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首页> 外文期刊>Journal of Electromagnetic Waves and Applications >Design of ultra wideband hexagonal patch slot antenna for high-gain wireless applications
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Design of ultra wideband hexagonal patch slot antenna for high-gain wireless applications

机译：高增益无线应用的超宽带六角形贴片缝隙天线设计

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摘要

In this paper, a CPW-fed modified rectangular slot antenna with ultra wideband characteristics is proposed. The slot has on one of its sides, a rectangular extension of smaller size which introduces asymmetry in the design. The CPW feed is terminated on a hexagonal-shape patch which protrudes into the slot centre and excites the slot. The antenna exhibits an impedance bandwidth of 134% at the centre frequency of 8.8GHz. The radiation patterns of the antenna are simulated and measured and found to have omni-directional characteristics in the H-plane. In order to increase the gain of the antenna and make it directional, a multi-layer FSS is designed and fabricated. By implementing the FSS, the gain is enhanced by 3-4 dBi throughout the band. To verify the time domain performance of the antenna with and without the FSS, the group delay and fidelity factors (FF) are calculated. While the variations in the group delay are seen to be minimal, the FF are found to be within acceptable limits thus indicating good time domain characteristics with no significant loss of information in the received pulse.
机译：本文提出了一种CPW馈电的具有超宽带特性的改进矩形缝隙天线。该狭槽的一侧具有较小尺寸的矩形延伸，这在设计中引入了不对称性。 CPW进料终止于一个六边形的贴片，该贴片伸入插槽中心并激发插槽。该天线在8.8GHz的中心频率下具有134％的阻抗带宽。模拟和测量天线的辐射方向图，发现其在H平面上具有全向特性。为了增加天线的增益并使其定向，设计并制造了多层FSS。通过实施FSS，整个频带的增益提高了3-4 dBi。为了验证具有和不具有FSS的天线的时域性能，计算了群延迟和保真因子（FF）。虽然群时延的变化被认为是最小的，但发现FF在可接受的范围内，因此表明了良好的时域特性，而接收脉冲中没有明显的信息丢失。

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