A Broadband Rectifying Metasurface Antenna Based on Frequency Diversity for Simultaneous Wireless Information and Power Transfer

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

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-06-19 DOI:10.1109/LAWP.2025.3581212

Xiaofeng Sun;Qiqi Xie;Yingzhi Tian;Yunhao Li;Xiangyong Mou;Guohong Du;Yi Xie

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Abstract

In this letter, a broadband rectifying metasurface (RMS) antenna for simultaneous wireless information and power transfer (SWIPT) is proposed. By integrating an RMS with a slot-coupled antenna, the proposed design enables the concurrent collection of energy and information in different frequency bands, simplifying the SWIPT receiving system. First, an RMS is developed to harvest broadband electromagnetic energy across 4.4 GHz to 6.4 GHz. The top patch of the RMS unit is designed as an asymmetric orthogonal dipole, which expands the impedance bandwidth by optimizing the length ratio of its long and short arms. Rectifier diodes and inductors are directly integrated into the RMS unit to realize rectification and form direct current transmission path. Then, a 5 × 5 patch on the top of the RMS is regarded as a radiating patch, and a rectangular slot is etched in the center of the ground plane of the RMS, to form a slot-coupled antenna for information collection in the 2.4 GHz to 2.5 GHz. Measurement results indicate the energy harvesting efficiency exceeding 60% in the 4.4 GHz to 6.4 GHz, along with the gain of over 4 dBi in the 2.4 GHz to 2.5 GHz, confirming its effectiveness in both energy and information collection.

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一种基于频分集的宽带整流超表面天线，用于同时传输无线信息和能量

在这篇文章中，提出了一种宽带整流超表面（RMS）天线，用于同时无线信息和电力传输（SWIPT）。通过将RMS与槽耦合天线集成在一起，所提出的设计能够同时收集不同频段的能量和信息，从而简化了SWIPT接收系统。首先，开发了一种RMS，用于收集4.4 GHz至6.4 GHz的宽带电磁能量。RMS单元的顶部贴片设计为不对称正交偶极子，通过优化其长臂和短臂的长度比来扩大阻抗带宽。整流二极管和电感直接集成到RMS单元中，实现整流，形成直流传输通路。然后，将RMS顶部的一个5 × 5的贴片作为辐射贴片，在RMS接平面的中心蚀刻一个矩形槽，形成一个槽耦合天线，用于2.4 GHz ~ 2.5 GHz频段的信息采集。测量结果表明，该系统在4.4 GHz ~ 6.4 GHz频段的能量收集效率超过60%，在2.4 GHz ~ 2.5 GHz频段的增益超过4 dBi，验证了其在能量和信息收集方面的有效性。

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.