A NOVEL BEAM-SWITCHING ALGORITHM FOR PROGRAMMABLE PHASED ARRAY ANTENNA

ANOVELBEAM-SWITCHINGALGORITHMFORPROGRAMMABLEPHASEDARRAYANTENNAS.K.SanyalDepartment of Electronics and Telecommunication EngineeringJadavpur UniversityKolkata, 700032, IndiaQ.M.AlfredDepartment of Electronics & Communication EngineeringDurgapur Institute of Advanced Technology & ManagementRajbandh, Durgapur, 713212, IndiaT.ChakravartyDepartment of Electronics & Communication EngineeringFuture Institute of Engineering & ManagementSonarpur Station Road, Kolkata, 700150, IndiaAbstract—In this paper a programmable beam-switching algorithmfor planar phased array antenna is presented. Using micro-controllerthe planar array can be steered over 49 directions over the completehemisphere. Each element is connected to delay lines and switchingmodule. The bits at micro-controller output after being amplifiedby driver circuit are fed to the switching modules which control theinsertion of fixed phase tapering. Switching is performed on a uniqueset of delay lines to steer the beam in particular direction in thehorizon. For high frequency application PIN diode is used as switch.In total 12 bits are used to select 49 beam positions with some bitpatterns being redundant.