A Low-Profile Shared-Aperture Patch Antenna With 2-D Scanning Capability

IF 4.8 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-06-10 DOI:10.1109/LAWP.2025.3578513

Lei Wang;Cheng Xi Zhang;ShuaiShuai Xing;Yuan Hang Xu;Wei Bing Kong;Jin Shi

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Abstract

This letter presents a novel low-profile patch antenna with shared aperture and two-dimensional scanning capability. Compared with the state-of-the-art designs, the proposed antenna offers low cost and easy integration due to its simple structure. The millimeter-wave (MMW) stacked patch antenna array is embedded in the weak electric-field (E-field) region of the antiphase TM₂₀ mode and TM₁₂ mode of the microwave (MW) dual-patch antenna. This design interleaves two antenna types within the same aperture, achieving natural isolation. Slots on the MW patch modify the current path of the antiphase TM₂₀ mode and the TM₁₂ mode, enabling dual-mode operation with low profile. The stacked patches provide wideband operation in MMW frequency band. Additionally, periodic slots on the MW patch facilitate MMW beam scanning, achieving ±45° beam scanning at both E- and H-planes. For demonstration, a prototype of the proposed MW and MMW shared-aperture patch antenna is fabricated and measured, which has a total size of 0.38λ_L × 0.48λ_L × 0.022λ_L (λ_L is the operating wavelength at 4.6 GHz in free space). Measurements show a 10 dB impedance matching bandwidth of 6.6% and 27.1% and a peak gain of 7.2 dBi and 15.5 dBi in MW and MMW bands, respectively.

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具有二维扫描能力的低轮廓共享孔径贴片天线

本文提出了一种具有共享孔径和二维扫描能力的新型低轮廓贴片天线。与目前最先进的设计相比，该天线结构简单，成本低，易于集成。将毫米波（MMW）堆叠贴片天线阵列嵌入到微波（MW）双贴片天线的反相TM20模式和TM12模式的弱电场（E-field）区域。这种设计在相同的孔径内交织两种天线类型，实现自然隔离。MW补丁上的槽位可以修改反相TM20模式和TM12模式的电流路径，实现低姿态的双模工作。堆叠的贴片在毫米波频段提供宽带操作。此外，毫米波贴片上的周期性缝隙有助于毫米波波束扫描，在E面和h面实现±45°波束扫描。为了验证所提出的毫米波和毫米波共享孔径贴片天线的原型，该天线的总尺寸为0.38λL × 0.48λL × 0.022λL （λL为自由空间4.6 GHz工作波长）。测量结果表明，10db阻抗匹配带宽分别为6.6%和27.1%，峰值增益分别为7.2 dBi和15.5 dBi。

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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来源期刊

IEEE Antennas and Wireless Propagation Letters 工程技术-电信学

CiteScore

8.00

自引率

9.50%

发文量

529

审稿时长

1.0 months

期刊介绍： IEEE Antennas and Wireless Propagation Letters (AWP Letters) is devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation. These are areas of competence for the IEEE Antennas and Propagation Society (AP-S). AWPL aims to be one of the "fastest" journals among IEEE publications. This means that for papers that are eventually accepted, it is intended that an author may expect his or her paper to appear in IEEE Xplore, on average, around two months after submission.