This paper shows a technique to enhance the radiation gain and efficiency of metamaterial (MTM) inspired planar antenna using substrate integrated waveguide (SIW) technology for sub‐6 GHz wireless communication systems. The antenna consists of MTM unit‐cells comprising series interdigital‐capacitor and short‐circuited spiral stub. The proposed antenna behaves like a leaky wave antenna. In the transmission mode the input signal propagating along the antenna structure and leaks energy. The performance of the antenna is shown to enhance by embedding a column of metallic vias between the MTM unit‐cells. This technique has no impact on the size of the antenna. The antenna was constructed on a standard FR4 dielectric substate. It had dimensions of 23.2×6.4×0.8 mm³ and had a wide operational frequency range 1.8 GHz from 3.0–4.8 GHz. After applying SIW the average gain and efficiency of the antenna were 5.8 dBi and 78%, respectively, which is an improvement of 2 dBi and 21% across 3–4.8 GHz.

中文翻译：

---

使用低于6 GHz的无线通信系统的基片集成波导技术，提高了超材料激发的宽带微带天线的辐射增益和效率

本文展示了一种技术，该技术使用衬底集成波导（SIW）技术为6 GHz以下的无线通信系统增强了超材料（MTM）激发的平面天线的辐射增益和效率。天线由MTM单元单元组成，该单元单元包括串联叉指电容器和短路螺旋短截线。所提出的天线的行为就像漏波天线。在传输模式下，输入信号沿天线结构传播并泄漏能量。通过在MTM单元之间插入一列金属过孔，可以提高天线的性能。该技术对天线的尺寸没有影响。天线构建在标准FR4电介质子状态上。它的尺寸为23.2 × 6.4 × 0.8 mm ³并且具有3.0-4.8 GHz的1.8 GHz宽工作频率范围。应用SIW后，天线的平均增益和效率分别为5.8 dBi和78％，这在3-4.8 GHz范围内提高了2 dBi和21％。