络呈正交设置，所述第一馈电网络包括与外界电路连接的第一极化馈电口，所述第二馈电网络包括与外界电路连接的第二极化馈电口，所述馈电网络通过所述第一极化馈电口和所述第二极化馈电口对所述天线单元进行±45°极化馈电。与相关技术相比，本实用新型具有如下有益效果：厚度低，结构简单，生产成本低，为大规模MIMO在5G系统的标准化和实用化提供一定的技术支撑。

Description

MIMO天线系统及电子设备 技术领域
本实用新型涉及通讯技术领域，尤其涉及一种MIMO天线系统。
 背景技术
大规模MIMO作为5G通信的关键技术，受到了国内外学者的广泛关注。大规模MIMO 通过在基站配置几十甚至几百根天线，充分利用了空间自由度，提高了通信系统的频谱效率和数据传输速率。
 技术问题
但是，随着全球气候变暖造成的环境问题不断加剧，人们对绿色通信的呼声也越发高涨。虽然大规模MIMO可以利用大量天线提高系统容量，但是相应的硬件成本和信号处理复杂度也随天线的增加而增加。因此，找到一个不仅降低成本而且能发挥大规模MIMO系统优点的有效方法至关重要。
 技术解决方案
本实用新型的目的在于提供一种MIMO天线系统，其可以解决现有MIMO天线系统结构复杂，生产成本高的技术问题。
本实用新型的技术方案如下：一种MIMO天线系统，包括天线单元和对所述天线单元进行差分馈电的馈电网络，所述馈电网络包括对所述天线单元进行+45°极化馈电的第一馈电网络和对所述天线单元进行-45°极化馈电的第二馈电网络，所述第一馈电网络与所述第二馈电网络呈正交设置，所述第一馈电网络包括与外界电路连接的第一极化馈电口，所述第二馈电网络包括与外界电路连接的第二极化馈电口，所述馈电网络通过所述第一极化馈电口和所述第二极化馈电口对所述天线单元进行±45°极化馈电。
优选的，所述馈电网络包括T型功分器和移相器。
优选的，所述MIMO天线系统还包括用于设置所述馈电网络的基材板，所述天线单元固设于所述基材板。
优选的，所述天线单元包括与所述基材板平行间隔设置的平板状辐射体和将所述辐射体支撑于所述基材板上并呈交叉设置的第一支撑部和第二支撑部。
优选的，所述第一馈电网络还包括分别与所述第一支撑部电连接的第一馈电点和第二馈电点，所述第一馈电点、所述第一极化馈电口以及所述第二馈电点依次设置；所述第二馈电网络还包括分别与所述第二支撑部电连接的第三馈电点和第四馈电点，所述第三馈电点、所述第二极化馈电口以及所述第四馈电点依次设置，所述第一馈电点和所述第二馈电点与所述第三馈电点和所述第四馈电点呈交叉设置。
优选的，辐射体的尺寸为48mm×48mm，所述辐射体相对于所述基材板的高度为15mm。
 有益效果
与相关技术相比，本实用新型具有如下有益效果：厚度低，结构简单，生产成本低，为大规模MIMO在5G系统的标准化和实用化提供一定的技术支撑。
 附图说明
为了更清楚地说明本实用新型实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1为本实用新型MIMO天线系统的结构示意图；
图2为本实用新型MIMO天线系统的馈电网络结构示意图；
图3为本实用新型MIMO天线系统的频率-S参数曲线图；
图4为本实用新型馈电网络中第一极化馈电口和第二极化馈电口的频率-S参数曲线图；
图5为本实用新型第一馈电网络中第一馈电点与第一极化馈电口以及第二馈电点与第一极化馈电口的频率-S参数曲线图；
图6为本实用新型第二馈电网络中第三馈电点与第二极化馈电口以及第四馈电点与第二极化馈电口的频率-S参数曲线图；
图7为本实用新型MIMO天线系统的第一极化馈电口和第二极化馈电口的频率-S参数曲线图；
图8为本实用新型MIMO天线系统的第二极化馈电口到第一极化馈电口以及第一极化馈电口到第二极化馈电口的频率-S参数曲线图；
图9为本实用新型MIMO天线系统的第一仿真图；
图10为本实用新型MIMO天线系统的第二仿真图。
 本发明的实施方式
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本实用新型保护的范围。
请参阅图1和图2，本实用新型提供了一种MIMO天线系统100，包括馈电网络10、天线单元11以及基材板12，所述馈电网络10对所述天线单元11进行差分馈电，所述馈电网络10由T型功分器和移相器实现。
所述馈电网络10包括对所述天线单元进行+45°极化馈电的第一馈电网络101和对所述天线单元11进行-45°极化馈电的第二馈电网络102，所述第一馈电网络101与所述第二馈电网络102呈正交设置。所述第一馈电网络101包括第一极化馈电口1、第一馈电点2以及第二馈电点3，所述第一馈电点2、所述第一极化馈电口1以及所述第二馈电点3依次设置；所述第二馈电网络102包括第二极化馈电口4、第三馈电点5以及第四馈电点6，所述第三馈电点5、所述第二极化馈电口4以及所述第四馈电点6依次设置，所述第一馈电点2和所述第二馈电点3与所述第三馈电点5和所述第四馈电点6呈交叉设置。
所述第一极化馈电口1和所述第二极化馈电口4均与外界电路连接，所述馈电网络10通过所述第一极化馈电口1和所述第二极化馈电口4对所述天线单元11进行±45°极化馈电。
所述基材板12呈板片状，所述馈电网络10和所述天线单元11均固设于所述基材板12。
所述天线单元11包括与所述基材板12平行间隔设置的平板状辐射体110和将所述辐射体110支撑于所述基材板12上并呈交叉设置的第一支撑部111和第二支撑部112，所述辐射体110通过所述第一支撑部111与所述第一馈电点2和所述第二馈电点3电连接，通过所述第二支撑部112与所述第三馈电点5和所述第四馈电点6电连接。
在本实用新型的具体实施方式中，所述辐射体110的尺寸为48mm×48mm，所述辐射体110相对于所述基材板12的高度为15mm。
经过实验检测以及仿真，本实用新型MIMO天线系统的频率-S参数如图3所示；本实用新型馈电网络中第一极化馈电口和第二极化馈电口的频率-S参数如图4所示；本实用新型第一馈电网络中第一馈电点与第一极化馈电口以及第二馈电点与第一极化馈电口的频率-S参数如图5所示；本实用新型第二馈电网络中第三馈电点与第二极化馈电口以及第四馈电点与第二极化馈电口的频率-S参数如图6所示；本实用新型MIMO天线系统的第一极化馈电口和第二极化馈电口的频率-S参数如图7所示；本实用新型MIMO天线系统的第二极化馈电口到第一极化馈电口以及第一极化馈电口到第二极化馈电口的频率-S参数如图8所示；本实用新型MIMO天线系统的仿真图如图9和10所示。
与相关技术相比，本实用新型具有如下有益效果：厚度低，结构简单，生产成本低，为大规模MIMO在5G系统的标准化和实用化提供一定的技术支撑。
以上所述的仅是本实用新型的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，还可以做出改进，但这些均属于本实用新型的保护范围。

