In this study, a wide-band compact patch antenna array is developed for 60 GHz band applications. The antenna array consists of eight identical elements. Each element is a simple microstrip-fed rectangular radiating patch printed on the top side of a Rogers 5880 substrate. A rectangular ground plane is printed on the bottom side. To adjust the impedance matching for broadband operation, a complete circular-shaped slot and a part of circular-shaped slot are etched off the ground plane and the patch, respectively. A technique to feed the array elements unequally is employed for design a more compact antenna structure with improved gain and impedance bandwidth. An electromagnetic band-gap (EBG) reflector below the array structure is employed to decrease backward radiation and improve front-to-back (F/B) radiation ratio. The antenna array with the EBG reflector has a compact size with overall dimensions of 17.5 × 22 × 1.262 mm³. It achieves operation bandwidth from 56.5 to 65.2 GHz (|S₁₁| ≤ − 10 dB), which covers the 60 GHz unlicensed band (57–64 GHz). The gain variation is from 12 to 16 dBi over the entire operating band. These features make the proposed antenna array system a suitable candidate for industrial, scientific and medical (ISM) broadband applications at 60 GHz band.

在这项研究中，为60 GHz频段应用开发了宽带紧凑型贴片天线阵列。天线阵列由八个相同的元素组成。每个元件都是印在Rogers 5880基板顶面上的简单的微带馈送矩形辐射贴片。底部印有一个矩形接地平面。为了调整用于宽带操作的阻抗匹配，分别从接地平面和贴片上蚀刻出一个完整的圆形槽和一部分圆形槽。采用一种不均匀地馈入阵列元件的技术来设计具有提高的增益和阻抗带宽的更紧凑的天线结构。阵列结构下方的电磁带隙（EBG）反射器用于减少反向辐射并提高前后（F / B）辐射比。³。它实现了从56.5至65.2 GHz（| S ₁₁ |≤− 10 dB）的工作带宽，覆盖了60 GHz的非许可频段（57​​–64 GHz）。在整个工作频带上，增益变化在12至16 dBi之间。这些特性使拟议的天线阵列系统成为60 GHz频段工业，科学和医学（ISM）宽带应用的合适候选者。