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.
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