A compact dual-band Dolly-shaped antenna with parasitic elements for automotive radar and 5G applications. Issue 4 (April 2021)

• Record Type: Journal Article
• Authors: Bamy, Ce Lakpo; Moukanda Mbango, Franck; Konditi, Dominic Bernard Onyango; Moukala Mpele, Pierre
• Is Part Of: Heliyon. Volume 7:Issue 4(2021)
• Publication Date: 2021-04
• Subjects: Automotive radar -- 5G -- ISM applications -- Dual-band antenna -- Parasitic elements; Research -- Periodicals; Medical sciences -- Periodicals; Natural history -- Periodicals; Social sciences -- Periodicals; Earth sciences -- Periodicals; Physical sciences -- Periodicals; 507.2
• DOI: 10.1016/j.heliyon.2021.e06793
• Languages: English
• ISSNs: 2405-8440

Abstract

Abstract: 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 3 which is 0.541λ0 ×0.541λ0 ×0.099λ0 in electric size, where λ0 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 |S11 |≤-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. Abstract : Automotive radar, 5G, ISM applications, Dual-band antenna, Parasitic elements.