In this study, we propose a miniature triple band PIFA antenna (planar inverted-F antenna) composed of uniform semi-patches for LTE2600/WLAN/WIMAX/HIPERLAN-2 applications. The binary genetic algorithm determines the shape of the antenna’s radiating plate to achieve multiband operation with good performance. The simulated results reveal that the proposed antenna has attained three bandwidths (\(S_{11} <-\,10\mathrm{dB}\)). The first bandwidth is from 2.5 to 3.07 GHz with resonant frequency at 2.80 GHz. The second bandwidth takes the range from 3.79 to 3.99 GHz with an operating frequency at 3.89 GHz. The third bandwidth is from 5.64 to 5.94 GHz with resonance at 5.78 GHz. All three resonant frequencies demonstrate good impedance matching with high radiation efficiency and gain. The PIFA antenna design is constructed of two FR4 epoxy substrates and has dimensions of \(15 \times 30 \times 3.8\,\mathrm{mm}^3\). The proposed multiband PIFA antenna exhibits good performance with small size, making it suitable for several wireless systems applications.

在这项研究中，我们为LTE2600 / WLAN / WIMAX / HIPERLAN-2应用提出了一种由均匀的半贴片组成的微型三频段PIFA天线（平面倒F天线）。二进制遗传算法确定天线辐射板的形状，以实现具有良好性能的多频带操作。仿真结果表明，所提出的天线已经获得了三个带宽（\（S_ {11} <-\，10 \ mathrm {dB} \））。第一带宽为2.5至3.07 GHz，谐振频率为2.80 GHz。第二带宽的范围为3.79至3.99 GHz，工作频率为3.89 GHz。第三带宽为5.64至5.94 GHz，谐振频率为5.78 GHz。所有这三个谐振频率均显示出良好的阻抗匹配以及较高的辐射效率和增益。PIFA天线设计由两个FR4环氧树脂基板构成，尺寸为\（15 x 30 x 3.8 x ，\ mathrm {mm} ^ 3 \）。所提出的多频带PIFA天线具有小尺寸的良好性能，使其适合几种无线系统应用。