Beam-tilted and wide beam antennas using hybrid electromagnetic band gap structures

A technique to tilt the beam to the specific direction and widening the beam width of a dipole antenna using controlling the position of via in electromagnetic band gap (EBG) structures has been presented in this paper. In addition to the low profile structure, the proposed method tilts the beam in either H-plane or E-plane of the dipole. The tilt angle or beam width of the dipole antenna can be easily determined for fixed beam direction by fixing the EBG via location from the centre of the EBG. The maximum tilt angle of 34° and 29° is achieved in E-plane and H-plane respectively. A wide beam width of 153° is obtained for the wide beam antenna.