Dual-band reconfigurable smart antenna design

Modern radar and communication systems have experienced a tremendous increase in the number of antennas onboard, on the ground, and in orbital space. This places a burden due to the confined volume and limited weight requirements especially in space applications. The reconfigurable antenna is a promising and exciting new type of antenna, where through the use of appropriate switches the antenna can be structurally reconfigured, to maintain the elements near their resonant dimensions for several frequency bands. This increases the bandwidth of the antenna dramatically, which enables the use of one antenna for several applications. In this thesis novel reconfigurable antenna element were designed to work at 2.4 GHz and at 3.5 GHz. Simulation results for antenna were obtained using HFSS. In this work introduces the use of reconfigurable antenna elements in adaptive arrays. An adaptive array that can null interference and direct its main lobe to the desired signal while being reconfigurable to maintain functionality at several frequency bands has the potential to revolutionize wireless communications in the future. This system design illustrate how reconfigurable elements and adaptive arrays can be combined very beneficially for use in wireless communication systems. Anahtar Kelimeler: Smart Antenna, RF-MEMS Switch, Reconfigurable Antenna