This research paper deals with a directional high gain PCB $1\times 8$ antenna array for 2.4$$ISM band utilizations. To achieve this antenna array, a well-matched equal-split 9$$dB-power splitter is designed and integrated with the suggested antenna array. It exhibits a wide operating range of 506$$MHz (2.022–2.528$$GHz) and splits the feed power to 8 equal-in-phase output quantities. Then eight identical patch elements with good reflection coefficient, high gain and excellent radiation efficiency are connected at the eight-output ports of the 1 × 8-power divider in order to obtain an array antenna consisting of eight radiating elements. A quarter-wave impedance adapter is utilized to obtain a perfect matching of impedance between patches and the power divider. The suggested directional antenna resonates at 2.4$$GHz with good impedance matching via offering reflection coefficient $S_{11}=-24.34$$$dB and voltage standing wave ratio (VSWR) of 1.16. Moreover, it offers good radiation traits like the enhanced gain of 14.76$$dB, an excellent radiating efficiency equals about 98.86% and a directional radiation pattern. Initially, the proposed planar directional antenna array has been designed and simulated utilizing high-frequency structure simulator (HFSS) EM simulation tool, the results are validated with another simulation tool via computer simulation technology (CST) software. This printed antenna array is a potential candidate to operate at around 2.4$$GHz for RFID reader utilizations due to its outstanding impedance and radiation characteristics.

本研究论文涉及定向高增益 PCB$1\times 8$2.4天线阵列$$ISM 频段利用率。为了实现该天线阵列，需要使用匹配良好的等分 9$$dB 功率分配器经过设计并与建议的天线阵列集成。第 506 章$$兆赫兹（2.022–2.528$$GHz）并将馈电功率分成 8 个同相输出量。然后在1×8功分器的8个输出端口连接8个相同的反射系数好、增益高、辐射效率好的贴片单元，得到8个辐射单元组成的阵列天线。利用四分之一波阻抗适配器来获得贴片和功率分配器之间阻抗的完美匹配。建议的定向天线谐振频率为 2.4$$GHz 通过提供反射系数实现良好的阻抗匹配$S_{11}=-24。34$$$dB 和电压驻波比 (VSWR) 为 1.16。此外，它还具有良好的辐射特性，例如 14.76 的增强增益$$dB，出色的辐射效率约为 98.86%，并且辐射方向图具有方向性。最初，利用高频结构模拟器（HFSS）电磁仿真工具对所提出的平面定向天线阵列进行了设计和仿真，并通过计算机仿真技术（CST）软件使用另一种仿真工具对结果进行了验证。该印刷天线阵列是在 2.4 左右运行的潜在候选者$$GHz 由于其出色的阻抗和辐射特性而适用于 RFID 读取器。