一种用于高集成相控阵系统的宽带低剖面天线。

A Wide-Band Low-Profile Antenna for a High-Integration Phased Array System.

作者信息

Liu Haipeng, Liu Juan, Huang Jin, Han Chunhui, Chen Bo, Liu Yuhe, Xiang Yujie

机构信息

School of Mechano-Electronic Engineering, Xidian University, Xi'an 710071, China.

Beijing Institute of Remote Sensing Equipment, Beijing 100039, China.

出版信息

Sensors (Basel). 2024 May 22;24(11):3295. doi: 10.3390/s24113295.

DOI:10.3390/s24113295

PMID:38894088

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11174697/

Abstract

In this paper, a wide-band, low-profile antenna is presented for a high-integration phased array system. The proposed antenna, implemented using a tightly coupled array, operates over roughly the X-K frequency band and is performant at 8 GHz-18.5 GHz. The antenna can scan to ±60 degrees in both the E- and H-planes. Compared to previous tightly coupled antennas with smaller element spacing, the antenna in this paper reaches 9.4 mm, which corresponds to 0.58 λ of high frequency, suitable for engineering application conditions in production. The antenna can be soldered to BGA T/R chips in this space. Additionally, to facilitate flexible assembly for large arrays, the antenna is manufactured modularly using four elements and its parasitic radiation is analyzed. Then, a method for repressing parasitic radiation is presented. Finally, the antenna is fabricated and measured in a microwave chamber, exhibiting an excellent pattern and scanning radiation. The measured performance agrees with the full-wave finite array simulations.

摘要

本文提出了一种用于高集成相控阵系统的宽带、低剖面天线。所提出的天线采用紧密耦合阵列实现，工作频段大致覆盖X-K频段，在8 GHz至18.5 GHz频段性能良好。该天线在E面和H面均可扫描至±60度。与先前具有较小单元间距的紧密耦合天线相比，本文中的天线间距达到9.4 mm，对应于高频的0.58λ，适用于生产中的工程应用条件。在该空间内，天线可焊接至BGA T/R芯片。此外，为便于大型阵列的灵活组装，天线采用四个单元进行模块化制造，并对其寄生辐射进行了分析。然后，提出了一种抑制寄生辐射的方法。最后，在微波暗室中制作并测量了该天线，其方向图和扫描辐射性能优异。测量结果与全波有限阵列仿真结果相符。