volume | PIER Journals

Abstract

To address the demand for broadband, high-gain antennas in millimeter-wave communications, this paper proposes a stacked dipole patch array antenna based on substrate integrated waveguide (SIW) technology. The design employs a three-layer structure with slot-coupled feeding to enhance radiation performance. First, an SIW feeding structure is integrated into the bottom layer to ensure efficient signal coupling. Second, the middle layer features an innovatively designed ``wrench-shaped'' patch with metal vias, which not only effectively broadens the bandwidth but also enhances gain in conjunction with the rectangular patches on both sides. Finally, rectangular dipole patches are introduced in the top layer as parasitic elements to further optimize high-frequency performance. Through a 1-to-4 corporate-feed power divider network, the antenna achieves a measured impedance bandwidth of 24.42% (24.12 GHz-30.83 GHz) and a center frequency gain of 11.02 dBi. While achieving miniaturization, this antenna combines high bandwidth with high gain, demonstrating its application potential in next-generation millimeter-wave wireless communication.

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Dr. Mingming Gao

Dr. Ruize Huang

Dr. Xuan Du

Mr. Bowen Tao