Characterization and application of ferroelectric phase shifters for phased array scanning [BST ceramics]

Abstract

A novel beam scanning method utilizing bulk ferroelectric materials is presented. S21 phase shifts of up to 148/spl deg/ could be achieved from the phase shifter via analogous variation of a DC bias. When integrated into a phased array, beam scanning of at least /spl plusmn/12/spl deg/ is achieved prior to any optimization.