Nonorthogonal Polarized MIMO Antenna for Simultaneous Transmit and Receive in Wi-Fi-Based Integrated Sensing and Communication

IF 4.6 1区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Antennas and Propagation Pub Date : 2025-03-19 DOI:10.1109/TAP.2025.3550436

Ying Ma;Tianwei Deng;Peiqin Liu;Xiao Xu;Zhi Ning Chen

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引用次数: 0

Abstract

Simultaneously suppressing self-interference (SI), crosstalk interference (XI), and multiple-input-multiple-output (MIMO) interference over a wideband presents significant challenges in a simultaneous transmit and receive (STAR) MIMO antenna. This article presents a

$2\times 2$

STAR MIMO antenna that utilizes a usual stacked patch array while effectively suppressing all three types of interferences throughout the 5-GHz Wi-Fi spectrum. Moreover, these interference suppressions are accomplished when the TX-RX polarization of this antenna is nonorthogonal within one channel and between channels at the same time. In this work, a circularly polarization-linearly polarization (CP-LP) scheme with a broadband coupling adjustment (BCA) approach is proposed to minimize SI by producing wideband cancellation between residual TX-to-RX couplings. Metal walls with slot structures on the ground were designed to prevent interferences between channels while preserving antenna impedance matching. A prototype of the nonorthogonal polarized STAR MIMO antenna was constructed, showing good agreement between simulation and measurement. At

$5.1\sim 5.85$

GHz, it simultaneously suppresses all three interferences below –40 dB, with peak gains exceeding 7 dBic for TX and 8.7 dBi for RX, making this antenna promising for Wi-Fi-based integrated sensing and communication (ISAC).

查看原文本刊更多论文

基于wi - fi的集成传感与通信中同时收发的非正交极化MIMO天线

同时抑制宽带上的自干扰（SI）、串扰（XI）和多输入多输出（MIMO）干扰对同时发射和接收（STAR） MIMO天线提出了重大挑战。本文介绍了一种$2\ × 2$ STAR MIMO天线，该天线利用通常的堆叠贴片阵列，同时有效地抑制整个5 ghz Wi-Fi频谱中的所有三种类型的干扰。此外，当该天线的TX-RX偏振在一个通道内和通道间同时非正交时，可以实现这些干扰抑制。在这项工作中，提出了一种带宽带耦合调整（BCA）方法的圆偏振-线性偏振（CP-LP）方案，通过在残余的tx - rx耦合之间产生宽带抵消来最小化SI。在地面上设计了带槽结构的金属墙，在保持天线阻抗匹配的同时防止了信道间的干扰。构造了非正交极化STAR MIMO天线样机，仿真结果与实测结果吻合较好。在$5.1\sim $ 5.85$ GHz时，它同时抑制-40 dB以下的所有三种干扰，TX的峰值增益超过7 dBi， RX的峰值增益超过8.7 dBi，使该天线有望用于基于wi - fi的集成传感和通信（ISAC）。

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 Transactions on Antennas and Propagation 工程技术-电信学

CiteScore

10.40

自引率

28.10%

发文量

968

审稿时长

4.7 months

期刊介绍： IEEE Transactions on Antennas and Propagation includes theoretical and experimental advances in antennas, including design and development, and in the propagation of electromagnetic waves, including scattering, diffraction, and interaction with continuous media; and applications pertaining to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques