A Novel Compact MIMO Antenna for Enhanced Leadless Implantable Pacemakers

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

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-04-01 Epub Date: 2026-02-17 DOI:10.1109/LAWP.2026.3665847

Mohamed Benaissa;Djelloul Aissaoui;Abdelhalim Chaabane;Hussein Attia;Tayeb A. Denidni

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引用次数: 0

Abstract

This letter presents a new miniaturized multiple-input–multiple-output (MIMO) implantable antenna based on meandered resonators, designed for biomedical applications that require compactness and enhanced data transmission rate. The suggested MIMO antenna functions at 2.45 GHz and occupies a volume of 4.7 mm × 4.5 mm × 0.12 mm, making it among the most compact designs reported in this category. Size reduction is achieved using meandered lines. The proposed MIMO antenna consists of dual radiating elements sharing the same ground plane and are spaced 0.5 mm apart. Designed for implantation at a depth of 30 mm within the anatomical environment of the human heart, it is a promising candidate for leadless pacemaker applications. The antenna was fabricated and tested, achieving an isolation greater than 22 dB, which confirms excellent MIMO characteristics. Key parameters, including the envelope correlation coefficient and diversity gain, were also evaluated and exhibited favorable values, ensuring reliable MIMO operation. It exhibits omnidirectional radiation with spatial diversity. Specific absorption rate evaluation is conducted using a human tissue environment to verify compliance with safety standards. The results validate the antenna's suitability for implantable applications.

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一种用于增强型无铅植入式起搏器的新型紧凑MIMO天线

本文介绍了一种基于弯曲谐振器的新型小型化多输入多输出（MIMO）植入式天线，专为需要紧凑性和增强数据传输速率的生物医学应用而设计。建议的MIMO天线功能为2.45 GHz，体积为4.7 mm × 4.5 mm × 0.12 mm，是同类产品中最紧凑的设计之一。尺寸减小是通过弯曲的线条实现的。所提出的MIMO天线由共享同一接平面的双辐射元件组成，并且间隔0.5 mm。设计用于在人类心脏解剖环境中植入30毫米深度，它是无铅起搏器应用的有前途的候选者。该天线经过制造和测试，实现了大于22 dB的隔离，证实了出色的MIMO特性。关键参数，包括包络相关系数和分集增益，也进行了评估，显示出有利的值，确保可靠的MIMO运行。它具有全向辐射和空间多样性。使用人体组织环境进行特定吸收率评估，以验证是否符合安全标准。结果验证了该天线适合植入式应用。

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.