Dual-layer microstrip monopolar patch antenna with characteristic mode analysis

IF 0.8 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Frequenz Pub Date : 2023-04-03 DOI:10.1515/freq-2022-0230

Shu Jiang, Hengfei Xu, Jiangling Dou, Dongquan Sun

引用次数: 0

Abstract

Abstract A monopole-like stacked microstrip antenna with dual-layer patches is proposed for ultra-wideband applications. The characteristic mode analysis (CMA) is utilized and contributes to the multi-mode behavior investigation, guiding the design process. The dual-layer patches both consist of two concentric-coupled rings. The patch configuration is optimized according to the desired mode behaviors at different frequencies. Correspondingly, the three merged resonant modes, containing the modes TM01 and TM02 of the middle layer and TM01 in the top layer, effectively broaden the operation band. The measurements demonstrate that the impedance bandwidth (IBW) of the antenna reaches 4.70–10.20 GHz (73.8%) with the return loss of 10 dB and a maximum gain of 8.7 dBi. The cross-polarization level is better than −28 dB. The proposed antenna possesses a small radius of 30 mm (0.47 λ L ${\lambda }_{L}$ ), and a low-profile of 5.78 mm (0.09 λ L ${\lambda }_{L}$ ). λ L ${\lambda }_{L}$ is the free-space wavelength at the lowest operation frequency.

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带特征模分析的双层微带单极贴片天线

摘要提出了一种适用于超宽带应用的具有双层贴片的类单极堆叠微带天线。特征模式分析（CMA）被利用，并有助于多模式行为研究，指导设计过程。双层补片均由两个同心耦合环组成。根据不同频率下的期望模式行为来优化贴片配置。相应地，三种合并的谐振模式，包括中间层的模式TM01和TM02以及顶层的TM01，有效地拓宽了工作频带。测量结果表明，天线的阻抗带宽（IBW）达到4.70–10.20 GHz（73.8%），回波损耗为10 dB，最大增益为8.7 dBi。交叉极化电平优于−28 dB。所提出的天线具有30毫米的小半径（0.47λL$｛\lambda｝_｛L｝$）和5.78毫米的低轮廓（0.09λL$｝_。λL$｛\lambda｝_｛L｝$是最低工作频率下的自由空间波长。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Frequenz 工程技术-工程：电子与电气

CiteScore

2.40

自引率

18.20%

发文量

审稿时长

3 months

期刊介绍： Frequenz is one of the leading scientific and technological journals covering all aspects of RF-, Microwave-, and THz-Engineering. It is a peer-reviewed, bi-monthly published journal. Frequenz was first published in 1947 with a circulation of 7000 copies, focusing on telecommunications. Today, the major objective of Frequenz is to highlight current research activities and development efforts in RF-, Microwave-, and THz-Engineering throughout a wide frequency spectrum ranging from radio via microwave up to THz frequencies. RF-, Microwave-, and THz-Engineering is a very active area of Research & Development as well as of Applications in a wide variety of fields. It has been the key to enabling technologies responsible for phenomenal growth of satellite broadcasting, wireless communications, satellite and terrestrial mobile communications and navigation, high-speed THz communication systems. It will open up new technologies in communications, radar, remote sensing and imaging, in identification and localization as well as in sensors, e.g. for wireless industrial process and environmental monitoring as well as for biomedical sensing.