In this paper, a monopole antenna with Ultra-wideband (UWB) characteristics is presented for applications in 5G and short-distance wireless communications. It consists of a rectangular shaped patch having truncated corners and central notch with an extended stub at top edge. Two layers of slots areengraved in the middle of the patch within which the outer layer contains four L shaped slots and the inner layer contains two face to face vertically placed U-shaped slots. A partial ground is structured with staircase slots to attain ultra-wideband response with sufficient gain and efficiency. The proposed antenna provides 124% of impedance bandwidth (2.8 GHz–12 GHz) implemented on a low-cost FR4 substrate having the electrical dimension of 0.3𝜆 × 0.19𝜆 at the low cutoff frequency. The effect of the inclusion of slots within the patch is clearly observable as it increases gain and efficiency. The proposed antenna exhibits better response with a maximum measured gain of 6.5 dBi and efficiency of 85% within the bandwidth. Near constant time delay around 1 nS and good fidelity factor of 0.8316 represents that this slotted antenna can be used for undistorted reliable signal transfer. This antenna also provides symmetrical radiation patterns with less cross-polarization effects. Therefore, this monopole antenna can be an appropriate candidate for short-range communication applications like 5G, wireless local area networks, transfer data from biomedical sensors and imaging.

中文翻译：

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具有U和L形缝隙贴片的超宽带单极天线，适用于5G和短距离无线通信中的应用

本文提出了一种具有超宽带（UWB）特性的单极天线，用于5G和短距离无线通信中。它由一个矩形的补片组成，该补片具有截短的拐角和中央凹口，顶部边缘有一个延伸的短截线。在贴片的中间刻有两层缝隙，其中外层包含四个L形缝隙，内层包含两个面对面的垂直放置的U形缝隙。部分地面由阶梯槽构成，以足够的增益和效率获得超宽带响应。拟议中的天线提供了在低成本FR4基板上实现的124％的阻抗带宽（2.8 GHz–12 GHz），该基板在低截止频率下的电气尺寸为0.3𝜆×0.19𝜆。在贴片中包含缝隙的效果很明显，因为它可以增加增益和效率。所提出的天线表现出更好的响应，在带宽内的最大测得增益为6.5 dBi，效率为85％。接近1 ns的恒定时间延迟和0.8316的保真度好表示该开缝天线可用于不失真的可靠信号传输。该天线还提供对称的辐射方向图，交叉极化效应更小。因此，这种单极天线可能是5G，无线局域网，从生物医学传感器传输数据和成像的短距离通信应用的合适候选者。5 dBi，带宽内效率达到85％。接近1 ns的恒定时间延迟和0.8316的保真度好表示该开缝天线可用于不失真的可靠信号传输。该天线还提供对称的辐射方向图，交叉极化效应更小。因此，这种单极天线可能是5G，无线局域网，从生物医学传感器传输数据和成像的短距离通信应用的合适候选者。5 dBi，带宽内效率达到85％。接近1 ns的恒定时间延迟和0.8316的保真度好表示该开缝天线可用于不失真的可靠信号传输。该天线还提供对称的辐射方向图，交叉极化效应更小。因此，这种单极天线可能是5G，无线局域网，从生物医学传感器传输数据和成像的短距离通信应用的合适候选者。