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首页> 外文期刊>Journal of Electromagnetic Waves and Applications >Compact isolation-enhanced UWB MIMO antenna with band-notch character
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Compact isolation-enhanced UWB MIMO antenna with band-notch character

机译：具有带隙特性的紧凑型增强隔离UWB MIMO天线

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摘要

In this paper, a compact multiple-input multiple-output antenna with band-notched characteristic is presented for Ultra-Wideband (UWB) applications. Two orthogonally placed radiator elements excite the same open slot which consists of two connected T-shaped slots on the ground plane. Such orthogonal structure easily achieves good diversity performance. To enhance isolation of the lower band, a fork-shaped slot is notched on the ground between two radiators, and the mutual coupling reduces to -20 dB below for the entire UWB frequency band. By slitting open-ended quarter-wavelength L slots on the radiator elements, the rejection bands are achieved. The compact size of the antenna is only 30 x 30 mm(2), and the antenna prototype is fabricated and measured. Measured results indicate that a wide-impedance bandwidth, which is from 2.85 to 11.9 GHz with rejection band of 5.1-6 GHz, is achieved, and the envelope correlation coefficient is below 0.008, which are competitive for portable UWB devices.
机译：本文针对超宽带（UWB）应用，提出了一种具有带隙特性的紧凑型多输入多输出天线。两个正交放置的辐射器元件激励相同的开槽，该开槽由接地面上的两个相连的T形槽组成。这种正交结构容易实现良好的分集性能。为了增强较低频段的隔离度，在两个辐射器之间的地面上开了一个叉形槽，在整个UWB频段，相互耦合降低到-20 dB以下。通过在辐射器元件上切开开放式四分之一波长L缝隙，可以实现抑制带。天线的紧凑尺寸仅为30 x 30 mm（2），天线原型得以制造和测量。测量结果表明，可实现2.85至11.9 GHz的宽阻抗带宽，抑制频带为5.1-6 GHz，并且包络相关系数低于0.008，这在便携式UWB设备中具有竞争力。

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