Miniaturized MIMO Antenna Design Based on Mode Cancellation Method for 5G Mobile Terminals

IF 4.8 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-07-10 DOI:10.1109/LAWP.2025.3587350

Yifan Lu;Changjiang Deng;Yiming Fan;Rongrong Dong

引用次数: 0

Abstract

In this letter, a miniature multiple-input–multiple-output (MIMO) antenna pair operating at the 3.5 GHz band is proposed for 5G mobile terminals. The design consists of dual inverted-F antennas (IFAs) arranged in an asymmetric mirrored configuration with respect to the chassis ground plane, occupying a compact size of 12 mm × 5 mm. By adding an inductor at the center of the 1-mm-wide gap between the two closely spaced IFAs, the mutual coupling is greatly reduced. The decoupling mechanism is explained from the perspective of common mode and differential mode cancellation. A prototype of the proposed antenna pair is fabricated. The measured −6 dB overlapping bandwidth of the two ports covers the 3.4 GHz to 3.6 GHz band, with port isolation higher than 22.4 dB.

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基于模式对消方法的5G移动终端小型化MIMO天线设计

在这封信中，提出了一种用于5G移动终端的3.5 GHz频段的微型多输入多输出（MIMO）天线对。该设计由双倒f天线（ifa）组成，相对于机箱地平面以不对称的镜像配置排列，占用12mm × 5mm的紧凑尺寸。通过在两个紧密间隔的ifa之间的1mm宽的间隙中心添加一个电感器，可以大大减少相互耦合。从共模和差模对消的角度解释了解耦机理。制作了该天线对的原型。测量到的−6db重叠带宽覆盖3.4 GHz ~ 3.6 GHz频段，端口隔离度高于22.4 dB。

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

IEEE Antennas and Wireless Propagation Letters 工程技术-电信学

CiteScore

8.00

自引率

9.50%

发文量

529

审稿时长

1.0 months

期刊介绍： IEEE Antennas and Wireless Propagation Letters (AWP Letters) is devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation. These are areas of competence for the IEEE Antennas and Propagation Society (AP-S). AWPL aims to be one of the "fastest" journals among IEEE publications. This means that for papers that are eventually accepted, it is intended that an author may expect his or her paper to appear in IEEE Xplore, on average, around two months after submission.