Miniaturised ultra-wideband circular polarised koch fractal crossed dipole array

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

Iet Microwaves Antennas & Propagation Pub Date : 2024-09-01 DOI:10.1049/mia2.12506

Won Min Choi, Taeyong Jeong, Dong Hwan Lee, Jun Hee Kim, Dong Geun Lee, Keum Cheol Hwang

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Abstract

Ultra-wideband (UWB) systems utilise a broad frequency spectrum to achieve high data transmission rates and enhanced precision, creating a demand for specialised UWB antennas. Circularly Polarised (CP) antennas are considered essential for maintaining robust performance under varied environmental conditions. Among them, the crossed dipole is effective for UWB CP applications, but its relatively large size could limit its use in various systems. A miniaturised crossed dipole design employing the Koch fractal structure is proposed and the measurement results are presented. The prototype antenna achieved an effective bandwidth covering 88% of the frequency range from 1.4 to 3.6 GHz. Additionally, a 4 × 4 array using this design was tested in the same frequency band, demonstrating beam-steering capabilities up to 30°. The proposed antenna has demonstrated effective deployment in diverse communication systems and phased array applications within ultra-wideband (UWB) CP environments.

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微型化超宽带圆极化科赫分形交叉偶极子阵列

超宽带 (UWB) 系统利用宽广的频谱来实现高数据传输速率和更高的精度，因此需要专门的 UWB 天线。圆极化（CP）天线被认为是在各种环境条件下保持稳健性能的关键。其中，交叉偶极子对 UWB CP 应用非常有效，但其相对较大的尺寸会限制其在各种系统中的应用。本文提出了一种采用 Koch 分形结构的小型化交叉偶极子设计，并给出了测量结果。原型天线的有效带宽覆盖了 1.4 至 3.6 GHz 频率范围的 88%。此外，采用这种设计的 4 × 4 阵列也在同一频段进行了测试，显示了高达 30° 的波束转向能力。拟议的天线已在超宽带（UWB）CP 环境中的各种通信系统和相控阵应用中得到有效部署。

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

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