Design Optimization of Feeding Networks with a Special Size for Self-Interference Cancellation

IF 0.9 4区工程技术 Q4 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2023-11-30 DOI:10.1155/2023/2957545

Xiaotian Huang, Baohua Sun, Li Sun, Rui Zhang, Wei Niu, Ruize Niu

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引用次数: 0

Abstract

This letter introduces an effective self-interference cancellation (SIC) for improving isolation between transmit (Tx) ports and receive (Rx) ports of an in-band full-duplex antenna with feeding networks (FNs). A significant isolation improvement is realized by replacing the traditional FNs of the antenna with SICFNs. The coupling between Tx and Rx ports is canceled in the FNs due to the specific power ratios and phase difference. Though a Python optimization procedure, the optimal values of the key parameters of the SIC FNs can be determined. To validate the proposed SIC technique, the prototype consisting of two four-element antenna arrays and four SICFNs designed with the technique is fabricated. The results of measurements performed in an anechoic chamber show an isolation improvement of 15 dB at 3.6 GHz, while only 0.3 dB gain loss for the antenna array as a sacrifice is observed.

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针对自干扰消除的特殊尺寸馈电网络的设计优化

这封信介绍了一种有效的自干扰消除（SIC）方法，用于提高带内全双工天线的发射（Tx）端口和接收（Rx）端口之间的隔离度。用 SICFN 代替传统的天线馈电网络后，隔离效果明显改善。由于特定的功率比和相位差，Tx 和 Rx 端口之间的耦合在馈电网络中被消除。通过 Python 优化程序，可以确定 SIC FN 关键参数的最佳值。为了验证所提出的 SIC 技术，我们制作了由两个四元件天线阵列和四个利用该技术设计的 SICFN 组成的原型。在电波暗室中进行的测量结果表明，在 3.6 GHz 频率下，隔离度提高了 15 dB，而作为牺牲品的天线阵列的增益损失仅为 0.3 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

International Journal of RF and Microwave Computer-Aided Engineering 工程技术-工程：电子与电气

CiteScore

4.00

自引率

23.50%

发文量

489

审稿时长

3 months

期刊介绍： International Journal of RF and Microwave Computer-Aided Engineering provides a common forum for the dissemination of research and development results in the areas of computer-aided design and engineering of RF, microwave, and millimeter-wave components, circuits, subsystems, and antennas. The journal is intended to be a single source of valuable information for all engineers and technicians, RF/microwave/mm-wave CAD tool vendors, researchers in industry, government and academia, professors and students, and systems engineers involved in RF/microwave/mm-wave technology. Multidisciplinary in scope, the journal publishes peer-reviewed articles and short papers on topics that include, but are not limited to. . . -Computer-Aided Modeling -Computer-Aided Analysis -Computer-Aided Optimization -Software and Manufacturing Techniques -Computer-Aided Measurements -Measurements Interfaced with CAD Systems In addition, the scope of the journal includes features such as software reviews, RF/microwave/mm-wave CAD related news, including brief reviews of CAD papers published elsewhere and a "Letters to the Editor" section.