Dual-Band Dual-Circularly Polarized Shared-Aperture mmWave Antenna

2022 IEEE 5th International Conference on Electronic Information and Communication Technology (ICEICT) Pub Date : 2022-08-21 DOI:10.1109/ICEICT55736.2022.9909173

Sifan Wu, Jianxing Li, Junwei Shi, Yuanxi Cao, S. Yan, Juan Chen

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引用次数: 1

Abstract

In this paper, a substrate integration waveguide (SIW) dual-band dual-circularly polarized (CP) antenna is proposed. The antenna is composed of three components i.e., low-frequency feed structure, SIW cavity, and polarization converter. In the high-frequency band, the TM010 mode of the SIW cylindrical cavity is excited by a probe. A slot is etched on the top of the SIW cavity and the linear-circular polarization converter is top-loaded to generate right-handed circularly polarized (RHCP) radiation. In the low-frequency band, the SIW cavity operates as a circular patch. The patch is excited by two branches of the Y-shaped slot to generate left-handed circularly polarized (LHCP) radiation. The simulated results show that the proposed antenna obtains −10 dB impedance bandwidths of 18.65-21.15 GHz and 30.1-31.3 GHz. The 3 dB axial ratio (AR) bandwidths are 18.85-21.15 GHz and 29.8-31.8 GHz with the peak gains of 6 dBi and 3 dBi at the corresponding bandwidths. The isolations of input ports are better than 34 dB and 20 dB, for the dual operating frequencies, respectively.

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双频双圆极化共孔径毫米波天线

本文提出了一种基片集成波导(SIW)双频双圆极化(CP)天线。该天线由三部分组成，即低频馈电结构、SIW腔和极化变换器。在高频波段，用探针激发SIW圆柱腔的TM010模态。在SIW腔体的顶部蚀刻一个槽，上负载线圆偏振变换器产生右手圆极化(RHCP)辐射。在低频波段，SIW谐振腔以圆形贴片的形式工作。该贴片由y形槽的两个分支激发，产生左旋圆极化(LHCP)辐射。仿真结果表明，该天线获得18.65 ~ 21.15 GHz和30.1 ~ 31.3 GHz的−10 dB阻抗带宽。3db轴比(AR)带宽分别为18.85 ~ 21.15 GHz和29.8 ~ 31.8 GHz，相应带宽下的峰值增益分别为6dbi和3dbi。在双工作频率下，输入端口的隔离度分别优于34 dB和20 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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2022 IEEE 5th International Conference on Electronic Information and Communication Technology (ICEICT)

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