A Ka-band dual-polarized low profile magneto-electric (ME) dipole antenna with wide operational bandwidth is proposed in this paper. A thin substrate with two-stage meandered vias is utilized for realization of the proposed antenna. The meandered vias aid in compensation of phase difference caused due to utilization of thin substrate. The thickness of proposed antenna is reduced from $0.25~\lambda _{g}$ to $0.11~\lambda _{g}$ by using these two-stage meandered vias. The low profile antenna topology results in bandwidth reduction which is neutralized by introducing asymmetric slots in the ground plane. Shorting pins are inserted for elimination of higher order TM ₂₁ mode of Ka-band that results in a uniform broadside radiation pattern due to excitation of fundamental TM ₁₀ mode. The proposed antenna covers whole Ka-band with operating frequencies from 26 – 42 GHz. A $1\times4$ antenna array is also designed and fabricated with a reasonable gain of 12.06 dBi and stable radiation patterns. Simulated and measurement results are presented with detailed justification.

中文翻译：

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适用于mmWave 5G应用的新型双极化宽带和小型化薄型磁电偶极子天线阵列

本文提出了一种具有宽工作带宽的Ka波段双极化低剖面磁电偶极子天线。具有两级曲折通孔的薄基板被用于实现所提出的天线。弯曲的通孔有助于补偿由于利用薄基板而引起的相位差。建议天线的厚度从 $ 0.25〜\ lambda _ {g} $ 到 $ 0.11〜\ lambda _ {g} $ 通过使用这些两阶段曲折的通孔。低矮的天线拓扑结构导致带宽减少，这通过在接地平面中引入不对称缝隙来抵消。插入了短接销以消除Ka波段的高阶TM ₂₁模，由于激发了基本TM ₁₀模，从而导致了均匀的宽边辐射方向图 。拟议中的天线覆盖整个Ka频段，工作频率范围为26 – 42 GHz。一种 $ 1 \ times4 $ 天线阵列的设计和制造也具有合理的12.06 dBi增益和稳定的辐射方向图。模拟和测量结果均以详细的依据给出。