Scholarlink

<p>The current communication presents an original compact microstrip line feed four-element MIMO (multiple input multiple output) antenna for 5G sub-6&#xa0;GHz N79 bands with a defined size of 39.5&#xa0;mm × 39.5&#xa0;mm ×1.6&#xa0;mm. The described antenna is constructed on a defective FR4 substrate with a relative permittivity of 4.4, a thickness of 1.6&#xa0;mm, and loss tangent values of 0.02. The proposed MIMO design consists of a defective ground layer with 12-sided polygon-shaped ground stubs on the bottom layer of the substrate and four circular slotted triangle-shaped antenna components on top. Each triangle-shaped antenna element has a circular slit to improve impedance matching. Underneath each antenna element is a rectangular ground patch with a 12-sided ground stub that forms the antenna’s ground plane. The orthogonal structure of the MIMO antenna elements and the defective substrate has increased the isolation between neighboring elements and improved the gain. The theory of characteristic mode (TCM) analysis is used to validate the performance of the proposed MIMO antenna. The proposed quad-port MIMO antenna is built and tested to verify MIMO diversity features, design, and radiation, scattering, and radiation performance. The designed antenna has an operating frequency of 4.75&#xa0;GHz between 4.15 and 5.25&#xa0;GHz, with more than 15dB isolation, and supports the 5G sub-6&#xa0;GHz N79 band. Additionally, the design offers omni-direction patterns, high gain (6dBi) and efficiency (95%), low envelope correlation coefficient (&lt; 0.00005) and acceptable diversity gain (10dB), good total active reflection coefficient (&lt;-10dB), and significant mean effective gain (-3dB) and MEG ratio. The antenna is a promising contender for 5G sub-6&#xa0;GHz N79 band operations since the simulated and observed findings correspond so well.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Four-Element MIMO Diversity Antenna for 5G Sub-6 GHz N79 Band Applications and Verified with TCM Analysis

  • 期刊论文

  • 发表日期：

    2025年2月1日

查看全文
  • Tathababu Addepalli,
  • Sivasubramanyam Medasani,
  • Ch Jyotsna Rani,
  • Chandrasekhar Rao Jetti,
  • Bandi Kiran Kumar,
  • Ch Manohar Kumar,
  • Rajyalakshmi Uppada,
  • Prasanthi Badugu

摘要

The current communication presents an original compact microstrip line feed four-element MIMO (multiple input multiple output) antenna for 5G sub-6 GHz N79 bands with a defined size of 39.5 mm × 39.5 mm ×1.6 mm. The described antenna is constructed on a defective FR4 substrate with a relative permittivity of 4.4, a thickness of 1.6 mm, and loss tangent values of 0.02. The proposed MIMO design consists of a defective ground layer with 12-sided polygon-shaped ground stubs on the bottom layer of the substrate and four circular slotted triangle-shaped antenna components on top. Each triangle-shaped antenna element has a circular slit to improve impedance matching. Underneath each antenna element is a rectangular ground patch with a 12-sided ground stub that forms the antenna’s ground plane. The orthogonal structure of the MIMO antenna elements and the defective substrate has increased the isolation between neighboring elements and improved the gain. The theory of characteristic mode (TCM) analysis is used to validate the performance of the proposed MIMO antenna. The proposed quad-port MIMO antenna is built and tested to verify MIMO diversity features, design, and radiation, scattering, and radiation performance. The designed antenna has an operating frequency of 4.75 GHz between 4.15 and 5.25 GHz, with more than 15dB isolation, and supports the 5G sub-6 GHz N79 band. Additionally, the design offers omni-direction patterns, high gain (6dBi) and efficiency (95%), low envelope correlation coefficient (< 0.00005) and acceptable diversity gain (10dB), good total active reflection coefficient (<-10dB), and significant mean effective gain (-3dB) and MEG ratio. The antenna is a promising contender for 5G sub-6 GHz N79 band operations since the simulated and observed findings correspond so well.