基于缝隙耦合的三频带圆极化贴片天线

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关键词：WIFI；缝隙耦合；三频；圆极化；贴片天线

中图分类号： TN828.4

文献标识码：A

DOI：10.14106/j.cnki.1001-2028.2025.1286

引用格式：王树奇， 陈家乐. 基于缝隙耦合的三频带圆极化贴片天线 [J]. 电子元件与材料， 2025， 44（2）： 223-230.

Reference format： WANG Shuqi， CHEN Jiale. Tri-band circularly polarized patch antenna based on slot coupling [J]. Electronic Components and Materials， 2025， 44（2）： 223-230.

Tri-band circularly polarized patch antenna based on slot coupling

WANG Shuqi， CHEN Jiale

（School of Communication and Information Engineering， Xian University of  Science and Technology， Xian 710054，

China）

Abstract： A tri-band circularly polarized patch antenna was proposed based on slot coupling for WIFI communication in integrated sensing and communication （ISAC）. Circularly polarized radiation in 2.4 GHz frequency band was achieved by chamfering the rectangular patch antenna. By using etched symmetric coupling slots between the patch and floor， two new resonant frequencies at 5.2 GHz and 5.8 GHz band were introduced to effectively broaden the impedance bandwidth （IBW） of the antenna. A 2×2 phase-shift rotating-fed antenna array was designed. The axial ratio bandwidth （ARBW） of the antenna was broadened effectively by sequentially using the feed phase delay of 90°. The optimized dimension of the antenna is 78.7 mm×78.7 mm×1.6 mm. The simulation and experimental results show that the impedance bands of the antenna are 2.4-2.6 GHz， 5.17-5.35 GHz， and 5.72-5.85 GHz， respectively. The 3 dB circular polarization axial ratio bandwidths are 2.38-2.82 GHz， 5-5.5 GHz， and 5.6-6 GHz， respectively. The peak gains can reach up to 2.4 dBi， 2 dBi， and 2.88 dBi， respectively. The tri-band circularly polarized patch antenna has the advantages of simple structure， low profile， and small dimension， which is suitable for the WIFI tri-band communication.

Keywords： WIFI; slot coupling; triple-band; circular polarization; patch antenna

通感一体化是将通信与感知功能融合形成一个协同网络系统，是低空领域各种通信场景中的关键技术。（剩余7758字）