A compact substrate integrated waveguide (SIW) horn antenna is proposed with improvements in antenna gain and back lobe level. By pixelating the metal part of the antenna aperture and considering the presence or absence of metal in each pixel using Genetic Algorithm (GA), the electromagnetic field distribution could be controlled especially in the front panel of the antenna. As a result, an increase of 4 dBi occurs in gain and back lobe level is 10.8 dB better than the conventional SIW horn antenna. The proposed antenna works at the frequency of 30.2 GHz and without adding any parts to conventional SIW Horn antenna we do not leave the antenna in compact mode. In order to verify the simulation results, two commercial software has been used and the results are good both in CST and HFSS.

中文翻译：

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使用遗传算法在紧凑的SIW喇叭天线孔径处进行场匹配

提出了一种紧凑的基板集成波导（SIW）喇叭天线，其天线增益和后瓣电平得到了改善。通过对天线孔径的金属部分进行像素化处理，并考虑使用遗传算法（GA），每个像素中是否存在金属，可以尤其在天线的前面板中控制电磁场分布。结果，增益增加了4 dBi，后瓣电平比传统的SIW喇叭天线好10.8 dB。拟议中的天线工作在30.2 GHz的频率上，并且在不向常规SIW喇叭天线中添加任何部件的情况下，我们不会将天线置于紧凑模式。为了验证仿真结果，使用了两个商业软件，在CST和HFSS中都取得了良好的效果。