Wide Gain Bandwidth Beam-Steering Transmitarray Utilizing Additive Manufacturing and Metal Machining for Satellite Communication

IF 1.2 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Microwave and Optical Technology Letters Pub Date : 2025-09-07 DOI:10.1002/mop.70386

Javid Ahmad Ganie, Kushmanda Saurav

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Abstract

This paper presents a beam-steering transmitarray antenna that leverages a hybrid fabrication approach to enhance bandwidth performance across the 24–30.5 GHz range. The core transmitarray element combines a metal-machined waveguide with an additively manufactured cross-shaped dielectric insert ( $ϵ_{r}$ = 2.2), achieving both structural precision and design flexibility. Each element measures approximately $0.9 λ \times 0.9 λ \times 1.8 λ$ at 28 GHz. A wideband horn antenna mounted on a 3D-printed stand serves as the feed, with beam steering achieved through mechanical movement along the x and y axes, covering $\pm 1 2^{\circ}$ in both principal planes. The antenna attains a peak broadside gain of 22.4 dBi with only 1.3 dB steering loss, while its robust construction supports its use in harsh environments, making it well-suited for satellite communication applications.

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利用增材制造和金属加工的卫星通信宽增益带宽波束导向发射阵列

本文提出了一种波束导向发射阵列天线，该天线利用混合制造方法提高了24-30.5 GHz范围内的带宽性能。核心发射阵列元件结合了金属加工波导和增材制造的十字形介电插入（λ ${\epsilon }_{r}$ = 2.2），实现了结构精度和设计灵活性。每个元件的尺寸约为0.9 λ × 0.9 λ × 1.8λ $0.9\lambda \,\times \,0.9\lambda \,\times \,1.8\lambda $在28 GHz。安装在3d打印支架上的宽带喇叭天线作为馈源，通过沿x轴和y轴的机械运动实现波束转向。覆盖±1.2°$\pm 1{2}^{\circ }$在两个主平面。该天线的峰值宽边增益为22.4 dBi，而转向损耗仅为1.3 dB，而其坚固的结构支持其在恶劣环境下使用，使其非常适合卫星通信应用。

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来源期刊

Microwave and Optical Technology Letters 工程技术-工程：电子与电气

CiteScore

3.40

自引率

20.00%

发文量

371

审稿时长

4.3 months

期刊介绍： Microwave and Optical Technology Letters provides quick publication (3 to 6 month turnaround) of the most recent findings and achievements in high frequency technology, from RF to optical spectrum. The journal publishes original short papers and letters on theoretical, applied, and system results in the following areas. - RF, Microwave, and Millimeter Waves - Antennas and Propagation - Submillimeter-Wave and Infrared Technology - Optical Engineering All papers are subject to peer review before publication