A high gain circularly polarised magnetoelectric dipole antenna array with metallic radiating structures for millimetre-wave applications

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

Iet Microwaves Antennas & Propagation Pub Date : 2023-12-09 DOI:10.1049/mia2.12443

Zihang Ye, Jin Tian, Jun Xiao, Tongyu Ding, Chongzhi Han, Qiubo Ye

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Abstract

An antenna array design method of trade-off between high gain and low profile is proposed. A high-gain circularly polarised (CP) substrate integrated waveguide (SIW)-fed magnetoelectric dipole (ME-dipole) antenna array with metallic radiating structures is presented for millimetre-wave (MMW) applications. The CP antenna element comprises a set of horizontally and vertically metal plates and a metallic cavity that is excited by an X-shaped coupling slot etched on the broader side of SIW. The metallic cavity is designed to improve the gain and axial ratio (AR) performances. Utilising this antenna element, a proof-of-concept is established through the design of a 2 × 2 subarray and a 4 × 4 array. The fabricated 4 × 4 CP antenna array has a measured impedance bandwidth of 6.1% (36.4–38.7 GHz), with |S₁₁| ≤ −10dB. The measured 3dB AR bandwidth is 5.4% (36.0–38.0 GHz). The measured maximum gain achieved is 19.1 dBic. The height of the proposed array is 0.74λ₀ which is larger than the heights of typical SIW-based microstrip arrays (0.1–0.4λ₀) and lower than the heights of metallic arrays (larger than 2λ₀).

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用于毫米波应用的带金属辐射结构的高增益圆极化磁电偶极子天线阵列

提出了一种兼顾高增益和低剖面的天线阵列设计方法。本文提出了一种具有金属辐射结构的高增益圆极化（CP）基底集成波导（SIW）馈电磁电偶极子（ME-dipole）天线阵列，用于毫米波（MMW）应用。CP 天线元件由一组水平和垂直金属板以及一个金属腔组成，金属腔由 SIW 宽面上蚀刻的 X 型耦合槽激发。金属腔的设计旨在提高增益和轴向比（AR）性能。利用这种天线元件，通过设计 2 × 2 子阵列和 4 × 4 阵列建立了概念验证。所制造的 4 × 4 CP 天线阵列的测量阻抗带宽为 6.1%（36.4-38.7 GHz），|S11| ≤ -10dB。测量的 3dB AR 带宽为 5.4%（36.0-38.0 GHz）。测得的最大增益为 19.1 dBic。拟议阵列的高度为 0.74λ0，大于基于 SIW 的典型微带阵列的高度（0.1-0.4λ0），低于金属阵列的高度（大于 2λ0）。

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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