一种面向弹载应用的多模谐振层叠微带贴片天线  

A Multi-mode Resonant Stacked Microstrip Patch Antenna for Missile-borne Applications

作　　者：邱鑫 杨汶汶[1] 陈建新[1] 李业 QIU Xin;YANG Wenwen;CHEN Jianxin;LI Ye(School of Information Science and Technology,Nantong University,Nantong 226019,China)

机构地区：[1]南通大学信息科学技术学院,南通226019

出　　处：《微波学报》2025年第2期58-66,共9页Journal of Microwaves

基　　金：国家自然科学基金(620712156);毫米波国家重点实验室开放课题(K202112)。

摘　　要：为减小弹载天线对弹体飞行的影响,同时满足导弹高速通信的需求,弹载天线需具有小型化、嵌入弹体与弹体共形以及宽带工作等特性。文中提出了一种适用于弹载应用的多模谐振层叠微带贴片天线,采用高介电常数的陶瓷介质基板以实现天线的小型化,并且通过底层基板上的两块U形贴片和一块环形贴片以及顶层基板上的两块矩形辐射贴片,共提供了四个工作模式组成宽带。考虑到天线嵌入载体实现共形的要求,引入金属腔紧密包围天线,并且通过调控叠层的厚度比,使得不同模式之间获得良好的耦合。最终,文中所提出的天线在目标频段内通过四个耦合良好的工作模式实现了目标频带的覆盖,并且展现出了较好的交叉极化水平。实测结果表明天线在三维尺寸为35.0 mm×35.0 mm×6.9 mm的条件下,实现了在L波段内1.45 GHz~1.55 GHz(相对带宽为6.7%)的-10 dB的带宽覆盖,并且H面主瓣3 dB波束宽度内交叉极化水平优于-21 dB。In order to reduce the influence of the missile antenna on the flight of the missile body and meet the needs of high-speed communication of the missile,the missile antenna needs to possess the characteristics of miniaturization,embedded missile body and broadband operation.In this paper,a multi-mode resonant laminated microstrip patch antenna suitable for missile-borne applications is proposed and adopts a ceramic dielectric substrate with high dielectric constant to realize the miniaturization of the antenna which provides a total of four working modes to form a broadband through two U-shaped patches and an annular patch on the bottom substrate and two rectangular radiometric patches on the top substrate.Considering the requirement that the antenna em-bedding carrier achieve conformity,a metal cavity is introduced to closely surround the antenna,and the thickness ratio of the stack is adjusted to achieve critical coupling between different modes.Finally,the proposed antenna achieves the coverage of the target frequency band through four well-coupled working modes in the target frequency band,and the design shows a good level of cross-polarization thanks to the highly symmetrical and miniaturized structure.The measured results show that the antenna achieves a band-width coverage of-10 dB from 1.45 GHz to 1.55 GHz(relative bandwidth of 6.7%)in the L-band under the condi-tion of 35.0 mmx35.0 mmx 6.9 mm three-dimensional dimensions,and the cross-polarization level is better than-21 dB in the 3 dB beamwidth of the H-plane main lobe.

关 键 词：层叠贴片天线 弹载天线 共形天线 小尺寸 宽带 

分 类 号：TN828.4[电子电信—信息与通信工程]