The Rhombus Shaped Fractal Antenna with stub loaded defected ground plane is presented for UWB wireless applications. Proposed antenna bears the overall compact size of 30 × 24 × 1.6 mm³. The proposed geometry of antenna generates the higher impedance bandwidth in comparison to the other structures such as antenna with partial ground plane and ground plane with defects. The modification in the ground plane has been investigated and analyzed to obtain the optimized results of the designed antenna. Finally, the stub is employed in the geometry of antenna with defected ground plane and the bandwidth of antenna has been enhanced as 17.53 GHz (167.19%) in the 1.72 to 19.25 GHz frequency range. The peak realized gain of antenna is calculated and found as 6.48 dB (maximum gain) at 2.4 GHz frequency band. Far – field radiation patterns of proposed antenna are measured and presented at points 2.4, 7.8, 13.4 and 18.5 GHz. The performance of designed antenna has been analyzed by using HFSS V13 simulator based on finite element method (FEM) and then the optimized final structure is fabricated for the experimental results. The wider bandwidth of proposed antenna made it a suitable candidate for different wireless standards in the desired frequency range.

提出了带有存根负载缺陷接地层的菱形分形天线，用于UWB无线应用。拟议的天线具有30×24×1.6 mm的整体紧凑尺寸³。与其他结构（例如具有部分接地面的天线和具有缺陷的接地面的天线）相比，拟议的天线几何形状可产生更高的阻抗带宽。已经对接地平面的修改进行了研究和分析，以获得设计天线的优化结果。最后，将短截线用于具有接地平面缺陷的天线的几何形状中，并且在1.72至19.25 GHz频率范围内，天线的带宽已提高到17.53 GHz（167.19％）。计算天线的峰值实现增益，发现在2.4 GHz频段为6.48 dB（最大增益）。在建议的天线的2.4、7.8、13.4和18.5 GHz处测量并给出了远场辐射方向图。通过基于有限元方法（FEM）的HFSS V13仿真器对设计天线的性能进行了分析，然后为实验结果制作了优化的最终结构。拟议天线的更宽带宽使其成为所需频率范围内不同无线标准的合适候选者。