Microstrip Phase ShifterA MICRO-SPRING SUPPORTED MEMBRANE FOR RECONFIGURABLE DEFECTED GROUND MICROSTRIP PHASE SHIFTER By Tina Shoa Advisor: Dr. C.Shafai Outline Electronic Beam Steering Phase Shifters MEMS Phase Shifters Switched line type DMTL type PBG based Reconfigurable ground plane Effect of slot size on phase shift Effect of membrane deflection on phase shift Fabricated structure Experimental result Summary Reconfigurable Defected ground Phase Shifter Electronic Beam Steering Application Reconfigurable wireless and satellite communication. radars. Advantages over mechanically scanned antenna. Fast scanning. Eliminating mechanical complexity. More reliable. Fig.1 Electronic beam steering Varying the Phase between adjacent elements. Using phase shifters and operating at a fixed freque……