A two-dimensional beam scanning continuous transverse stub antenna based on a single-layer compact linear source generator

IF 1.1 4区计算机科学 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Iet Microwaves Antennas & Propagation Pub Date : 2021-10-21 DOI:10.1049/mia2.12201

Ming-Yang Zhao, Xue Lei, Jun Gao, Yi-Jun Zhu, Tian-Peng Li, Qiang Peng

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引用次数: 1

Abstract

To minimise the profile of Satcom-on-the-Move ground terminals, in this study, a two-dimensional beam-scanning continuous transverse stub antenna that is based on a compact linear source generator (LSG) is presented. A periodic anti-symmetric two-step (ASTS) structure cascaded with a broadband network is used to construct a single-layer compact LSG. The concept of a parallel-plate waveguide polarisation twister is used to design the ASTS unit that acts as a TE₁₀-to-transverse electromagnetic wave converter, to which chamfers and T-type grooves are added to improve the output plane wave performance over the entire frequency band. A prototype array operating in the band 10.95–12.75 GHz is designed, fabricated, and measured, and the experimental results agree well with the simulated ones. A beam-scanning range of ±61° in elevation is achieved at the central frequency. Although only 29 of 36 slots (ϕ = 0°) contribute to the radiation, the antenna aperture efficiency is still over 60% due to the superior performance of the single-layer minimised LSG.

Abstract Image

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基于单层紧凑线性源发生器的二维波束扫描连续横向短天线

为了最小化移动卫星地面终端的轮廓，在本研究中，提出了一种基于紧凑型线性源发生器(LSG)的二维波束扫描连续横向短根天线。采用宽带网络级联的周期反对称两步(ast)结构构造了一个单层紧凑LSG。采用平行板波导偏振扭转器的概念设计了作为te10到横向电磁波转换器的ast单元，并在其上添加了倒角和t型凹槽，以改善整个频段内输出平面波的性能。设计、制作并测量了工作在10.95 ~ 12.75 GHz频段的原型阵列，实验结果与仿真结果吻合较好。波束扫描范围±61°的仰角是实现在中心频率。虽然36个槽中只有29个槽(ϕ = 0°)对辐射有贡献，但由于单层最小化LSG的优越性能，天线孔径效率仍然超过60%。

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来源期刊

Iet Microwaves Antennas & Propagation 工程技术-电信学

CiteScore

4.30

自引率

5.90%

发文量

109

审稿时长

7 months

期刊介绍： Topics include, but are not limited to: Microwave circuits including RF, microwave and millimetre-wave amplifiers, oscillators, switches, mixers and other components implemented in monolithic, hybrid, multi-chip module and other technologies. Papers on passive components may describe transmission-line and waveguide components, including filters, multiplexers, resonators, ferrite and garnet devices. For applications, papers can describe microwave sub-systems for use in communications, radar, aerospace, instrumentation, industrial and medical applications. Microwave linear and non-linear measurement techniques. Antenna topics including designed and prototyped antennas for operation at all frequencies; multiband antennas, antenna measurement techniques and systems, antenna analysis and design, aperture antenna arrays, adaptive antennas, printed and wire antennas, microstrip, reconfigurable, conformal and integrated antennas. Computational electromagnetics and synthesis of antenna structures including phased arrays and antenna design algorithms. Radiowave propagation at all frequencies and environments. Current Special Issue. Call for papers: Metrology for 5G Technologies - https://digital-library.theiet.org/files/IET_MAP_CFP_M5GT_SI2.pdf