Compact broadband high-gain dielectric rod antenna with air–dielectric hybrid design for millimetre-wave applications

IF 1.1 4区 计算机科学 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC
Yuwei Zhang, Shu Lin, Zhenyu Xu, Xingqi Zhang, Xinyue Zhang
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Abstract

This paper presents a compact, broadband, high-gain dielectric rod antenna. By utilising an air–dielectric hybrid method for designing the radiating and matching sections, gradual variations in the average equivalent permittivity along the rod are achieved, and the mechanism of the method is analysed. This approach facilitates a smooth impedance transition from the feed to the air, resulting in good impedance matching characteristics. Additionally, the antenna is fed through a tapered double-ridged waveguide (DRW) with a coaxial line to tapered DRW transition. The proposed antenna achieves an impressive impedance bandwidth of 90.2%, covering the entire K and Ka bands. The unique structure of the proposed dielectric rod significantly enhances the antenna's gain, reaching a maximum value of 17.86 dBi. With its small aperture and compact longitudinal dimensions, this antenna is suitable for applications in settings like the Space Environment Simulation Research Infrastructure (SESRI).

Abstract Image

采用空气-介质混合设计的毫米波应用的紧凑型宽带高增益介电杆天线
本文提出了一种紧凑、宽带、高增益的介质杆天线。采用空气-介电混合法设计辐射截面和匹配截面,得到了平均等效介电常数沿杆方向的逐渐变化规律,并分析了该方法的作用机理。这种方法有助于从馈电到空气的平滑阻抗转换,从而获得良好的阻抗匹配特性。此外,天线是通过一个锥形双脊波导(DRW)与同轴线锥形DRW过渡馈电。该天线达到了令人印象深刻的90.2%的阻抗带宽,覆盖了整个K和Ka波段。该介质杆的独特结构显著提高了天线的增益,最大增益可达17.86 dBi。凭借其小孔径和紧凑的纵向尺寸,该天线适用于空间环境模拟研究基础设施(SESRI)等设置中的应用。
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来源期刊
Iet Microwaves Antennas & Propagation
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
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