నైరూప్య

A Novel Octagonal Ring Shape Frequency Reconfigurable Antenna Using GaAs FET switches for RLANs, PCS, WiMax and Satellite Applications

Shagufta Parveen Asif Akhtar

A compact frequency reconfigurable antenna which could be easily switched between a narrowband state and a dual-band state is presented in this paper. The narrow band covers (5.3-6.1 GHz) where (5.470 – 5.850G Hz) is used for short Range devices (RLANs), and the dual-band Covers (1.89-4.1 GHz) which can be used for PCS (1.85-1.99 GHz and WiMAX (3.4-3.69GHz) and it also cover (18.02-20.6GHz) which can be used for Fixed Sattelite services .The reconfigurability is achieved by using two GaAs field effect transistor switches to change the length of the current flow path. The switch can be directly driven by digital signal, and no bias network is needed. The antenna is fabricated on FR4 epoxy substrate. The proposed antenna is well suited to be integrated within the wireless handheld devices.