A dual-polarised aperture-coupled microstrip stacked patch antenna with sta
cked feed lines is presented. The antenna is capable of operating over a ba
ndwidth of 30% with improved front-to-back ratio performance. The patches a
re excited through non-resonating crossed slots. The feed lines are separat
ed by a thin substrate to enhance the port decoupling. The measured impedan
ce and radiation pattern of the antenna at C-band are presented.