Inmarsat Terminal Phased Array Element with Multiple Dual-Port Radiators Fed by a Beamforming Network for Satellite Communications

A phased array antenna with a beamforming network in combination with a set of circular polarized ring antennas with different modes is presented for the reception of the Broadband Global Area Network (BGAN) operating in the L-Band. The structure is designed as an array element, which can be realized easily in a punched bent panel technique. Since an antenna diversity system is an additional use case, the measured patterns of the single elements are also provided together with the pattern of the complete phased array antenna. The complete structure is integrable in different types of vehicles, for example, flat rooftop radomes or spoilers, as a relatively small integration space is provided.