In the present article, a fork-shaped UWB-MIMO antenna is designed and experimentally tested to achieve hexa-band rejection characteristics. Initially, the proposed array consists of two fork-shaped radiators and a reduced ground with a vertical stub, designed to cover a large bandwidth from 3.64–12.2 GHz and high port-to-port isolation. Furthermore, each fork-shaped radiator is defected with two U-shaped slots, inverted U-shaped slot, complementary SRR and a pair of Z-shaped slots to eliminate the interfering frequency bands at 3.95 GHz (downlink C-band), 4.8 GHz (INSAT), 5.35 GHz (WLAN), 6.19 GHz (uplink C-band) and 8.4 GHz (ITU-8) respectively. The reduced ground is loaded with two G-shaped slots to suppress the interfering amateur radio band (10.01–11.27 GHz). The total volume occupied by the proposed array is 21.5 × 57 × 1.64 mm3. The diversity performance of the proposed array is characterized by low ECC, high DG, high MEG, low CCL and stable TARC characteristics. A close resemblance is achieved between the simulated and experimental results.

中文翻译：

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装载有互补裂环谐振器和缝隙的叉形 UWB-MIMO 天线的六波段抑制特性

在本文中，设计了叉形 UWB-MIMO 天线并进行了实验测试，以实现六频带抑制特性。最初，提议的阵列由两个叉形辐射器和一个带有垂直短截线的减少接地组成，旨在覆盖 3.64-12.2 GHz 的大带宽和高端口到端口隔离。此外，每个叉形辐射器都有两个U形槽、倒U形槽、互补SRR和一对Z形槽，以消除3.95 GHz（下行C频段）、4.8 GHz的干扰频段(INSAT)、5.35 GHz (WLAN)、6.19 GHz（上行 C 频段）和 8.4 GHz (ITU-8)。减少的地面装有两个 G 形槽，以抑制干扰性业余无线电频段 (10.01–11.27 GHz)。拟议阵列占用的总体积为 21.5 × 57 × 1.64 mm3。所提出阵列的分集性能具有低 ECC、高 DG、高 MEG、低 CCL 和稳定的 TARC 特性。模拟结果和实验结果非常相似。