MINIATURE BROADBAND CIRCULATOR

IN PHASE I, E-TEK WILL INVESTIGATE THREE SOUND DESIGN APPROACHES TO DEVELOP THE MINIATURE BROAD-BAND CIRCULATOR WITH PHYSICAL SIZE OF 0.16"XO.325"X0.75", FREQUENCY RANGE OF 6-18 GHZ, SUBSTRATE THICKNESS OF 10 MILS, INSERTION LOSS OF LESS THAN 1 DB AND ISOLATION GREATER THAN 15 DB. THE FIRST APPROACH IS TO OPTIMIZE THE FIELDS, UNIFORMITY OF THE RESONATOR TO ACHIEVE A BROAD BANDWIDTH. THE SECOND APPROACH IS TO VARY THE RESONATOR'S SHAPE OR CONFIGURATION TO ACHIEVE A BROAD BANDWIDTH. THE THIRD APPROACH IS TO DEVELOP A WIDEBAND MINIATURE FOUR-PORT LANGE COUPLER-CIRCULATOR WITH E-TEK'S MANY YEARS OF EXPERIENCE AND KNOW-HOW IS DEVELOPING HIGH FREQUENCY, BROADBAND MICROSTRIP CIRCULATORS, PHASE I INVESTIGATION WILL DIRECTLY LEAD TO PHASE II HARDWARE IMPLEMENTATION, EVALUATION AND DEMONSTRATION.