基于超材料的小型化双频mimo天线

Metamaterial-based small dual-frequency MIMO antennas

Abstract

The invention discloses metamaterial-based small dual-frequency MIMO (multiple input and multiple output) antennas. The antennas are symmetric bilaterally and comprise an FR4 substrate; two rectangular grounding plates, a micro-strip line and a circular monopole antenna are arranged at two sides of the upper surface of the rectangular FR4 substrate; two rectangular grounding plates are symmetrically distributed at two sides of the micro-strip line; the micro-strip line is connected with the circular monopole antenna; a rectangular groove along the direction of the micro-strip line and an arch-shaped groove concentric to the circular monopole antenna are formed on the circular monopole antenna; one end of the rectangular groove is communicated with the arch-shaped groove and the other end is connected with an interdigital capacitor; and a split resonant ring is arranged at the middle of the upper surface of the rectangular FR4 substrate. The metamaterial-based small dual-frequency MIMO antennas have low cost, smaller size, dual-frequency features and wider impedance bandwidth in the frequency bands of WLAN 2.4GHz and 5GHz; and the antennas have the advantages of low coupling, high isolation, low profile, easy conformation and convenience in processing and manufacturing and the like.
本发明公开了一种基于超材料的小型化双频MIMO天线,所述天线左右对称,包括矩形FR4基底,在矩形FR4基底的上表面的两侧均设有两个矩形接地片、微带线和圆形单极子天线;两个矩形接地片对称分布在微带线的两侧,微带线与圆形单极子天线相连,在圆形单极子天线上开有一沿微带线方向的矩形槽和一与圆形单极子天线共心的弓形槽;矩形槽的一端与弓形槽连通,另一端连接一交指电容;在矩形FR4基底的上表面的中间设有一开口谐振环。本发明天线成本低且尺寸相对较小,具有双频特性且在WLAN2.4GHz和5GHz两个频段具有较宽的阻抗带宽;具有低耦合、高隔离、低剖面、易共形,便于加工制作等优点。

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Patent Citations (1)

    Publication numberPublication dateAssigneeTitle
    US-2007164920-A1July 19, 2007Cameo Communications, Inc.Printed antenna and a wireless network device having the antenna

NO-Patent Citations (2)

    Title
    DIMITRA A. KETZAKI 等: "“Metamaterial-Based Design of Planar Compact MIMO Monopoles”", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》
    JIANG ZHU 等: "“A Simple Approach for Reducing Mutual Coupling in Two Closely Spaced Metamaterial-Inspired Monopole Antennas”", 《IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS》

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    CN-104993233-AOctober 21, 2015中国科学院上海高等研究院A high-isolation micro-strip patch MIMO antenna having the characteristic of radiation mode diversity
    CN-106058456-AOctober 26, 2016上海安费诺永亿通讯电子有限公司Compact-type excitation floor orthogonal radiation high-isolation antenna and MIMO communication system therefor
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