Wideband Microstrip Fed Slot Antenna Featuring Mode Conversion and Coordinated Radiation

IF 1.1 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Microwave and Optical Technology Letters Pub Date : 2026-05-29 DOI:10.1002/mop.70661

Honglin Zhang, Wenxin Ke, Zhijian Chen, Zhijian Li, Shaowei Liao

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引用次数: 0

Abstract

Wireless communication systems need broadband antennas with small backward radiation antennas for large throughput and low interference. This letter presents the design of a microstrip fed slot wideband antenna featuring mode conversion between heterogeneous transmission lines and coordinated radiation of multiple slots, which ensure the antenna achieve an average gain of 5.17 dBi in a bandwidth ranging from 0.75 to 2.24 GHz. Aiming at reducing backward radiation, electro-magnetic wave is redirected to the upper hemisphere through four rectangular slots that were placed in the ground plane. Measured results show the antenna's max gain of 6.12 dBi and a variation of ±0.95 dB in a fraction bandwidth of 99.7%, which verifies the design as they agree well with the simulated ones. The average gain increment from original antenna to proposed antenna is 8.6 dB and the average backward radiation reduction from original antenna to proposed antenna is 16.03 dB. The wide bandwidth, small backward radiation and gain variation make the antenna suitable for wideband communication systems.

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模式转换与协同辐射的宽带微带馈电槽天线

无线通信系统需要具有小型反向辐射天线的宽带天线，以实现大吞吐量和低干扰。本文设计了一种微带馈电槽宽带天线，该天线具有异构传输线间模式转换和多槽协调辐射的特点，可确保该天线在0.75 ~ 2.24 GHz的带宽范围内实现5.17 dBi的平均增益。为了减少反向辐射，电磁波通过放置在地平面上的四个矩形槽重定向到上半球。测量结果表明，天线的最大增益为6.12 dBi，在99.7%的带宽范围内，天线的增益变化为±0.95 dB，与仿真结果吻合较好，验证了设计的正确性。从原天线到建议天线的平均增益增量为8.6 dB，从原天线到建议天线的平均反向辐射减少为16.03 dB。该天线具有带宽宽、反向辐射小、增益变化小等特点，适用于宽带通信系统。

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

Microwave and Optical Technology Letters 工程技术-工程：电子与电气

CiteScore

3.40

自引率

20.00%

发文量

371

审稿时长

4.3 months

期刊介绍： Microwave and Optical Technology Letters provides quick publication (3 to 6 month turnaround) of the most recent findings and achievements in high frequency technology, from RF to optical spectrum. The journal publishes original short papers and letters on theoretical, applied, and system results in the following areas. - RF, Microwave, and Millimeter Waves - Antennas and Propagation - Submillimeter-Wave and Infrared Technology - Optical Engineering All papers are subject to peer review before publication