A triple‐band composite base station and satellite antenna array for maritime application. Issue 6 (11th March 2022)

• Record Type: Journal Article
• Authors: Ma, Zi Long; Peng, Shao Cong; Chu, Qing‐Xin
• Is Part Of: International journal of RF and microwave computer-aided engineering. Volume 32:Issue 6(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-03-11
• Subjects: base station antenna -- composite array -- maritime application -- satellite antenna -- triple‐band; Microwave devices -- Computer-aided design -- Periodicals; Computer-aided engineering -- Periodicals; 621.3813
• DOI: 10.1002/mmce.23140
• Languages: English
• ISSNs: 1096-4290

Abstract

Abstract: This paper presents a triple‐band composite antenna array for maritime application. It consists of a three‐element base station antenna array and a waveguide based satellite antenna, which are applied for near‐shore and long distance off‐shore communications, respectively. For the former, it is a ±45° dual polarized array with dipole radiators and covers 2G/3G/4G bands. The three elements are arranged in a form of half hexagon and attain 180° coverage of half power beamwidth (HPBW) in azimuth plane by switching the feeding ports. For the latter, it is a sequentially fed circularly polarized antenna operating in Ku‐band and has a wide HPBW through loading a dielectric structure. To validate the design idea, a prototype is fabricated and measured. Experimental results show that the base station antenna array achieves wide bandwidth of 49.14% from 0.66 to 1.09 GHz and 46.58% from 1.68 to 2.7 GHz with VSWR < 1.5. Meanwhile, the satellite antenna has a wide 3‐dB axial ratio (AR) bandwidth of 20.1% from 12.1 to 14.8 GHz with reflection coefficients lower than −15 dB. Within the band, the HPBW is larger than 90° and the 3‐dB AR beamwidth covers the HPBW.