METHOD FOR CORRECTING PHASE OF ANTENNA ARRAY

摘要

PURPOSE:To set accurately the extent of the initial phase shift of each phase shifter, by arranging a signal generator at a point separated sufficiently from a plane antenna array to radiate signal radio waves and by measuring them. CONSTITUTION:The plane of a plane antenna array is set on the correct horizontal plane, and specially, a reference antenna element 1 and subreference antenna elements 8 and 9 are adjusted accurately for the horizontal level, and the interval between them is adjusted to a design value do accurately. A distance (l) between a signal generator 12 and each antenna element 4 is selected in such degree that radio waves are made incident from the signal generator 12 to antenna elements 4 in parallel. Phases of receiving radio waves corresponding to all antenna elements 4 are measured simultaneously to calculate correction values to be set to all adjustable phase shifters 5.