Millimeter-Wave Low-Sidelobe and Wide-Angle Beam-Scanning Phased Array Based on Amplitude and Phase Controllable Shorted Patch Pairs

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

IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-06-16 DOI:10.1109/LAWP.2025.3580258

Yunfei Cao;Junqi Wang;Wenjie Feng;Quan Xue

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Abstract

This letter proposes a novel element-level amplitude and phase control method to achieve a millimeter-wave wide-angle beam-scanning phased array with low sidelobe. A beam-steerable antenna element is realized by feeding a pair of shorted patches with two separate ports. The main novelty is that the main-beam direction and radiation-null position of the proposed antenna pair can be tuned by controlling the excitation phase and amplitude of two ports, respectively. No active RF switch or varactor with dc biasing circuit is required. Furthermore, a millimeter-wave phased array is made up using proposed beam-steerable antenna pairs. By controlling the element-level amplitude and phase together with the array factor, the beam-scanning angle of the array is enhanced, and the sidelobe level is simultaneously suppressed in the process of beam scanning. The proposed array achieves a high peak gain of 13.1 dBi and a wide scanning range of ±70°, maintaining a low sidelobe level of smaller than −10 dB in the frequency band of 26 GHz to 30 GHz. Compared with previous related works, the advantage of the proposed array lies in high gain, simple structure, wide-angle beam scanning capability and good sidelobe suppression.

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基于幅相可控短贴片对的毫米波低旁瓣广角波束扫描相控阵

为实现低旁瓣毫米波广角波束扫描相控阵，本文提出了一种新的元级幅相控制方法。波束导向天线元件是通过两个独立端口馈送一对短贴片来实现的。其主要新颖之处在于，该天线对的主波束方向和辐射零点位置可以通过分别控制两个端口的激励相位和幅值来调谐。不需要有源射频开关或带直流偏置电路的变容管。此外，利用所提出的波束可控天线对组成了毫米波相控阵。在波束扫描过程中，通过控制元级幅值、相位和阵列因子，增强了阵列的波束扫描角，同时抑制了旁瓣电平。该阵列具有13.1 dBi的峰值增益和±70°的宽扫描范围，在26 GHz ~ 30 GHz频段保持小于−10 dB的低旁瓣电平。与以往的相关工作相比，该阵列具有增益高、结构简单、宽角波束扫描能力强、旁瓣抑制效果好等优点。

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.