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Small UWB antenna with two stop bands by a compact EBG cell loaded with new open meander slots
International Journal of Microwave and Wireless Technologies ( IF 1.4 ) Pub Date : 2021-08-23 , DOI: 10.1017/s1759078721001161
Farzad Alizadeh 1 , Changiz Ghobadi 1 , Javad Nourinia 2
Affiliation  

In this paper, a small ultra-wideband (UWB) antenna with two stop bands by a compact electromagnetic bandgap (EBG) cell loaded with two new open meander slots is presented. With the coupling of the EBG cell to the feedline, the stop bands are formed. The designed EBG cell is a mushroom type that has the advantages of being able to independently control the stop bands, high responsiveness selectivity of stop bands, easy switching, the need for fewer EBG cells, and low impact on the working characteristics of the antenna. To have a better understanding of the proposed EBG mechanism, characteristic mode analysis is used. The size reduction of the suggested antenna is obtained by halving the reference antenna relative to the axis of symmetry. The measurement results for −10 dB adaptation are from 2.73 to 13 GHz with stop bands at 3.51 GHz (12.9%) and 5.34 GHz (14.1%). The radiation behavior of the minimized antenna is similar to that of a reference antenna. Minimized UWB antenna with transmission function and group delay with small variations in the operating frequency range is suitable for small multiple-input and multiple-output (MIMO) and diversity systems.



中文翻译:

带有两个阻带的小型 UWB 天线,由装有新的开放曲折槽的紧凑型 EBG 单元构成

在本文中,提出了一种具有两个阻带的小型超宽带 (UWB) 天线,该天线由一个装有两个新开放曲折槽的紧凑型电磁带隙 (EBG) 单元组成。随着 EBG 单元与馈线的耦合,形成了阻带。所设计的EBG单元为蘑菇型,具有可独立控制阻带、阻带响应选择性高、切换方便、EBG单元数量少、对天线工作特性影响小等优点。为了更好地理解所提出的 EBG 机制,使用了特征模式分析。建议天线的尺寸减小是通过将参考天线相对于对称轴减半来实现的。-10 dB 自适应的测量结果为 2.73 至 13 GHz,阻带为 3.51 GHz (12. 9%) 和 5.34 GHz (14.1%)。最小化天线的辐射行为类似于参考天线的辐射行为。具有传输功能和工作频率范围变化较小的群延迟的最小化 UWB 天线适用于小型多输入多输出 (MIMO) 和分集系统。

更新日期:2021-08-23
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