双频圆极化微带天线的设计

2022 6th International Conference on Communication and Information Systems (ICCIS) Pub Date : 2022-10-14 DOI:10.1109/ICCIS56375.2022.9998166

Heng Zhang, Yi Huang, Yaodan Zhang, Jiatong Wu, Shangrong Ouyang

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引用次数: 0

摘要

为了满足不同频段数据链路网络之间日益频繁的通信需求，提出了一种双频圆极化微带天线的设计方案。该天线在微带天线基本形态的基础上，通过在方切角贴片上切割四个中心旋转对称等臂u型槽，具有双频圆极化辐射特性。利用电磁仿真软件对该类天线的辐射机理和结构进行了研究和分析，设计了工作频率分别为1.85GHz和4.24GHz的双频圆极化天线，分别在低频和高频辐射左手圆极化波。当S11小于-10dB时，阻抗带宽为1.83~1.89GHz和4.17~4.29GHz，增益在中心低频处达到5dB，在高频处达到7.1dB，两个频点的轴向比均小于3dB。

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A Design of Dual-Band Circularly Polarized Microstrip Antenna

In order to meet the increasingly frequent communication requirements between data link networks working in different frequency bands, a design of dual-band circularly polarized microstrip antenna is proposed. Based on the basic form of the microstrip antenna, this antenna has dual-band circularly polarized radiation characteristics by cutting four centrally rotationally symmetrical equal-arm U-shaped slots on the square-cut corner patch. The radiation mechanism and structure of this type of antenna are studied and analyzed using electromagnetic simulation software, and a dual-band circularly polarized antenna with operating at 1.85GHz and 4.24GHz is designed, which radiate left-handed circularly polarized waves in low and high frequency. The impedance bandwidth is 1.83~1.89GHz and 4.17~4.29GHz when S11 less than -10dB, the gain reaches 5dB at the central low frequency, and reaches 7.1dB at the high frequency, the axial ratios at the two frequency points are both less than 3dB.

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2022 6th International Conference on Communication and Information Systems (ICCIS)

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