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In this paper, a multi-direction steerable radiation pattern antenna is designed and investigated, which operates at 2.45 GHz frequency. The radiation pattern reconfigurable is achieved by locating the driven elements at the centre of the antenna that surround by four parasitic elements. The artificial switches, are currently inserted at the specific position on the parasitic element. The beam steering to be directed into four direction angles; right, left, upwards and downwards, by controlling the state of the switches, ON/OFF. In this research, an investigation on the effect of gap and the size of the parasitic on the steering angles has been carried out. With minimum numbers of switches deployed, the proposed antenna is a potential candidate to serve as a transmitting element in WSN applications.

Investigation on the effect of the gap and size of the parasitic structure in multi-direction steerable antenna for WSN