Claims (6)

  1. 一种MIMO天线系统，其特征在于，包括天线单元和对所述天线单元进行差分馈电的馈电网络，所述馈电网络包括对所述天线单元进行+45°极化馈电的第一馈电网络和对所述天线单元进行-45°极化馈电的第二馈电网络，所述第一馈电网络与所述第二馈电网络呈正交设置，所述第一馈电网络包括与外界电路连接的第一极化馈电口，所述第二馈电网络包括与外界电路连接的第二极化馈电口，所述馈电网络通过所述第一极化馈电口和所述第二极化馈电口对所述天线单元进行±45°极化馈电。
  2. 根据权利要求1所述的MIMO天线系统，其特征在于，所述馈电网络包括T型功分器和移相器。
  3. 根据权利要求1或2所述的MIMO天线系统，其特征在于，所述MIMO天线系统还包括用于设置所述馈电网络的基材板，所述天线单元固设于所述基材板。
  4. 根据权利要求3所述的MIMO天线系统，其特征在于，所述天线单元包括与所述基材板平行间隔设置的平板状辐射体和将所述辐射体支撑于所述基材板上并呈交叉设置的第一支撑部和第二支撑部。
  5. 根据权利要求4所述的MIMO天线系统，其特征在于，所述第一馈电网络还包括分别与所述第一支撑部电连接的第一馈电点和第二馈电点，所述第一馈电点、所述第一极化馈电口以及所述第二馈电点依次设置；所述第二馈电网络还包括分别与所述第二支撑部电连接的第三馈电点和第四馈电点，所述第三馈电点、所述第二极化馈电口以及所述第四馈电点依次设置，所述第一馈电点和所述第二馈电点与所述第三馈电点和所述第四馈电点呈交叉设置。
  6. 根据权利要求4所述的MIMO天线系统，其特征在于，辐射体的尺寸为48mm×48mm，所述辐射体相对于所述基材板的高度为15mm。
PCT/CN2019/110647 2018-12-30 2019-10-11 Mimo天线系统及电子设备 Ceased WO2020140537A1 (zh)

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CN109149093A (zh) * 2018-08-03 2019-01-04 瑞声科技(新加坡)有限公司 大规模mimo阵列天线
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