ABSTRACT This paper presents a 4 × 4 multiple-input–multiple-output (MIMO) antenna array for ultra-wide band (UWB) applications with 5.5 GHz wireless local area network (WLAN) band rejection characteristics. The single UWB antenna element consists of modified patch antenna with partial ground plane. WLAN band has been rejected by etching a U-shaped slot in the antenna element. The antenna elements have been arranged in a planar geometry where each element is orthogonal to its adjacent element. A fan-shaped parasitic decoupler, that consists of four strip lines connected with a central square-shaped conductor, is placed among the antenna elements. The dimensions of the antenna array are 67 × 67 × 1.6 mm3. Full wave simulations and experiments have been conducted where measured peak gain and average isolation were 8.1 and −20 dB, respectively. The calculated envelop correction coefficient was less than 0.01.

中文翻译：

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一种使用寄生解耦器的具有带陷特性的新型 UWB MIMO 天线阵列

摘要 本文介绍了一种 4 × 4 多输入多输出 (MIMO) 天线阵列，用于具有 5.5 GHz 无线局域网 (WLAN) 带阻特性的超宽带 (UWB) 应用。单个 UWB 天线元件由带有部分接地平面的改良贴片天线组成。通过在天线元件中蚀刻 U 形槽，WLAN 频段已被拒绝。天线元件以平面几何形状排列，其中每个元件与其相邻元件正交。一个扇形寄生去耦器，由四个带状线组成，与一个中央方形导体相连，被放置在天线元件之间。天线阵列的尺寸为 67 × 67 × 1.6 mm3。已经进行了全波模拟和实验，其中测得的峰值增益和平均隔离度分别为 8.1 和 -20 dB。