【作者】 周凤； 王佳琪； 周永宏； 陈星；

【Author】 ZHOU Feng;WANG Jiaqi;ZHOU Yonghong;CHEN Xing;College of Electronics Information Engineering,China West Normal University;College of Electronics and Information Engineering,Sichuan University;

【机构】 西华师范大学电子信息工程学院； 四川大学电子信息学院；

【摘要】 为满足现代无线通信系统对天线高性能的需求,提出一种菱形超表面天线设计。该设计旨在实现宽频带覆盖,以适应多样化的应用场景。该天线采用菱形辐射贴片作为主要辐射单元,并通过电磁仿真分析电流分布,在电流最强处挖槽,减小能量损耗提高传输速率,在槽下方放置馈电条实现耦合馈电。该天线在电尺寸为0.81λ_L×0.81λ_L×0.06λ_L (λ_L对应天线工作频段低端波长)时,实现61.9%的相对带宽(4.44-8.43GHz),高低频中心的谐振点分别为4.80GHz、7.60 GHz、8.10 GHz,最大增益达10.42 dBi,在带宽内增益大于5.38 dBi。该天线具有低剖面、宽频带等优点,适用于5G、物联网等对宽带天线需求迫切的应用场景。更多还原

【Abstract】 To meet the demanding performance requirements of modern wireless communication systems,a rhombic metasurface antenna design is proposed to achieve wideband coverage for diverse application scenarios.The antenna employs a rhombic radiating patch as the primary radiating element,and electromagnetic simulation analysis is conducted to optimize the current distribution.Slot is etched at the regions of highest current density to minimize energy loss and enhance transmission efficiency,while a feeding strip is positioned beneath the slots to enable coupled feeding.With an electrical size of 0.81λ_L×0.81λ_L×0.06λ_L(λ_L corresponds to the wavelength at the lower operating frequency),the antenna achieves a relative bandwidth of 61.9 %(4.44–8.43 GHz),with resonant peaks at 4.80 GHz,7.60 GHz,and 8.10 GHz.The maximum gain reaches 10.42 dBi,while maintaining a gain above 5.38 dBi across the entire bandwidth.The proposed antenna exhibits a low-profile structure and wideband characteristics,making it well-suited for 5G,IoT,and other applications requiring high-performance broadband antennas.更多还原