OCTAVE BANDWIDTH 8-BIT DIGITAL PHASE SHIFTER

A SINGLE 8-BIT PHASE SHIFTER WITH AN OCTAVE BANDWIDTH TO COVER THE 5.3 TO 10.6 GHZ BAND IS PROPOSED USING DIGITAL LINEARIZATION TECHNIQUES FOR PHASE SHIFT RESOLUTION AND SIGNAL AMPLITUDE LEVELING. IT HAS THE CAPABILITY OF BEING MODULATED AT 20 MHZ RATE WITH 40 DB CARRIER SUPPRESSION AND LOW RESIDUAL OUTPUT NOISE. FOR 5-BIT APPLICATIONS ONLY THE TOP 5 MOST SIGNIFICANT BITS NEED TO BE DRIVEN. THE USE OF THE DIGITAL LINEARIZATION TECHNIQUES ALLOWS FOR A SINGLE DEVICE TO SIMULTANEOUSLY SATISFY THE LARGE BANDWIDTH, HIGH-BIT PHASE RESOLUTION, AND HIGH CARRIER SUPPRESSION REQUIREMENTS. THE PHASE I EFFORT WILL BE ON ESTABLISHING ITS FEASIBILITY THROUGH THE ANALYSIS AND DESIGN OF THE ENTIRE PHASE SHIFTER, HARDWARE COMPONENTS DEFINITION, AND A BREADBOARD DEMONSTRATION.