Low-Profile Electromagnetic Transparent Antenna with FSS as Radiator

A novel electromagnetic (EM) transparent base-station antenna, utilizing frequency selective surface (FSS) as radiator, is proposed. The utilization of FSS bestows the proposed antenna with EM transparent characteristics in the C-band (CB) of 3.3-3.8 GHz, wider working bandwidth covering low band (LB) of 0.69-1 GHz, and low-profile height. A dual-band antenna array, comprising the proposed LB and CB antennas, is constructed and assessed. This array with lower profile height of 0.15λL, λL representing the wavelength at the lowest working frequency, demonstrates a remarkable EM transparency, a good impedance matching, and a high cross-band isolation.