Compact Dual-Band, Dual-Circular Polarized Microstrip Antenna Array for K/Ka-Band Application

IF 3.5 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Open Journal of Antennas and Propagation Pub Date : 2024-12-16 DOI:10.1109/OJAP.2024.3518556

Nohgyeom Ha;Gyoungdeuk Kim;Hyun-Cheol Bae;Sangkil Kim

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引用次数: 0

Abstract

A novel dual-band and dual-circularly polarized microstrip antenna design for a small AAV or a low earth orbit (LEO) satellite applications at K/Ka-band is proposed in this paper. Utilizing arrow-shaped and T-shaped stubs, the proposed design ensures right-hand and left-hand circular polarization across two frequency bands. The design activates orthogonal modes (TM10/TM01 and TM30/TM21) simultaneously, leveraging arrow-shaped and T-shaped stubs to finely tune resonant frequencies. The dimensions of these stubs facilitate independent adjustment of each operational band, ensuring optimized antenna functionality across different frequencies. Verification through a

$2\times 2$

antenna array design at 18.6 GHz and 30.9 GHz demonstrates the proposed design concept, achieving impedance bandwidths of 11.0% and 4.8%, axial ratio bandwidths of 3.7% and 2.3%, and realized gains of 9.45 dBic at 18.6 GHz and 10.78 dBic at 30.9 GHz, affirming its potential for advanced communication applications.

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用于K/ ka波段应用的紧凑型双频双圆极化微带天线阵列

提出了一种适用于小型AAV或低地球轨道卫星的K/ ka波段双频双圆极化微带天线设计方案。利用箭头形和t形存根，所提出的设计确保了两个频段的右手和左手圆偏振。该设计同时激活正交模式（TM10/TM01和TM30/TM21），利用箭头形和t形存根微调谐振频率。这些存根的尺寸便于独立调整每个操作频段，确保在不同频率下优化天线功能。通过18.6 GHz和30.9 GHz的$2\ × 2$天线阵列设计验证了所提出的设计理念，阻抗带宽分别为11.0%和4.8%，轴向比带宽分别为3.7%和2.3%，18.6 GHz和30.9 GHz的增益分别为9.45和10.78 dBic，证实了其在高级通信应用中的潜力。

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