Bamy Ce Lakpo, Moukanda Mbango Franck, Konditi Dominic Bernard Onyango, Moukala Mpele Pierre
Department of Electrical Engineering, Pan African University Institute of Basic Sciences Technology and Innovation (PAUSTI), Juja, Kenya.
Faculty of Sciences and Techniques, Electrical and Electronics Engineering Laboratory, Marien Ngouabi University, B.P 69, Brazzaville, Congo.
Heliyon. 2021 Apr 16;7(4):e06793. doi: 10.1016/j.heliyon.2021.e06793. eCollection 2021 Apr.
In this paper, a compact dual-band Dolly-shaped antenna (DBDSA), resonating at 23.52 GHz and 28.39 GHz, is proposed for automotive radar, 5G, and Industrial, Scientific, and Medical (ISM) applications. The antenna is designed on a 7 × 7 × 1.28 mm which is 0.541λ×0.541λ×0.099λ in electric size, where λ represents the free space wavelength at 23.16 GHz. Rogers RO3010 substrate with a dielectric constant of 10.2 and a loss tangent is about 0.0022 has been used. Two F-shaped parasitic elements and a rectangular slot have been used to achieve the desired electromagnetic antenna performances. After modeling and optimizing the proposed antenna configuration through High-Frequency Structure Simulator (HFSS) software, its prototype was manufactured and measured to validate the simulated results. The DBDSA achieves an overall radiation efficiency of 80% within the two operating frequency bands. The radar band exhibits a stable gain of 5.51 dBi, while the 5G band has a gain of 4.55 dBi. Furthermore, the experimental results show that the |S|≤-10 dB bandwidths are 1.16 GHz (23.16 GHz-24.32 GHz) in the lower band and 634 MHz (28.078 GHz-28.712 GHz), respectively. A good agreement is found between the simulated and measured results.
本文提出了一种紧凑的双频段多利形天线（DBDSA），其谐振频率为23.52 GHz和28.39 GHz，适用于汽车雷达、5G以及工业、科学和医疗（ISM）应用。该天线设计在尺寸为7×7×1.28 mm的基板上，电尺寸为0.541λ×0.541λ×0.099λ，其中λ代表23.16 GHz的自由空间波长。使用了介电常数为10.2、损耗角正切约为0.0022的罗杰斯RO3010基板。采用了两个F形寄生元件和一个矩形槽来实现所需的电磁天线性能。通过高频结构模拟器（HFSS）软件对所提出的天线结构进行建模和优化后，制作并测量了其原型以验证模拟结果。DBDSA在两个工作频段内的整体辐射效率达到80%。雷达频段的增益稳定在5.51 dBi，而5G频段的增益为4.55 dBi。此外，实验结果表明，在较低频段|S|≤-10 dB的带宽为1.16 GHz（23.16 GHz - 24.32 GHz），在较高频段为634 MHz（28.078 GHz - 28.712 GHz）。模拟结果与测量结果吻合良好。
